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The plant at Wylfa, on the Welsh island's northern coast, will have the UK's first three small modular reactors (SMR), although the site could potentially hold up to eight. Work is due to start next year with the aim of generating power by the mid 2030s. Prime Minister Sir Keir Starmer said Britain was once a world leader in nuclear power but "years of neglect and inertia has meant places like Anglesey have been let down and left behind. Today, that changes." The project, which could power about three million homes, will be built by publicly owned Great British Energy-Nuclear and is backed by a PS2.5bn investment from the UK government. Visiting a further education college in north Wales on Thursday, Sir Keir said the development would bring jobs for "decades to come" and that work would begin "virtually straight away". Wales' First Minister Eluned Morgan, who said she had been "pressing the case at every opportunity for Wylfa's incredible benefits". SMRs work similarly to large reactors, using a nuclear reaction to generate heat that produces electricity - but are a fraction of the size, with about a third of the generating output. Ed Miliband, Secretary of State for Energy and Climate Change, called the announcement "exciting" and said Britain is in the race for new reactors. Speaking on BBC Radio Wales Breakfast, Miliband added they hope to "work with local colleges to make sure that there are local skills providers, skills training opportunities, so local people get these jobs". [grey-place]Rolls-Royce An computer generated artists impression of the what the site will look like. A silver building surrounded by green area, trees and a car park which sits in front of it. Rolls-Royce Simon Bowen, chair of Great British Energy-Nuclear, hailed an "historic moment for the UK". Llinos Medi, the MP for Ynys Mon, the Welsh name for Anglesey, said it was a "game-changer" for the area "but only if local people see real and lasting benefits". Mims Davies MP, the Shadow Secretary of State for Wales, said it will bring much-needed jobs and investment but "the current plan will only generate a fraction of the power that a Gigawatt-powered plant would". Anthony Slaughter, leader of Wales Green Party, said the project was "an expensive distraction from the clean, fast and cheap renewables already available to us". He added "a fast, ambitious roll-out of solar, wind and wave energy that will create jobs and cut energy bills" was needed. The Federation of Small Businesses (FSB) Wales said the plant would bring a "once in a generation" boost for jobs, supply chains and regional infrastructure. Great British Energy-Nuclear has also been tasked with identifying potential sites across the UK for another large-scale nuclear power plant, similar to those being built at Hinkley Point in Somerset and Sizewell in Suffolk, which can power the equivalent of six million homes. The company will report back by autumn 2026, officials said. It is not clear whether the SMR plans, which are smaller and more straightforward to build, rule Wylfa out after it was designated the preferred location in 2024 by the previous UK Conservative government. [grey-place]Map showing the location of nuclear power stations in the UK. The operational reactors are: Torness on the east coast of Scotland, Hartlepool, Sizewell and the Heysham 1 and 2 reactors. Three reactors are being defuelled: Hunterston on the west coast of Scotland, Hinkley Point and Dungeness. The map shows the location of the newly-announced reactor at Wylfa on the north coast of Wales. 'Nuclear equivalent of an Ikea chair' Prof Simon Middleburgh, director of the Nuclear Futures Institute at Bangor University, said the SMRs would be "built in a modular manner in factories and shipped to the site to be put together a bit like an Ikea chair". There were "a few more hurdles to go through", he cautioned - from securing regulatory approval, building the factories required to construct the SMRs and training the workforce that will run them. Opponents of the project point to the fact that a long-term storage facility for the UK's nuclear waste is yet to be agreed upon and say investment in renewable energy schemes - wind, wave and tidal - is what Anglesey needs. Dylan Morgan, of the People Against Wylfa-B campaign group, said the proposed SMRs were "an unnecessarily big development of an unproven technology". The government sees them as a secure, reliable, affordable and low carbon energy system and is convinced that, with investment, SMRs will create thousands of jobs and boost manufacturing. Wylfa beat competition from a site at Oldbury in Gloucestershire, with the reactors designed by Rolls-Royce, subject to final contracts, which are expected later this year. [grey-place]PA Media Energy Secretary Ed Milliband, Chancellor of the Exchequer Rachel Reeves, Simon Bowen, Interim Chair for Great British Energy - Nuclear (GBE-N), Prime Minister Sir Keir Starmer, First Minister of Wales Eluned Morgan and Science and Technology Secretary Liz Kendall look at maps of the Wylfa plant during a visit to an engineering workshop at Coleg Menai in Anglesey. The UK's first small modular reactor (SMR) nuclear power station will be built at Wylfa in North Wales by publicly owned Great British Energy-Nuclear and is backed by PS2.5 billion investment from the Government. PA Media Ministers saw maps of the Wylfa plant during a visit to Coleg Menai on Anglesey The UK government said the plant would help provide energy independence. The decision to opt for small modular reactors at Wylfa was criticised by the US ambassador Warren Stephens, who said he was "extremely disappointed". He had urged ministers to commit to a large-scale plant, with US firm Westinghouse having reportedly presented plans for a new gigawatt station at the site. Downing Street said the decision to build the power station in Wales "doesn't close the door" to a US manufacturer working on a future project. [grey-place]Graphic showing the difference between SMRs and large nuclear reactors The old nuclear power plant at Wylfa was switched off in 2015 and previous plans for a large-scale replacement fell through in 2021. The company behind the scheme - the Japanese industrial giant Hitachi - cited spiralling costs and a failure to reach agreement with the UK government over funding. There is a huge political component to the announcement, with Labour's leadership in Westminster keen to show it means business on big investment in infrastructure projects. In Wales, the first minister has been pushing hard for Wylfa - and the announcement comes six months before the Senedd election. Eluned Morgan has been trying to strike a balance: differentiating the Welsh party from UK Labour, while pushing for extra funding, further devolution of powers and big investment announcements from her UK colleagues. She has certainly got the latter, although plenty of other issues such as reform to how Wales is funded and devolution of the Crown Estate - which owns much of the Welsh coastline and is vital to future wind power - remain unresolved. More top stories Injured motorcyclists rescued after bike sent SOS alert Charlotte Church's son makes acting debut in short film City's overnight visitors could face PS1.30 per night tax [grey-place]Thin, green banner promoting the Future Earth newsletter with text saying, "The world's biggest climate news in your inbox every week". There is also a graphic of an iceberg overlaid with a green circular pattern. Sign up for our Future Earth newsletter to keep up with the latest climate and environment stories with the BBC's Justin Rowlatt. Outside the UK? Sign up to our international newsletter here. 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