Fusion Goes Commercial
Helion achieves D-T fusion privately. SPARC is 75% built. Over $13B in private fusion investment.
Explore this event on the interactive timeline →In February 2026, Helion Energy's Polaris prototype became the first privately developed machine to demonstrate deuterium-tritium fusion, reaching plasma temperatures of 150 million °C. Simultaneously, Commonwealth Fusion Systems' SPARC tokamak in Massachusetts reached 75% construction completion, with first plasma targeted for 2027.
Key Numbers
- Helion Plasma Temp
- 150,000,000 °C
- SPARC Construction
- 75% Complete
- Sector Investment
- $13B+
Verified Facts
- Helion's Polaris achieved 150 million °C plasma temperatures, exceeding the 100M °C threshold for commercial viability.
- Helion broke ground on "Orion," a 50 MW commercial fusion plant in Washington state (July 2025), targeting 2028 operations for Microsoft data centers.
- CFS SPARC received its vacuum vessel halves and began installing 18 high-temperature superconducting toroidal field magnets in spring 2026.
- Global private fusion investment surpassed $13 billion by early 2026.