There are 7000 wells spread or thousands of square miles. Now way to connect them to distribute the power. They would be better off connecting a pipe between well sites and save the gas to sell later. The gas however is a fraction of the value of the oil recovered so it is considered waste. Not worth collecting and selling.
They cant sell the energy to utilities because there is no infrastructure to transfer the electricity. Although you would think they could run some lines from the wells to a nearby power line. Although, it can't be cheap to erect those lines, so perhaps it doesnt make sense economically. And you have to figure once the well is dry, that land is not going to have a lot of demand for a residential use, so any erected power line would then become worthless.