As I read through the 2008 International Energy Agency (IEA) World Energy Outlook, I had the distinct impression that I was reading contributions from people with completely opposite points of view. The pessimist warned that we are facing a supply crunch and much higher prices. The optimist in the report said that oil production won't peak before 2030.

This trend held in the section on renewable energy. The optimist noted that renewable energy is expected to "expand rapidly." The pessimist noted that biofuels are predicted to only supply 5% of our road transport fuel in 2030. And so the report goes, part rampant optimism and part rampant pessimism.

I guess the good news then is that there is something in there that will appeal to everyone, regardless of your outlook. The bad news? The claims that are directly opposed to your views will have you questioning the credibility of the report. And if you are like me--and note that between last year's report and this year's report they dropped their 2030 oil demand forecast by 10 million bpd--you are left wondering whether there is any credibility at all in forecasts that far out.

In this analysis, Samuel Foucher (“Khebab”) and I (Tony Eriksen or “ace”) present an update of Wikipedia Megaprojects data. We also provide forecasts of future oil production, reflecting the Megaprojects data. The IEA uses megaprojects in its analysis and we reconcile our Megaprojects information to the data they provide in their report.

A wide variety of methods can be used to forecast future oil production. Each will provide different indications. Sam and I each make projections with megaprojects data, using somewhat different methods. Sam’s projections are shown in Figure 6. My forecasts are shown in Figures 8, 9, and 10. Despite our differing methods, the indications we produce are all substantially lower than the indications of the IEA.

Until quality data about production history, reserves and future development plans including capacities are obtained for fields in secretive OPEC countries, forecasts beyond 2012 are highly uncertain, regardless of the source. While quality data remain unavailable, the world's future energy security, in particular liquid fuels supply security, remains an extremely high risk.

This chart shows the IEA WEO 2008 forecast together with Sam's forecast derived from using Megaprojects sanctioned capacities and yet to be sanctioned capacities (including yet to find oil - YTF). By 2020, the IEA's forecast is significantly greater than Sam's forecast.

True to their word, the 2008 World Energy Outlook represents a significant development by the International Energy Agency (IEA) in the philosophy and methodology of their oil supply forecasts. The report attempts a bottom-up model of the world's oil production potential and even revises down estimates previously taken at face value from the United States Geological Survey (USGS). The tone of the report has also changed dramatically, with an urgent call for investment in additional oil projects to avoid production shortfalls by 2015.

Despite those significant changes, the report still relies on inflated estimates of reserves from OPEC countries, overplays the contribution of reserves growth due to technology and predicts the reversal of a decades long trend of declining oil discoveries. These are the real factors that will send oil production into decline, but at least now we have some numbers we can discuss and analyze instead of a decade of blind faith in oil market economics.

Given the central role Saudi Arabia will play in the world's energy future, the continued fuzziness regarding its oil prospects is cause for concern. According to the IEA 2008 World Energy Outlook, Saudi Arabia will remain the world’s largest producer through at least 2030 as its output climbs from 10.2 mb/d (million barrels per day) in 2007 to 14.4 mb/d in 2015 and 15.6 mb/d in 2030. The future totals include Natural Gas Liquids (NGL) production as well as additions from enhanced oil recovery efforts (EOR).

The 2008 WEO represents a step forward in that projections are purportedly based on a bottoms-up querying of a database containing reserves and past-production information for 800 of the world's largest oilfields, rather than just being extrapolated to what future demand will require. However, the results obtained from such a data mining effort are limited not only by the quality of the data therein, but also by the assumptions made when querying the database. A close look at the data and projections for Saudi Arabia in the WEO reveals a rather spotty effort, providing neither a clear picture of what is happening in this important region nor much confidence that the overall report for the world is accurate.