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PUE Calculator
Data Centre Power Usage Effectiveness

Calculate your data centre PUE, DCiE and efficiency rating. Benchmark against industry standards and identify overhead losses. Free tool by Potato Head Electronics.

Power Inputs
Total power drawn from the utility meter — includes IT load, cooling, lighting, UPS losses, everything.
Power consumed by servers, storage, networking equipment only — measured at PDU output or IT meter.
CRAC/CRAH units, chillers, cooling towers, aisle containment fans.
UPS inefficiency, PDU losses, transformer losses. Typically 5–10% of IT load.
Lighting, security systems, building management, staff areas.
Results
PUE Efficiency Gauge
PUE Industry Rating
1.0 — Perfect 1.2 — Excellent 1.5 — Average 1.8 — Poor 2.0+
Detailed Breakdown
Industry Benchmarks
How You Compare
Hyperscalers
PUE 1.1 – 1.2
Google, Microsoft, Meta — best in class
Tier IV Colo
PUE 1.3 – 1.5
Equinix, Digital Realty — enterprise grade
Enterprise DC
PUE 1.5 – 1.8
Typical on-premise data centre
Legacy DC
PUE 2.0+
Older facilities with poor cooling
Global Average
PUE ~1.58
Uptime Institute 2023 report
Your PUE
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Run the calculator above

📄 Download PUE Report (PDF)

Printable efficiency report for your site — ideal for management reviews, audits or CapEx justification documents.