The Planning Inspectorate has accepted EDF Energy's application for a new nuclear power station on the Suffolk coast after eight years of public consultation.
The 14 billion pound proposal for Sizewell C has been formally submitted and will now go to further public examination.
But campaigners against the project are calling for a pause while lockdown continues. Stop Sizewell C says the development would cause harm to protected habitats and tourism.
EDF says it will create jobs for decades to come and provide enough low carbon power for six million homes.