: A low-frequency "thump" or a high-frequency "zing" that pitches down (similar to a vinyl record slowing down) helps signify mechanical or electronic shutdown.
If you are looking for pre-made "Power Outage" sound clips, you can find high-quality assets at these sources: Free Power-Outage Sound Effects Download - Pixabay Sound 10: Power Outage Effect
To create a realistic or cinematically effective power outage, you should combine several distinct layers: : A low-frequency "thump" or a high-frequency "zing"