Pros
They pay you on time, mostly. Edison essentially has a monopoly on most of their Control Area, so that offers some stability when it comes to employment. Their benefits are decent, more or less inline with any major American corporation.
Cons
Edison sells a good game of change and growth, but their culture is quite set in the past. When you give the recommendations they request of you, be prepared to have them tell you "These changes can't be made, that's the way we've always done it" They require you to submit safety observations (even if they are made up) and your performance ratings depend on them. If you love meetings where the only outcome is another meeting, Edison is the place for you. The Performance Evaluations are successful in keeping the employee at arm's length of all managers, so expect your manager to have zero idea about what you do on a daily basis.