Helion, the fusion startup backed by Sam Altman, announced on Thursday that it had raised $465 million in a new funding round that values the company at $15.5 billion. The cash infusion lands as ...

Challenges, breakthroughs and big ideas in the race to protect our planet. SEE MORE by Lisa Stiffler on May 8, 2026 at 10:14 am May 29, 2026 at 1:35 pm Helion Energy is building Tiny Merge, a fusion ...

A Massachusetts-based fusion company took another step this week in its race to become the first to get the same power fueling the sun and stars onto the US electrical grid. Commonwealth Fusion ...

Nobody said building a fusion power plant would be easy. Physicists and engineers have been working for decades to crack the problem. But over the last year or so, fusion startup Zap Energy took a ...

On Tuesday a fusion energy start-up announced that it has applied to join a U.S. power grid—a first that could one day see households and businesses powered by nuclear fusion. Commonwealth Fusion ...

NEW YORK, April 21 (Reuters) - Construction of what could be the world's first commercial plant to generate power with fusion, the ‌process that powers the stars, is set to start in the U.S. in 2027, ...

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There is a well-known saying among nuclear physicists that commercial nuclear fusion is about ten years away – and always will be. But a series of announcements by American startups and state-backed ...

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Researchers using China’s “artificial sun” fusion reactor have broken through a long-standing density barrier in fusion plasma. The experiment confirmed that plasma can remain stable even at extreme ...