Transparency and Honesty in Energy Regulations Act of 2025

This bill prohibits federal agencies from using estimates of climate-related damages (like the "social cost of carbon," methane, or nitrous oxide) in regulatory analyses. It bans these metrics from cost-benefit reviews required under laws or executive orders (such as Executive Order 12866), rulemaking, guidance documents, or agency actions. Agencies must report by December 2025 on how often they previously used these metrics in regulations since 2009. The law directly affects federal agencies like the EPA when developing environmental rules, requiring them to rely only on legally mandated environmental considerations.