The hydrogenpowered robotic dog is driven by hydrogen fuel cells. Boasting longer endurance and fast refueling against lithiumpowered counterparts, it only emits water with zero carbon footprint. With quadruped locomotion, it accesses narrow pipes, pipe galleries and rough terrain for powerfacility inspection, site security patrol and industrial survey. It carries sensors to detect risks and feed back field data, replacing humans for highrisk tasks.