Select AEO tables in Fossil Fuel Equivalency

This set of tables provides Reference case tables 1, 2,4, 5, 17,21 and 22 in fossil fuel equivalency for comparison to earlier editions of the Annual Energy Outlook.

In the Annual Energy Outlook 2025, we updated the way we calculate primary energy consumption of electricity generation from noncombustible renewable energy sources such as solar, wind, hydroelectric, and geothermal. We now calculate consumption of noncombustible renewable energy for electricity generation using the captured energy approach, which applies a constant conversion factor of 3,412 British thermal units per kilowatthour, using the heat content of electricity. This approach is a change from our old methodology, called the fossil fuel equivalency approach.

The captured energy approach is more consistent with international energy statistics standards than the fossil fuel equivalency approach.