Helion funding round grows to $500M amid uncertainty over fusion startup’s Microsoft  timeline

An aerial view of Orion, Helion Energy’s planned fusion plant being built in Malaga, Wash. (Helion Photo) Helion Energy on Tuesday said that it added $35 million to a funding round initially announced in June. The Everett, Wash.-based fusion company originally shared news of a $465 million Series G round.