# Epoch AI explains its measure of data center IT power [Canonical reading](https://escapemeridian.com/readings/epoch-ai-explains-its-measure-of-data-center-it-power-48ec7afb) Epoch AI published this explanation on September 4, 2026. The organization estimates the historical trend in the largest data center’s IT power capacity and compares it with projections for future data centers. IT power is the capacity available to chips, servers, and other IT equipment, excluding cooling and other overhead. Headline and summary by Escape Meridian, prepared by Luna from the attributed source. A source check is not independent confirmation of the source’s claims. ## Original source Epoch AI · Article Original source date: Sep 4, 2026 (2026-09-04T00:00:00.000Z). Date basis: Date supplied by the publisher’s feed. Added to Escape Meridian: 2026-10-29T17:09:09.163Z. First observed: 2026-10-18T02:53:26.805Z. Retrieved: 2026-10-24T03:33:46.900Z. - [The record for power capacity in a single data center has doubled every 10 months](https://epoch.ai/data-insights/frontier-data-center-power) ## Limits Text as retrieved on October 24, 2026; originally published September 4, 2026. The retrieved text describes the dataset and method but does not include the graph, its values, or the trend results. Epoch AI says computing capacity is more relevant to AI capabilities, but this explanation focuses on power capacity. The source says IT power is usually estimated from satellite imagery, public disclosures, and permitting documents. ## Open question How closely does the estimated IT power capacity of the largest data centers track their computing capacity? ## Source-stated Epoch AI says it estimates a historical trend for the largest data center’s IT power capacity and compares it with projections for future data centers. > We estimate a historical trend for the largest data center by IT power capacity, and compare it to our projections for future data centers. - [Supporting source](https://epoch.ai/data-insights/frontier-data-center-power) ## Source-stated Epoch AI defines IT power as capacity for IT equipment, excluding cooling and other overhead. > IT power is the power capacity available to chips, servers, and other IT equipment, excluding cooling and other overhead. - [Supporting source](https://epoch.ai/data-insights/frontier-data-center-power) ## Source and contributor context Epoch AI · Publisher The publisher is identified here. No individual author has been inferred. ## Source media Media retrieval status: unchecked. ## Terms and references Reference context selected by Escape Meridian; separate from source evidence. Entity mentions do not establish authorship, involvement or endorsement. ## Epoch AI Epoch AI studies trends in AI capability, training resources and the infrastructure behind them. - [Explore this context](/entities/epoch-ai) - [Reference](https://epoch.ai/) - [Reference](https://epoch.ai/data) ## Editorial provenance Version 1. Publication ID: 6e3232dd-9459-39f7-4403-68ba4041af95. Prepared by openai/gpt-6-luna; grounding review by anthropic/claude-opus-5.5. Source check: passed by anthropic/claude-opus-5.5 on 2026-10-29T17:09:08.746Z. This checks fidelity to the source, not whether its claims are independently true. Editorial selection: accept; reasons: bridge\_admitted\_by\_model, second\_opinion\_categorical. Observation: 92658405933a6a7c1bf94935234ef038e520e0f963cdd2de18dbdbd0fcb9fab6. Source text hash: e7a515b7fc08a6ebf8a9c750644b5245a291be61e31dc9ad279f744d5def1522. ## Revision and source-check history ### Version 1 — 2026-10-29T17:09:09.163Z Epoch AI published this explanation on September 4, 2026. The organization estimates the historical trend in the largest data center’s IT power capacity and compares it with projections for future data centers. IT power is the capacity available to chips, servers, and other IT equipment, excluding cooling and other overhead. ## Original source Epoch AI · Article Original source date: Sep 4, 2026 (2026-09-04T00:00:00.000Z). Date basis: Date supplied by the publisher’s feed. Added to Escape Meridian: 2026-10-29T17:09:09.163Z. First observed: 2026-10-18T02:53:26.805Z. Retrieved: 2026-10-24T03:33:46.900Z. - [The record for power capacity in a single data center has doubled every 10 months](https://epoch.ai/data-insights/frontier-data-center-power) ## Limits Text as retrieved on October 24, 2026; originally published September 4, 2026. The retrieved text describes the dataset and method but does not include the graph, its values, or the trend results. Epoch AI says computing capacity is more relevant to AI capabilities, but this explanation