Focused Energy has raised an oversubscribed $240 million Series A round, according to TechCrunch, marking one of the largest early-stage fundraising events for a fusion power startup. The new round brings the company's total private capital raised to $300 million, and the startup has also secured $200 million in grants, collectively making it one of the most heavily funded fusion startups globally.
The Technology: Inertial Confinement Fusion
Germany-based Focused Energy is developing a reactor that uses lasers to compress fusion fuel, a technique known as inertial confinement. The lasers fire on a fuel target, compressing it to create conditions for fusion. When atoms inside the fuel fuse, they release significant energy. The company's design is based on the experiment at the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory in California — the first and only controlled fusion reaction to produce more energy than it consumed.
Debbie Callahan, who helped design the NIF's fuel target, joined Focused Energy in December as its chief strategy officer. At Focused Energy, she is working to simplify the fuel target. The NIF's target is complex and hard to manufacture, and the facility fires only about 400 shots per year. Focused Energy, by contrast, will need to fire 10 shots per second — approximately 864,000 shots per day.
One key simplification involves eliminating the hohlraum, a precision-manufactured gold cylinder that at the NIF converts laser energy into X-rays to compress the fuel pellet. Focused Energy's system uses a “direct drive” approach, where lasers directly compress the fuel pellet, boosting reactor efficiency and making power production easier.
Scaling Up: From NIF to Commercial Reactor
The company faces the enormous engineering challenge of scaling from the NIF's low shot rate to a commercial rhythm of millions of shots per day. Direct drive and a simplified target design are central to achieving that. The company did not disclose the specific laser technology or repetition rate of its prototype, but the goal of 10 shots per second underscores the leap required.
Investors and Competition
RWE, a German utility, was the main investor in the Series A round, Focused Energy told TechCrunch. Other participants included the German Federal Agency for Breakthrough Innovation (SPRIND), Prime Movers Lab, and the European Innovation Council Fund.
The fusion industry has attracted significant capital in 2026. Competitors include:
- Thea Energy — raised $100 million for its pixel-inspired fusion reactor.
- Inertia Enterprises — raised a $450 million Series A in February for its reactor, a close competitor to Focused Energy's.
- Type One Energy — told TechCrunch in January it had raised almost $90 million toward a $250 million Series B.
Next Steps: Lighthouse Demonstration System
Focused Energy hopes to build its first demonstration system, named Lighthouse, at the site of a decommissioned nuclear fission power plant in Germany that was operated by RWE. The location provides existing infrastructure and regulatory familiarity. The company did not provide a timeline for completing Lighthouse or for a commercial reactor.
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