Office for Nuclear Regulation & Environment Agency

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Generic Design Assessment (GDA) of new nuclear power stations

These web pages are joint regulator pages for both the Office for Nuclear Regulation (ONR) and Environment Agency. The regulators are working together to ensure that any new nuclear power stations built in the UK meet high standards of safety, security, environmental protection and waste management, through a process called Generic Design Assessment (GDA).

Before a new nuclear power station can be built and operated in the UK, in addition to the reactor design going through the GDA process, the proposed operator must obtain permission from regulators and Government in the form of:

  • Site licence and relevant consent to begin nuclear-related construction from ONR;
  • Environmental permits from Environment Agency or Natural Resources Wales (NRW);
  • Planning permission from the Department for Business, Energy and Industrial Strategy (BEIS).

More on the background

Public dialogue report assessing new nuclear power station designs

This report provides details of learning to come out of the Sciencewise supported project.

Sciencewise report

GDA comments process

You can make a comment about the UK ABWR design and the AP1000 design via the reactor designer's websites. The reactor designers will respond to the comments and issues raised.

The comments process

Quarterly updates

Find out more about the assessment of new nuclear reactor designs in our quarterly updates.

GDA quarterly reports