RE: Four mini nuclear reactors to be built Nottinghamshire24 Jun 2026 22:00
I asked Claude.
This is the response.
The four mini reactors at Cottam in Nottinghamshire are a Holtec International and EDF proposal for SMR-300 small modular reactors at the former Cottam coal-fired power station (GOV.UK) (NucNet) , with Tritax involved as the real estate fund manager developing data centres on the site, valued at around £11bn for the SMRs alone (New Civil Engineer) .
Rolls-Royce isn't part of this project — it's a separate competitor. Holtec's SMR-300s have a net capacity of 320 MWe and are built in pairs (World Nuclear Association) , which is a different design entirely from Rolls-Royce's 470MWe reactor.
Rolls-Royce's own SMR project went to a different site: Rolls-Royce SMR was selected as the preferred bidder to partner with Great British Energy – Nuclear to develop small modular reactors (GOV.UK) , and that's going to Wylfa in Anglesey, Wales (Senedd) — not Nottinghamshire.
So to directly answer your question: Rolls-Royce won't be building or directly benefiting from the Cottam (Nottinghamshire) reactors — that's Holtec, EDF, and Tritax's project. Rolls-Royce is busy with its own (separate) SMR programme at Wylfa. The only indirect overlap would be general UK nuclear supply chain companies that might work across multiple projects, but there's no indication Rolls-Royce has a role at Cottam specifically.