Nvidia has partnered with German energy operator PreussenElektra to explore converting decommissioned nuclear power plant sites into massive AI data centers. The joint feasibility assessment aims to repurpose existing industrial infrastructure to address the soaring power and grid connectivity demands of modern high-performance computing.
Key facts
- Partnership: Nvidia is collaborating with PreussenElektra (PEL), an operator managing the decommissioning of eight shut-down German nuclear plants.
- Objective: Evaluate whether closed nuclear facilities can host high-density «AI factories» to cut construction timelines and costs.
- Current status: The initiative is strictly an experimental feasibility study; no commercial construction contracts or capital investments have been finalized.
- Core assets: Closed plants offer high-voltage transmission lines, cooling infrastructure, industrial land zoning, and grid connectivity already in place.
- Background: Germany permanently decommissioned its remaining active nuclear reactors in April 2023.
Why nuclear sites appeal to AI infrastructure
Building hyperscale data centers from scratch has become increasingly difficult due to permitting delays, land scarcity, and backlogs in securing high-voltage power grid connections. As enterprises scale their AI infrastructure to support large compute clusters—similar to how enterprises deploy services like ChatGPT Work—power access has emerged as the principal bottleneck.
Decommissioned nuclear plants resolve several development hurdles:
- Substantial grid capacity: Nuclear stations were originally engineered to export gigawatts of base-load electricity into regional grids, meaning substations and transmission corridors are already built.
- Water access: Most facilities are situated directly beside major rivers or cooling reservoirs, providing ready access to cooling resources required for thermal dissipation.
- Pre-zoned industrial land: Converting existing brownfield sites bypasses lengthy rezoning processes required when acquiring greenfield agricultural or commercial plots.
«AI factories require access to power, land and high-capacity infrastructure, and former industrial sites could provide a strong foundation for this next generation of computing,» stated Markus Hacker, senior regional director at Nvidia, noting the collaboration will determine how the sites can strengthen European digital infrastructure.
Project scope and technical considerations
| Feature | Greenfield Data Center Build | Repurposed Nuclear Plant Site |
|---|---|---|
| Grid Interconnection | Often requires multi-year grid queue approvals | Pre-existing high-voltage grid connections |
| Zoning | Requires new industrial zoning permits | Existing heavy-industrial designation |
| Cooling Access | Dependent on local municipal or water permits | Established industrial water infrastructure |
| Current Phase | Commercial deployment | Feasibility assessment only |
PreussenElektra is currently overseeing the dismantling of eight nuclear stations across Germany. The assessment will look into specific structural parameters, verifying whether existing industrial yards can safely accommodate server halls, backup generators, and fiber connectivity without disrupting ongoing dismantling operations.
«Our former power plant sites have valuable industrial infrastructure and offer opportunities for new, future-oriented uses,» said Guido Knott, Chairman of PreussenElektra’s Management Board. Knott highlighted that the study aims to test whether former generation hubs can be transformed into productive hubs for digital compute.
Background
Following a planned nuclear phaseout policy accelerated after the 2011 Fukushima accident, Germany officially disconnected its final three operational commercial reactors in April 2023. Roughly 30 nuclear facilities nationwide are currently in various stages of decommissioning. PreussenElektra’s plants form a notable portion of this estate, leaving large tracts of industrial land with robust utility connections that would otherwise sit idle during long-term remediation.
What’s next
Nvidia and PreussenElektra will continue their open-ended technical evaluation across the candidate sites in Germany. Neither organization has published a specific deadline for the conclusion of the assessment, nor have they announced formal budgets or architectural roadmaps. Readers following high-performance computing developments can track ongoing updates via NEWS.
FAQ
Are the data centers going to be powered by active nuclear reactors?
No. Germany completely shut down all operational nuclear power reactors in April 2023. The project involves repurposing the land, substations, and electrical connections left behind at decommissioned sites, drawing power from the current national grid.
Has Nvidia committed funding to build these facilities?
No financial commitments, construction timelines, or formal building plans have been agreed upon yet. Both companies have stated that the effort remains in an exploratory feasibility phase.
Sources: Latest from Tom's Hardware.
Cover image: Photo: Stephen Craven / CC BY-SA 2.0.
