find it here.  How is it shale related?

http://www.ercot.com/news/press_releases/show/518

...

Although the long-term report projects a negative reserve margin by 2022, the outlook for summer 2013 actually has improved since the previous CDR was released in December 2011. That report showed the reserve margin slightly above 12 percent by summer 2013 and in negative numbers by 2020. Since that report was released, about 1,240 MW of previously “mothballed” capacity has returned to service for the foreseeable future. Anticipated capacity now also includes 1,130 MW of coal-fired generation that expected to discontinue operations under the Cross-State Air Pollution Rule proposed by the U.S. Environmental Protection Agency. That rule has been stayed in federal court.

Since the last CDR report was released in December 2011, nearly 600 MW of new renewable power has begun operations within ERCOT. That includes 105 MW of biomass, 432 MW of wind power and 59 MW of solar power.

By 2016, the forecast includes 3,657 MW of new gas-fired capacity, more than 2,000 MW of new wind power, about 900 MW of new coal-fired generation and 60 MW of solar power.

New wind power will include about 600 MW of coastal wind, which historically has provided significant power to the grid when it is needed most — late in the afternoon on hot summer days....