Showing posts with label peak oil. Show all posts
Showing posts with label peak oil. Show all posts

Tuesday, 13 January 2009

ALTERNATE ENERGY INVESTING, PEAK OIL AND KYOTO COMPLIANCE

by Andrew McKillop
Founder member, Asian Chapter, Internatl Assocn of Energy Economists
Former Expert-Policy and programming, Divn A-Policy, DGXVII-Energy, European Commission
Former Director of Information, OAPEC subisidiary AREC, Abu Dhabi, UAE
January 12, 2009

ABSTRACT

Energy Transition away from fossil fuels is driven by two crises – declining resources of both oil and gas, whose prices are able to attain extreme highs whenever global economic growth is strong, then crash to extreme low prices when economic growth falters; and the intensifying crisis of climate change, which the IPCC and other sources warn may become catastrophic within less than 30 years. While public and political acceptance of the urgent need to mitigate climate change is nearly total, neither peak oil or peak gas are widely accepted as being, if anything, more urgent because the lead time to very serious impacts from declining export supplies of both these current pillars of the global energy economy is so short – no more than a few years.

These crises are intertwined and inter-dependent. The only lasting solution is Energy Transition away from fossil fuel dependence, to a fast-growing utilisation of alternate low carbon, and zero carbon renewable energy sources, developed on a worldwide basis taking account of local and regional availability of the renewables. This of course requires massive, stable, coordinated and long-term investment without extremes of market-induced volatility, within a plan that firstly targets the reduction of oil and gas intensity (average per capita demand) in the OECD countries.

Introduction

Through 2008 oil prices attained an all-time high of about 147 USD/bbl (WTI grade, front month contract, Q2 2008) before crashing to well below 40 USD/bbl in December 2008. This fall of about 75%, similar to the massive deflation or contraction in value for many equities, for world cargo shipping rates, base metals such as nickel or copper, and most agro-commodities, is usually hailed by political leaders and mass media in the consumer societies as a 'good thing'. At these price levels for oil, and related price levels for gas or coal, however, almost any alternate or renewable technology, such as windfarms (specially offshore), solar electric power, waste dump methane recovery, electric cars and linked battery technology, and other non-fossil energy sources and systems become totally uneconomic. As we have seen with the biofuels or agrofuels, and possibly soon with windpower in Europe, investor support and mobilization for continued growth of these alternate and renewable energy systems has quickly fallen away.

In a context of massive asset price volatility and therefore uncertainty, it is easy to forget the 'fundamentals', but for oil these are very clear. While the 2008 price peak exceeded the previous all-time peak of early 1980, which in 2008 dollars was around 100-120 US dollars/barrel, there were many differences between the two situations. The biggest difference was that the 1980 price peak had a single and simple cause: the ‘Iran crisis’ of 1979-1980, during which the overthrow of the Chah's regime slashed Iranian oil production and exports by about 60% for 6 months. Exports fell about 2.5 million barrels/day (Mbd), which at the time was well over 7.5% of world total export supply or 'offer'.

No similar, geopolitically caused, very sharp loss of export supply can be offered as the reason for the constant increase of oil prices through nearly a decade, from 1999.

Another major difference is that global economic growth had already collapsed in 1980, notably due to extreme high interest rate policies, at the time of the 'Iran crisis' which drove oil prices to peak highs. Through 2005-2007 global economic growth was at record highs, and continued until an essentially financial and banking crisis triggered a collapse of economic growth. Constant reductions of interest rates to historic lows have, so far, done nothing to restore conventional or 'classic' economic growth, but may lead to extreme high rates of inflation whenever there is any recovery in conventional economic growth as measured by conventional indicators like steel production, car sales, house sales, airline miles traveled, shipping cargo rates, etc.

We can therefore note that constantly rising oil and commodity prices, in 2005-2007, did not 'damage' the vintage economic growth of the period, nor produce exceptionally high inflation, but in fact tended to intensify conventional economic growth, in a process that I call Petro Keynesian growth. To be sure, oil prices of well beyond 125 USD/bbl in 2008 increased inflation, led to big falls in consumer confidence, and most certainly aggravated other existing problems in the economy, but the general process of rising oil, energy and commodity prices most certainly contributed to rising global economic growth, particularly in the period of 2005-2007.

New trends and Factors

Underlying the constant rise of oil prices we have a sometimes denied, but real depletion crisis well described and studied by ASPO groups in different countries. This relatively newly recognized, but long-term process is joined by climate change, as another long-term, newly recognized factor which will very surely affect world energy and the global economy for decades to come. Back in the 1980s, we can note, anthropogenic climate change was an unknown subject, even if Milankovitch's astronomic climate change theories were well known. By 1992 however, at the Rio environment conference the subject emerged.

Some 16 years later, after heroic attempts at 'climate change denial' by the Bush administrations of 2000-2008, and studied ignorance of the subject by emerging economy leaderships, climate change has become an integral part of effective political response to the basic challenge of oil depletion and natural gas depletion. Depletion is of course is not openly acknowledged as the driver for mounting calls to quickly, and massively develop alternate and renewable energy, particularly oil substitution and oil saving sources and systems. Other reasons for oil saving are usually preferred: for example energy security and dependence on Middle Eastern oil, high oil prices and their inflationary impact, and "long term" problems of "possible" oil depletion are more often communicated as the reason for seeking to urgently substitute oil in the energy economy.

In fact, the challenge of oil and gas depletion is at least as real as, and nearer-term than the onset of catastrophic climate change - which could start by 2025-2035, if world fossil fuel burning is not seriously curbed, and atmospheric concentrations of CO2 are allowed to spiral up to 500 ppm. Other impacts of global climate change, to be sure, will act well before these dates. However, uncontrolled reduction of oil and gas burning simply through depletion will occur a lot sooner than 2025, with the first onset of annual falls in export supply availability of oil and both LNG or pipeline gas in the period 2010-2012. The severity of the present and ongoing global economic recession may 'stretch' these dates a little, but not a lot.

We can be sure that political parties and consumer media editorialists feel that climate change is acceptable for mobilizing public opinion for an uncertain, and fast-changing economic future, and a useful way to not mention oil and gas depletion as the reason why alternate and renewable energy must be urgently developed. However, we are forced to admit that the process of free market asset growth and decline, that is boom followed by slump will surely penalize the fast-growing "Cleantech" asset sector (that includes alternate and renewable energy financing). In fact, unimpeded market freedom could lead to the "Cleantech" sector collapsing, with general equities and other investment sectors, if oil stays for any length of time at under 40 dollars-a-barrel.

Need for Safeguards

What are needed are safeguards. These will include state, bilateral or multilateral frameworks, subsidies, legislation and intervention aimed at ensuring rapid but efficient growth of non-fossil energy supplies on a worldwide basis while preventing, or limiting extreme price volatility for oil and gas supplies. Without these safeguards, and with continuing low traded prices for oil, gas and coal, the alternate and renewable asset bubble will almost certainly, and quite soon collapse in an inevitable slump, like the dotcom asset bubble of 1998-2001, or the housing and property bubble of 2002-2007.

If we look at world traded oil and gas supply, both are considerably smaller than total production and consumption, more so for gas than oil. The major exporters, and importers of both oil and gas supply and consume a very large proportion of both. For oil we find in 2007 that the 20-largest exporters, and 20-largest importers were responsible for over 90% of world total export supply, and over 90% of total imports. For gas we find an even larger concentration (over 95%).

World export supply of both oil and gas require visibility (that is predictability) regarding the volumes available, and unit prices. Due to the large concentration of total exports and total imports by a small number of countries, this process could be quite efficiently set in any forum able to bring together permanent delegations from the 20-largest exporter countries, and 20-largest importer countries. This would take oil and gas pricing out of, and away from the speculative market currently involving many thousands of participants or 'players', all seeking short-term gain, with no political responsibility for their actions, and no interest in the effects of extreme oil or gas price volatility on other sectors – for example long-term investment in alternate and renewable energy.

As to the so-called 'efficiency' of the private market pricing system, we can note that in 2008 it was able to shift oil prices by at least 75% each way in about 9 months ! Volumes of 'paper oil' treated by speculative traders, counting all major oil markets (Nymex, ICE, IPE, Dubai Mex, Tocom, etc) in 2008 were at least 100 'paper barrels' for each 1 barrel of physical oil changing hands. Adding the markets for petroleum products we easily arrive at well over 150 barrels of 'paper oil' treated for 1 barrel of physical. If this is 'efficient' the word obviously has special new, arcane or mystical meaning. We can simply note that low trading costs per barrel, which is a favorite defense of free market price setting without state or multilateral intervention, has to be set against trading around 150 times total real world deman for crude and products. This amounts to about 150 X 51 million barrels-per-day (close to 7.8 billion barrels per day).

World total physical oil consumption in the full 365-day year of 2007 was about 31.5 billion barrels.

Bringing the main exporters, and main importers together in a permanent, UN-level entity will very obviously help to prevent sequences of extreme and uncontrollable volatility, due to the market-only system based only on speculation. Numerous models and precedents in fact exist for this type of multilateral mechanism, taking the long period of 1945-2008 into account.

Paradigm change

To be sure in late 2008, and even more surely in 2009 it is the global financial and economic crisis that occupies most headlines and column inches. Few if any analysts and economic or financial authorities such as the European Central Bank and US Federal Reserve today forecast that economic recovery is 'just around the corner'. Less often stated in official press statements, we can be certain that world traded oil and gas prices will not stay for long at the derisory price levels of Dec 2008. Long-term trends of increasing depletion, and slower, smaller net additions of supply capacity (particularly export supply capacity) will quite soon lead to structural undersupply. For the moment of course, the massive slump in world economic activity, and therefore oil demand can hold prices down – for as long as the exporters cut their supply by 'too little and too late' – but this supposed 'happy interval' for consumers will not be durable or sustainable.

In other words and more simply, oil and energy prices will not stay depressed at the same price levels they stayed at through 1986-1999. The one-time chance of Cheap Oil through 1986-1999 is very unlikely to ever return again. At latest when structural undersupply intervenes, perhaps by 2010, the inevitable free market response – bidding prices to extreme highs – will lead to a sharp increase in world inflation and rapidly falling economic growth in a context of extremely high borrowing by national governments in response to the current economic crisis. To be sure, calls for oil supply volumes and pricing to be 'controlled' will almost certainly emerge. With further shortage of oil and gas supplies due to depletion, free market pricing will tend to be reduced, or abandoned, but in a context of open and constant crisis favouring uncoordinated bilateral, or perhaps regional supply and pricing arrangements.

Acting before this de facto abandonment of 'free market pricing' should be the focus of coherent and responsible proposals, today. Intervention in free financial and economic markets to try limiting the collapse of economic growth is now very certainly accepted by political deciders – the same is needed to safeguard the long-term transition to dependence on alternate and renewable energy and avoid or limit extreme oil and energy prices while free market trading still dominates supply and pricing.

