Sustainability & Efficiency

PUE rewards moving losses inside the IT boundary in a liquid-cooled AI factory and ignores the water, carbon, and useful-work questions that now gate permits; which metric you optimize is itself consequential.

Coolant temperature, economizer type, and voltage class are irreversible efficiency decisions — bank them at scoping or pay in megawatts every hour; the leverage now sits in setpoints and the power chain.

Choose your matching granularity — annual RECs or 24/7 hourly CFE — before contracting power; procurement, clean-firm strategy, on-site generation, and scheduling all follow from that choice.

Evaporative cooling buys PUE at a permanent water-consumption line; dry heat rejection buys near-zero site water at a hot-weather energy penalty. Pick per basin, before the campus is plumbed and permitted.

Loop temperature and distance to a heat offtaker, both fixed at siting and design time, decide whether waste heat becomes a revenue line or a compliance retrofit.

Embodied carbon — concrete, silicon, copper paid before first power-on — can overtake operational emissions on a clean grid with a short refresh cycle, and the 18–36-month cycle re-pays it faster than any other industry; compute the crossover before you assert the majority.

Siting and size set which disclosure regimes bind, and each prescribes metrics — down to how Scope 2 is computed — that must be instrumented at design time.

File a firm interconnection request and wait years, or contract a bounded curtailment envelope and energize into existing headroom — a choice engineered at scoping, sized to workload interruption tolerance.