The state rebate applies everywhere in Maryland, so it is the one program every Bowie-area household can plan around. Utility programs depend on the name on your bill.
Pepco serves much of Bowie and the Prince George's County communities around it, including many homes in Mitchellville and Largo. Some Bowie addresses are on BGE, and every home in Crofton is. Parts of the area near Upper Marlboro buy power from SMECO, which runs its own programs.
A rebate covers the charger and its install, not a new service. If your home needs a panel upgrade, budget for it separately using the cost factors guide. Not sure yet what your panel can carry? An EV readiness inspection answers that before you buy.
Picking a charger with rebates in mind? A Level 2 home charger or a Tesla Wall Connector qualifies for the state program, while a bare NEMA 14-50 outlet with no charger usually does not. Shared lots and businesses should start with commercial and workplace charging.