De-linking oil with Economic growth

As we found during 2005-2007, world oil and energy demand remained very strong despite ‘extreme’ prices, proving that oil and gas price elasticity is very low oil in the conventional or ‘classic’ economic growth process: demand increases with rising prices until extreme high prices are attained – followed by economic slump. In other words the 'Petro Keynesian growth' process has little or no feedback until extreme high price levels are attained for energy and other commodities in short supply, after which economic slump results, with a collapse of energy and commodity prices – and investment in all competing substitutes.

Even in deep economic recession in the OECD countries (about one-sixth of world population, and about 45% of world GNP depending PPP corrections) it is likely that most fast emerging, new industrial giant and large economies like China, India, Brasil, Pakistan, Turkey, Bangladesh (and others) will continue increasing their oil and gas consumption. Some may be able to increase their domestic production of oil and gas, and coal, but most will not. Their increasing 'call on export offer' will tend to attenuate the fall of world oil demand, provisionally forecast for the year 2009 by agencies like the OECD's IEA at up to 1.5 Mbd, or about a 1.75% reduction in world total demand relative to 2008. In fact in 2009, this fall of demand may intensify, and further depress traded oil prices, on the one hand, threatening the reaction of more drastic oil export supply cuts by OPEC and Russia, on the other hand.

Taking entry to the 1980-83 recession for comparison, this economic slump compressed world oil demand by about 3.5% pa, but with the return of global economic growth in 1984, world oil demand also rapidly returned to growth.

The current very short term context of sharply falling oil demand, with a potential fall also of gas and coal demand in 2009, has to be compared with the expected falls in world oil supply capacity from as early as 2010, forecast by experts within the ASPO group. These estimates are of annual falls in world total production capacity quite rapidly attaining 4% - which is somewhat higher than the probable rate of contraction for world oil demand due to the current global economic slump. At any time there is recovery of conventional economic growth, the large and increasing shortfall in supply or 'supply/demand gap' will quickly become evident.

It is very clear that the emerging economies will continue increasing their national oil, gas and coal demand until and unless energy prices attain some extreme high – or that reason prevails, and these countries are brought into a global and multilateral plan and framework for accelerated Energy Transition. This must, as already noted, feature fossil energy intensity reduction in the OECD and accelerated, coordinated and automatically funded, worldwide development of ARE.

One major problem is the credibility of 'de-linkage' of oil with economic growth. For the emerging economies this is evidently and clearly not the case – their conventional and fast economic growth produces strong growth of their fossil energy demand. For the OECD group and according to ECB president Trichet, and US Fed chairmen Greenspan, then Bernanke, OECD countries have continuously cut their 'oil linkage' of economic growth since the Oil Shocks of the 1970s. However, this ‘de-linkage’ shown by an average fall of about 10%-25% in barrels consumption per 1000 dollars of GNP through the period of about 1975-2000 was only apparent. Since about 1998, many of the OECD countries have in fact increased their oil burn per unit GNP. In addition, the 'historic' fall in oil intensity in OECD countries was accompanied by a strong opposing trend, of sharply rising natural gas burning, and gas intensity (average gas demand per capita, per year).

Apparent falls in oil intensity in the OECD countries have also been strongly helped by de-industrialisation and delocalisation, which ‘exports’ oil and energy demand for industrial production and raw materials outside the ‘postindustrial’ OECD. This enables the de-industrialised OECD to 'swap' services and hi-tech product exports (needing little oil), for oil-intensive consumer products, semi finished goods, and raw materials. Consequently, the 'oil balance of trade' is heavily in favor of the de-industrialised, or de-industrialising OECD countries, and amounted in 2007 to around 1 barrel/capita/year, on average, for the EU-15 countries. For the USA exactly the same 'hidden oil imports' due to trade structure also apply.

The reality of continued, high level dependence on fossil energy, and linkage with economic growth has likely contributed to the political momentum in EU countries resulting in their adoption of the 'energy-climate package' of Dec 2008. This plan includes a target of 20% renewable energy in the EU energy mix by 2020, but without automatic financing outside the linked target of 20% reduction in CO2 (and other) climate changing gas emissions, which is still essentially based on CO2 permits trading. Regarding aid, assistance and investment for alternate and renewable energy development outside Europe, the plan still essentially relies on the ‘clean development mechanism' (CDM), for financing support, through emissions credits, for non-fossil energy development in nonOECD, often low income associated and developing countries (the ADCs).

The CDM process is far from transparent, is small scale, and has no structure or plan for efficient development of all available renewable energy sources in the ADCs. In particular we can note the absence of any automatic financing mechanism, which is strongly needed to ensure constant and rapid progress in non-fossil energy development outside the OECD.

The ‘impossible’ challenge of Kyoto compliance

The outlook for climate change is increasingly sombre, for example near-term and major impacts related to the accelerated melt of the northern polar ice cap. This in turn reinforces calls for an accelerated deployment of alternate and renewable energy (ARE), but no multilateral framework for their growth has so far been proposed. The need for this is increased when we take expected fossil energy demand growth of the emerging economies, which are outside the present Kyoto framework except for the CDM process.

In these still fast-growing economies, we find their typical oil demand per capita, or oil intensity, is usually less than one-fifth of the average in European Union countries, and one-tenth the US average. For natural gas and electricity demand, the differential is very similar, or larger. Only with coal demand do we find a smaller differential relative to average per capita consumption in the OECD countries – noting of course that coal emits the highest-possible amount of climate change gases per unit of useful delivered energy.

The Kyoto Treaty has since its first ratification by present adhering countries lacked credibility because it excluded, and may for some while continue to exclude ‘large emitter’ countries with massive coal burns, specially USA, China or India, to which we can easily add Russia, Indonesia and Australia. In particular, one of the strongest constraints on bringing the world's largest coal burning countries into the Treaty will be their implied need to abandon or sharply reduce coal-based thermal electric power generation as their main choice for electric power, until and unless economically feasible 'clean coal technology' emerges.

Energy sector development will necessarily include the renewables, especially when the intrinsic high cost, and long lead-time choice of nuclear energy is confronted by the nearly unlimited national security risks of the « friendly atom ». Many renewable energy sources excluding geothermal, hydro and wind are essentially concentrated, or more richly-available in low-latitude or intertropical regions. Their efficient development requires attention to and acceptance of this reality, that is basic resource availability - this problem (of basic resource availability) explaining a certain part of the difficulty impeding faster renewable energy development in the Northern, higher latitude countries.

The nearly impossible challenge of Kyoto compliance for signatory countries – that they should reduce total emissions of greenhouses gases to 1990 levels - should logically focus attention and resources on faster development of non-fossil energy outside the OECD group. This will focus attention on ‘intertropical’ renewable energy resources, and related economic development such as food production and water supply. However, as at present, no plan, mechanisms or frameworks – including financing mechanisms - exist for accelerating and widening the process.

Using less Oil and Gas

For the OECD countries the most urgent priority is very simply – using less oil and gas. Oil burning is considered by the Kyoto process as more pollutive than equivalent natural gas burning (per unit energy), despite the fact that release of unburnt methane necessarily increases with total amounts produced, transported and consumed. Worldwide loss-in-production and transport losses of natural gas, by LNG tanker, through regasification, and by pipeline are very high – at least 10%, compared to well below 2% for oil. Estimates made by the World Bank and US satellite defense agencies for 2006 were that gas losses only associated with oil production (flared, vented gas and gas-in-liquids lost), these amounted to about 160 Billion cubic metres, more than 25% of total gas consumption in the EU-27.

Reduction of oil burning but with greater (sometimes much greater) use of gas is however favoured or prioritized by the Kyoto process. For ‘model compliant countries’, as for the other less compliant countries, the recent past of 1990-2005 shows that restored economic growth nearly always restores fossil energy demand growth.

As most European Union leaderships like to advance their political adherence to the goals of the Kyoto Treaty (reducing CO2 emissions, notably) we can compare this stated goal, with the reality of oil and gas consumption growths of some major EU countries through 1990-2005

Table 1
Growths of OIL and GAS consumption for selected EU-15 countries, 1990-2005

Country
National OIL consumption
National GAS consumption

Ireland
110%
100%

Spain
55%
350%

Portugal
45%
250%

Netherlands
40%
25%

Denmark
15%
175%

Germany
(small)
50%

France
(small)
45%

Italy
(small)
55%

U K
(small)
85%


Figures (approx) rounded to nearest 5%. ‘Small’ = 10% or less
(Data for above table/ Eurostat, BP Statistical Review)

The above short list excludes countries from the ‘new’ mostly East European EU member states, which are a special focus of ‘clean development’ as currently considered by the Kyoto process. The East European EU countries, which have attracted considerable industrial investment and EU ‘internal delocalisation’ to benefit from cheap labour and weak environmental legislation, have through 2005-2007 experienced growth of their oil and gas demand at rates up to 5% per year for oil, and 7%/year for gas. Their coal demand has also increased rapidly. This growth of fossil energy demand, similar to that in Russia, is due to so-called ‘re-industrialisation’. This trend follows the de-industrialisation of the 1990s, triggered by the political collapse of the Soviet Union and the economic collapse of Russia.

Economic collapse, we can note, can 'deliver' very radical and fast cuts in oil and gas demand – but this only stacks up an equally fast rebound, whenever economic growth returns. Collapse of oil and gas demand in the ex-Warsaw Pact countries and in Russia through about 1990-96, in the Russian case led to large but temporary export surpluses of Russian oil and gas. In energy and economic policy terms, this gave credibility to the New Economy myth of ‘unfettered market forces’ being able to overcome physical limits on supply. In fact and basically, oil and gas importer nations benefitted from the chaotic economic rout and mass poverty caused by 'market liberation' in Russia, under Yeltsin, with a rather sure strengthening of nationalist policies regarding energy resources by the following Putin and Medvedev regimes.

With Russia's economic recovery and re-industrialisation, energy demand spiraled up, the same way it had spiraled down, previously. The net result was that energy conservation, efficiency raising, and transition to renewable energy were completely sidelined by a classic 'boom-bust' (or in fact 'bust-boom') process in the economy and society. Energy transition was of low interest to policy makers or business deciders, and of little or no concern to the public.

Does Kyoto compliance mean Energy transition ?

As signed by over 180 countries, this presently political engagement of 'Kyoto compliance' can be contrasted with the implied target of reducing national oil and gas burn to 1990 levels in the ratifying countries. We could, for example, consider what annual percent cut in oil burn, and natural gas burn would be needed in the selected EU-15 countries listed above, if they were to re-achieve 1990 levels of oil and gas consumption by 2008-2012. Figures of over 20%-per-year would in some cases be needed, particularly for gas burning, proving (if needed) that the Kyoto Treaty cannot be considered as an 'energy transition' tool or strategy, except under some hypothetical and massive change in public opinion and political decision, making climate change mitigation a national emergency. If for any reason there was an attempt to achieve 'total compliance' in a short period of time, this would in fact require deep and permanent economic depression.

The Clean Development Mechanisms (CDMs), notably the supply of renewable energy based, or lower emission conventional fossil fuel technology to associated developing countries (for the EU this is the ACP group of countries), are in fact equally needed inside the ratifying countries. For several ratifying countries, even the current and heavily reworked emission cutting targets are as high as 3.5% - 4.5%/year, strongly implying that very intensive, and organized plans for national oil and gas saving, and development of alternate and renewable energy must be set in place very quickly. We must add that due to Peak Oil and Peak Gas, targets at least as high as these will be needed for reducing oil and gas intensity, in all the OECD countries.

