ERCOT system breaks 69,000 MW hourly peak demand

The previous record of 68,912 MW lasted just four days before being bested by Monday’s new all-time high

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For the first time in this grid operator’s history, hourly demand within the Electric Reliability Council of Texas system broke the 69,000 MW threshold, with peak demand for electricity reaching 69,783 MW between 4 and 5 p.m. and 69,408 MW between 3 and 4 p.m.

“The ERCOT system has been performing very well through the triple-digit temperatures we’ve been experiencing,” said ERCOT Chief Operating Officer Brad Jones. “Today is no exception as operating reserves remained above 3,000 MW throughout this record peak.”

The previous record of 68,912 MW lasted just four days before being bested by Monday’s new all-time high. The system also broke its previous all-time weekend record during six operating hours this past weekend, with demand during the 4-5 p.m. hour on Saturday, Aug. 8, setting the new weekend record of 66,587 MW. One MW is enough to power about 200 homes during periods of peak demand.

“Demand is expected to remain high until temperatures begin to break at the end of the week,” Dan Woodfin, ERCOT director of system operations said. “Our focus continues to be on ensuring we maintain overall reliability and protect the grid while having sufficient generation in place to meet demand.”

As this week progresses, ERCOT Meteorologist Chris Coleman anticipates temperatures throughout the ERCOT region will drop slightly. See his weekly forecast here and an updated seasonal forecast here.

Wind power contributed between 2,000 and 2,400 MW from installed capacity of more than 13,000 MW during today’s peak.

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