[mountainlion]

Wind energy causes pollution in coal fired power plants. The wind generated electricity has priority and the wind comes up the coal plant must shut down. When the wind dies down the coal plant must immediately increase power to make up for the loss of wind. Guess what, the coal then smokes in an emergency start up. Most of the wind plants here are idle as the owners collect money for electricity they do not generate so as to avoid the pollution.

[DTogo]

The wind generated electricity has priority and the wind comes up the coal plant must shut down.

Coal plants don't "shut down" in response to wind, gas-fired generation, specifically peakers, pick up the slack or ramp down generation.