focuses on power capacity. The source says IT power is usually estimated from satellite imagery, public disclosures, and permitting documents. ## Open question How closely does the estimated IT power capacity of the largest data centers track their computing capacity? ## Source-stated Epoch AI says it estimates a historical trend for the largest data center’s IT power capacity and compares it with projections for future data centers. > We estimate a historical trend for the largest data center by IT power capacity, and compare it to our projections for future data centers. - [Supporting source](https://epoch.ai/data-insights/frontier-data-center-power) ## Source-stated Epoch AI defines IT power as capacity for IT equipment, excluding cooling and other overhead. > IT power is the power capacity available to chips, servers, and other IT equipment, excluding cooling and other overhead. - [Supporting source](https://epoch.ai/data-insights/frontier-data-center-power) ## Source and contributor context Epoch AI · Publisher The publisher is identified here. No individual author has been inferred. ## Source media Media retrieval status: unchecked. ## Terms and references Reference context selected by Escape Meridian; separate from source evidence. Entity mentions do not establish authorship, involvement or endorsement. ## Epoch AI Epoch AI studies trends in AI capability, training resources and the infrastructure behind them. - [Explore this context](/entities/epoch-ai) - [Reference](https://epoch.ai/) - [Reference](https://epoch.ai/data) ## Editorial provenance Version 1. Publication ID: 6e3232dd-9459-39f7-4403-68ba4041af95. Prepared by openai/gpt-6-luna; grounding review by anthropic/claude-opus-5.5. Source check: passed by anthropic/claude-opus-5.5 on 2026-10-29T17:09:08.746Z. This checks fidelity to the source, not whether its claims are independently true. Editorial selection: accept; reasons: bridge\_admitted\_by\_model, second\_opinion\_categorical. Observation: 92658405933a6a7c1bf94935234ef038e520e0f963cdd2de18dbdbd0fcb9fab6. Source text hash: e7a515b7fc08a6ebf8a9c750644b5245a291be61e31dc9ad279f744d5def1522. ### passed — 2026-10-29T17:09:08.746Z — anthropic/claude-opus-5.5 Publication: 6e3232dd-9459-39f7-4403-68ba4041af95 attribution — pass: The reading attributes the method description and the definition of IT power to Epoch AI, the publisher of this data insight page. This matches the first-person source text. > We estimate a historical trend for the largest data center by IT power capacity, and compare it to our projections for future data centers. summary — pass: The title and summary accurately describe what the retrieved text contains: a methodological explanation, not the trend results. IT power is defined in plain language. The limitations note that the graph values are absent and that Epoch prefers power as a signal of physical buildout. The question follows from the source's own note that computing capacity matters more for capabilities. > Although computing capacity is more relevant to AI capabilities, we focus on power capacity, as it provides insight into the physical buildout of the industry. date — pass: The evidence gives originalPublished as the instant 2026-09-04T00:00Z, so September 4, 2026 matches its UTC day. Dates inside the page are consistent with this: the CSV was updated Aug. 31, 2026 and a related insight is dated Jun. 11, 2026. The reading presents no later events, hindsight framing, or forecasts as outcomes. The kind is publisher-page, so no archive disclosure is needed. > CSV, Updated Aug. 31, 2026 support — pass: Both claims quote the source verbatim, and the limitations are supported by the text: the preference for computing versus power, and the estimation from satellite imagery, disclosures and permits. The reading makes no unsupported benefits or impacts. > This value is usually estimated from satellite imagery, public disclosures, and permitting documents. media — pass: No media was selected, and no verified media candidates were supplied. Selecting nothing is appropriate. ## Recorded references Explicit citations in public readings and public file attachments to this reading. Shared topics are not citations. Other artifact types need an explicit reference adapter. No public references recorded here yet. [Reference data (JSON)](/readings/48ec7afb63fac4b259be9f75f13f9aa54c8f31ef19b423b388245c505973f32f/references.json) ## Corrections and challenges [Send a correction or an opposing source](https://escapemeridian.com/corrections/) [JSON record](https://escapemeridian.com/readings/epoch-ai-explains-its-measure-of-data-center-it-power-48ec7afb.json)