GMB has welcomed the construction the UK's first three small modular reactors (SMR) at Ynys Môn in Wales.
But the union said the site - known as Wylfa in English - was ready for a full scale nuclear reactor.
Charlotte Brumpton-Childs, GMB National Officer, said:
“GMB believes Wylfa was ready for - and deserved - a large scale reactor, but we welcome the reintroduction of nuclear energy into Anglesey
“We look forward to working with Rolls Royce and the Government to deliver trade union organised construction of the Small Modular Reactors.
“The study into sites for large gigawatt reactors is good news on paper - but the proof will be in the pudding and we will hold Ministers’ to account on that pledge.”
