Seed · Climate tech

Apollo Atomics raises $31M seed round led by FCVC

The MIT spinout will use the seed financing to develop its factory-built reactor programme and advance demonstration and regulatory work.

FCVC led the financing, with participation from Y Combinator, Telesoft Partners, Alumni Ventures, Nucleation Capital and other investors. The company is using established pressurized-water-reactor technology as the basis for a smaller, repeatable manufacturing model.

Its announced programme includes an A-1 commercial demonstrator and larger reactor designs. Development still involves engineering, demonstration and regulatory milestones: the company planned to seek fuel-configuration authorization by the end of 2026. It also reported nonbinding letters of intent for 20 GW, a measure of customer interest rather than completed reactor sales.

Use of funds

Develop and demonstrate factory-built reactor systems

Advance manufacturing engineering and regulatory engagement

Funding history

Seed · This round$31M

Sources

  1. Apollo Atomics raises $31M seed round led by FCVCprnewswire.com · Aug 20, 2026