Who makes nuclear for AI data centers
Power purchase agreements with existing nuclear plant operators, including deals that fund restarts of previously shuttered reactors, to secure firm, carbon-free power for AI load.
This category covers commercial arrangements — not hardware — where a data center operator contracts directly with a utility or independent power producer for output from an existing nuclear plant, sometimes underwriting the restart of a reactor that had been retired. These deals sit upstream of the transmission and interconnection equipment in Layer 8.09 that physically delivers the power, and they compete with the broader pool of utility and IPP deals in Layer 8.07 for the same firm, carbon-free attributes. Existing nuclear capacity is fixed in the near term — no new large reactor has been added to most of these fleets in years — so demand from AI operators for this power is a claim on a scarce, non-expandable resource rather than a new supply chain. An investor should watch how many more restart candidates exist in a given fleet, since each one is a one-time, plant-specific event, and how regulators and other ratepayers respond to large single buyers securing capacity that was previously sold into the broader grid.
AI delta: AI operators are contracting directly for existing nuclear output, including funding restarts of retired reactors, to lock in firm carbon-free power without waiting for new generation.
Companies on this part (13)
| Company | Role | Ownership | Ticker | Price | 1d | Confidence | Note |
|---|---|---|---|---|---|---|---|
| AEP | utility | public | AEP | 130 USD | -1.1% | inferred | |
| Ameren | utility | public | AEE | 108 USD | -0.8% | inferred | |
| Constellation | utility | public | CEG | 253 USD | -0.6% | inferred | Crane/TMI-1 restart |
| Dominion | utility | public | D | 65.20 USD | +0.2% | inferred | |
| Duke Energy | utility | public | DUK | 125 USD | +0.4% | inferred | |
| Entergy | utility | public | ETR | 107 USD | -0.8% | inferred | |
| NextEra | utility | public | NEE | 82.10 USD | +0.2% | inferred | Duane Arnold restart |
| PSEG | utility | public | PEG | 72.02 USD | -1.1% | inferred | |
| Southern Company | utility | public | SO | 92.89 USD | -1.1% | inferred | |
| Talen | utility | public | TLN | 328 USD | -1.1% | inferred | Susquehanna–AWS |
| Vistra | utility | public | VST | 140 USD | +0.1% | inferred | |
| Xcel | utility | public | XEL | 78.05 USD | -1.1% | inferred | |
| Holtec/Palisades | utility | private | inferred |
Who competes here
The same table read the other way: every company above competes for nuclear: existing fleet PPAs & restarts sockets. Confidence tags matter — an inferred placement is a lead, not a confirmed rivalry.
Nearby parts
- Previous in layer: Fuel cells
- Next in layer: SMRs, advanced reactors, components, fuel
- Layer: Layer 8 — Power generation & energy supply
From the blog
Watch
Independent videos — no affiliation; nothing loads from YouTube until you click.
Latest feed
- Nvidia eyes converting old nuclear plants into massive AI data centers — Tom's Hardware, 2026-10-25
- Amazon backs 960MW nuclear project for AI power — DigiTimes, 2026-10-22Amazon intends to invest in and purchase power from a 960MW nuclear plant in Indiana to support its expanding AI data center needs.
- US restarts three shut-down nuclear reactors to feed AI data centers — Tom's Hardware, 2026-10-20The U.S. is supporting the restart of nuclear reactors to increase energy supply for AI data centers.
- Taiwan industry seeks nuclear restart and utility relief amid energy costs boom — DigiTimes, 2026-10-20Taiwan's business groups are urging the government to financially support state utilities and speed up nuclear power plant restarts due to massive increases in natural gas costs.
- AEP signs 960-MW Indiana nuclear pact with Amazon, X-energy — Utility Dive, 2026-10-19Amazon signed a 960-MW nuclear power purchase agreement with AEP in Indiana, covering the facility's cost and operation.
- Number of data center fires and power failures has doubled since 2024 — Data Center Dynamics, 2026-10-12Data from the Energy Incident Register shows a significant increase in fire and power failure incidents related to power infrastructure since 2024.
- DCD Studio: The rise of US nuclear power, with Mark Gusakov, The Digital Infrastructure Alliance — Data Center Dynamics, 2026-10-07The news discusses the growing integration of US nuclear power and small modular reactors (SMRs) to support data center power demands.
- Google signs 3.6GW deal with Constellation to secure power in PJM service area — Data Center Dynamics, 2026-10-06Google has signed a 3.6 gigawatt power purchase agreement with Constellation to ensure reliable energy supply for its data centers in the PJM interconnection region.
- DOE intends to loan Vistra $4.2B for nuclear fleet improvements — Utility Dive, 2026-10-06The Department of Energy (DOE) plans to provide a $4.2 billion loan to Vistra to facilitate improvements and expansions across its nuclear power fleet.
- Constellation, Google strike 890-MW nuclear deal in PJM — Utility Dive, 2026-10-06Google has signed a power purchase agreement with Constellation to source 890 megawatts of carbon-free electricity from a nuclear portfolio in the PJM interconnection.
Questions about nuclear: existing fleet PPAs & restarts
- What are nuclear: existing fleet PPAs & restarts?
- Power purchase agreements with existing nuclear plant operators, including deals that fund restarts of previously shuttered reactors, to secure firm, carbon-free power for AI load.
- Which companies make nuclear for AI data centers?
- This catalog lists 13 companies on Nuclear: existing fleet PPAs & restarts, 12 of them with listed equity: AEP, Ameren, Constellation, Dominion, Duke Energy, Entergy, NextEra, PSEG, Southern Company, Talen, and 3 more.
- How does AI change demand for nuclear: existing fleet PPAs & restarts?
- AI operators are contracting directly for existing nuclear output, including funding restarts of retired reactors, to lock in firm carbon-free power without waiting for new generation.
- How reliable are these nuclear: existing fleet PPAs & restarts supplier placements?
- The 13 placements on this part break down as 13 inferred. "disclosed" means the company or a filing says so; "reported" comes from trade press or a reference-design list; "inferred" is a taxonomy lead with no citation yet.
Sources: placements without a source URL come from the taxonomy seed and are tagged accordingly. How this data is built.· Markdown · JSON