It could be argued that ratifying states will have no option but to seek compliance procedures other than national oil and gas consumption cuts. This will include extension of tradable licenses to pollute, perhaps worldwide and to more sectors (like transport and agriculture) and rapid growth of CDM, so as to buy or obtain sufficient ‘emission credits’. In the absence of this cumbersome, opaque and probably very slow process, we may easily find that, by 2012, total CO2 emissions have simply grown, and the free markets for oil and gas are in permanent extreme-price rout.

In reality, greenhouse gas emission cuts should be as high as 7.5% or more, each year, with ideally about the same amounts of annual cuts in oil and gas burn - but few if any economists would care to estimate what these heroic cuts would do to the economy in the absence of effective multilateral frameworks. We can however compare these huge implicit targets with actual oil and gas demand cuts during the 1980-1983 world recession: this as already noted led to about an annual fall of 3.5% in world oil demand, for 3 years. This recession was the worst-ever since the 1929-36 Great Depression, and at least concerning the severity of its onset was close to the start of the present recession in 2008-2009.

During this recession, world oil demand consecutively fell for 3 years, for the first time in the entire period since World War 2. OECD-wide cuts in oil demand, over 3 consecutive years (1980-1982), were about 9.6%. By 1983-1984, world oil demand was again growing.

Even worse in relation to implied targets for national fossil energy demand cuts, world gas demand did not follow oil demand, but increased from about 1300 to 1340 Million tons oil equivalent (Mtoe) in 1980-1983. Since then, world gas demand has increased much faster than oil demand, and is about 2650 Mtoe today.

The place of renewable energy based CDMs

The Kyoto Treaty is above all still-fluid, with unfinalized objectives, calculation bases and methods. Targets for emission cuts are still imprecise and unsure, and have been ‘politically sweetened’, for example regarding coal dependence for electric power production (about 55% of world electricity is coal based). Emissions reduction inside the ratifying countries will have to considerably increase in a short period of time, but because of the economic and technical difficulty of this, the CDMs in the ADCs and in the emerging economies will become an inescapable, vital part of the framework and process for compliance.

This context must focus the intertropical renewable energy technologies and systems, where potentials are so large they offer some scope for reducing or limiting the inevitable and large impacts of world oil depletion, and world natural gas depletion. While denial of impending depletion can be maintained a short while longer, these inevitable trends will soon exercise leverage on policy and public opinion, as depletion accelerates rather fast in the next 5 years.

The intertropical renewables include real potentials for large-area solar, large-area biomass and large scale Ocean Thermal Energy Conversion (OTEC) systems and processes, also including electric power system interconnexion and integration. Particularly in the case of OTEC, solar and biomass energy development, the net outputs for economically feasible projects will necessarily include non energy products, for example fish and crustaceans in the case of OTEC installations, and food commodities in the case of large area biomass and solar energy projects.

Probably the key element is scale. The merited reproach of renewable energy technology is that it is small-scale, high-cost and unreliable, as well as imposing multiple and strong economic, social, cultural or other constraints. This concerns many of the renewables in high latitude environments, where only wind electric power (among the 'new renewables') has radically grown and been easily-integrated in existing, fossil-based energy mixes. High land costs and incompatible existing infrastructures, and especially the cultural values of energy-intensive society also reduce the applicability and feasibility of fast growth of alternate and renewable energy in the higher latitude, Kyoto Treaty ratifying countries.

This being the case it is therefore rational to re-focus attention to the intertropical renewables, and focus North-South cooperation in the rapid and efficient, large-scale integration of this form of economic and infrastructure development. CDMs offer an avenue and focus for this effort. Without large-scale and preferably automatic financing mechanisms it is doubtful if fast progress can be achieved in this domain – and in fact in global Energy Transition.

Conclusions

Restoration of global economic growth – the current N°1 target of all political leaderships worldwide – will inevitably restore global oil and gas demand, but within a short period this will face structural undersupply of markets.

Political and public opinion support to strong action for limiting climate change and developing alternate and renewable energy is nearly total, but no global plan, programme and, in particular, multilateral financing mechanism and framework exists.

The need to reduce oil and gas intensity of the OECD countries is implicitly accepted or targeted by Kyoto Treaty application, specially in the EU-27 countries – which however will need to obtain, or buy, very large amounts of emission credits through the CDM procedure in the implementation period of 2008-2012.

Renewable energy based CDMs, in this context, will become of great economic significance and political interest. This will notably include the ‘intertropical renewables’, which not only have large economic potential, but also have very large energy supply potentials.

Extending the Kyoto Treaty for Energy Transition faces numerous obstacles, suggesting that a linked, multilateral transition plan, programme and frameworks – specially including financing mechanisms – must be quickly proposed, debated and put in place.

Saturday, 27 September 2008

On peak Oil - ASPO

Monday, September 22, was the first day of the formal meeting, following the Breakout sessions on Sunday. The meeting had over 500 attendees, so that all the seats were full as the meeting started, and there were soon folk standing at the back of the hall. Kjell Aleklett, President of ASPO-International, began with a brief review of world conditions before Sally Odland moderated the first session which was an introduction, or reminder, of the basics of oil generation and exploration. This was provided by Ken Verosub, a professor of geology at UC Davis. Starting with the basics of oil formation, he pointed out the combination of different geological events, and the resulting layers of rock that have to be formed in place in order to create, capture and then trap the rock, and the need for geological movement to then concentrate the supply so that it can be recovered.

He pointed out that the oil has to be “cooked” just the right amount to convert it to oil, which requires a certain depth of burial, at one stage in its history. He illustrated the events through the creation of oil traps around a salt dome. To find the traps, the methodology has had to get more refined. Originally, two-dimensional models of the subsurface were achieved by using exploding sound sources and a small array of geophones to pick up reflected sound waves and thus map the layers of rock beneath the surface. The systems today can use computer analysis to generate three-dimensional images which can be projected into rooms that allow the geologists a degree of exploration not available in earlier years.

He went on to explain how a “Hubbert” curve of depletion is formed for a given oil field, from the accumulation of production rise and decline of the individual wells in a field. He mentioned that the results of the combination of geological rocks that have to come together to provide a viable field restrict potential discoveries to relatively known places. (These do not include many of the places where the “Drill here, Drill now” message is enunciated). Finding where there is enough oil to justify a well is neither easy nor cheap. He then used some simplified math to show that the amount of oil that is left is already diminished to the point that, in the best circumstance, oil production will peak in the 2010 to 2015 time frame. This assumes a world max production of around 100 mbd (we’re at about 86 now).

Sally Odland works at the Lamont-Doherty Laboratory where just recently they have acquired an ex-industrial sesmic survey ship. Because of the recent cost increases in ship repair, and the fact that the industry kept hiring away the team members, restoring the boat took much longer and more funds than anticipated. The costs of fuel now mandate that the ship be rented out to industry for 5 months of the year, so that the School can afford to use it for the other 7 months.

Sadly Gil Mull one of those who helped drive the first exploration well in the North Slope of Alaska could not make the conference, but Sally went through the slides of his presentation, and these will be available at the ASPO website within a couple of days, and are well worth seeing.

Jeremy Gilbert tried to sound a Wake-up call. He noted that in many reports of the remaining reserves and production the only reliable numbers are often the page numbers. He now sees that the projections of the arrival of peak oil have been optimistic, and that the risks have got worse, as the peak point approaches. He noted that as world gas prices continue to rise, the Kingdom of Saudi Arabia (KSA) has just cut oil and gas prices (which increases domestic demand). He spoke disparagingly of previous IEA projections, but noted that the agency has recently undergone a change in heart and now sees three problem areas:

(1) the geological constraints on finding large fields of oil;
(2) the lack of investment able to exploit these increasingly difficult and expensive sites; and
(3) the much greater production problems that working in these more difficult environments bring.

He bemoaned the renewable energy mantra that “solar, wind or something, UFO’s perhaps, will bring an answer to our crisis.”

The problem is that we are finding only smaller fields each year, and must thus find more of them to make up for depletion. Those who call for more drilling need to learn that this will take time (given that all the rigs available are already busy, and that permitting etc all takes time). And as for new technology, this is usually applied in harder-to-produce rock, where its implementation only brings overall recovery values up to what they were originally estimated to be. He noted that while we have doubled the number of drilling rigs (around 3,500) in recent years, overall production levels have remained the same. And since Russia likely peaked last year, we are now running on borrowed time.

In short, it is past time that we wake up to the crisis at our door. He recommended the Deutsche Bank Report “From shale to shining shale” which is a critical look at shale gas plays.

Morey Wolfson of ASPO (and the Colorado Governor’s office) then presented a truly impressive new addition to the ASPO web site, the new Google Earth Global Energy Infrastructure tour . The tour had been put onto a 20-min video that he ran. Having watched it, I really encourage you to check out the site. It shows all aspects of the energy issue, and finds and shows the places that are important to it. (You could count the tankers in the Malacca Straits).

The next speaker was Matt Simmons whom I have heard on numerous occasions, but who this time talked into a silence as intense as any I have heard. He scared the audience in a way I have not seen before, perhaps because we were all much more willing to believe this time, given his record from the past.

He noted at the beginning of his talk that there are 150 miles of unit trains leave Wyoming every day. (Ed note – a 1-mile unit train contains 110 rail cars of 100 tons of coal each.) He talked about the elements of risk that we have now forgotten how to apply. He noted that we have forgotten how savage a collapse can be, or how fast it can occur. (Enron unfolded in 7 days. The events of the last week showed how even faster collapse can come now). The delays in bringing oil production on line from the recent hurricanes will only underline this point.

As a result places are running out of gasoline (Ed note the two folk next to me at the table were from Atlanta and Tennessee and neither town had any gas stations left with fuel, as far as they knew). The South is going to have to cope with a growing shortage until more of the infrastructure comes back on line, and that may be weeks into the future. This will get worse if all motorists suddenly start topping up their tanks, since this will sensibly empty the floating reserve that is the volume moving through the system at the moment. This will, in turn, remove confidence in the system, which will make the situation worse. The heating oil situation for the North East is only going to get worse in this scenario. And there is no data on how close to a collapse we currently are. And the collapse could well be a disaster equivalent to that of Gustav/Ike squared.

He noted that contrary to the solutions for the financial world there is no insurance policy that can help with Peak Oil. The paradigm is changing and sadly the world is still Energy Illiterate.

He also commented, having talked with producers of the new gas wells being drilled in the various shale formations around the country, that this is close to, if not already at a point where the energy costs to sink the well are not returned by the gas recovered from it. Further in talking with Baker Hughes folk (the ones that track the wells that are drilled around the world), he found that those who thought depletion in old fields was less than 5% got no takers from his audience, 60% of the audience thought that depletion was between 6 and 8% and the remainder thought that it was in the range above 10%. (As noted earlier the assumed value is often taken as somewhere between 2 & 4% with TOD using around 4.5%). It was by far the most pessimistic that I have heard him give.

