Power sector impacts of the Inflation Reduction Act of 2022

John E.T. Bistline, Maxwell Brown, Maya Domeshek, Cara Marcy, Nicholas Roy, Geoffrey Blanford, Dallas Burtraw, Jamil Farbes, Allen Fawcett, Anne Hamilton, Jesse Jenkins, Ryan Jones, Ben King, Hannah Kolus, John Larsen, Amanda Levin, Megan Mahajan, Erin Mayfield, James McFarland, Haewon McJeonRobbie Orvis, Neha Patankar, Kevin Rennert, Sally Robson, Christopher Roney, Ethan Russell, Greg Schivley, Daniel Shawhan, Daniel Steinberg, Nadejda Victor, Shelley Wenzel, John Weyant, Ryan Wiser, Mei Yuan, Alicia Zhao

Research output: Contribution to journalArticlepeer-review


The Inflation Reduction Act (IRA) is regarded as the most prominent piece of federal climate legislation in the U.S. thus far. This paper investigates potential impacts of IRA on the power sector, which is the focus of many core IRA provisions. We summarize a multi-model comparison of IRA to identify robust findings and variation in power sector investments, emissions, and costs across 11 models of the U.S. energy system and electricity sector. Our results project that IRA incentives accelerate the deployment of low-emitting capacity, increasing average annual additions by up to 3.2 times current levels through 2035. CO2 emissions reductions from electricity generation across models range from 47%-83% below 2005 in 2030 (68% average) and 66%-87% in 2035 (78% average). Our higher clean electricity deployment and lower emissions under IRA, compared with earlier U.S. modeling, change the baseline for future policymaking and analysis. IRA helps to bring projected U.S. power sector and economy-wide emissions closer to near-term climate targets; however, no models indicate that these targets will be met with IRA alone, which suggests that additional policies, incentives, and private sector actions are needed.

Original languageEnglish (US)
Article number014013
JournalEnvironmental Research Letters
Issue number1
StatePublished - Jan 1 2024

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • General Environmental Science
  • Public Health, Environmental and Occupational Health


  • Inflation Reduction Act
  • climate policy
  • decarbonization
  • model intercomparison
  • power sector economics


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