What is TerraPower?
Founded by Bill Gates, TerraPower is a nuclear innovation firm dedicated to the development of safe, affordable, and sustainable energy solutions. The company's core value proposition centers on its flagship Natrium reactor, which integrates advanced sodium-cooled fast reactor technology with molten salt energy storage. This design addresses the inherent intermittency of renewable energy sources, providing a reliable, grid-scale baseload power supply. By focusing on high-efficiency thermal management and enhanced safety protocols, TerraPower is positioned at the intersection of deep-tech engineering and global climate policy, aiming to decarbonize the energy grid while maintaining economic viability.
How much funding has TerraPower raised?
TerraPower has raised a total of $1.4B across 4 funding rounds:
Angel/Seed
$10M
Angel/Seed
$35M
Private Equity
$750M
Other Financing Round
$650M
Angel/Seed (2008): $10M with participation from Microsoft
Angel/Seed (2010): $35M led by Charles River and Khosla Ventures
Private Equity (2022): $750M supported by Sk and SK Innovation
Other Financing Round (2025): $650M featuring Bill & Melinda Gates Foundation, NVentures, and HD Hyundai
Key Investors in TerraPower
Bill & Melinda Gates Foundation
A global philanthropic organization focused on improving healthcare, reducing extreme poverty, and expanding educational opportunities, often supporting high-impact scientific research.
NVentures
An upstream exploration firm providing technical and commercial intelligence for the energy industry, with a specialized focus on the energy transition and hydrogen projects.
HD Hyundai
A South Korean heavy industrial conglomerate specializing in shipbuilding, robotics, and eco-friendly energy solutions, driving digital and environmental transformation.
What's next for TerraPower?
With the recent capital injection, TerraPower is poised to accelerate the commercialization of its reactor designs and expand its manufacturing footprint. The strategic alignment with global industrial conglomerates suggests a focus on scaling supply chain capabilities and navigating the complex regulatory landscapes required for nuclear deployment. As the company transitions from prototype validation to operational implementation, the focus will likely shift toward securing long-term utility partnerships and optimizing the Natrium reactor for diverse geographic markets. This phase of growth is critical for establishing TerraPower as a cornerstone of the future energy infrastructure, ensuring that its technological advancements translate into tangible, grid-ready power solutions.
See full TerraPower company page
