Office for Nuclear Regulation & Environment Agency

UK HPR1000

UK HPR1000 - generic design copyright CGN

Requesting Party: General Nuclear System Ltd

Current position: Successful completion of the high-level technical assessment of the design


  • 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)

Environment Agency consultation on UK HPR1000 design

5 April

The Environment Agency’s consultation on its preliminary conclusions following its detailed assessment of the environmental aspects of the UK HPR1000 new nuclear power station design is now closed.

The 12-week consultation ran from 11 January 2021 until 4 April 2021.

The Environment Agency will publish a document containing all responses made to the consultation in May 2021.

It will carefully consider all the responses and complete the detailed assessment. It will then summarise the responses to the consultation, issues raised and its views on those issues in a decision document.

The Environment Agency aims to publish its final conclusions, alongside the ONR, in early 2022.

You can find details of the consultation questions, detailed assessment topics and Assessment Findings in the full consultation document and assessment reports on GOV.UK and the Environment Agency’s online consultation hub.

Make a comment about the UK HPR1000 design

You can make a comment about the UK HPR1000 design via the UK HPR1000 website.

UK HPR1000 website

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 Issues and Resolution Plans

A regulatory issue is a serious regulatory shortfall identified by the regulators. The issues are potentially significant enough to prevent provision of design acceptance.

More on issues

GDA issues

GDA issues remain following issue of interim design acceptance. They need to be resolved before a final design acceptance can be granted.

More on GDA issues

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

On completion of the GDA, the regulators will issue reports on their findings along with the supporting technical assessment reports.

More on DAC/SoDA