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In the race to build fusion reactors, a new set of startups are building the infrastructure layer they run on. Toronto's Daedal Systems, led by an ex-General Fusion employee, just raised $5.7M to build fusion energy's measurement platform. We look at what measurement unlocks, and why betting on the plumbing, not the reactor, could pay off.

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What happened: Daedal Systems raised $5.7 million to build the missing measurement infrastructure for fusion energy. The mission: build standardized diagnostics for fusion reactors to bring speed and trust to the rapidly-growing fusion industry.

Founder and CEO Henry Gould spent three years building plasma diagnostics in-house at General Fusion before founding Daedal to solve the problem across the industry.

The tech: Fusion reactors create energy by fusing particles together, releasing massive amounts of energy. The reaction happens in super-charged gas called plasma that reactors need to keep at a constant temperature.

Daedal is developing diagnostic tools that measure the temperature, density, and behaviour of plasma in fusion reactors. Their platform can adapt to the different reactor types currently being explored.

Why it matters: Fusion startups are spending valuable engineering cycles building these diagnostic tools in house, pulling time and focus from developing the core reactor technology.

Custom measurement also makes it difficult to benchmark results - exactly the evidence investors need before committing more capital.

Validating plasma data has no shared standard yet - a gap identified by the US DOE as one of fusion's most critical, yet under-invested, bottlenecks to commercial power.

What's the context: A growing cohort of industry veterans is spinning out of fusion startups to build picks and shovels for the sector.

Proxima Fusion recently raised €140 million to produce superconducting tape for fusion reactors. But most of the supply chain is still focused on hardware, fuel, and power supplies, with just a handful of companies working on measurement.

What's next: Daedal is betting on fusion infrastructure, not a specific reactor design. The company has signed MOUs with fusion startups like Stellarex Energy and Marathon Fusion, and will use the new capital to put prototypes in the hands of pilot customers.

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