Microsoft-backed nuclear fusion company Helion has begun work on its first fusion power plant in Chelan County in the US state of Washington. The Orion plant is set to deliver power to Microsoft data centres in the state by 2028, should development remain on track. Microsoft signed what it said was the world’s first power purchase agreement (PPA) for nuclear fusion in May 2023, with the company expected to offtake up to 50 MW of capacity following a one-year ramp-up period. Privately owned Helio...