California's SB 253 requires companies with over $1B in global revenue doing business in California to disclose Scope 1 and 2 greenhouse-gas emissions, with the first-year filing due August 10, 2026. SB 261 (climate financial-risk reports) covers firms over $500M in revenue but is currently enjoined by the Ninth Circuit, making that filing voluntary for now.
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California's SB 253 climate emissions reports come due for large firms
Why this matters for founders
Startups selling into large California enterprises should expect emissions-data requests flowing down the supply chain, even if their own revenue is below the thresholds.
Source: Greenberg Traurig
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