Texas’ main electric grid operator is asking consumers to conserve power this afternoon between 3 p.m. and 7 p.m. as high temperatures squeeze power generation capacity.

The Electric Reliability Council of Texas asks customers to turn off unneeded lighting and other equipment and to hold off on running appliances such as washing machines until later in the evening.

“The ERCOT region is continuing to experience record high temperatures throughout the state, which is causing high electricity usage,” said Kent Saathoff, ERCOT’s vice president of system planning and operations. ”At this time, we expect to be tight over the peak hours today between 4-5 p.m., which means that significant generation outages could make us short of operating reserves.”

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