Market Information System Grid and Market Conditions

News Release

July 09, 2009

Electric Demand Usage Lower, Declining Through Weekend

Power Watch for Conservation Discontinued

Electric demand in the ERCOT region was slightly lower today than expected and did not break a record.  Consumers used an hourly average of 62,547 megawatts (MW) during the 4-5 p.m. interval today, down 239 MW from Wednesday’s record-breaking peak demand of 62,786* MW. 

System operators for the ERCOT grid, which covers most of the state, have not reported any major issues in managing the high demand this week. 

Although a heat advisory remains in effect for much of the state, electricity demand is expected to be lower on Friday and through the weekend.  ERCOT does not anticipate any electricity emergencies and is discontinuing the Power Watch request for conservation until further notice.   

*Note:  Based on initial calculations using data from throughout the transmission network; this number may be adjusted based on official meter data used in the market’s financial settlement process, which is completed six months after the operating day.

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.