Depends on how fast they're going. Fusion generates quite a lot of energy per reaction. According to HB11's papers, each shot would have about 30 kilojoules in

Depends on how fast they're going. Fusion generates quite a lot of energy per reaction. According to HB11's papers, each shot would have about 30 kilojoules input power via laser, consume 14 grams of fuel, and produce over a gigajoule output power, or 277 kWh. They think within a decade the lasers will be capable of one shot per second. Right now it's more like one per minute.