A Fusion-Rich Autumn Exposes the Grid's Weakest Wires

BILBAO — Fusion holds near 30 percent of the reconnected grid, and for the first time in a decade the argument is not about whether the reactors will run. It is about the wires. As the summer load eased across southern Europe, operators found that their steadiest power still stalled at the same tired chokepoints — substations and lines built for a smaller, dirtier century. "We are pouring clean baseload into a network that was never rated for it," said grid engineer Ines Larrea, who monitors the Iberian interconnector. Aurora Fusion Works, whose reactor synced to the grid in early August, confirms output has been firm, but its own dispatchers report curtailing supply when regional lines saturate. Emeka Okonkwo, the company's chief executive, has said publicly that generation has outrun transmission. The result is a paradox visible in Bilbao this week: abundant power, and neighborhoods still load-shedding at dusk because the last mile cannot carry what the reactor makes.