brownout
From Longman Dictionary of Contemporary EnglishRelated topics: Electricitybrownoutbrown‧out /ˈbraʊnaʊt/ noun [countable] American EnglishTPE a time when the amount of electrical power supplied to an area is reducedExamples from the Corpusbrownout• It can protect your equipment from hazardous brownouts that occur when electric companies reduce voltage during periods of peak demand.