Instructions
Go to the U.S. Environmental Protection Agency conversion page at epa.gov/lmop/projects-candidates/interactive.html
Type in the number of standard cubic feet per minute of gas in the first blank on the page. This will result in a decimal number. For example, if you input 5,000 scfm, you would get 7.2 MWh.
Multiply the resulting number by 1,000 to get the KWh result. Following the same example, 1000 x 7.2 = 7,200 KWh.