That happened early Tuesday, when ERCOT called on about 4,000 megawatts of battery storage to help meet the morning demand crunch. Those same batteries were charging up during the day to be ready for when the sun goes down and demand spikes again for the evening temperature drop.

Snow, sleet and freezing rain across Central and South Texas could bring down power lines, causing localized outages beginning Monday evening.

With the winter storm affecting the Houston area, power is a concern that many residents have after the winter storm that affected the area in 2021.