Tim De Chant
By Tim
See all 4Helion’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.
Zap Energy’s Fuze-3 hits record 232,000+ psi and 21M°F in sheared-flow Z‑pinch tests, guiding demo-plant design
Zap Energy's Fuze-3 device achieved record plasma pressures for its sheared-flow-stabilized Z-pinch approach, compressing plasma to over 232,000 psi and heating it above 21 million °F, data that will inform future demonstration plant designs though the company says pressure needs another ~10× increase to reach its stated goals.
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.
