Google · Columbus, Ohio

Google Columbus

364MW

The power of 300,000 US homes.

Drawing power since Apr 2024. Projected to reach 464 MW by Jul 2027.

Capital cost
$11.5B
Chips
TPU v5e, TPU v5p, TPU v6e, TPU v7
Users
Google DeepMind (unconfirmed)
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Power over time

facility power · 9 milestones
Every milestone
  1. 1 Oct 2021 — Land clearing begins on the eastern half of the site, for Buildings 1-2
  2. 1 Jul 2023 — Building 2 foundation work begins. Building 1 generators seem complete, cooling towers still under construction.
  3. 1 Apr 2024 78 MW Building 1 operational. No visible construction and roads/parking complete around the building. Building 2 chillers are beginning construction. Foundation work begins for Building 3.
  4. 1 Mar 2025 156 MW Building 2 operational. Parking complete, no more visible construction.
  5. 1 Oct 2025 260 MW Building 3 operational. Surrounding roads finished, no more visible construction.
  6. 21 Feb 2026 260 MW Buildings 1-3 are visibly operational, with steam coming out of the cooling towers. Meanwhile Building 4 is extremely close to completion, with all backup generators complete with only 3 cooling towers missing their fans. ~1/2 the generators are installed for Building 5, and the roof is mostly complete (starting to install the final white layer, with the actual roof structure already complete).
  7. 1 May 2026 364 MW Building 4 operational. No more visible construction, and since only 3 fans needed to be installed since Feburary, operational date was likely soon after. Building 5 roof almost complete.
  8. 5 Aug 2026 364 MW Confirmation that Building 4 is complete. Building 5 has progressed since February, with a complete roof, all backup generators in place, and five cooling towers in place.
  9. 1 Jul 2027 · projected 464 MW Building 5 operational. The transmission line construction notice that expands site by 100 MW is assumed to be entirely for Building 5, and has an in-service date of July 1, 2027 (page 3). Estimate taken on the safe side based on completion times for Building 3-4 from when roof was complete.

Every step Epoch planned here on 2 Sep 2026 is still on plan. Planned against reached

Gas made 41% of the power on this site's grid

net generation by fuel · Oct 2025 to Sep 2026

PJM Interconnection, LLC PJM · balancing authority

  1. Gas 41%
  2. Coal 17%
  3. Nuclear 31%
  4. Wind 4%
  5. Solar 3%
  6. Hydro 2%
  7. Other 3%

The grid of the utilities that serve Franklin County, OH. Each grid is a balancing authority. Generation only; imports are excluded. Every grid behind an AI site.

Owners plan 400 MW of new power in Franklin County, mostly solar

power plants in Franklin County · EIA-860M, September 2026
  1. Flint Storage · 200 MW · Jul 2027 · being built · Flint
  2. Pleasant Prairie Solar Energy LLC Solar · 200 MW · Dec 2026 · being built · Invenergy Services LLC

In service in Franklin County today: 15 MW. Since January 2023: 7 MW added, 3 MW retired. A plant in the same county does not mean it feeds the site. Power plants near every AI site.

Sources

selected by Epoch AI
  1. DCD article detailing early work beginning on the site
  2. Transmission line construction notice; details current site capacity, expansion, and maximum future site capacity

Data: Epoch AI, “AI data centers”, CC BY 4.0, retrieved 22 Oct 2026. Facility power adds cooling and other overhead to the IT power the servers draw. Placed at the centre of Columbus. Grid: U.S. Energy Information Administration, Hourly Electric Grid Monitor (Form EIA-930), public domain, retrieved 16 Oct 2026; utilities by county from Form EIA-861 and the U.S. Census Bureau Geocoder, public domain. Power plants: U.S. Energy Information Administration, Form EIA-860M, public domain, inventory as of September 2026. All sources.