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Demand for power on the grid that serves most of Texas hit the third-highest level in its history on Wednesday, Aug. 7.

The Electric Reliability Council of Texas (ERCOT) says peak electric use within its region topped out at 67,180 MW during the 4-5 p.m. hour. The operator notes the grid experienced no problems during the day, with more than 74,000 MW of electricity, including more than 2,300 MW of wind power, available during the peak hour.

Specifically, the fuel mix powering the grid during Wednesday's peak included 59.3% natural gas, 29.2% coal, 7.5% nuclear, 3.4% wind, 0.3% diesel generation, 0.2% solar and biomass, and 0.1% hydroelectric power.

“We appreciate all the work by transmission and generating companies to keep the power flowing on this very hot day,” says Kenneth McIntyre, ERCOT’s vice president for grid planning and operations.

This was the highest demand so far in 2013, which has included a mild summer compared to 2012 and the record-breaking 2011, Texas’ hottest summer on record. ERCOT’s record peak occurred on Aug. 3, 2011, when demand hit 68,305 MW.



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