From The MacIver Institute:

In an opinion piece written for National Review, Travis Kavulla and Marsha Smith, both former presidents of National Association of Regulatory Utility Commissioners, argue that competition is the best regulator for prices. They use the analogy of a car sale to explain the 1978 Public Utility Regulatory Policies Act (PURPA), and how it gives the regulators of industries for renewable energy the ability to set prices. This law stifles the innovation along with the growth of renewable energies in the United States.