45L and 25C Energy Efficiency Tax Credits Cut Household Costs

Two federal tax credits are helping homeowners around the country save money on energy bills. They are spurring better homes and equipment and are reducing strain on the electric grid. But the credits, which were created in a bipartisan 2005 law and extended and expanded under the Inflation Reduction Act, are now under threat in Congress. These fact sheets provide new analysis on the benefits these credits deliver.

The 45L tax credit assisted with the construction of nearly 350,000 efficient new homes in 2024, a dramatic increase over earlier years. These homes cut homeowner energy bills by about $450 per year, and by 2032 they will cut peak electric demand by 1,800 MW.

The 25C tax credit helped 2.3 million American families improve their homes and reduce their monthly energy bills in 2023. Families are saving an average of $130 a year in energy costs. By 2032 we expect homeowners will use the credit to cut peak electric demand by 3,400 MW.