How Much Power Does a Data Center Use?
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The average data center has a Power Usage Effectiveness (PUE) of about 1.56 (Uptime Institute, 2024), meaning it draws 1.56 watts of total facility power for every 1 watt delivered to IT equipment. Efficient hyperscale operators do far better — Google reports 1.09 and Microsoft 1.17 fleet-wide.
1.56 avg
Global average PUE across 526 facilities surveyed
Source: Uptime Institute Global Data Center Survey — 2024
1.54 avg
Global average PUE, 2025 survey (681 facilities) — improving trend
Source: Uptime Institute Global Data Center Survey — 2025
1.09 PUE
Google's global fleet-wide average annual PUE
Source: Google Data Centers — Efficiency — 2024
1.17 PUE
Microsoft's global fleet-wide PUE, fiscal year 2025
Source: Microsoft Datacenter Sustainability — FY25
Tracked capacity on Data Center List
Across the 44 facilities with disclosed capacity data on Data Center List (of 6,043 tracked across 173 countries), disclosed IT capacity totals 12.01 GW, with a further 7.23 GW AI-estimated across 842 additional facilities. At the industry-average 1.56 PUE, that disclosed capacity implies roughly 18.73 GW of total facility power draw. 6,020 facilities are currently active, with 23 more planned or under construction.
Why power use varies so much between facilities
PUE is driven mainly by cooling design and climate. Free-air and evaporative economization in temperate climates cuts mechanical cooling load dramatically compared to compressor-based cooling in hot, humid regions. Scale matters too — large hyperscale campuses can invest in custom power distribution and cooling that a smaller colocation facility can't justify, which is part of why the Uptime Institute's simple average (1.56) runs higher than capacity-weighted figures for large (20 MW+) facilities, which the same survey data puts closer to 1.44–1.48.
How we estimate capacity when it isn't disclosed
Most facilities never publicly disclose IT capacity. When we don't have a real figure, we model one from published industry research — power-density benchmarks for data center building footprints and PUE studies like the ones cited above — calibrated to each facility's verified attributes (building footprint, operator, region). Estimates carry an AI est. badge and are always shown separately from disclosed figures, never blended into one headline number.
Frequently Asked Questions
What is PUE (Power Usage Effectiveness)?
PUE is the ratio of total facility power draw to IT equipment power draw. A PUE of 1.0 would mean zero overhead — every watt goes to computing. The industry average is 1.56 (Uptime Institute 2024 Global Data Center Survey), while efficient hyperscale campuses run closer to 1.1.
How much electricity does a typical data center use?
It scales directly with IT (critical-load) capacity: a facility with 10 MW of IT capacity and a PUE of 1.56 draws about 15.6 MW of total facility power. Large hyperscale campuses can exceed several hundred MW of IT capacity.
Why do hyperscalers report lower PUE than the industry average?
Google and Microsoft report fleet-wide PUEs of 1.09 and 1.17 respectively because they operate at massive scale with custom-designed cooling, free-air/evaporative economization, and continuous optimization — advantages a typical smaller colocation facility doesn't have. The Uptime Institute's 1.56 figure is a simple average across all reporting facility sizes, not capacity-weighted.
Is data center power use measured or estimated on Data Center List?
We separate disclosed (publicly reported, e.g. via permits, PeeringDB, or press releases) capacity from AI-estimated capacity, and never blend them into one number. Estimated figures are flagged with an 'AI est.' badge and are modeled from published industry research, replaced by real figures whenever a facility discloses one.
Is PUE trending up or down industry-wide?
Down, slowly. The Uptime Institute's Global Data Center Survey showed average PUE improve from 1.56 in 2024 to 1.54 in 2025 (n=681), continuing a long-run efficiency trend driven by better cooling design, though gains have flattened since the early-2010s as easy wins were captured.
Related Questions
How much water does a data center use?
WUE by cooling type, our tracked disclosed totals, and the public research behind the numbers.
How loud is a data center?
dBA at the source, distance attenuation, and the county/EPA noise standards that regulate it.
How many jobs does a data center create?
Construction vs. operations headcount per MW, sourced to Mangum/NVTC and Brookings.