Power Usage Effectiveness · PUE
Total facility power divided by IT power; the headline data-center efficiency ratio, lower is better.
Current numbers
~1.09Google fleet-wide trailing-12-month PUE; best sites ~1.04 (quarterly swings 1.08-1.11 with season)
~2.3 GWVoltaGrid generation for Vantage's ~1.4 GW IT load (~64% overbuild) — the PUE x redundancy x derate stack made concrete
500 kWEED Article 12 reporting threshold; PUE+WUE+ERF+REF filed annually by 15 May to the EU database