The Definitive Guide toAI Data Centers
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GuideGlossaryScope 1

Scope 1

Direct greenhouse-gas emissions from sources a company owns or controls, such as on-site generators.

Current numbers

10 Nov 2026California SB 253 Scope 1/2 first-report deadline (postponed from Aug 10 by CARB); SB 261 under 9th-Cir. injunctionas of 2026 · register ↗
~12xindirect (Scope 2, grid) water vs direct (Scope 1, on-site) water for US data centersas of 2023 · register ↗

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