BGE Baltimore Gas and Electric holding me liable for a bill that is not mine baltimore Maryland

It doesn't matter where you were living. The big question is who's name is the utilities in.

If they are in your name, then the utility does have the right to require you to pay the past due balances before they have them switched over. Because you and your new wife are now legally married and presumably would be living together, they are not going to allow the services to be restarted just because you happen to put them in her name. This would go for ANY utility.

If by chance you have the divorce decree stating you are not responsible, you are also still legally responsible for the bill to the utility. The decreee would just allow you to go after your ex for any balance you had to pay.

But a bigger question is how did the bill get that high? If this is back from 2013 and the house did not become vacant until 2015, how could they still have had utilities on in 2015 with a delinquent balance? Utilities won't let you get a couple months behind, and this is a couple of years.  Or was the person(s) living there, living without any utiltiies turned on?

It is also odd that you let the house sit vacant for over a year and a half.  But would still be able to go there to periodically check on it.   Was the utilities turned on during this time?  If so who's name were they in?