Nuclear

USA

Nuclear Fusion using revolutionary high temperature superconducting magnets developed in collaboration with MIT to build smaller and lower-cost tokamak fusion systems.

USA

The BWRX-300 is a 300 MWe small modular boiling water reactor designed for passive safety and significantly reduced capital cost — with agreements to build first units in Canada and the US.

Publicly Traded: NYSE. Code: GEV

USA

Helion Energy is a fusion startup pursuing field-reversed configuration plasma with direct electricity generation — and has a binding power purchase agreement with Microsoft targeting grid delivery by 2028.

USA

NuScale Power is an American SMR company and the first to receive NRC design approval for a small modular light-water reactor, targeting carbon-free baseload power for utilities, data centres, and industrial users.

Publicly Traded: NYSE. Code: SMR

USA

Oklo is developing Aurora — a sodium-cooled fast fission microreactor in 15-50MW sizes — designed for inherent safety, fuel recycling, and modular deployment at data centres and industrial sites, with Sam Altman as chairman and over 1,350MW in LOIs.

Publicly Traded: NYSE. Code: OKLO

USA

Type One is a fusion energy company developing a stellarator using high-temperature superconducting magnets and advanced manufacturing to build a commercially viable fusion power plant, with a licensing application already submitted for Tennessee's first commercial fusion project.

USA

Zap Energy is a Seattle-based fusion startup developing sheared-flow stabilised Z-pinch technology — a magnet-free approach to plasma confinement that could dramatically reduce the cost of fusion power.