Nuclear technology company Newcleo has closed €300m (£258m) to fund the construction of its first nuclear sites in the UK and France.The London-headquartered startup says it plans to build its Generation IV nuclear reactors capable of extracting energy from nuclei in a renewable and safe way. The energy tech company will also use the capital for building its prototype reactors in the UK and France. The company is currently seeking government approval in both countries. Founded in 2021, the company has offices in London, Italy and France with more than 100 employees.In the UK Newcleo is growing its project management and technical functions teams.The firm was featured in UKTN’s roundup of London climate tech startups last November.In March Rolls-Royce received funding from the UK government for its space reactor, which could power the generation of water, oxygen and rocket fuels. Newcleo will use the funds for manufacturing nuclear fuel for its reactors from the waste made by traditional reactors. The recent geopolitical developments have undeniably reinforced the importance of nuclear in ensuring global energy security and the necessary step-change in decarbonisation efforts,” said Stefano Buono, chairman and CEO, Newcleo.