News Release

    August 10, 2016

    ERCOT surpasses 70,500 MW, breaks hourly peak demand records set earlier this week

    Austin, TX, Aug. 10, 2016 — For two consecutive hours today, ERCOT systemwide demand surpassed the previous record set Monday, Aug. 8.

    Peak demand reached 70,531 megawatts (MW) between 3 and 4 p.m. and then blew past that new record with 70,572 MW of demand between 4 and 5 p.m. This tops Monday’s record by 403 MW.

    "We’re pleased that the system continues to perform well as the need for air conditioning drives up demand," said Dan Woodfin, director of System Operations. "These hot summer days always put our grid to the test, and we have had sufficient generation available to carry us through these high-demand periods."

    The current load forecast indicates the region may meet or exceed 70,000 MW in demand between 3 and 6 p.m. tomorrow as well. ERCOT works closely with its market participants to ensure there is enough generation and transmission resources available through peak demand hours.

    "Based on current projections, we also don’t expect any issues tomorrow," Woodfin said. "That will depend in part on whether generation, including wind, remains available at levels similar to what we saw today."

    One MW is enough generation to serve about 200 homes during peak demand, which generally occurs between the hours of 3 and 7 p.m. on hot summer days. August is typically the hottest summer month in Texas, and demand usually increases during this time.

    Previous All-Time Peak Records

    70,572 MW* Aug. 10, 2016 (4-5 p.m.)

    70,531 MW* Aug. 10, 2016 (3-4 p.m.)

    70,169 MW* – Aug. 8, 2016 (4-5 p.m.)

    70,009 MW* – Aug. 8, 2016 (3-4 p.m.)

    69,877 MW – Aug. 10, 2015

    68,912 MW – Aug. 6, 2015

    68,459 MW – Aug. 5, 2015

    68,305 MW – Aug. 3, 2011

    *These numbers are preliminary and, in some cases, may include exports. Final demand records are subject to change, pending final settlement in the ERCOT market.

    To stay aware of real-time system conditions, consumers are encouraged to download the ERCOT Energy Saver app. It is available for download on iTunes and Google Play. Grid information also is available on the ERCOT website at



    The Electric Reliability Council of Texas (ERCOT) manages the flow of electric power to more than 25 million Texas customers -- representing about 90 percent of the state’s electric load. As the independent system operator for the region, ERCOT schedules power on an electric grid that connects more than 46,500 miles of transmission lines and 600+ generation units. It also performs financial settlement for the competitive wholesale bulk-power market and administers retail switching for 7 million premises in competitive choice areas. ERCOT is a membership-based 501(c)(4) nonprofit corporation, governed by a board of directors and subject to oversight by the Public Utility Commission of Texas and the Texas Legislature. Its members include consumers, cooperatives, generators, power marketers, retail electric providers, investor-owned electric utilities, transmission and distribution providers and municipally owned electric utilities.