Commonwealth Fusion Systems, a Massachusetts-based fusion energy company, plans to build the world’s first grid-scale commercial fusion power plant in Chesterfield County, Gov. Glenn Youngkin ...

Helion says its seventh-generation Polaris machine has heated plasma to 150 million degrees Celsius using deuterium-tritium fuel, a milestone the company is pitching as a turning point in the race to ...

The energy source that powers the stars was first demonstrated in an experiment in 1934. Ever since then the promise of clean, virtually limitless energy has been greatly anticipated with commercial ...