British inertial fusion energy developer First Light Fusion has presented the first commercially viable, reactor-compatible path to 'high gain' fusion, which it says would drastically reduce the cost ...

First Light Fusion, the U.K.'s only inertial fusion company, has devised a way to create "high gain" inertial fusion for the first time. Fusion energy is generated when two lighter atoms, like helium, ...

Fusion startups have raised $7.1 billion to date, with the majority of it going to a handful of companies.