In this episode Joe Goffman, our Executive Director, talks with Kathy Fallon Lambert, Senior Advisor with The Center for Climate, Health, and the Global Environment at the Harvard T.H. Chan School of Public Health and Co-founder of the Science Policy Exchange. Kathy was part of a team of researchers who evaluated the Regulatory Impact Analysis for EPA’s Affordable Clean Energy rule, to determine whether it incorporates the best available information and whether its predictions are fully supportable. She and her colleagues also performed their own analysis using EPA data. Using more realistic assumptions than EPA used they found that EPA overstated the likely benefits of ACE and that ACE could lead to increased pollution in several states.

Kathy and Joe discuss EPA’s assumptions in the RIA, the impact of EPA’s current and expected changes to New Source Review that EPA failed to account for, and EPA’s inconsistency in calculating the benefits of reducing fine particle concentrations.

Read the study here https://www.hsph.harvard.edu/c-change/news/carbon-standards-re-examined/

Transcript available here https://eelp.law.harvard.edu/wp-content/uploads/2025/05/CleanLaw-27-Joe-Kathy-ACE-MATS.pdf