We then broke for lunch and I was confronted by the question as to whether the situation would be so bad that we would not be able to come to a meeting, if one is held next year. Then the annual M King Hubbert Awards were presented, and we will talk about them in a separate post.

Jim Buckee of Talisman gave the luncheon address, talking on the production company viewpoint. He differentiated between the volume available in a field, and the production rates that can be achieved at it. He said that Peak Oil is real, and illustrated this conclusion by discussing the decline in production rate from virtually all the major oilfields of the world. 90% of production comes from 10% of the fields and we know which they are. He then went through the list, which was dominated by the comment “in terminal exponential decline.” The depletion rate he quoted (after the 50% production point) was on average 10%.

In discussing the KSA fields he said that these also will follow these rules, as Abqaiq already is. Talk of increasing post peak production with Enhanced Oil Recovery Techniques does not spell out what these might be, and his opinion was that this was a likely myth. Recent Natural Gas Liquid (NGL) increases have hidden the likely peaking of crude oil, but this will only last a short interval more before it too will start to decline.

He did give a realistic reason why the major oil companies have not admitted to Peak Oil, pointing out that it will lead to reactions very similar to those that hit the financial community last week. Nevertheless with resource nationalism rising this makes further exploration tough; makes it difficult for industry to attract people; has doubled production costs over the last 3 years; and leads to a constant fight against field declines.

He pointed out that there is no opposite to a train wreck. Further nationalism just means that the state takes a larger slice of a pie of fixed size. The change in production from majors to IOCs to NOCs has led to increasingly smaller production levels at higher costs. He felt we would hold production at the current level of around 85 mbd for another decade, but only because we will soon see effective rationing of this supply.

I then took a short break and missed the first after-lunch talks so any input on those would be helpful. I came back as Hermann Franssen was taking about the role of the IEA, and its recognition that times have changed, and as a result that its predictions of the future supply are changing also. He tried to get the audience to understand the world from the KSA point of view. That they see a constant threat to the price of oil, and their income, and thus act very protectively to ensure that they can continue to make money selling their oil. But they are also conscious that they want to leave some oil for their offspring, and thus are very conservative in their production management. However Aramco is very compartmentalized, and thus only very few people really know the numbers and what is going on. And some of those that do are very pessimistic.

We must change things, and this requires successful “suits” going to Washington with a message. This message should include the need to fix the American transport system (against which are marshaled all those that have an interest in the highway system as it currently stands).

The world’s stock or cars will double in the next 17 years, but the Middle East is close to reaching an upper sustainable production level, and non-OPEC has peaked. Thus, the best we can hope for is in the 90 – 105 mbd range. He was nervous of the foreign policy of Gazprom. And while they are in the Middle East already, it must be remembered that America has zero credibility in this region.

Andy Weissman in the first of two talks, covered Electricity and Gas, noting that their crisis points are not yet here, though close. We could easily soon see natural gas (NG) prices that equate to $150/bbl of oil. The supplies of NG that have become so critical to powering the national power grid are going to decline in volume, and thus increase in price. LNG is the marginal production we will come to rely on, and this will impose an additional premium on price. He anticipates global shortages of LNG by 2012/2013, with devastating consequences. He sees 5 essential requirements to meeting our needs:

1. Greater sense of urgency needed
2. Replace the IEA
3. Deelop a national strategy to review energy use across the board
4. Maximize all cost effective domestic resources
5. Use the best expertise available to review the options.

Jim Puplava felt that the worst is yet to come. He relies on the Chicago Federal National Activity Index. When this falls below -0.7, then there will be recession (it’s close). He is recommending a Prius to help in the time when gas rationing arrives. We are at a point where we have maximized the rig count and yet production is not rising. He feels it is ludicrous not to expect a decline in non-OPEC production. We have an immediate crisis and need to take action. We are talking about the wrong set of solutions and need to change the mind set. The opinion of the experts has been shaken and the lack of good information does not help.

After the break John Theobald introduced the next session with the opening section of the film Soylent Green which, for those who have forgotten, is people. (See the movie).

He then introduced David Fridley who reviewed the recent growth and change in condition in China. It is an economy where coal dominates supply (at around 97% of the resource base) and with a reserve of around 238 billion tons, is likely to continue to do so into the future.

Biomass (rice hulls and similar debris) is used extensively in the hinterland as a fuel source for cooking and heating. Industry otherwise dominates consumption, while transport needs have been small. However, the coal consumption has out-stripped the capabilities of rail to carry it, and thus trucks are increasingly used. These increase the energy cost for delivery by a factor of 16, but China has few other options. China has been busy buying up resources all around the world; it must do so to meet its needs. It is looking at Coal to Liquid and Coal to Chemical plants with the first CTL going in to Shenhua in Inner Mongolia. But it will be a large consumer of water at around 10 tons for every ton of liquid produced, in an area that has little water to spare. Ethanol was not a success, so they now produce methanol and blend this into gasoline.

Diesel is dominant in transportation. There are very few private automobiles, compared to other countries.

Vince Matthews then talked about Peak everything else, and included China in this analysis which saw China seeking major volumes of many commodities and in the process driving up the price. There were many examples given in the slide show of these increases, over a range of minerals. Steel price for example has risen six-fold. Where prices have not yet risen dramatically it has been because of long-term contracts that control price until they expire.

We forget that much of our NG is imported from Canada, and as their needs rise and production falls their exports to us will decline. Thus even though the rig count has increased, we are still in trouble. 49 coal plants came off line last year, to be replaced by NG, but while the number of wells drilled increased from 9,000 to 30,180 over the past few years, production has not matched this increase. Production from the Rockies region is flattening out.

Many folk talk about our redemption coming through increased use of photovoltaics (PV) and solar energy, not recognizing that solar cells require rare earth elements that are largely falling under the control of China, and whose price continues to rocket upwards. China is searching diligently for mines and prospects to acquire (doesn’t really matter what the mineral) and is becoming much more successful than ourselves. (though he noted that Shell is buying up the water rights in Colorado around the oil shale area).

The days activity were summarized by Robert Hirsch, who again emphasized the magnitude of the problem – just matching 1% of global need requires 850,000 bd of oil equivalent. He looked at certain one-liner phrases that had cropped up over the day. “Willful human blindness” was one of the more memorable, as was “Peak roads”.

And then we adjourned to network. As I mentioned in the earlier post there were many of our readers at the meeting, it was a great pleasure for us to meet and chat with many of those, particularly the ones who don’t often comment. And to those as other attendees, I do ask that you expand on my brief review, fill in the blanks and add your impressions.

Thanks.

Wednesday, 23 April 2008

What they don't want you to know about the coming oil crisis

Soaring fuel prices, rumours of winter power cuts, panic over the gas supply from Russia, abrupt changes to forecasts of crude output... Is something sinister going on? Yes, says former oil man Jeremy Leggett, and it's time to face the fact that the supplies we so depend on are going to run out

By Jeremy Leggett
Friday, 20 January 2006

A spectre is haunting Europe - the spectre of an acute, civilisation-changing energy crisis. The latest wobble over disruptions to gas supplies from Russia is merely the latest in a series of reminders of how dependent our economies are on growing supplies of oil and gas. On Wednesday, Gazprom's deputy chairman was in London reassuring Britain that there would be no risk of disruption to British gas supplies in the fall-out from the ongoing spat between Russia and Ukraine over pricing. The very next day, temperatures in Moscow broke a 50-year record, plunging to minus 30C. Gas normally exported was diverted to the home front. Supplies to the West fell.

In December, Sir Digby Jones, director-general of the CBI, warned that any shortfall in gas could cause disaster for British industry. The problem, he said, was the likelihood - as forecast by the Met Office - of a particularly cold British winter. This would mean more gas burning in homes and power plants than our liberalised energy market - or its infrastructure - might be able to supply. There aren't enough pipelines from the continent to carry the imported gas that we need now that our North Sea production is dropping. Tankers that are supposed to be bringing liquefied natural gas (LNG) to the UK are instead following market forces and going to the US, where gas prices have rocketed even higher than they have here. Meanwhile, not enough gas has been stockpiled, because market forces don't favour that kind of thing in relatively warm years.

We shouldn't panic, insisted energy minister Malcolm Wicks, because British Gas is being very grown up about it, and anyway all this will be sorted out by 2007 when a new pipeline and more LNG plants come on stream. Sceptics pointed out that our gas reserves were down to 11 days, compared with an average of 55 on the Continent. That was before the concerns about Russian supplies. If the thermometers fall in the UK it is still quite possible that UK firms may have to stop using gas for one day a week, or even that the suppliers will also have to introduce rolling power cuts by postcode.

Meanwhile, domestic gas bills, which rose by more than a third last year, are expected to rise even higher in the next few months. For many people, such fluctuations have lethal implications. Last winter, there were some 35,000 "excess winter deaths" in the UK, most of them attributable to old people not being able to keep warm enough; and last winter was a relatively mild one.

All this concerns gas, of which there are undoubtedly huge proved reserves left in the ground (even if half of them are in Russia and Iran). Consider oil. The geopolitical risks are the same. Only last week Iran threatened to retaliate by cutting oil supplies if Europe continued to meddle in what it sees as its right to develop a nuclear programme. Where oil differs from gas is that a debate is fast emerging about whether we have enough reserves to meet needs in the short term - even if geopolitics don't kick in and the current infrastructure keeps working as it should. At the annual summit of the Organisation of the Petroleum Exporting Countries (Opec) in December, Kuwait told the world that, without urgent outside help, it could not continue to pump oil at its customary rate. The Kuwaiti oil minister invited Western oil companies back into his country to see if they could do better. The very next day the US government quietly slashed 11 million barrels a day (that's equivalent to the entire daily output of Saudi Arabia) from its forecast of oil production levels for 2025.

To most people who noticed them, such announcements will have seemed remote and academic. In fact, as I shall attempt to explain, they represent the tip of a very big iceberg indeed: one that holds the potential to sink the global economy.

We have allowed oil to become vital to virtually everything we do. Ninety per cent of all our transportation, whether by land, air or sea, is fuelled by oil. Ninety-five per cent of all goods in shops involve the use of oil. Ninety-five per cent of all our food products require oil use. Just to farm a single cow and deliver it to market requires six barrels of oil, enough to drive a car from New York to Los Angeles. The world consumes more than 80 million barrels of oil a day, 29 billion barrels a year, at the time of writing. This figure is rising fast, as it has done for decades. The almost universal expectation is that it will keep doing so for years to come. The US government assumes that global demand will grow to around 120 million barrels a day, 43 billion barrels a year, by 2025. Few question the feasibility of this requirement, or the oil industry's ability to meet it.

They should, because the oil industry won't come close to producing 120 million barrels a day; nor, for reasons that I will discuss later, is there any prospect of the shortfall being taken up by gas. In other words, the most basic of the foundations of our assumptions of future economic wellbeing is rotten. Our society is in a state of collective denial that has no precedent in history, in terms of its scale and implications.

