The prototype machine with 150 million o C indoors is not a power plant, but it marks the boundary: that is quite hot, far ...

Fusion startup Helion is racing to complete a power plant for Microsoft by 2028. A fresh infusion of cash should help with ...

Fusion power startup Helion Energy Inc. has closed a $465 million funding round led by Thrive Capital. The Series G deal also ...

Beyond the massive curtains of its Everett, Wash., R&D facility, Helion is betting that a downsized testbed can answer key ...

Helion Energy, an Everett company seeking to produce commercial fusion energy, raised $465 million in a Series G funding ...

Microsoft-backed nuclear fusion company Helion has raised $465 million in its Series G investment round, led by Thrive ...

This company says its pulsed plasma machine will deliver electricity to the grid by 2029. Some physicists warn that its promises are outrunning what the technology has proved ...

Fusion energy group Helion said the company has completed a $465-million Series G investment round, increasing the Everett, Washington-based group’s valuation to $15.5 billion. Helion is among dozens ...

Oak Ridge's director of fusion energy explains why the global race to build the world’s first fusion plant still depends on ...

Government labs and more than 30 companies are racing to generate power from fusion, which could one day help the world slash ...

Helion Energy, a nuclear fusion startup backed by OpenAI’s Sam Altman, still has to prove it can produce electricity to serve data centers and other customers. But investors seem confident it can ...

In an outrageously audacious move, Washington-based fusion power startup Helion has signed the world's first fusion power supply deal, promising to deliver Microsoft at least 50 megawatts of clean ...