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Index Brief

The month in AI’s environmental footprint, scored.

One email after each edition of the index. Next edition: after October 2026.

One email a month. Unsubscribe any time.

What moved

Every score change with the disclosure or incident that caused it.

New numbers

Per-prompt figures, annual reports and model cards as they land, with the boundary explained.

Watchlist

Permits, lawsuits and grid deals before they show up in a sustainability report.

Right of reply

Company responses to the index, published unedited.

Deeper reports — procurement-grade company dossiers and a quarterly data pack — are in the works. Subscribers hear first.