Market Information System Grid and Market Conditions

News Release

November 28, 2016

Wind generation output tops 15,000 MW in ERCOT region

AUSTIN, TX, Nov. 28, 2016 – Wind generation set a new milestone on Sunday afternoon, providing more than 15,000 megawatts (MW) of the electricity used in the ERCOT region for the first time ever.

Specifically, the ERCOT system used 15,033 MW of electricity from wind at 12:35 p.m. on Sunday, Nov. 27, representing about 45 percent of total demand for electric power at the time. Of the total, more than 8,800 MW was produced from wind generation facilities in West and North Texas, while nearly 3,800 MW came from the South region, mostly the Gulf Coast area, and about 2,300 MW came from the Panhandle region.

"We saw high wind output throughout the day, ranging from just over 10,000 MW during the late night hours to this peak output during the noon hour," said ERCOT Senior Director of System Operations Dan Woodfin. "Over the years, ERCOT has taken a number of steps, such as improving renewable generation forecasts, to allow us to operate the grid reliably on days like this."

The portion of load served by wind ranged from about 35 percent to more than 46 percent, averaging nearly 41 percent throughout the day.

One MW is enough electricity to serve about 200 homes during peak demand and 500 homes during milder conditions. There is more than 17,000 MW of installed wind generation capacity serving the ERCOT system, and that total is expected to top 19,000 MW by the end of 2016.

The previous wind generation output record of 14,122 MW was set on Nov. 17. The current record for percentage of load served — 48.28 percent — was set on March 23, 2016, at 1:10 a.m.

In 2015, wind generation provided 11.7 percent of the energy used in the ERCOT region. As of the end of October, wind had served 14.7 percent of the region’s energy needs so far in 2016.

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.