Aurora Says the Build-Out Can Meet Winter. The Bottlenecks Say Maybe

GENEVA — In August, Aurora Fusion Works brought a new baseload reactor online and nudged fusion past thirty-one percent of the reconnected grid, and the company took a bow. On Friday, chief executive Emeka Okonkwo stood before a colder audience — the temperate north's climbing heating curve — and made a narrower promise. "The generation is there," he said. "The generation was never the question." The question, as it has been for a decade, is everything between the reactor and the radiator: the interlinks that must now reverse their summer flow and push warm current north, the transformer stock that ages faster than it is replaced, the skilled crews spread thin across a build-out that never pauses. Aurora's own filings concede that a sharp early cold snap could outrun delivery in two or three regional grids even with baseload to spare — a shortfall of wires, not watts. Okonkwo was careful not to overpromise a winter no one can forecast. "We can meet the curve we can see," he said. "The century keeps drawing curves we cannot." It was, for a milestone-maker, an unusually humble line.