Nearly 15,000 customers in Lake Highlands and East Dallas are without power Monday as a result of rotating power outages caused by severe winter weather.

The Electric Reliability Council of Texas initiated the outages at 1:25 a.m. Monday because of record-breaking electric demand as people try to keep their homes warm. The outages are expected to last throughout Monday and until the “weather emergency ends,” according to a news release.

Rotating outages are controlled, temporary interruptions of electrical service that rotate through different parts of the electric grid. They usually last 15-45 minutes, but many neighbors reported outages lasting much longer.