Thea Energy focuses on advancing fusion technology within the energy sector. The company specializes in developing stellarator systems for stable, steady-state magnetic confinement fusion, aiming to provide a limitless source of zero-emission energy. Its proprietary technology includes a planar coil stellarator design that simplifies the traditionally complex 3D magnet coils and its Eos neutron source stellarator is designed for commercial isotope production, including tritium. It was formerly known as Princeton Stellarators. It was founded in 2022 and is based in Princeton, New Jersey.