Fossil Fuel Duration
Levels of primary energy sources are the reserves in the ground. (Flows are production.) The most important part of primary energy sources are the carbon based fossil energy sources. Oil, coal, and gas stood for 79.6% of primary energy production during 2002 (in million tones of oil equivalent (mtoe)) (34.9+23.5+21.2).
Flows (daily production) during 2006
Oil: 84 million barrels per day
Gas: 104,435[15]*0.182)= 19 million barrels oil equivalent per day {MBOED}
Coal: 10,230[16]*0.907186*4.879= 29 MBOED