New York State will require large emitters to report their greenhouse gas (GHG) emissions starting in June 2027 for the 2026 calendar year. The rule applies to entities emitting 10,000+ metric tons of CO₂ equivalent per year, including power plants, fuel suppliers, landfills, and other industrial sources. While the program focuses on data collection rather than emission reductions, it provides regulators with a clearer picture of statewide emissions to support climate planning and policy.

Certain large sources will need third-party verification to ensure data accuracy, and an online reporting platform will simplify compliance. The initiative strengthens state-level climate leadership, filling gaps left by federal reporting changes and promoting transparency in New York’s efforts to meet its climate goals.