The New York State Department of Environmental Conservation (DEC) has finalized new regulations mandating greenhouse gas (GHG) emissions disclosure for carbon-intensive sectors, with reporting scheduled to begin in 2027, according to DEC Commissioner Amanda Lefton.
The move comes amid a rollback of federal climate transparency initiatives under the Trump administration, including actions to end the U.S. EPA’s Greenhouse Gas Reporting Program (GHGRP) and halt implementation of the SEC’s climate disclosure rules. In response, several states—most notably New York and California—have advanced their own climate reporting frameworks. New York’s regulation follows a directive issued earlier this year by Governor Kathy Hochul to establish a Mandatory Greenhouse Gas Reporting Program, aimed at identifying major emitters, informing emissions-reduction policies, assessing compliance with climate programs, and supporting the state’s emissions-reduction targets.
Under the finalized regulation, covered facilities must begin annual GHG emissions reporting to DEC in June 2027, reflecting emissions from the prior calendar year. Certain large emitters will also be required to obtain third-party verification of their emissions data through DEC-accredited verifiers.
Entities subject to the reporting requirement include New York facilities emitting 10,000 metric tons of CO₂e or more annually, such as electricity generators, stationary combustion sources, landfills, waste-to-energy facilities, natural gas compressor stations, and other infrastructure. The rules also apply to fuel suppliers (including natural gas, petroleum products, LNG, CNG, and coal), waste haulers transporting solid waste outside the state with emissions exceeding the threshold, electric power entities, agricultural lime and fertilizer suppliers, and facilities involving anaerobic digestion or liquid waste storage meeting the emissions criteria.
DEC released the draft regulations in March 2025 and received more than 3,000 public comments during the consultation process. The final rules incorporate several adjustments, including extended verification deadlines for the first two reporting years and reduced reporting obligations for facilities that have closed or ceased operations.
