Thea Energy previews Helios, its pixel-inspired fusion power plant

Thea Energy is developing a novel fusion power plant design called Helios, which aims to overcome key challenges in fusion energy production by using a unique approach to magnetic confinement. Unlike traditional stellarators that rely on complex, irregularly shaped magnets difficult to mass-produce, Thea’s design employs arrays of small, identical superconducting magnets controlled individually by specialized software. This "virtual" stellarator concept allows the company to rapidly iterate on magnet designs and use software to compensate for manufacturing and installation imperfections, potentially reducing the high costs and precision demands that have hindered fusion power development. Thea’s control system, based on electromagnetic physics and enhanced with AI through reinforcement learning, has demonstrated resilience even when magnets were deliberately misaligned or made from defective materials. This flexibility could enable the construction of fusion reactors without the extreme precision typically required, lowering barriers to commercialization. The company has shared detailed physics and design information publicly and is working toward building a working prototype. If successful, Thea’s approach could significantly reduce the