What does California's SB 253 require, and when is the deadline?

California's SB 253 requires any company with more than one billion dollars in annual revenue to file its Scope 1 and Scope 2 emissions, or file a statement that it is not reporting. The first filing deadline is Tuesday, 10 November 2026.

Why does the Scope 2 emissions requirement in SB 253 matter for AI companies?

Scope 2 covers electricity a company buys, including power used by a data hall it runs itself; compute rented from cloud providers falls under Scope 3 instead. SB 253 therefore forces large companies to put a measured power number for their own AI compute into a signed public filing, the kind of number few firms can produce for AI spending.

Which companies report earnings this week during the AI stock selloff, and what is the key question on their calls?

Meta, Lam Research and Texas Instruments report quarterly results this week, after AI-related shares have sold off for eight straight trading sessions. The central question on their earnings calls is what the capital expenditure already spent on AI actually returned for the business.

California SB 253 Emissions Deadline Nov 10

Week Ahead · Ins7ghts Daily, Sunday 18 October 2026

Three things are already dated, and the nearest one lands before this week is out.

This week. Meta, Lam Research and Texas Instruments report results into a market that has sold AI shares for eight sessions straight. The question on the calls is what the previous capex returned.
Tuesday 10 November. California's first reporting deadline under SB 253 falls that day. Companies above $1 billion in revenue file their Scope 1 and Scope 2 emissions, or file a statement saying they are not reporting.
Ours, open until the end of Q1 2027. At least one enterprise AI deal gets publicly repriced or delayed over an exportable-log clause rather than over model quality. That one is on our Scoreboard, flagged as our call, not a fact.

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