Of the current global demand for oil, America consumes a quarter. Because domestic oil production has been falling steadily for 35 years, with demand rising equally steadily, America's relative share is set to grow, and with it her imports of oil. Of America's current daily consumption of 20 million barrels, 5 million are imported from the Middle East, where almost two-thirds of the world's oil reserves lie in a region of especially intense and long-lived conflicts. Every day, 15 million barrels pass in tankers through the narrow Straits of Hormuz, in the troubled waters between Saudi Arabia and Iran. The US government could wipe out the need for all their 5 million barrels, and staunch the flow of much blood in the process, by requiring its domestic automobile industry to increase the fuel efficiency of autos and light trucks by a mere 2.7 miles per gallon. But instead it allows General Motors and the rest to build ever more oil-profligate vehicles. Some sports utility vehicles (SUVs) average just four miles per gallon. The SUV market share in the US was 2 per cent in 1975. By 2003 it was 24 per cent. In consequence, average US vehicle fuel efficiency fell between 1987 and 2001, from 26.2 to 24.4 miles per gallon. This at a time when other countries were producing cars capable of up to 60 miles per gallon.

Most US presidents since the Second World War have ordered military action of some sort in the Middle East. American leaders may prefer to dress their military entanglements east of Suez in the rhetoric of democracy-building, but the long-running strategic theme is obvious. It was stated most clearly, paradoxically, by the most liberal of them. In 1980 Jimmy Carter declared access to the Persian Gulf a national interest to be protected "by any means necessary, including military force". This the US has been doing ever since, clocking up a bill measured in the hundreds of billions of dollars, and counting. With such a strategy comes a disquieting descent into moral ambiguity, at least in the minds of something approaching half the country. The nation that gave the world such landmarks in the annals of democracy as the Marshall Plan is forced by deepening oil dependency into a foreign-policy maze that involves arming some despotic regimes, bombing others, and scrabbling for reasons to make the whole construct hang together.

America is not alone in her addiction and her dilemmas. The motorways of Europe now extend from Clydeside to Calabria, Lisbon to Lithuania. Agricultural produce that could have been grown for local consumption rides along these arteries the length and breadth of the European Union. The Chinese attempt to emulate this model even as they enforce production downtime in factories because of diesel shortages and despair that their vast national acreage seems to play host to so little oil.

There is a similar picture with gas. The scale of the addiction - and of the resource - is smaller. But the patterns are the same: growing demand for a finite resource, most of which has to be imported from the Middle East and the former Soviet Union. Even a temporary blip in supply, such as occurred in Europe this week, is enough to create something close to panic among governments. But it is oil that keeps our civilisation functioning.

This half-century of deepening oil dependency would be difficult to understand even if oil were known to be in endless supply. But what makes the depth of the current global addiction especially bewildering is that, for the entire time we have been sliding into the trap, we have known that oil is in fact in limited supply. At current rates of use, the global tank is going to run too low to fuel the growing demand sooner rather than later this century. This is not a controversial statement. It is just a question of when.

Oil is a finite resource, and there will come a day, inevitably, when we reach the highest amount of oil that can ever be pumped. Beyond that day - which we can think of as the topping point, or "peak oil" as it is often called - will lie a progressive overall decline in production. Putting the same question a different way, then, at the current prodigious global demand levels, where does oil's topping point lie?

This is a question, I contend, that will come to dominate the affairs of nations before this first decade of the new century is out.

Already, a battle is raging, largely behind the scenes, about when we reach the topping point, and what will happen when we do. In one camp, those I shall call the "late toppers", are the people who tell us that 2 trillion barrels of oil or more remain to be exploited in oil reserves and reasonably expectable future discoveries. This camp includes almost all oil companies, governments and their agencies, most financial analysts, and most business journalists. As you might expect, given this line-up, the late toppers hold the ascendancy in the argument as things stand.

In the other camp are a group of dissident experts, whom I shall call the "early toppers". They are mostly people who - like me - have worked in the heart of the oil industry, the majority of them geologists, many of them members of an umbrella organisation called the Association for the Study of Peak Oil (ASPO). They are joined by a small but growing number of analysts and journalists. The early toppers reckon that 1 trillion barrels of oil, or less, are left.

In a society that has allowed its economies to become geared almost inextricably to growing supplies of cheap oil, the difference between 1 and 2 trillion barrels is seismic. It is roughly the difference between a full Lake Geneva and a half-full one, were that lake full of oil and not water. If 2 trillion barrels of oil or more indeed remain, the topping point lies far away in the 2030s. The "growing" and "cheap" parts of the oil-supply equation are feasible until then, at least in principle, and we have enough time to bring in the alternatives to oil. If only 1 trillion barrels remain, however, the topping point will arrive some time soon, and certainly before this decade is out. The "growing" and "cheap" parts of the oil-supply equation become impossible, and there probably isn't even enough time to make a sustainable transition to alternatives.

Should the early toppers be right, recent history provides clear signposts to what would happen. There have been five price peaks since 1965, all of them followed by economic recessions of varying severity: after the 1973 Yom Kippur War; in 1979-80 after the Iranian revolution and the outbreak of the Iran-Iraq war; in 1990, with the first Gulf War; in 1997, with the Asian financial crisis; and in 2000, with the dot.com collapse. The most intense peaks were the first two. In 1973, the oil price more than doubled, reaching around $35 per barrel in modern value. The cause was an embargo by Opec, led by Saudi Arabia, and triggered through overt American support for Israel at the time of the Yom Kippur War. World oil supplies fell only 9 per cent, and the crisis lasted only for a few months, but the effect was simple and memorable for those who lived through it: widespread panic.

The embargo was short-lived, largely because the Saudis feared that if they kept it up they would create a global depression that would cripple Western economies, and hence their own. As it was, the short embargo created an economic recession. I spent much of it doing my homework by candlelight. I didn't see much of my father. He was queuing for petrol.

The second, and worst, oil shock was triggered by the toppling of the Shah of Iran in 1979, and prolonged by the outbreak of the Iran-Iraq War in 1980. The first shock did not push prices as high as those at the time of writing, but the second shock pushed them to more than $80 a barrel in today's terms. Again panic reigned, even though the interruption to global supplies was only four per cent.

The crisis ended in 1981 when the price fell for three main reasons. First, the Saudis opened their taps. With their huge reserves, mostly discovered in the 1940s and 1950s, they were able to act as a "swing producer", increasing the flow to bring prices down just as they had decreased it in 1973 to push prices up. Second, new oil came onstream from giant oilfields in more stable regions of the globe, including the North Sea. Third, large amounts of oil were released from government and corporate stockpiles.

These three reasons are high on the list of why we should worry today, because in the face of another shock things could not be resolved in a similar way. First, there are grounds to worry that the Saudis are pumping at or near their peak, no longer able to act as a swing producer. Second, the early toppers fear that there are no more giant oilfields left to find, much less wholly new oil provinces like the North Sea. Third, there is not much oil in storage, relative to current demand. The modern world works on the principle of just-in-time delivery (another factor in the short-term crisis facing Britain this winter). Our economies, overall, are more efficient in their use of oil than in the 1970s - a point much emphasised by late toppers - but the sheer weight of demand is much higher today, and it is still growing without an end in sight, or even strong governmental or corporate leadership demands that there should be one.

The cost of extracting a barrel of oil from the ground doesn't change much. A good rule of thumb might be $5 a barrel today, though obviously there are variations between oilfields in different geographic and political settings. What influences the price of oil most is confidence in supply and demand among oil traders. Oil prices are already at their second highest levels ever, in real terms, at the time of writing. Some pundits now profess that they will soon reach their highest ever levels, in modern value. This situation has arisen for many reasons - but these do not include the fear that the oil-production topping point is near. Early-topper arguments are not on the radar screens of the oil traders and analysts, as things stand. Should that happen, and should the mood of the packs on the trading floors flip to the view that we live no longer in a world of growing supplies of oil, but rather shrinking ones, the price will soar north of $100 a barrel very quickly.

An investor friend of mine has already concluded that this scenario is inevitable. He has switched his investment portfolio to anticipate the moment of "market realisation". This peak panic point, as he calls it, will not be limited to oil traders. The worlds of economics and business routinely assume a future in which oil is in growing and cheap supply.

Economists tend to assume that their "price mechanism" will apply. Higher prices will lead to more attractive conditions for exploration. This will lead to more oil being found, and the inevitable discoveries will bring the price down until the next cycle. Massive corporations write five-year plans based on assumed access to cheap oil and gas. Think, for example, how important such access must be to a chemical company dealing in plastics derived from oil. Or a food-processing company reliant on oil for every stage of food transportation, including of perishable final products, plus almost all the bottling and packaging and many of the preservatives and additives.

But suppose the economists and corporate planners are wrong? Imagine the collapse of confidence when a critical mass of financial analysts, across the full breadth of sectors in a stock exchange, conclude that they are wrong?

If the topping point is indeed imminent, economic depression looms as a real prospect. The Saudis were right to be scared of this possibility in the 1970s. In the Great Depression of the 1930s, triggered in 1929 by the worst-ever stock-market crash, economic hardship was horrific. World trade fell by a breathtaking 62 per cent between 1929 and 1932. The widespread unemployment and social unrest bred Fascism in many countries, in some nations on a scale that would change the course of history. As for the stock markets, it took them 50 years to regain their pre-collapse value in real terms.

There are so many things to worry about in the fall-out from a premature peak in oil production. Here is one that gives me particular nightmares. When I and some of the oil-supply whistleblowers addressed a conference on oil depletion in the formerly oil-rich nation known as Scotland last year, five leaders of the British National Party sat in the audience. They said nothing. They just listened, and learnt, and no doubt reflected that the far right does well in tough times.

The stakes are high with energy policy. Higher than most people dream of when they flip a light switch.

The question of how much oil is left actually breaks down into three sub-questions. First, the existing-reserves question: how much oil is there in discovered oilfields, mapped out, proved and ready to be exploited? Second, the reserves-addition question: how much oil remains to be added via new discoveries, enhanced recovery techniques and so called unconventional oil? Finally, the speed-to-market question: how fast can the oil, once found, be delivered to fuel tanks?

One also needs to consider these questions both in relation not only to conventional oil - that is, liquid that sits underground in a reservoir under pressure - but also unconventional oil (which consists of sands and shales containing solidified oil or solid tar or bitumen deposits; is mostly found in Canada, the United States and Venezuela; and carries considerable environmental extraction costs). The same applies, strictly speaking, to deep water oil (much-hyped by Exxon a few years ago but already widely thought to have peaked) and gas, whose patterns of availability tend to mirror those of oil, and which already faces its own problems of increasing consumption (gas demand is expected to double by 2030, reaching 4.3 billion tonnes of oil equivalent a year, of which over 40 per cent will be used for power generation).

I find it hard to feel optimistic about any of the answers.

