major power outage; massive blackout
Refers to a widespread electricity failure, often affecting a large area or many people. Common in news reports and official announcements.
A major power outage occurred due to the typhoon.
Secure emergency power supplies in preparation for a massive blackout.
停電 is a general power outage, while 大規模停電 specifically emphasizes a large-scale or widespread blackout.
Compound of 大規模 (large-scale) and 停電 (power outage).