to extinguish (a flame, fire), to douse; to satisfy; quench, slake (thirst, etc.); to shut off, to turn off, to switch off, to shut down, to power off; to put out, to stub out (e.g., cigarette)
blackout, power cut, brownout, power outage (an interruption in the supply of electricity); blackout (an instance of censorship, especially a temporary one); blackout, shutdown