TerraPower
Updated: August 25, 2026
Founder Edward Jung
Country: USA | Funding: $1.5B (+)
Founded: 2006
Website: https://www.terrapower.com
TerraPower is developing compact modular nuclear reactors with a closed fuel cycle. Its goal is to make nuclear energy safer and cheaper, while also minimizing radioactive waste. It was co-founded by Bill Gates and partners with GE Hitachi Nuclear Energy. Its fast-neutron reactor Natrium has capacity up to 345 MW and includes molten salt heat storage system. Its advantage is its flexible power output, allowing it to respond to fluctuating demand when combined with renewable energy sources. To ramp quickly, it doesn’t increase or decrease the power output - the extra heat gets stored in a giant vat of molten salt. It uses liquid sodium as a coolant and highly enriched uranium (HALEU) as fuel (for now the company is experiencing supply issues). The demonstration reactor project is expected to be operational by 2030.
Founded: 2006
Website: https://www.terrapower.com
TerraPower is developing compact modular nuclear reactors with a closed fuel cycle. Its goal is to make nuclear energy safer and cheaper, while also minimizing radioactive waste. It was co-founded by Bill Gates and partners with GE Hitachi Nuclear Energy. Its fast-neutron reactor Natrium has capacity up to 345 MW and includes molten salt heat storage system. Its advantage is its flexible power output, allowing it to respond to fluctuating demand when combined with renewable energy sources. To ramp quickly, it doesn’t increase or decrease the power output - the extra heat gets stored in a giant vat of molten salt. It uses liquid sodium as a coolant and highly enriched uranium (HALEU) as fuel (for now the company is experiencing supply issues). The demonstration reactor project is expected to be operational by 2030.
