Implikationen tycks inte vara att stationen har flera reaktorer (alla tecken pekar på att den har en enda huvudreaktor) men att de refererar till mängden energiproduktion från hypermatterreaktorn själv.
Observera att de använder en serie baffles för att minska mängden strålning och därmed ström genereras av huvudreaktorn. Detta är förmodligen vad de menar med att använda en enda reaktor.
“Target Jedha City,” he snapped. “Prepare single reactor ignition.”
Krennic concealed his resentment, calmed himself with the sounds of his breath and the tidal rush of the station reactor. This wasn’t how he’d imagined the culmination of twenty years’ work—a diminished attack, a grand moff’s power play—but it was the reality he contended with.
...
KRENNIC PACED THE OVERBRIDGE UNDER Tarkin’s watch, observing the technicians and referencing every step against the control protocols he’d memorized long ago. Levers were flipped, rotating focusing lenses deep within the station’s core. Engineers adjusted radiation baffles and ventilation pumps as the main reactor shook with effort and its comforting roar turned to an eerie scream. Krennic saw more than one hand shaking, more than one face flushed or daubed with sweat. But his officers knew their duty. They would do everything necessary to destroy Jedha City at the bidding of their commander.