I say this as someone who, for most of the 1980s, was a creature of Big Oil. I taught petroleum engineers and geologists at the grandiose-sounding but in fact quite tatty Royal School of Mines, part of Imperial College of Science and Technology in London. My researches on the history of the planet included such issues as the source of oil, and was funded by BP and Shell, among others. I also consulted for oil companies. In those days, I was psychologically insulated in a quest for the respect of my peer group, and highly selective as a consequence with the information I allowed on to my radar screen. The build-up of greenhouse gases (a separate but scarcely less urgent reason for worrying about our dependence on oil) registered nowhere on my list of concerns. I had concerns about oil depletion, but only in the sense that this cloaked my quest to find more with a certain nobility, at least in my own eyes.

But one thing that was clear to me even then was that most of the planet has not a drop of drillable oil. Almost everywhere geologists have looked - which means everywhere by now, at least at some level of exploration - there is no oil because one or more of the key geological requirements is missing. Even when all the boxes can be ticked, you can end up finding no oil. Only one well drilled in every 10 finds oil. Only one in a hundred finds an important oilfield. And the more wells that are drilled in a province or country, the smaller the oilfields generally tend to become.

In my book, Half Gone, I examine in detail the prospects of future viability for each of the major sources described above. But one of the most important arguments against over-confidence in future reserves can be summarised simply.

Think of all that expertise that had been built up since the first oil was drilled in 1859. Think of all the trillions of dollars in oil revenues stacked up in the 20th century, and all the hundreds of billions spent on exploration and the hi-tech toys of exploration in the half-century since the biggest Saudi and Kuwait fields were discovered. Think of the sophistication of the seismic reflection profiling offshore. Consider the all-important oil source rocks, and how relatively limited they are in distribution. As BP's former reserves co-ordinator, Francis Harper, told the Energy Institute in November 2004: "We know how many world class source-rocks there are, and where they are." Wouldn't it be reasonable to think that with modern technology at least one more field of more than 80 billion barrels might have been found somewhere, in all the places the companies have looked these last 50 years?

The third-biggest oilfield in the world is Samotlor, discovered in 1961, with 20 billion barrels. The fourth-biggest is Safaniya, discovered in 1951, at which time it also supposedly contained 20 billion barrels. The fifth-biggest is Lagunillas, discovered in 1926, containing 14 billion barrels. Only around 50 super-giant oilfields have ever been found, and the most recent, in 2000, was the first in 25 years: the problematically acidic 9-12 billion barrel Kashagan field in Kazakhstan.

Let us reduce our scale of scrutiny from the super-giant to the merely giant. Half the world's oil lies in its 100 largest fields, and all of these hold 2 billion barrels or more, and almost all of them were discovered more than a quarter of a century ago. Consider the recent record of discoveries of giant oil- and gas-fields of over 500 million barrels of oil or oil equivalent. Half a billion barrels - the definition of a "giant" field - sounds a lot. But since the world is eating up more than 80 million barrels of oil a day at the moment, it is in fact less than a week's global supply. In 2000 there were 16 discoveries of 500 million barrels of oil equivalent or bigger. In 2001 there were nine. In 2002 there were just two. In 2003 there were none.

On the basis of this kind of evidence, is the industry going to meet the steady increase in demand with new discoveries? Francis Harper, for one, doesn't seem to think so. "Worldwide, the frequency of finding giant oil provinces and super-giant oilfields has been declining for decades and will not be reversed," he told an agog audience at a November 2004 London conference on oil depletion held in the Energy Institute. "We've looked around the world many times. I'd say there is no North Sea out there. There certainly isn't a Saudi Arabia."

In January 2004, the early toppers' case suddenly looked a good deal more worryingly feasible to those who have tended to take the late toppers at face value. Shell's then chairman, Sir Philip Watts, told investors that the company had overestimated its reserves by more than 20 per cent. By March, internal e-mails had been requisitioned by lawyers and these made it clear that the chairman and his head of exploration had known about this problem for some time, and had deliberately lied about it. Both men departed the scene.

Shell's corporate scandal is dramatic enough. But there is a clear risk that it is only the tip of an iceberg. Today, many people in the oil industry appear to be under pressure when it comes to supplies of oil. "There is something strange going on in this industry," Shell's replacement boss, CEO Jeroen van der Veer, told the press in November 2004. He suspects that other companies have the same problems he inherited. The Economist drew the following conclusion: "Industry analysts and investors are quietly saying that Mr van der Veer may be right, and another big reserves scandal may be brewing somewhere."

Against this unpromising start, how much oil do we think the oil companies have found to date? Call BP for a bit of help with the answer and you'll be sent their annual BP Statistical Review of World Energy. In it, you'll see lists of data for national proven oil reserves. Add these up to a global total of oil reserves year by year, and you'll see the total creep reassuringly upwards over time. The chart on page seven shows those figures, from successive annual reviews split into the Middle East and the rest of the world. Global reserves rise from just over 600 billion barrels in 1970 to almost double that today: 1,147 billion barrels at the last count, up to and including 2003.

So what's the problem? The first hint that something might be amiss comes, as is so often the case in life, in the small print. Squinting through a lens if you have anything but perfect eyesight, you will find that the data in BP's own report are not BP's at all. The estimates have been compiled using "a variety of primary official sources, third-party data from the Opec Secretariat", and a few other places completely removed from BP's headquarters in St James's Square with all its accumulated research and knowledge. Think how many libraries of understanding BP must have gathered in over a century of aggressive oil exploration and production all over the world. And yet all they offer us as a guide to our own understanding of how much "proved" oil reserves there are left on the planet is a compilation of other people's data. And much of that itself is secondhand.

After this revelation comes another. The small print continues: "The reserves figures shown do not necessarily meet the United States Securities and Exchange Commission definitions and guidelines for determining proved reserves, nor necessarily represent BP's view of proved reserves by country."

They don't even believe the figures they are publishing! Referee! This is a publication used as an energy bible by researchers the world over. Students quote it as whole truth in undergraduate essays. Journalists quote it as gospel in legions of articles. They don't insert caveats like this. Neither have they seen such caveats in earlier reports.

You might end up with a few questions for the authors of the BP Review at this point. But then, at the end of the document, we read the following: "BP regrets it is unable to deal with enquiries about the data in the Statistical Review of World Energy."

So what is BP's real view of "proved" reserves? Could it go something like this?

Looking closer at the chart and zooming in, you'll see that the figures show that global reserves of oil went up particularly quickly between 1985 and 1990 (a big black oily arrow indicates the point). There must have been some big new oilfields discovered then, right? Wrong. The actual new discoveries in that period were less than 10 billion barrels. But the Middle East nations hiked their "proved" reserves from already discovered oilfields by fully 300 billion barrels collectively in that period, professing one after another that their national calculations had all somehow hitherto been too conservative. Three hundred billion barrels is a lot of oil. It is more than a decade of demand at current levels.

Here's how it happened. In the 1950s, the nations with oil organised themselves into the cartel known as Opec. Opec's main aim was and is to try and control the price of oil. They don't want it too low. That would cut their income. Neither do they want it too high. That might get the addicts thinking of maybe going elsewhere. They want it just right, perhaps around $30 per barrel in today's money. To do this they can't produce too much, because that would flood the market, causing the price to drop. They have to produce exactly the right amount collectively, and that means quotas. After much bickering in the early days, the Opec oil ministers decided in 1982 to allocate a quota to each country in the cartel according to the size of its reserves.

But in 1985, they began to - how shall I put it? - massage the data. Kuwait was the first to give in to temptation. They found that their reserves had gone up overnight from 64 to 90 billion barrels. In 1988, Abu Dhabi, Dubai, Iran and Iraq all played the same card. Abu Dhabi had been so needlessly conservative that their reserves went up from 31 to 92 billion barrels. They surely must have employed some incompetent geologists. How could they have overlooked 60 billion barrels? Finally, in 1990, Saudi Arabia decided it too had been conservative, hiking its total from 170 to 258 billion barrels.

You can also see in BP's data that the Middle East's reserves have been almost constant in size since then. What you don't see in the figure - but do see in the data - is that this is apparently the case not just for the sum of the reserves of the Middle Eastern oil producers but also for the figures of reserves for the individual nations.

Consider the enormity of this coincidence. It means that the billions of barrels found in new discoveries each year would have to match exactly the billions of barrels produced each year in each of the Middle Eastern OPEC nations, and do so consistently every year for more than a decade.

BP's Statistical Review of Everyone's World Energy Statistics Except Their Own invites us to believe all this without comment from them or recourse to questions by us. We are left to look at the total figure they cite for "proved" reserves, 1.1 trillion barrels, and think to ourselves ... "Er, really?"

The early toppers have a different view. Being in most cases old hands from the oil industry, they know a thing or two about the games that go on in their industry. They estimate the total of proved reserves to be 780 billion barrels, some 300 billion barrels short of "BP's" figures. This is less than the world has produced since the first oil was struck over a century ago: 920 billion barrels by the end of 2003 (a figure about which there is somewhat less controversy).

Let us take some opinions that ought to be difficult to discount, one from the top of the oil tree in the US and two from the Middle East. The Houston-based energy investment banker Matthew Simmons has been one of George W Bush's energy advisers. He has studied reports by Saudi engineers showing that pressure is dropping in Saudi oilfields. The four biggest fields (Ghawar, Safaniyah, Hanifa, and Khafji) are all more than 50 years old, having produced almost all Saudi oil in the past half-century. These days, Simmons says, they have to be kept flowing largely by injection of water. This is of explosive significance, he argues. "We could be on the verge of seeing a collapse of 30 or 40 per cent of their production in the imminent future. And imminent means some time in the next three to five years - but it could even be tomorrow."

The Saudis dismiss this, claiming that they have slightly more than the 258 billion barrels of "proved" reserves they claimed they had in 1970, with lots more yet to be found, and that they can lift the current extraction rate of around 9.5 million barrels a day to more than 10 with little difficulty. As Nansen Saleri, Manager of Reservoir Management at Saudi Aramco, puts it: "... we have lots of oil, not only for our grandchildren but for the grandchildren of our grandchildren."

Saudi Aramco has the largest reserves of all the oil companies in the world: 20 times the size of ExxonMobil's, if they indeed have 260 billion barrels. They also have the lowest discovery and development costs, some 50 cents per barrel, or 10 per cent of what the private companies pay in Russia or the Gulf of Mexico. And, being state-run, without much need for debt, they are under no pressure to divulge much to the financial markets.

Lately, in the face of concerns about their ability to ramp up production, they have been marginally more open. They say they can maintain spare capacity of 1.5 to 2 million barrels per day and would be content with a fair price of $32-$34 a barrel. Aramco's geologists have insisted they can hike output to 15 million barrels a day (adding more than 5 million to the 9.5 million reported today); 5 million of which come from the giant Ghawar field alone. Contractors report that drilling activity is increasing, as it needs to, given the age of the fields.

But consider what A M Samsam Bakhtiari of the National Iranian Oil Company (NIOC) has told the Oil & Gas Journal about the existing-reserves question: "I know from experience how 'reserves' are estimated in major Middle Eastern and Opec countries, and the methods used are usually far from scientific, as the basic knowledge for such a complex exercise is not to hand." Bakhtiari is withering about Saudi Arabia's reserves hike of 90 billion barrels in 1990. But he is not too keen on his own national figures either. The BP Statistical Review cited 92 billion barrels of "proved" oil reserves at the end of 1993, but Bakhtiari preferred the estimate of a retired NIOC expert, Dr Ali Muhammed Saidi, who could add the proved reserves up to only 37 billion barrels.

