Polaris

Overview

7th-generation fusion prototype designed to demonstrate electricity production from fusion using Helion's pulsed magneto-inertial architecture and direct electricity recapture.

Operating in Everett, WA, since late 2024. Achieved 150 million degrees C and first private D-T fusion in February 2026, and Helion is now working to ramp repetition rate from one pulse every ~10 minutes toward 1 Hz operation and demonstrate electricity production.

Key Specs