Market Information System Grid and Market Conditions

News Release

August 01, 2012

ERCOT grid ends month with new July peak

AUSTIN, TX, July 31, 2012 -- Electric demand on the Electric Reliability Council of Texas (ERCOT) grid peaked at 65,808* megawatts (MW) Tuesday, setting a new July record.

The previous July record of 65,432 MW occurred on July 27, 2011, during the hottest summer on record. One MW can power about 200 Texas homes during peak demand periods, typically hot summer days like this one, and about 500 homes during milder seasons.

Although there was sufficient generation to serve today’s electric use and other new records set in June, ERCOT reminds consumers to use power wisely. Conservation is especially important during peak use hours of 3-7 p.m. on hot summer days. Temperatures surpassed 100 degrees in several cities today, and most areas within the ERCOT region expect even higher temperatures for the remainder of the week.  

To keep up with grid conditions, download the ERCOT Energy Saver free mobile app for iPhones and Android devices. When conservation is needed most, ERCOT also will provide information through the news media, Facebook, Twitter (@ERCOT_ISO) and its subscription-based EmergencyAlerts list (

A few key steps consumers can take to reduce demand on the grid during peak demand hours include:

  • Turn the thermostat up by two or three degrees in the late afternoon.
  • Set pool pumps to run late at night or early in the morning.
  • Postpone chores that require the use of large appliances until later in the evening.

For more conservation tips, check the ERCOT Energy Saver app or visit the Public Utility Commission of Texas website.

*Updated Oct. 17, 2012, to reflect improved calculations on DC power flows as reported in monthly Demand and Energy report.


The Electric Reliability Council of Texas (ERCOT) manages the flow of electric power to more than 26 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 710+ generation units. It also performs financial settlement for the competitive wholesale bulk-power market and administers retail switching for nearly 8 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.