Supercomputers/Systems/AWS Susquehanna Campus (Salem Township)
USA · operational · mixed
AWS Susquehanna Campus (Salem Township)
Also known as Cumulus campus; AWS Berwick
Operated by Amazon at Cumulus Data Campus (Salem Township) .
Researched with AI assistance, checked by scripts. These rows were researched by AI agents reading public operator, laboratory and vendor sources, appended by scripts and checked by automated validation; no subject-matter expert has reviewed them (how this site is made). A mechanical second-reader pass has since fetched every cited source: 1350 of 1540 systems have a readable citation that names them, and 64 are genuinely weakly sourced. Every claim carries its source and a confidence tier. Treat anything below verified as a lead, not a citation.
Measured performance
- Rmax
- -
- Rpeak
- -
- Rmax ÷ Rpeak
- -
- Cores
- -
- Power
- -
- Per watt
- - GF/W
Figures are as last publicly reported for the configuration described below, not a live measurement. Where a system was upgraded in place, the post-upgrade configuration is shown and the earlier one appears in the timeline.
What this machine is made of
One row per supplier relationship. “Supplier at build” is the company that shipped the part at the time; where that company has since been acquired, the parent it rolls up to today is shown beside it. That distinction is what makes ticker-level aggregation possible across a thirty-year dataset.
| Role | Part | Supplier at build | Quantity | Confidence | Source |
|---|---|---|---|---|---|
| Integrator | - Amazon Web Services owns and builds the 960 MW Cumulus campus bought from Talen, next to the Susquehanna nuclear plant | Amazon | - | Reported | world-nuclear-news.orgepoch.ai |
| Power | - Talen supplies up to 1,920 MWe from the Susquehanna nuclear plant to AWS through 2042 | Talen Energy | - | Reported | world-nuclear-news.org |
AI datacenter metrics
Figures beyond an accelerator count, each with who stated it. What can and cannot be compared across AI datacenters.
| Metric | Value | As of | Basis | Note | Source |
|---|---|---|---|---|---|
| Facility power | 960 MW | 2025-06 | Design target | Talen-described campus size at sale to AWS; World Nuclear News repeats it in the June 2025 supply deal story | world-nuclear-news.org |
| IT power | 108 MW | 2026-08 | Third-party estimate | Epoch AI model from permits, water filings and imagery for three operational buildings; projected 169 MW by Q3 2027 | epoch.ai |
How it is powered
| Source | Provider | MW | Status | As of | Basis | Note | Source link |
|---|---|---|---|---|---|---|---|
| Nuclear | Talen Energy | 1,920 | contracted | 2025-06 | Operator stated | Talen and AWS supply agreement for 1,920 MWe from the Susquehanna plant through 2042, full volume no later than 2032; replaces the earlier co-location arrangement | world-nuclear-news.org |
How AI campuses are powered: capacities are what the operator, utility or filing states, not what has been delivered.
The read
Amazon Web Services' data center campus beside Talen Energy's Susquehanna nuclear plant in Salem Township, near Berwick, Pennsylvania. Talen's Cumulus subsidiary developed it as a 960 MW campus and sold it to AWS; Epoch AI's timeline dates the sale to March 2024 at 650 million dollars, citing a Talen SEC filing. In June 2025 Talen and AWS replaced the earlier co-location arrangement with a front-of-the-meter supply deal for 1,920 MWe from the plant through 2042, reaching full volume no later than 2032 (World Nuclear News). Epoch's satellite and permit model treats Buildings 1 and 2 as operational and Building 3 as complete, for about 108 MW of IT power, with a projected 169 MW by mid 2027, assuming Trainium2 chips and marking Anthropic's use as speculative; those are Epoch estimates, and AWS has published no chip count for this site. Epoch also cites a Pennsylvania PUC filing for 16 planned buildings. The Indiana campus that AWS has tied to Anthropic is project-rainier.
Timeline
- 2024-03 Announced source
Site & facility
Cumulus Data Campus (Salem Township)
- Location
- Salem Township, PA, USA
- Utility
- Talen Energy (Susquehanna nuclear plant)
Change history
- 2026-10-17 Added AWS Susquehanna Campus (Salem Township) (Amazon)
Source check
We fetched this system's own citations and recorded whether each page actually mentions it. This is a corroboration signal, not a fact check, and it is published so you can see how well the sourcing holds up rather than take it on trust.
| Cited source | Result | Found on the page |
|---|---|---|
| epoch.ai | names system only | - |
| world-nuclear-news.org | names system only | - |
Checked 2026-10-18 by pnpm verify. Re-run it and the table changes with the web.