What economist is willing to say that there is a shortage of electricity where electric companies are regulated in the U.S. because there is a cap on how much t

What economist is willing to say that there is a shortage of electricity where electric companies are regulated in the U.S. because there is a cap on how much they can charge? In almost every state there is not a shortage of companies willing to provide car or home insurance even though they are not allowed to charge whatever they want. Which economist is going to say that in those states the price control on insurance companies is causing a shortage?