ERCOT had declared a Level 1 Energy Emergency Alert and asked consumers and businesses to reduce their energy use from 3 p.m. to 7 p.m. Monday. The Level 1 alert allowed ERCOT to tap into power from neighboring grids.
ERCOT Vice President Kent Saathoff said unseasonably hot weather and the loss of several generating units prompted the emergency. A later ERCOT statement says those units will be in service Tuesday.