# Endurance Energy

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/endurance-energy-2

- Industry: Renewable Energy
- Headquarters: Seattle, US
- Website: www.enduranceenergy.com/
- Total disclosed funding: $108M
- Latest round: Series A (Oct 19, 2026)
- Investors on record: 8

## About

Based in the US, Endurance Energy is a renewable energy company focused on the development of offshore geothermal energy solutions through innovative seafloor hydrothermal generators.Endurance Energy, founded in 2025 and led by founder Andrew Redd (CEO), specializes in harnessing geothermal energy from volcanic activity to produce renewable power. The company is headquartered in Seattle, US. In June 2026, Endurance Energy raised USD 54 million in series A funding led by Founders Fund. with participation from Voyager Ventures, Riot Ventures, Point72, First Round Capital, Felicis Ventures, Construct Capital, and Ascend. Endurance Energy specializes in the development and deployment of offshore geothermal energy solutions, primarily through its innovative seafloor hydrothermal generators. These systems harness the Earth’s internal heat generated by volcanic activity along tectonic plate boundaries, specifically within the Pacific Ring of Fire. By providing gigawatts of baseload power, these generators are designed to meet the energy demands of various end users, including small island nations, industrial sites, and hyperscale data centers. The company targets markets across the globe, emphasizing regions heavily reliant on energy imports, where traditional fossil fuel sources are both economically burdensome and environmentally detrimental. Endurance Energy’s offerings not only aim to enhance energy affordability and security but also address the urgent need for sustainable power solutions in regions facing significant energy challenges.Endurance Energy generates revenue through direct business-to-business transactions with clients in energy-intensive sectors, such as industrial manufacturing and technology firms. The transaction structure typically involves long-term partnerships, where clients secure access to the company's renewable energy solutions, facilitating their transition away from fossil fuels. Clients may enter into agreements that include standardized pricing plans based on energy consumption levels, ensuring predictable costs for electricity supplied by the seafloor hydrothermal systems. The company’s flagship technology, which is designed for rapid deployment and consistent energy production, positions it as a competitive player in the renewable energy landscape. By capitalizing on the growing demand for sustainable energy, Endurance Energy is poised to contribute significantly to the energy market while fostering environmentally responsible practices among its diverse client base.Endurance Energy plans to utilize the recent USD 25 mn funding to enhance its technology and expand its reach into additional markets. The company is focused on developing new products, particularly advanced seafloor hydrothermal systems, aimed for launch in late 2027. Furthermore, it intends to penetrate emerging markets in Southeast Asia and the Caribbean by 2028, where energy demands are rising significantly, and dependency on fossil fuels remains high.

## Funding rounds

- Series A, Oct 19, 2026, $54M — Founders Fund
- Series A, Jun 11, 2026, $54M — Founders Fund, First Round Capital, Felicis Ventures, Point72, Riot Ventures, Ascend, Construct Capital, Voyager Ventures

## Investors

- Founders Fund (https://capitalatlas.ai/funds/founders-fund) — Series A
- First Round Capital (https://capitalatlas.ai/funds/first-round-capital) — Series A
- Felicis Ventures (https://capitalatlas.ai/funds/felicis-ventures) — Series A
- Point72 (https://capitalatlas.ai/funds/point72) — Series A
- Riot Ventures (https://capitalatlas.ai/funds/riot-ventures) — Series A
- Ascend — Series A
- Construct Capital (https://capitalatlas.ai/funds/construct-capital) — Series A
- Voyager Ventures — Series A