Pros
The business itself, that of producing, moving and selling power, is tremendously solid. Even with all of the energy technologies that have developed in recent years, people are going to be buying electricity from the large producers for the foreseeable future, and power isn't yet as portable as stuff, so we won't see generation outsourced overseas.
Cons
The past decade has seen what was a very steady, slow-growth industry transformed by financiers taking an interest in it. Rather than focusing on the uninterrupted provision of a service for a reasonable profit, power companies have moved to maximizing profits for shareholders, largely on the backs of their labor force. Raises disappeared in the early ought's, then bonuses, then they started cutting staff by the thousands, all while demographics clearly indicated an impending shortage of trained, skilled workforce to maintain, let alone upgrade, the aging infrastructure.