Market Information System Grid and Market Conditions

News Release

March 29, 2011

MEDIA ADVISORY: Forced Outage List -- Final Update Posted

The final list of generation units that experienced a forced outage during last month’s severe weather event, Feb. 1- 4,  has been posted on the ERCOT website in the News/Reports/Emergency Response section at this link. 

The forced outages identified by time period are:

  • 50 units:  Feb. 2, midnight to 5:43 a.m. , the beginning of the rotating outages
  • 91 units:  Feb. 2, midnight to 1 p.m. , the end of the rotating outages
  • 102 units:  Feb. 2, midnight to 11:59 p.m. , the full operating day
  • 152 units:  Feb. 1-4, the full period of the winter storm.  

The units on the list represent those whose owners or operators have given ERCOT written consent to publicly disclose the unit names and represent approximately 99 percent of all the units  that experienced a forced outage at some time during Feb. 1-4.   

ERCOT developed data on the generation outages through review of its internal operator records, outage scheduler information, telemetry data received from generators, and responses to information requests sent to generators.

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.