Amazon · Berwick, Pennsylvania

AWS Berwick

139MW

The power of 110,000 US homes.

Drawing power since Sep 2025. Projected to reach 212 MW by Aug 2027.

Capital cost
$4.1B
Chips
Trainium2, Trainium3
Users
Anthropic (unconfirmed)
Project
Project Rainier
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Power over time

facility power · 10 milestones
Every milestone
  1. 1 Jul 2021 — Land clearing begins. Talen Energy reported on July 12, 2021 that site-preparation permits had already been obtained and site work was underway, while permits for construction of the first building were still being pursued. We model land clearing as starting from the beginning of the month.
  2. 17 Jan 2023 — Cumulus completes a 48 MW, 300,000 sq ft powered shell for the first data center at the Susquehanna campus. The shell is available for lease, with the campus still awaiting its first tenant and commercial operations.
  3. 4 Mar 2024 — AWS acquires the Cumulus/Talen building campus for $650M.
  4. 1 Jun 2024 — Building 1 fit out and related construction begins under Amazon, based on the Susquehanna River Basin Commission (SRBC) schedule.
  5. 9 Sep 2025 66 MW Building 1 operational estimate. According to Google Earth Satellite Imagery from this date, Building 1 appears structurally complete and likely operational, while Building 2 is still missing two generators.
  6. 7 Jan 2026 102 MW Building 2 operational estimate. This is based on the progress visible in the September 2025 image. The DEP also issues an air plan approval to add 48 more emergency generators on this date.
  7. 12 Mar 2026 102 MW The SRBC increases approved water use from 0.060 MGD to 0.129 MGD. This supports that some expansion is happening, but does not explicitly prove a third operational building.
  8. 5 May 2026 102 MW Buildings 1 and 2 visibly complete and operational. Building 3 appears complete and may be commissioning, but it's likely not operational yet given the immediate surrounding construction work. Several additional building shells and pads are still in construction, but none are assumed operational due to all the construction work visible. This is based on satellite imagery from this date.
  9. 1 Aug 2026 139 MW Building 3 expected to come online sometime around August 2026, since in the May satellite image it appeared structurally complete with minimal construction surrounding it. Basing MW estimate using Building 2 as a reference.
  10. 1 Aug 2027 · projected 212 MW Building 4 expected to come online around August 2027, judging from prior satellite imagery. Modeled at twice Building 2's capacity because Building 4 is approximately twice its size.

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 Columbia County, PA. Each grid is a balancing authority. Generation only; imports are excluded. Every grid behind an AI site.

Owners plan 15 MW of new power in Columbia County, all solar

power plants in Columbia County · EIA-860M, September 2026
  1. Montour Tower Drive Solar LLC Solar · 3 MW · Sep 2027 · proposed · Dimension Energy LLC
  2. Greenwood Bottom Road Solar LLC Solar · 3 MW · Mar 2027 · being built · Dimension Energy LLC
  3. Greenwood Route 254 Solar LLC Solar · 3 MW · Mar 2027 · being built · Dimension Energy LLC
  4. Madison Taylor Road Solar LLC Solar · 3 MW · Mar 2027 · being built · Dimension Energy LLC
  5. Penn Shoofly Solar LLC Solar · 3 MW · May 2027 · proposed · Dimension Energy LLC

EIA lists no generator of 1 MW or more in service in Columbia County. Since January 2023: 0 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. NYT reporting that one of the Project Rainier sites may be in Pennsylvania
  2. Talen SEC filing detailing the $650M sale of the Cumulus data center campus to AWS
  3. Pennsylvania PUC filing describing the planned 16-building AWS data center development
  4. SRBC filing covering AWS campus expansion and water-use plans

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 Berwick. 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.