The Earthineering Company

The Earthineering Company is a Claremont, California-based nuclear energy startup founded in 2020 with a bold and differentiated mission: to bring the power and reliability of nuclear energy to every industry beyond electricity. While most nuclear companies focus on electricity generation, Earthineering is developing what it claims will be the world's first nuclear reactor designed from the ground up to deliver high-temperature industrial process heat. This heat can drive the chemical processes that underpin manufacturing, synthetic fuel production, critical mineral processing, and more - sectors that collectively consume the majority of global energy but have been largely untouched by nuclear power.

The company's reactor is designed to use TRISO (TRi-structural ISOtropic) fuel, a next-generation uranium fuel form that offers enhanced structural safety, high operating temperatures, and simpler refueling compared to conventional nuclear fuel. By leveraging TRISO's properties, Earthineering aims to deliver nuclear heat that is cheaper, cleaner, and more reliable than fossil fuel-based industrial heating. Key target applications include rare earth element processing (a critical national security need given US dependence on foreign supply chains), synthetic fuel production, and potentially even extraterrestrial resource processing. The company has also engaged with the ARPA-E community and is tracking regulatory developments like New Jersey's repeal of its nuclear moratorium as signals of a broader nuclear renaissance.

Earthineering is strategically positioned at the intersection of US energy security, industrial reindustrialization, and advanced nuclear technology. By enabling domestic processing of rare earth elements and critical minerals using clean nuclear heat, the company directly addresses vulnerabilities in the US energy and defense supply chains. Its small, modular reactor approach is designed to be more deployable than traditional large-scale nuclear plants, making it relevant to a wide range of industrial customers. Though early-stage with a small team, the company is actively engaged in the deep-tech and defense innovation ecosystem and has teased major upcoming announcements from its CEO.