Helion Achieves 150 Million Degrees in Fusion Prototype

Helion Achieves 150 Million Degrees in Fusion Prototype

Helion’s Polaris reactor reaches 150 million °C plasma temperature. Three-quarters of target needed for commercial fusion plant. Uses deuterium-tritium fuel, first to do so. Heat o

Nuclear & Fusion · February 13, 2026 (updated February 25, 2026) · 1 min · 147 words