Fusion Startup Helion Hits Blistering Temps As It Races Toward 2028 Deadline
Helion fusion reactor hits 150 million degrees Celsius in milestone test advancing toward commercial power delivery by 2028.
Matilda
Fusion Startup Helion Hits Blistering Temps As It Races Toward 2028 Deadline
Helion Fusion Breakthrough Nears 2028 Power Goal Helion Energy has achieved a critical milestone in its race to commercialize fusion power, with its Polaris prototype reactor reaching plasma temperatures of 150 million degrees Celsius. The Everett, Washington-based startup confirmed the achievement represents three-quarters of the heat required for its planned commercial operation. Unlike competitors targeting the early 2030s, Helion remains committed to delivering electricity to Microsoft by 2028 under a landmark power purchase agreement—a timeline that demands unprecedented technical execution. Credit: Helion The Temperature Milestone Explained Reaching 150 million degrees Celsius places Helion's plasma at ten times the core temperature of our sun. This blistering heat is essential for forcing atomic nuclei close enough together to overcome natural repulsion and fuse, releasing massive energy. The milestone matters because Helion's unique reactor design requires significantly hi…
