New York Finalizes Mandatory GHG Reporting Rule: Who Must Report and What’s Due in 2026–2027

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New York Finalizes Mandatory GHG Reporting Rule: Who Must Report and What’s Due in 2026–2027

New York’s Part 253 Mandatory GHG Reporting Program is now in effect, marking a major implementation step under the Climate Act. The rule establishes statewide emissions reporting and annual verification requirements for Large Emission Sources. Learn who must report, verification thresholds, key deadlines, and what companies should do now to prepare for Part 253 compliance.

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A Step-by-Step Guide to SB 253 GHG Reporting

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A Step-by-Step Guide to SB 253 GHG Reporting

California’s Climate Corporate Data Accountability Act (SB 253) continues to evolve, and CARB’s latest proposed updates, shared during its November 18 workshop, provide clearer guidance on who must report, what data must be included, and how companies should prepare for upcoming deadlines. The detailed, easy-to-follow roadmap at the end of this article incorporates CARB’s most recent proposed changes to help companies understand their obligations, develop an actionable plan for compliance, and meet the new proposed deadline of August 10, 2026, for the first SB 253 reports.

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