Office for Nuclear Regulation

Category: Horizon Nuclear Power

New GDA guidance for Requesting Parties

October 29, 2019 - Generic Design Assessment (GDA) guidance published


New nuclear site licence application received

April 4, 2017 - ONR can confirm new nuclear site licence application received


Cais newydd am drwydded safle niwclear wedi’i dderbyn

April 4, 2017 - Cais newydd am drwydded safle niwclear wedi’i dderbyn


FOI – ONR employees previously employed by Hitachi, General Electric or Horizon Nuclear Power

April 7, 2016 -


Wylfa Newydd nuclear reactor licensing – current status update June 2015

June 15, 2015 -


Official start of generic design assessment on new reactor

April 9, 2013 - Charging agreement signed on new reactor design assessment.


Regulators to assess new nuclear reactor design

January 15, 2013 - ONR and the Environment Agency receive request to start assessment of new reactor design