Aurora's New Reactor Steadies a Grid That Still Flinches at Dusk

GENEVA — The reactor that Aurora Fusion Works brought online the previous Friday has done what its builders promised: it has held the western interconnect flat through the midday trough, when solar floods the wires and prices used to crater. Fusion now supplies a shade over 31 percent of the reconnected grid, up from the roughly 30 percent that has become the decade's shorthand. But the operators at the Alpine Geneva Polytechnic control annex are careful. "A baseload machine is a wonderful floor. It is not a ceiling for the dusk peak," said duty engineer Tomas Vance, watching demand climb as cooling load and evening light collided on his board. Aurora's chief executive, Emeka Okonkwo, called the sync "one more brick, not the cathedral," a rare note of restraint in an industry prone to triumph. The gain buys margin. It does not yet buy the evening, when twelve billion people reach for the switch at once and the grid, briefly, holds its breath.