Office for Nuclear Regulation, Environment Agency & Natural Resources Wales

UK HPR1000

UK HPR1000 - generic design copyright CGN

Requesting Party: General Nuclear System Ltd

Current position: Assessment of reactor design complete. Design Acceptance Confirmation issued in February 2022.


  • February 2022 - Design acceptance granted
  • February 2020 - Step 4
  • November 2018 - Step 3
  • November 2017 - Step 2
  • January 2017 - Step 1 (preparatory step)

Stakeholder Engagement Plan for UK HPR1000 (December 2019)

Progress reports

At the end of each step of the assessment, the regulators publish detailed technical reports and a summary report.

Find out more about progress reports

Regulatory observations and resolution plans

A regulatory observation is a potential regulatory shortfall identified by the regulators. It requires action and new work for it to be addressed.

More on observations

Design acceptance

In February 2022, ONR and the Environment Agency issued the HPR1000 design a Design Acceptance Confirmation.

More on DAC/SoDA