World Energy Source and Use

For current and historical use of fossil, nuclear and hydroelectric energy the BP world energy data2006 (1.2Mb Excell download) takes some beating. The charts below are derived from this data.

The LHS chart shows our major primary energy consumption in 2005.
Other renewables (e.g land fill gas, wind, biofuels) are not included as they are dificult to account for. Landfill gas to electricity is the largest UK renewable source and has around a 2% impact on total CO2 generation. UK wind has around a 0.2% CO2 impact.

One can then apply factors for CO2 generated per unit of energy to give the CO2 impact.

The BP data goes back to 1965 so one can also look at trends.
The chart on the left shows the source for the increased CO2 generated from 2000 to 2005.
Coal, which generates nearly 70% more CO2 per unit of energy than gas, is the major contributer.
China accounts for 70% of the increase in CO2 from coal 2000-2005 and now consumes more than one third of world coal.
Coal is becoming increasingly attractive as oil and gas prices rise. China will continue to want to use coal as it has large local supply and limited oil and gas availability.
China, India, Australia and America all have large coal reserves and this will have been a factor in them not endorsing the Kyoto Protocol

Mapping World energy use is a challenge. The chart below uses BP data for the Sources and some broad assumptions to distribute the uses. It is at least conceptually correct. A more detailed analysis has been possible for the UK and this is shown on the Domestic Energy Consumption page.

Diagram of world energy flow
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