Helion raises $425M, valued at $5.245B, to accelerate Polaris fusion reactor and meet Microsoft 2028 power deal

Helion Energy raised $425 million in a Series F that values the company at $5.245 billion and will fund in-house manufacturing as it advances Polaris, its seventh prototype, toward producing electricity and meeting a 2028 contract to supply Microsoft.

DDavid Kirtley HHelion Energy