Click here to download an Excel database on political contributions from energy companies.

Since 1999, the combined political contributions from energy companies Ameren, Commonwealth Edison, Dominion, Dynegy, Edison International, Exelon, Midwest Generation, and NRG Energy totaled more than $6 million. The highest amounts were donated to some of the companies’ political action committees, but several lawmakers received at least $200,000.

Note: Includes contributions made between Jan. 1, 1999, and June 30, 2008. Exelon is the parent company of Commonwealth Edison. Figures for “Exelon/Commonwealth Edison” include all contributions listed for either company. Edison International is the parent company of Midwest Generation. Figures for “Edison International/Midwest Generation” include all contributions listed for either company with the exception of 78 contributions listed for “Dynegy Midwest Generation Employees.” Those contributions are listed in this table under “Dynegy/Midwest Generation.”

Source: Illinois State Board of Elections, analyzed by The Chicago Reporter.

Alden is the senior editor of WBEZ's race, class and communities desk. Previously, he served as the director of research and evaluation for the Metropolitan Planning Council, investigator and later as...