CoreWeave · Afton, Texas

Coreweave Helios

200MW

The power of 160,000 US homes.

Drawing power since Aug 2026. Projected to reach 800 MW by Jan 2029.

Capital cost
$5.0B
Chips
B200
Users
OpenAI (unconfirmed)
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Power over time

facility power · 7 milestones
Every milestone
  1. 31 May 2025 — The former crypto mining Helios site begins converting the first building and expanding, with land cleared for additional buildings.
  2. 27 Aug 2025 — Backup generator pads and steel framing for chillers are visible, similar to the 3D renderings.
  3. 4 Apr 2026 — Building 1 appears substantially complete. The main white-roofed data hall is visible with exterior mechanical/electrical equipment rows installed on both sides, and adjacent generator/equipment pads plus laydown yards are active. A large graded pad north of Building 1 suggests preparation for the next phase/building. No clear satellite evidence that the AI/HPC facility is operational yet.
  4. 17 Jun 2026 — Building 1 appears externally complete and likely Ready for Service, with all cooling/roofing/generators in place, but we're not labeling it operational yet due to visible surrounding yard/construction work. CoreWeave likely still needs time to install chips and use all their designated chip capacity. The pad to the northeast has foundations being laid out for Building 2.
  5. 30 Aug 2026 200 MW Building 1 operational at full capacity. This is based on "Phase I", which is expected to be operational by the end of the first half of 2026. We added two months of overhead to account for remaining construction and/or installation of CoreWeave's chips, since the June 17 image still showed active minor construction around the building.
  6. 1 Jan 2028 · projected 600 MW Building 2 and 3 are operational at full capacity. This corresponds to "Phase II", which is expected to be delivered "throughout 2027". We assume it takes until the end of 2027 to reach full capacity.
  7. 1 Jan 2029 · projected 800 MW Building 4 operational at full capacity. This corresponds to "Phase III", which is expected to be delivered "starting in 2028". We assume it takes until the end of 2028 to reach full capacity.

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

Gas and wind lead the two grids that serve Dickens County

net generation by fuel · Oct 2025 to Sep 2026

Electric Reliability Council of Texas, Inc. ERCO · balancing authority

  1. Gas 40%
  2. Coal 12%
  3. Nuclear 8%
  4. Wind 24%
  5. Solar 16%
  6. Hydro <1%
  7. Other <1%

Southwest Power Pool SWPP · balancing authority

  1. Gas 27%
  2. Coal 26%
  3. Nuclear 5%
  4. Wind 37%
  5. Solar 2%
  6. Hydro 3%
  7. Other <1%

The utilities that serve Dickens County, TX, report to 2 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 204 MW of new power in Dickens County, all solar

power plants in Dickens County · EIA-860M, September 2026
  1. Donegal Solar Project Solar · 204 MW · Oct 2028 · proposed · HE-Cottonwood Solar, LLC

In service in Dickens County today: 450 MW. Since January 2023: 300 MW added, 0 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. Galaxy Q3 financial results with power capacity timeline
  2. Permit review with details on backup generators and power capacity
  3. 3D renderings of Helios Building 1 on Galaxy's website, showing generators and chillers
  4. TDLR record with Building 1 construction costs and end date

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 Afton. 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.