Dr Mamdouh Salameh, a consultant on oil to the World Bank, agrees there is a 300-billion-barrel exaggeration in Opec's reserves. More recently, a former director of Aramco has said that Saudi Arabia's proved developed reserves stand at 130 billion barrels. An anonymous informer talking to Dr Colin Campbell of the Association for the Study of Peak Oil goes further. His conclusion is that Saudi Arabia would have gone over its peak of production in the last quarter of 2004. This person speaks with front-line inside knowledge. "Saudi has at various times put 19 fields into production," he says. "Of these, eight are 'stars', being highly productive fields that produce around 90 per cent of the country's production. All the others are 'dogs' that have never worked well and probably never will. Recovery rates of up to 50 per cent may be appropriate for the 'stars'. For the 'dogs', 10, 15 or 20 per cent would be more appropriate. Make this adjustment and Saudi has depleted more than 50 per cent of its realistically recoverable reserves."

In February 2005, Matthew Simmons speculated that the Saudis may have damaged their giant oilfields by over-producing them in the past: a geological phenomenon known as "rate sensitivity". In oilfields where the oil is pumped too hard, the structure of the oil reservoir can be impaired. In bad cases, most of a field's oil can be left stranded below ground, essentially unextractable. "If Saudi Arabia has damaged its fields, accidentally or not," Simmons said, "then we may already have passed peak oil."

Is there any chance that the early topping point of oil production is somehow wrong, all just a bad dream? I am sorry to say that I think not. It is important to realise that the early toppers are not advocates or agitators by choice. They tend to have high residual affection for the industry they have spent their lives in. Colin Campbell, for example, the founder of the Association for the Study of Peak Oil (ASPO), worked for 40 years in the oil industry before retiring to western Ireland. Chris Skrebowski, the editor of Petroleum Review, a leading trade journal of the oil industry, spent nearly a decade arguing against Campbell before conceding that he was right. "In 1995 it all seemed pretty fantastic," says Skrebowski. "I tried hard to prove him wrong. I have failed for nine years. I am now with him. In fact, I think he's a bit of an optimist." Other early-toppers include Richard Hardman, former chief executive of Amerada Hess; Roger Bentley, formerly of Imperial Oil in Canada; and Roger Booth, who spent his professional life at Shell, and who now believes that, when the peak does hit: "A crash of 1929 proportions is not improbable."

Chris Skrebowski believes that, from as early as 2007, the volumes of new oil production are likely to fall short of the combined need to replace lost capacity from depleting older fields and to satisfy continued growth in demand. In fact, given the time frames with which offshore oilfields are developed and depleted, it seems certain that there will be nowhere near enough oil to meet the combined forces of depletion and demand between 2008 and 2012. If there were, it would be from projects we would know about today (oil companies liking as they do to boast to their shareholders about every sizeable discovery). Given the inevitable time-lag from discovery to production, there is now no way to plug that gap.

There is worse: people in the oil industry must know this. They should be alerting governments and consumers to the inevitability of an energy crunch, and they aren't.

In July 2004, Campbell and Skrebowski tried to carry their warning jointly to the UK parliament. In the Thatcher Room they delivered a seminar to a pitifully thin audience, including only three MPs and a handful of researchers. I sat there listening to it with as surreal a feeling as I have ever experienced in all my years working on energy. Over the course of a decade at and around the climate negotiations, I have rarely been able to claim that the global warming problem is not reaching the ears it needs to. The same can manifestly not be said about the oil-depletion problem. This is the starting point for any analysis of how serious the problem is. How can evidence so compelling go almost unheard in one of the world's centres of government, even with a suspiciously high oil price at the time and so much obvious oil-related trouble brewing in the Middle East?

Having built their cases, the two spelt out the consequences of the early topping point. "The perception of looming decline may be worse than the decline itself," Campbell said. "There will be panic. The market overreacts to even small imbalances. Prices are set to soar in the absence of spare capacity until demand is cut by recessions. We will enter a volatile epoch of price shocks and recessions in increasingly vicious circles. A stock-market crash is inevitable."

"If the economic recovery continues," Skrebowski added, "supply will get very tight from 2008 or 2009. Prices will soar. There is very little time and lots of heads are in the sand."

In 1956, a Shell geologist called M King Hubbert famously calculated that oil production in the "lower 48" states of America would peak in 1971. Almost nobody believed him. Shell censored the written version of Hubbert's address to the American Petroleum Institute, changing the wording of his conclusion to read that "the culmination should occur within the next few decades". The US Geological Survey, in particular, did everything it could to hike the estimates of ultimately recoverable American oil to a level that would make the problem go away. The US had 590 billion barrels of recoverable oil, the survey said, in 1961, meaning that the industry had 30 years of growth to look forward to.

The years went by and the "lower 48" did indeed hit their topping point. It came a year ahead of estimate, in 1970, at 3.5 billion barrels. Since then, production has sunk down the second half of the curve at a steady rate. Many billions of dollars have been spent on ever more sophisticated exploration, including in areas where nobody imagined oil would be found at the peak of discovery in the 1930s, such as the deep water in the Gulf of Mexico. A frenzy of new domestic exploration began after the first Arab embargo in 1973 and the realisation that domestic production could be ramped up no more. Every enhanced production technique invented has been tried and tested in American oilfields. But it has all made no difference to the remarkable symmetry of the up-and-down curve that expressed Hubbert's thinking. The US is just short of halfway down the second half of the curve now. In other words, it has used up some three-quarters of its original endowment of recoverable oil. Given its almost total lack of attention to the efficiency with which oil is burned, the US becomes more dependent on foreign oil imports by the day.

The US Secretary of the Interior at the time, Stewart Udall, later apologised for having helped lull Americans into a "dangerous overconfidence" by accepting the advice of the US Geological Survey so unquestioningly. A long-serving US Geological Survey director who had led the campaign against Hubbert, V E McKelvey, was forced to resign in 1977.

We need to remember this sequence of events, and the windows it gives us into individual and collective behaviour, when we come to consider the global oil topping point.

The American pattern of historical oil discovery and production is only a loose guide to what is going on in the rest of the world. In the US, oil, once found, was pumped without much substantive effort at constraint. The curves for discovery and production are going to look different where conservative nationalised companies are doing the looking, or where - as in the case of Saudi Arabia - there has been so much oil that the taps can be turned up and down for long periods so as to moderate supply and thus influence price. Countries that have onshore and offshore oil can have two curves, because the technology for offshore oil exploitation was developed much later than that for onshore. Curves will also be disrupted by wars, big political events, even accidents. None the less, country after country follows a crude bell curve - like Hubbert's curve - in both discovery and production. Today, more than 60 out of the 65 countries possessing oil have passed their discovery topping points and 49 of them have passed their production topping points. The US has a particularly long gap between the two: 40 years (1930 to 1970). The UK has one of the shortest: 25 years (1974 to 1999). This is because the first discoveries were made much later in the UK, when technology for both exploration and production were more advanced. Growing supplies of British oil didn't last long, though. Britain is now a net oil importer just like the US.

Nor is there any comfort to be derived from gas. Gasfields deplete very differently from oilfields, gas being much more mobile than oil. It is normal for a gasfield to yield 70-80 per cent of its gas over its production lifetime, whereas an oilfield will typically yield only 35-40 per cent of its oil. Drillers normally set gas production far below the natural production capacity so as to give a long production plateau. But the danger in this is that the end of the production plateau comes abruptly, and without market signals.

Colin Campbell, a prominent early topper, estimates that the original global endowment of conventional gas was around 10,000 trillion cubic feet (equivalent to 1.8 trillion barrels of oil), of which about a quarter has been produced to date. He expects a global plateau in production of around 130 trillion cubic feet per year during the period 2015 to 2040, with production falling over a cliff beyond that. Jean Laherrère forecasts 12,000 trillion cubic feet for all gas including unconventional sources (2 trillion barrels of oil equivalent). He puts the peak of gas depletion in 2030, at 130 trillion cubic feet per year. But the exact figures need not concern us. What matters is that gas has all the same problems of dependence on overseas supplies as oil, and more besides.

Meanwhile, the five essential facts about global oil discovery can be summarised as follows.

1. The biggest oilfields in the world were discovered more than half a century ago, either side of the Second World War.

The big discoveries on the Arabian Peninsula opened with the discovery of the Greater Burgan field in Kuwait in 1938. At that time, it supposedly held 87 billion barrels. The slightly bigger Saudi Arabian Ghawar field, supposedly holding 87.5 billion barrels before extraction started, followed in 1948. These fields, the two biggest in the world, are so big that they dominate the global figures in their years of discovery.

2. The peak of oil discovery was as long ago as 1965.

How many people appreciate this? I invite you to do a bit of personal market research. Line up ten of your better-educated friends. Preface your question to them with a few reminders about how many millions of dollars the oil companies make in daily profit, tell them, if you can, an anecdote or two about the technical wizardry they use, and ask them to imagine how many billions of dollars they must have spent on exploration over the years - both of the companies' own money and of the massive tax-deduction subsidies available to them. Then ask: in what year would you guess the most oil was ever discovered?

3. There were a few more big discovery years in the 1970s, but there have been none since then.

The biggest irregularity on the downside of the global discovery curve involved the discovery of oil in Alaska's giant Prudhoe Bay field, and the North Sea, in the late 1970s. I was a geology student then. I remember the thrill as the giant fields were discovered one after the other. They all had such serious-sounding names. Forties, Brent, Piper. I look back on those days now and I see something of the primeval attractions of the hunt in it. As a junior trainee hunter, I used to listen to the tales of the senior hunters, and how they had found their quarry, quite atremble with admiration. However, what I and the other hunters didn't know was that the days of giant discoveries were more or less over.

4. The last year in which we discovered more oil than we consumed was a quarter of a century ago.

Since then, despite all those generations of eager brainwashed geology students, we have been burning progressively more, and finding progressively less. This is another one to try out on the 10 educated friends.

5. Since then there has been an overall decline.

A small rise in discoveries in the 1990s that must have looked promising at the time has dropped in the opening years of the new century. Does this sound like a world without a looming oil depletion problem, as portrayed by BP's CEO Lord Browne - who in March last year insisted "There is no physical shortage. The resources are there"? Are people are being lulled into a sense of false security about oil supply based on his speeches, and publications like the BP Statistical Review of World Energy? Or are we simply failing to pay sufficient attention to alarm signals such as last month's little-noticed announcement by the US government's Energy Information Administration, in which forecasts of Opec production between now and 2025 were slashed by 11 million barrels a day?

Let us suppose for a moment that the late toppers are correct. The topping point, as defined by reserves available in principle, is off in the 2020s or 2030s, and we can look forward to growing supplies of relatively cheap oil for a decade or more. There is another aspect of the problem: whether or not the production capacity is sufficient.

