Nuclear fusion finally hits the market––underfunded

The Spring Valley Acquisition Corp III trust had been built to hand General Fusion as much as $338m. By the time the merger closed on Friday, redemptions had cut that to roughly $150m in cash, and it is with that sum, plus a Nasdaq ticker (GFUZ) that opens on Monday, that the Vancouver company becomes the first pure-play fusion business to face public shareholders.

General Fusion, founded in 2002 and backed for fifteen years by the Amazon founder Jeff Bezos, has spent its public rollout selling a particular kind of discipline. Greg Twinney, its chief executive, says the company deliberately avoided "raising billions of dollars to build large science machines" of the sort its rivals favor, pursuing instead what he calls a more capital-efficient route to commercial fusion. Frugality, in this telling, is the strategy; the $150m is meant to prove the sun can be chased without the sums that have made fusion a byword for money burned in its pursuit.

Squeeze play

General Fusion's competitors have not been practicing the same restraint. Commonwealth Fusion Systems, the Massachusetts tokamak developer widely regarded as the sector's leader, closed a single $3.85bn round in May, lifting its lifetime haul to roughly $6.85bn. The Fusion Industry Association, a trade body, counts more than fifty private fusion firms that have together raised close to $10bn, a bid underwritten by the AI build-out's hunger for firm, carbon-free power. Commonwealth has already signed Google as a customer and a billion-dollar power contract with the oil major Eni. General Fusion, over more than two decades, had raised about C$440m, some $310m, before this week's listing; its entire public war chest amounts to less than a twentieth of what Commonwealth raised this spring alone.