Skip to main content
VerifiedFigure of record

Measured efficiency has not moved: a weighted average PUE of 1.54

The Uptime Institute Global Data Center Survey 2025 reports that respondents' annual power usage effectiveness had a weighted average of 1.54, the sixth consecutive year the headline figure has virtually stood still. The survey ran online from April to May 2025 and drew more than 800 owners and operators.

The verdict

Verified

The document exists. The ledger fetched it at its publisher and quotes it.

Key facts

What the sources say

Record ID
AIA-2026-0031
Kind
Figure of record
Jurisdiction
Global
Last verified
Added
  • The weighted average annual PUE reported by respondents in 2025 was 1.54.
  • The PUE question was answered by 681 respondents.
  • The survey was conducted online from April 2025 to May 2025 and collected responses from more than 800 data center owners and operators.
  • The report attributes the lack of movement to legacy infrastructure and region specific barriers to efficient cooling.
  • More than a quarter of respondents, 27.5 percent, work in facilities that are 16 years or older.

Figures

Every number, with who measured it and when

  1. 1.54 PUE ratio

    Weighted average annual power usage effectiveness reported in the 2025 survey

    Uptime Institute Global Data Center Survey 2025, primary source, as of .

  2. 681 respondents

    Respondents answering the annual PUE question

    Uptime Institute Global Data Center Survey 2025, primary source, as of .

What it changes

For an operator, a utility or a community

An operator claiming an industry wide efficiency improvement should reconcile it with a figure that has not moved in six years. A utility evaluating an efficiency commitment in a connection agreement now has a benchmark to test it against. A community told that new facilities are far more efficient than old ones should ask for the site's own number, because the fleet average includes a quarter of facilities over sixteen years old.

Sources

What this record was verified against

  1. Uptime Institute Global Data Center Survey 2025Primary · 30 July 2025
  2. Uptime Institute press release on the 15th annual global data center surveyPrimary · 30 July 2025

Related

Records that sit beside this one

Cite this record

Free to reuse under CC BY 4.0, with attribution. The record ID AIA-2026-0031 is permanent and is never reused.

In a sentence
According to the GAGE AI Infrastructure Atlas (as of 15 September 2026), measured efficiency has not moved: a weighted average pue of 1.54.
APA
GAGE (Global Academy of Generative-AI Education). (2026). Measured efficiency has not moved: a weighted average PUE of 1.54. AI Infrastructure Atlas. Retrieved 15 September 2026, from https://www.gage.academy/tools/ai-infrastructure-atlas/records/AIA-2026-0031-uptime-institute-pue-1-54
MLA
"Measured efficiency has not moved: a weighted average PUE of 1.54." AI Infrastructure Atlas, GAGE (Global Academy of Generative-AI Education), 15 September 2026, https://www.gage.academy/tools/ai-infrastructure-atlas/records/AIA-2026-0031-uptime-institute-pue-1-54.
Chicago
GAGE (Global Academy of Generative-AI Education). "Measured efficiency has not moved: a weighted average PUE of 1.54." AI Infrastructure Atlas. Last modified 15 September 2026. https://www.gage.academy/tools/ai-infrastructure-atlas/records/AIA-2026-0031-uptime-institute-pue-1-54.
Permalink
https://www.gage.academy/tools/ai-infrastructure-atlas/records/AIA-2026-0031-uptime-institute-pue-1-54

Last updated . Every record re verified . The ledger is checked monthly, first Monday, and the same day for any regulator decision on large loads or water.

Back to the full ledger, or every record for Global and every figure of record record.

GAGE briefings tell you which AI regulation deadlines are coming, what they actually require of you, and when a program opens.

Powered by GAGE, free EU AI Act tools from the Global Academy of Generative-AI Education
CallEmailHelp