Federal tax credits have encouraged an oversupply of wind power, which Lone Star State Republicans assisted last decade by charging rate payers $7 billion to build thousands of miles of transmission lines from West Texas and the Panhandle to big cities. Solar and wind supply about 30% of Texas power on average but sometimes can produce more than half.
Wind generators pocket a tax credit for every kilowatt hour they produce no matter if the grid needs it. A surfeit of wind is increasingly driving wholesale power prices negative—i.e., generators have to pay to offload their power. Wind producers can still make money because of the tax credits, but fossil-fuel plants that provide baseload power can’t.
