The Distributional Effects of U.S. Clean Energy Tax Credits

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Since 2006, US households have received more than $18 billion in federal income tax credits for weatherizing their homes, installing solar panels, buying hybrid and electric vehicles, and other "clean energy" investments. We use tax return data to examine the socioeconomic characteristics of program recipients. We find that these tax expenditures have gone predominantly to higher-income Americans. The bottom three income quintiles have received about 10 percent of all credits, while the top quintile has received about 60 percent. The most extreme is the program aimed at electric vehicles, where we find that the top income quintile has received about 90 percent of all credits. By comparing to previous work on the distributional consequences of pricing greenhouse gas emissions, we conclude that tax credits are likely to be much less attractive on distributional grounds than market mechanisms to reduce GHGs.