Particle.news

Seven SSN-AUKUS Reactors in Build as Rolls-Royce Doubles Derby Capacity

The push signals a shift to steady, faster submarine output for both navies.

Overview

  • Rolls-Royce said work is underway on seven SSN-AUKUS reactor plants in Derby, including long-lead parts such as pressure vessels and steam-raising units.
  • The company confirmed it cleared the PWR3+ reactor’s critical design review late last year, creating a fixed baseline tailored to UK and Australian needs.
  • Manufacturing space at the Raynesway site has doubled, with additional facilities set to begin soon, to support production at higher volume.
  • Plans target first reactor deliveries in the mid‑2030s and a build rhythm of one submarine every 18 months, with an aim to reach 12 months late in the 2030s.
  • Rolls-Royce is expanding training through its UK Skills Academy and work with the MoD, BAE and Babcock, while also managing parallel demand from the Dreadnought submarine program.