An Electric Generating Unit (EGU) refers to facilities that generate electricity by means of burning coal, oil, gas, or other fuels. EGU's are one of the sources that are evaluated in the Environmental Protection Agency's National Emissions Inventory.
Source: Eastern Research Group Inc and E.H. Pechan & Associates Inc. 2004. Documentation for the 2002 Electric Generating Unit (EGU) National Emissions Inventory. Prepared for the Emissions Factor and Inventory Group (D205-01) Emissions, Monitoring and Analysis Division U.S. Environmental Protection Agency. Available online at: http://www.frames.gov