Microsoft · Goodyear, Arizona

Microsoft Goodyear

263MW

The power of 210,000 US homes.

Drawing power since Apr 2023.

Capital cost
$7.7B
Chips
H100, B200
Users
OpenAI, Microsoft
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Power over time

facility power · 6 milestones
Every milestone
  1. 21 Jun 2021 — Land clearing begins for Building 1.
  2. 24 Apr 2023 53 MW Building 1 operational. Based on interpolating satellite images from Sentinel-2 and Google Earth.
  3. 16 Jan 2025 105 MW Building 2 operational. Based on interpolating satellite images from Sentinel-2 and Google Earth.
  4. 1 Sep 2025 263 MW Building 3 and 4 operational. Based on interpolating satellite images from Sentinel-2 and Google Earth.
  5. 12 Nov 2025 263 MW Confirmation that Building 3 and 4 look complete.
  6. 27 Apr 2026 263 MW Foundations appear to be underway for Building 5 and 6, just north of Building 4.

Nuclear and gas lead the three grids that serve Maricopa County

net generation by fuel · Oct 2025 to Sep 2026

Salt River Project SRP · balancing authority

  1. Gas 33%
  2. Coal 8%
  3. Nuclear 51%
  4. Wind 1%
  5. Solar 7%
  6. Hydro <1%
  7. Other 0%

Arizona Public Service Company AZPS · balancing authority

  1. Gas 39%
  2. Coal 26%
  3. Nuclear 0%
  4. Wind 10%
  5. Solar 24%
  6. Hydro 0%
  7. Other 1%

Western Area Power Administration - Desert Southwest Region WALC · balancing authority

  1. Gas 48%
  2. Coal 0%
  3. Nuclear 0%
  4. Wind 9%
  5. Solar 6%
  6. Hydro 37%
  7. Other 0%

The utilities that serve Maricopa County, AZ, report to 3 grids; the data does not show which one feeds the site. Each grid is a balancing authority. Generation only; imports are excluded. Every grid behind an AI site.

Owners plan 3.6 GW of new power in Maricopa County, mostly storage

power plants in Maricopa County · EIA-860M, September 2026
  1. Saddleback Generation Station Gas · 1.3 GW · Dec 2030 · proposed · Copia Power
  2. Desert Sand BESS Solar · 600 MW · Dec 2028 · proposed · DESA bn, LLC
  3. Maricopa Solar Storage · 550 MW · Dec 2026 · being built · Maricopa Solar
  4. Red Hawk Gas · 392 MW · Oct 2027 · being built · Arizona Public Service Co
  5. Romero Energy Center Storage · 225 MW · Jun 2027 · being built · Romero Energy Center, LLC

In service in Maricopa County today: 24.0 GW. Since January 2023: 6.4 GW added, 0 MW retired. Owners plan to retire 3 MW more. 4 more planned plants are listed on the county’s row. 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. Maricopa County map
  2. Dust control permit
  3. SemiAnalysis article

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 Goodyear. 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.