Helion’s Polaris Prototype Reaches 150 Million °C Using Deuterium-Tritium as Company Pursues 2028 Power Contract with Microsoft

Helion says its Polaris prototype reached 150 million °C and produced increased fusion heat using deuterium-tritium fuel, a milestone the company calls progress toward its commercial Orion reactor. Helion aims to sell electricity to Microsoft from a larger reactor by 2028 and has raised substantial investor funding amid a crowded commercial fusion race.

DDavid Kirtley HHelion Energy