The Definitive Guide toAI Data Centers
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US grid average carbon intensity, 2024 (global average ~473 gCO2/kWh) — the training/PUE calculators' grid-carbon default

~384 gCO2/kWhobserved

Value kindobserved — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range.
As of2024
SourceEmber Global Electricity Review 2025 (2024 data); down from 393 in 2023
Reviewchecking…review by 2027-05-31 · slow cadence
Recorded changesnone recorded
Claim idus-grid-carbon-intensity-2024

Where the guide uses it

Not quoted in a chapter yet; it is kept in the curated register.

← Full numbers register — every date-stamped figure in the guide, with revision history.