Bill Gates is making waves in clean energy again as his nuclear startup, TerraPower, secures $650 million in funding, with tech powerhouse Nvidia as a key investor. Announced on June 18, 2025, this investment fuels TerraPower’s mission to revolutionize nuclear energy and power the AI-driven future. Here’s what you need to know about this game-changing development.
What is TerraPower?
Founded by Bill Gates in 2006, TerraPower is a leader in advanced nuclear technology. Its Natrium reactor, a sodium-cooled fast reactor with molten salt energy storage, promises clean, reliable, and affordable power. The small modular reactor (SMR) design enhances safety and scalability, positioning TerraPower at the forefront of the carbon-free energy movement.
Inside the $650M Funding Round
The $650 million raise pushes TerraPower’s total private funding past $2 billion, solidifying its role in nuclear innovation. Key investors include:
- Nvidia’s NVentures: Betting on nuclear to meet AI data center energy demands.
- Bill Gates: The Microsoft co-founder remains a steadfast supporter.
- HD Hyundai: South Korea’s shipbuilding giant sees global potential in SMRs.
The funds will fast-track TerraPower’s Natrium reactor project in Kemmerer, Wyoming, built on a former coal plant site.
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Why Nvidia’s Role is a Big Deal
Nvidia’s investment highlights the link between AI and nuclear energy. With data centers driving up electricity use, nuclear power offers a sustainable solution. “Nuclear is a reliable partner for AI’s energy needs,” said Mohamed Siddeek of NVentures. TerraPower’s Natrium reactor aligns with this vision, especially as global SMR capacity grew 42% in Q1 2025 (Wood Mackenzie).
Natrium Reactor: Powering Tomorrow
The Natrium reactor is a 345-megawatt facility designed for carbon-free energy. Its standout features include:
- Sodium-cooled design: Safer and more efficient than traditional reactors.
- Molten salt storage: Enables flexible energy output for grid reliability.
- Coal-to-nuclear shift: Revitalizes local economies while cutting emissions.
Construction kicked off in 2024, with Nuclear Regulatory Commission (NRC) approval expected by 2026. This could make Natrium the first advanced nuclear plant in the U.S.
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Nuclear Energy’s Comeback
TerraPower’s success reflects a nuclear energy renaissance, fueled by:
- Surging energy needs: AI, EVs, and industry demand reliable power.
- U.S. policy support: Bipartisan backing for nuclear innovation.
- Global SMR race: Nations like South Korea and China are investing heavily.
Competitors like Oklo and NuScale are also gaining traction, signaling a bright future for nuclear.

What’s Next for Bill Gates’ TerraPower?
With new funding, TerraPower plans to:
- Complete the Wyoming Natrium project by the early 2030s.
- Expand SMR deployments in the U.S. and abroad.
- Power AI data centers with clean energy, partnering with tech leaders like Nvidia.
This could reshape the global energy landscape and advance the fight against climate change.
Why You Should Care
Bill Gates’ TerraPower is more than a nuclear startup—it’s a bold bet on a sustainable future. For tech fans, investors, or anyone passionate about the environment, this story shows how innovation can tackle today’s biggest challenges.
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