Annual Energy Review (AER) - long-term historical statistics all in one place
 

Thermal Conversion Factors      Thermal Conversion Factors section - PDF Format (0.1 MB)

Factors used to estimate gross (or higher or upper) heat content in British thermal units (Btu) of a given amount of energy measured in physical units, such as barrels. Includes approximate heat content of petroleum, biofuels, natural gas, coal, coal coke, and electricity. Also includes heat rates for electricity net generation.

   
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Cross reference to Monthly Energy Review Documentation - PDF Format
 
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Note: Monthly Energy Review (MER) tables show latest data available, including any revisions to annual data.