German fusion startup Gauss Fusion closes seed round, targets $150M Series A
What's the deal? Munich-based Gauss Fusion has closed its seed-to-A financing round and begun raising a Series A to develop core technologies for stellarator fusion power plants. The company did not disclose the amount or name investors in the closed round, saying it drew founders, industry partners, and existing and new shareholders.
What's the company building? Gauss Fusion is developing a modular stellarator fusion power plant designed for maintainability, series manufacturing, and long-term economics. It centres on three proprietary technologies — high-field magnets, a solid breeding blanket, and a plasma-exhaust system — all part of its GIGA power-plant concept.
What sets it apart? While many fusion projects first chase scientific proof of net energy gain, Gauss is focused on industrial viability. "Our goal goes beyond demonstrating scientific net energy gain," said chief executive officer Uwe Bau (translated from German). "We are developing the technical and industrial foundations for power plants that can be reliably built, maintained, and operated over decades."
What's the money for? The Series A capital is earmarked for engineering, prototypes, and validation of critical components, Gauss said. The company reports strong investor interest but has not named a target amount or a timeline; reporting from Axios puts the raise at $150 million as it eyes US expansion.
Why now? Fusion funding is surging. The Fusion Industry Association reported a record $4.48 billion raised globally in the 12 months to July 2026, with Commonwealth Fusion Systems pulling in $1 billion and Type One Energy announcing a $200 million Series B.
The signal: Gauss is courting capital in a crowded, well-funded field. Its significance will hinge on how much it secures and which engineering milestones the financing supports — a long-horizon industrial bet rather than near-term electricity.
Read more: munich-startup.de, Axios
Image credit: Gauss Fusion
