New and recently funded Energy Startups
1
Country: China
FusionAlpha develops AI software simulator designed to help developers test fusion reactor designs on computers before committing to expensive physical experiments
FusionAlpha develops AI software simulator designed to help developers test fusion reactor designs on computers before committing to expensive physical experiments
2
Country: China | Funding: $44.6M
Dongxi is focuses on the commercial exploration of laser inertial confinement fusion. It's developing high-energy laser drivers, target engineering, experimental diagnostics, simulation, system integration, and AI-assisted research. It aims to build repeatable engineering capabilities as laser fusion moves from scientific proof to engineering validation.
Dongxi is focuses on the commercial exploration of laser inertial confinement fusion. It's developing high-energy laser drivers, target engineering, experimental diagnostics, simulation, system integration, and AI-assisted research. It aims to build repeatable engineering capabilities as laser fusion moves from scientific proof to engineering validation.
3
Country: China | Funding: $100M
SunUp Fusion is constructing its first-generation experimental device, compact high-field tokamak codenamed "Morning Light". The startup is pursuing a differentiated technological path centered on a Deuterium-Helium-3 (D-He3) fuel cycle. Its compact D-He3 power plants are designed for flexible deployment near urban centers or data hubs. This strategy would allow them to work in tandem with larger, remote D-T facilities to form an integrated and versatile energy grid.
SunUp Fusion is constructing its first-generation experimental device, compact high-field tokamak codenamed "Morning Light". The startup is pursuing a differentiated technological path centered on a Deuterium-Helium-3 (D-He3) fuel cycle. Its compact D-He3 power plants are designed for flexible deployment near urban centers or data hubs. This strategy would allow them to work in tandem with larger, remote D-T facilities to form an integrated and versatile energy grid.
4
Country: China | Funding: CN¥2.4B
Startorus Fusion is a commercial nuclear fusion company, building spherical tokamak device SUNIST-2 in collaboration with Tsinghua University. The spherical tokamak, as a compact tokamak device, is more economical in terms of funding and space utilization. Due to its design, it has a higher ratio of plasma pressure to magnetic field pressure. The company already completed its first operational run, achieving a plasma current of 100 kiloamperes. It is the strongest magnetic field and highest-performance spherical tokamak in China. The startup is targeting technical verification by 2028 and pilot plant by 2032.
Startorus Fusion is a commercial nuclear fusion company, building spherical tokamak device SUNIST-2 in collaboration with Tsinghua University. The spherical tokamak, as a compact tokamak device, is more economical in terms of funding and space utilization. Due to its design, it has a higher ratio of plasma pressure to magnetic field pressure. The company already completed its first operational run, achieving a plasma current of 100 kiloamperes. It is the strongest magnetic field and highest-performance spherical tokamak in China. The startup is targeting technical verification by 2028 and pilot plant by 2032.
5
Country: UK
Oxford Sigma develops and supplies materials technology and engineering solutions for fusion energy. It develops materials and neutron technology for fusion reactors, including tungsten alloys and lithium ceramics for tritium breeding. The startup works with UKAEA on the STEP programme.
Oxford Sigma develops and supplies materials technology and engineering solutions for fusion energy. It develops materials and neutron technology for fusion reactors, including tungsten alloys and lithium ceramics for tritium breeding. The startup works with UKAEA on the STEP programme.
6
Country: UK | Funding: £27.5M
Astral Systems has built a compact fusion device that produces medical radioisotopes on demand, aimed at hospitals and researchers who currently rely on a handful of ageing reactors worldwide. Its SIC codes span basic pharmaceutical manufacturing and irradiation equipment, categories that miss its fusion technology entirely. Startups's clients include UKAEA and the National Nuclear Laboratory.
Astral Systems has built a compact fusion device that produces medical radioisotopes on demand, aimed at hospitals and researchers who currently rely on a handful of ageing reactors worldwide. Its SIC codes span basic pharmaceutical manufacturing and irradiation equipment, categories that miss its fusion technology entirely. Startups's clients include UKAEA and the National Nuclear Laboratory.
7
Country: UK
digiLab is developing AI Platform - Uncertainty Engine - that allows to model plasma turbulence by building fast, surrogate models of complex simulations. It helps to explore advanced physics and accelerate fusion research confidently. digiLab is working closely in partnership with the UK Atomic Energy Authority (UKAEA) to make significant advancements in fusion energy research and development. By combining digiLab's expertise in probabilistic AI with UKAEA's world-leading fusion knowledge, this collaboration is accelerating the path to viable fusion energy.
digiLab is developing AI Platform - Uncertainty Engine - that allows to model plasma turbulence by building fast, surrogate models of complex simulations. It helps to explore advanced physics and accelerate fusion research confidently. digiLab is working closely in partnership with the UK Atomic Energy Authority (UKAEA) to make significant advancements in fusion energy research and development. By combining digiLab's expertise in probabilistic AI with UKAEA's world-leading fusion knowledge, this collaboration is accelerating the path to viable fusion energy.
8
Country: UK
UK Fusion Energy is leading the delivery of the STEP Fusion (Spherical Tokamak for Energy Production) - UK’s government-funded industry partnership program designed to scale a consistent fusion energy supply. It develops the prototype fusion energy plant at West Burton. The program coordinates plant design, engineering, technology development, site preparation, and industrial partnerships. Its objectives include demonstrating net energy production, fuel self-sufficiency, and a route toward commercial fusion power plants.
UK Fusion Energy is leading the delivery of the STEP Fusion (Spherical Tokamak for Energy Production) - UK’s government-funded industry partnership program designed to scale a consistent fusion energy supply. It develops the prototype fusion energy plant at West Burton. The program coordinates plant design, engineering, technology development, site preparation, and industrial partnerships. Its objectives include demonstrating net energy production, fuel self-sufficiency, and a route toward commercial fusion power plants.
9
Country: Canada
Stellarex is a fusion energy development firm that uses a simplified Stellarator and milestone‑driven demonstrators to validate systems integration, de‑risk scale‑up, and execute a staged technology roadmap from prototypes through demonstration devices to commercial fusion power plants. It's running two device programs - SXA (intermediate prototype) and SX0 (net‑energy demonstrator) - run in parallel from 2026 through 2032, anchored by the launch of the Centre for Fusion Energy.
Stellarex is a fusion energy development firm that uses a simplified Stellarator and milestone‑driven demonstrators to validate systems integration, de‑risk scale‑up, and execute a staged technology roadmap from prototypes through demonstration devices to commercial fusion power plants. It's running two device programs - SXA (intermediate prototype) and SX0 (net‑energy demonstrator) - run in parallel from 2026 through 2032, anchored by the launch of the Centre for Fusion Energy.
10
Country: UK
Fusion Reactors is developing a fusion reactor to deliver electricity to the grid. With experience both in the state sector (JET - the premier fusion experiment of the world) and the private sector, Fusion Reactors has the knowledge and experience to design, build, run and evolve multiple fusion reactor designs.
Fusion Reactors is developing a fusion reactor to deliver electricity to the grid. With experience both in the state sector (JET - the premier fusion experiment of the world) and the private sector, Fusion Reactors has the knowledge and experience to design, build, run and evolve multiple fusion reactor designs.
