Greenhouse Gas Statistics and Conversions

Green Power Equivalency Calculator Methodologies
The U.S. Environmental Protection Agency provides various tools for calculating the greenhouse gas impact of passengers vehicles, coal-fired power plants, and other emissions sources at the web site Green Power Equivalency Calculator Methodologies.

Carbon dioxide factors for coal
The following study provides measurements of the amount of carbon dioxide released per Btu by various types of coal: Carbon Dioxide Emission Factors by Coal Rank and State of Origin, U.S. Energy Information Administration, 1994