I believe several Texas coal and lignite fired power plants were shut down and de-comissioned in the not too distant past. I don’t believe they were a part of ERCOT, but in the SWPP power pool.
Bankrupting coal fired power plants was one of the Obama administration's stated goals. They did this through regulations and more an more stringent requirements mostly aimed at reducing CO2 emissions. They made it too expensive to operate them. Hundreds were shut down nationally and dozens in Texas. The revisionists are now trying to claim that coal fired power plants were shut down for economic reasons. But this is a half truth since most could no longer operate economically due to increased regulation.
In Washington State the enviro-whackos have been targeting dams. The state does not classify hydro-power as renewable energy in their endless march toward unreliable solar and wind power. In the end all of us are going to be paying multiple times as much as we once did for electric power because of this madness.
They were part of ERCOT and were mentioned in 2011/2012 reports, if I remember correctly, as contributing to the destabilizing of the grid back then.
Solar and wind could only keep up with new demand, but never filled the gap left behind.
Thank the EPA for shutting those coal plants down, even though lignite is the cleanest burning coal. Jerks!