TerraPower is a technology company.
TerraPower has raised $1.5B across 2 funding rounds.
TerraPower has raised $1.5B in total across 2 funding rounds.
TerraPower has raised $1.5B in total across 2 funding rounds.
TerraPower's investors include CRV.
# TerraPower: Advanced Nuclear Innovation for the Clean Energy Transition
TerraPower is a nuclear technology company developing next-generation advanced reactors designed to provide reliable, carbon-free baseload power while integrating seamlessly with renewable energy systems.[1] Founded in 2006 by Bill Gates and headquartered in Bellevue, Washington, TerraPower addresses a critical gap in the global energy landscape: the need for scalable, safe nuclear solutions that can support electrification, industrial decarbonization, and energy-intensive applications like data centers and AI infrastructure.[1]
The company's flagship product is the Natrium® reactor, a sodium-cooled fast reactor paired with molten salt heat storage that can boost output from 345 MWe to 500 MWe, enabling flexible grid support alongside renewables.[2][3] TerraPower is also advancing Molten Chloride Fast Reactor (MCFR) technology to decarbonize industrial processes beyond electricity generation.[3] The company operates at the intersection of climate action, energy security, and technological innovation—positioning itself as a key player in what many call the "nuclear renaissance."
Bill Gates founded TerraPower in 2006 with a team of innovators specifically to tackle climate change and global energy challenges through advanced nuclear science.[1] Gates, who has spent over two decades studying climate solutions and investing billions through his foundation and Breakthrough Energy platform, recognized that traditional nuclear technology alone couldn't meet future energy demands.[7] Rather than remaining a think tank, TerraPower evolved into an engineering company with operational ambitions.
The company's trajectory reflects both technological progress and geopolitical realities. In 2015, TerraPower signed an agreement with China's state-owned nuclear corporation to build a prototype reactor, but the project was abandoned in 2019 due to U.S. technology transfer restrictions under the Trump administration.[2] This setback redirected the company's focus toward domestic deployment. By 2024, TerraPower selected Kemmerer, Wyoming—near a retiring coal facility—as the site for its first commercial Natrium reactor, with groundbreaking beginning in June 2024.[2][3]
TerraPower sits at the convergence of three powerful trends: the urgent need for decarbonization, the growing energy demands of AI and data centers, and renewed policy support for advanced nuclear energy.[1] Governments worldwide—including the U.S., Japan, and South Korea—are recognizing that renewables alone cannot reliably meet future electricity needs, creating a policy tailwind for companies like TerraPower.
The company's Wyoming project is emblematic of a broader shift: replacing retiring coal infrastructure with advanced nuclear capacity, preserving jobs and grid stability while eliminating carbon emissions.[6] This "just transition" narrative resonates with policymakers and communities, giving TerraPower political cover that earlier nuclear ventures lacked.
TerraPower's influence extends beyond its own reactors. By demonstrating that advanced nuclear can be built in the U.S. within a reasonable timeline and cost envelope, the company is validating an entire category of technology. Success here could unlock billions in follow-on investment and accelerate the deployment of competing advanced reactor designs from companies like X-energy and NuScale.
TerraPower is positioned to become the first commercial advanced reactor operator in the United States, with its Wyoming Natrium plant expected to begin operations by 2028.[4] If the project succeeds—delivering reliable power, managing costs, and proving grid integration—it will serve as a proof-of-concept that could reshape global energy infrastructure.
The company's next critical milestones are obtaining its NRC construction license in 2026 and managing the complex engineering and regulatory challenges of the 2026–2028 build phase. Success requires flawless execution; any major delays or cost overruns could dampen investor enthusiasm for advanced nuclear more broadly.
Looking ahead, TerraPower's influence will likely expand beyond electricity generation. Its MCFR research into industrial heat applications could unlock decarbonization pathways for cement, steel, and chemical manufacturing—sectors that renewables and batteries struggle to serve. International collaborations, particularly with Japan, suggest the company is building a global footprint.
The broader context matters: if climate policy remains supportive and energy demand from AI continues climbing, TerraPower could evolve from a single-project company into a multi-reactor operator and technology licensor. Conversely, if nuclear sentiment shifts or renewable costs drop faster than expected, the company's growth could plateau. For now, TerraPower represents the most concrete near-term bet on advanced nuclear's commercial viability in the West.
TerraPower has raised $1.5B across 2 funding rounds. Most recently, it raised $650.0M Venture Round in June 2025.
| Date | Round | Lead Investors | Other Investors |
|---|---|---|---|
| Jun 1, 2025 | $650.0M Venture Round | CRV | |
| Aug 1, 2022 | $830.0M Series A | CRV |