Oil-industry analyst Michael Smith, who took his PhD in geology just after me - sitting in the same chair as I did in the research lab - is an expert in this subject. He has spent most of his vocational life as an oil-industry geologist working around the world, particularly in the Middle East. "Reserves are largely irrelevant to the peak," he says. "Production capacity is the important thing - how quickly you can get it out. It is an engineering problem, not a geological problem."

Of the 11 countries in the Middle East, only five are significant oil producers: Iran, Iraq, Kuwait, Saudi Arabia and the United Arab Emirates, known sometimes as the Middle East Five. They produce around 20 million barrels a day today, a quarter of the global total. If global demand rises at the average rate of the past 30 years, 1.5 per cent per year, these five countries will have to meet around two-thirds of the demand, Smith calculates.

Let us assume they can do what they say they can, no more, no less. Where does that leave us? Saudi Arabia says it can lift production from 9.5 million barrels per day today to 12 million by 2016 and 15 million beyond that. This despite 50 per cent of the oil coming from the Ghawar field, where a water cut is already reported. Smith sums all the reported capacities in the Middle East Five and finds that if the rate of demand growth continues at 1.5 per cent they will fail to meet global demand by as soon as 2011. If it rises to 2.5 per cent the demand gap appears in 2008. If it is 3.5 per cent - the rates in China and the US of late - the gap is already here.

"What's more," Smith adds, referring back wryly to the starting assumption, "I do not truly believe the claims of the Middle East Five. In fact, although I don't believe Saudi and Iranian claims in particular, I think their politicians do believe them. I don't think there is a conspiracy, more a division of labour such that no one knows the whole story, each part of which has wide error bars. The summed result is inevitably the most positive conclusion which goes to the politicians. I've seen this in all the oil companies I have worked for." At the November 2004 conference on oil depletion at the Energy Institute, Michael Smith showed a slide at the end of his presentation that gave a pictorial summary of his views. It showed a group of firemen posing for the camera outside a burning house.

The investment bank Goldman Sachs drew attention to the problem of access to oil on a global scale in a much-quoted 2004 report. "The industry is not running out of oil - reserves are large and continue to grow," it asserts - though failing to offer evidence of this analysis. "What the industry is running out of is the ability to access this oil." Two decades of chronic underinvestment in the 1980s and 1990s are responsible. During this time the industry was feasting on reserves discovered in the 1960s and earlier with infrastructure capitalised in the 1970s, after the first oil shock. Global oil demand is now closing fast on tanker capacity and refining capacity. The peak year for tanker capacity was way back in 1981. So, too, was the peak for refinery capacity. Global rig counts also peaked that year.

So, how much new investment is needed to fix the shortfall? Over the next 10 years, assuming oil demand increases as commonly projected, fully $2.4trillion will need to be spent, according to Goldman Sachs. This is nearly triple the level of capital investment by the oil industry in the 1990s. And if it isn't spent? "If the core infrastructure does not improve, energy crises are likely to become progressively more frequent, more severe and more disruptive of economic activity," the investment bank concludes.

Stated simply, it seems that even if an early topping point doesn't hit us, the results of two decades of negligence in investment in infrastructure and exploration will. You need to read between the lines of the Goldman Sachs report to smell the level of anguish about this. Even where substantial money has been invested, a further list of serious unresolved problems can often be quickly summoned up. Oil in the Caspian is central to every scenario that envisages oil supply meeting demand off into the 2020s. The oil industry has long regarded the Baku-Ceyhan pipeline from Azerbaijan to Turkey as essential if it is to get Caspian oil out to market without the need to go through Chechnya and Russia. By the time this pipeline begins to shift oil as planned in 2005, it will have cost $4bn, almost three-quarters of that in the form of bank loans. The problems for this pipeline begin with reports of its construction standard. Four whistleblowers recently told a UK national newspaper that the pipeline was failing all international construction standards, including installation of inadequately welded pipe before it had even been inspected. It passes through a major earthquake zone. Turkey has had 17 major shocks in the past 80 years, and the pipeline is supposed to last for 40 years.

At the time the pipeline was conceived, industry reports talked of several hundreds of billions of barrels in the Caspian region. Now estimates of around 50 billion barrels, about the same as the North Sea, are more common. After the discovery of the last of the super-giants, the Kashagan field in 1990, there was a burst of predictable interest in Kazakhstan. But now, in terrain where individual wells cost $1bn to drill, in conditions where only foreign companies have the know-how and technology to drill, the Kazakh government has introduced new legislation that makes investment unattractive. As an ExxonMobil executive told Petroleum Review, "...the jury is still out on whether all these obstacles will delay Kazakhstan's production".

This example of a real-world current problem for the oil industry raises the subject of the interplay between the early topping point and oil geopolitics. As the world's No 1 consumer, the United States will have much to say about how the crisis - whether of early depletion or inadequate infrastructure and investment, or both - plays out. The geopolitics of American oil dependency is well summarised by Michael Klare in his recent Blood and Oil. He sees four key trends in US energy behaviour: more imports, increasingly unstable and unfriendly suppliers, escalating risk of anti-American violence and rising competition for diminishing supplies. Imports we have talked about above. Increasingly unfriendly suppliers and escalating anti-American violence are linked.

The point here is that the US can have relationships with governments in unstable countries if it chooses the path of oil dependency, but not easily with their populations. Terrorism can be expected to grow with every American act interpretable as imperialistic in the Middle East and Central Asia. The Iraq-to-Turkey pipeline illustrates the problem perfectly. It suffered near daily attacks in 2003.

As for competition over diminishing supplies, therein lies the stuff of nightmares. The Pentagon established a Central Command in 1983, one of five unified commands around the world, with the clear task of protecting the global flow of petroleum. "Slowly but surely," Michael Klare concludes, "the US military is being converted into a global oil-protection service."

At $30 a barrel, the total bill for imported oil - now more than half the US daily consumption and rising fast - should reach $3.5 trillion over the next 25 years, and this does not include the Pentagon's overhead. Beyond the Middle East Five, the Bush strategy of supplier diversification will look to eight main sources, which Klare calls the Alternative Eight: Mexico, Venezuela, Colombia, Russia, Azerbaijan, Kazakhstan, Nigeria and Angola. These countries and their oil operations are characterised by one or more of the following attributes: corruption, organised crime, civil war, political turmoil short of civil war, and ruthless dictators. The US military is being forced into deeper relationships with such regimes, including joint military exercises.

The bottom line for Klare is this. "Any eruption of ethnic or political violence in these areas could do more than entrap our forces there. It could lead to a deadly confrontation between the world's military powers." Because obviously, in a world as enduringly addicted to oil as ours is, others are going to be looking for their own supplies. Russia and China will be among them. As one global-security analyst recently put it: "I am afraid that over the years we will see China become more involved in Middle East politics. And they will want to have access to oil by cutting deals with corrupt dictatorships in the region, and perhaps providing components of weapons of mass destruction, ballistic missiles and other things they have been involved with, and that could definitely put them on a collision course with the United States." Oil dependency could yet prove to be the route to a Third World War. The stress associated with an unforeseen early topping point surely makes that horrific prospect more, not less, likely.

Humans are good at staying loyal to their theocracies, and a hundred years of fossil fuel addiction has created impressive theocracies. However, as Einstein said, you can't solve the world's problems with the same thinking that created them. We have to think outside the box. That means giving renewable energy, alternative fuels, energy efficiency and storage technologies the space they need to grow explosively.

The good news is that it will be possible to replace oil, gas and coal completely with a plentiful supply of renewable energy, and faster than most people think. Shell employs roomfuls of clever people just to think about the future. They are called scenario planners. In their 2001 book of scenarios, Shell's planners mention that renewable energy holds the potential to power a future world populated with 10 billion people, and do so with ease. The needs of the 10 billion can be met even in the unlikely and undesirable event that all of them use energy at levels well above the average per-capita consumption today in the EU. The Shell futurists mention this almost in passing, in the caption of a diagram showing the continent-by-continent potential for individual renewable-energy technologies to contribute to such a power-rich future. Working for an oil and gas giant as they do, it is perhaps no surprise that they fail to explore a scenario wherein something resembling this renewable-power-rich future comes to pass. Others are not so constrained.

When I began my time in Greenpeace, in 1989, the protestations my colleagues and I made that renewable energy could displace fossil fuels and run the world were ridiculed by energy experts and officialdom as naïve wishful thinking. Now, more than a decade later, such views can be found in the heart of government, at least in Europe. The Blair Government published a report in 2003 that concluded: "It would be technologically and economically feasible to move to a low carbon-emissions path, and achieve a virtually zero-carbon-energy system in the long term, if we used energy more efficiently and developed and used low-carbon technologies."

Among the low-carbon technologies on offer, the government report placed heavy emphasis on renewable energy and hydrogen, rather than nuclear power. Of solar energy, the report concludes: "[It] alone could meet world energy demand by using less than 1 per cent of land currently used for agriculture." Tony Blair used these same words in the speech he gave launching the UK Energy White Paper. I sat there watching him do it, 10 feet away in the front row. I was momentarily tempted to leap to my feet and shout: "So why don't you invest in it like the Germans and Japanese, then?" But he hasn't. Not then. Not now.

Microcosms of what could be done can be found already on the local government scene. Take the small town of Woking. Its borough council has cut carbon-dioxide emissions by fully 77 per cent - yes, more than three quarters - since 1990 using a hybrid-energy system involving small private electricity grids, combined heat and power (CHP), solar photovoltaics (PV), and energy efficiency. Woking has turned its town centre, its housing estates, and its old people's homes into inspirational islands of energy self-sufficiency. The UK grid could go down for ever, and these folks would have their own heating and electricity year-round. The technologies work in perfect harmony. The CHP units generate heating when needed in winter, and lots of electricity along with it when the PV is not working at its best. The PV generates plenty of electricity in the summer, when the heating isn't needed, meaning the CHP can't generate much electricity. Because the use of private wires is so much cheaper than using the national grid, the whole package costs fractionally less than the equivalent heating and electricity supply would cost from the big energy suppliers.

Compare such out-of-the-box ingenuity with what nuclear has to offer. Even if there were no environmental problems associated with it, and we could afford the billions needed in perpetuity from the public purse to make the voodoo economics stack up, a new fleet of stations couldn't come on-stream in the UK much before 2020. And if we and the Americans can't solve the energy crisis without resorting to nuclear, the whole world will follow our example. Bad as the terrorist threat is now, it would be compounded many times as a result. We would live with much increased risk of losing whole cities to suitcase bombers.

There is a part of me that looks at the prospect of a cold snap in Britain this winter, and of a consequent fuel-supply crisis, and thinks "Bring it on." Maybe this is what we need to stop our sleepwalk towards catastrophe, and to make us rethink our energy policy. Perhaps the government can be judo-thrown into the Wokingisation of Britain now, and dissuaded from the nuclearisation of Britain 15 years from now.

But then I think of all the grans and granddads that would die in a one-in-ten winter, and I just feel sad. Sad, and mad with our hot-air Government.

Adapted from "Half Gone: Oil, Gas, Hot Air and the Global Energy Crisis", by Jeremy Leggett (Portobello Books, £12.99). To order a copy for the special price of £11.99 (inc P&P), call Independent Books Direct on 08700 798 8897