We had an energy cooperative that serviced our previous house and the quality of service was excellent. Power was restored quickly after storms, customer service was friendly, and best of all, because everyone was a "member" instead of a customer, we got a check back every year with any excess profits that they made.
Anecdotal of course, but our current energy supplier is government run and compared to the cooperative it is much more expensive, customer service is worse, and outages tend to be longer.