EV Charging in Maryland: What the Numbers Mean
Maryland's residential electricity rate is 16.4¢/kWh — 0.3¢ above the national average of 16.1¢/kWh, which narrows EV savings somewhat. At that rate, a typical EV (3.5 mi/kWh) costs $562/year to charge at home for 12,000 miles.
Compared to a 30 MPG gas car at $3.25/gal ($1300/year for the same miles), EV home charging saves $738/year — $3,690 over 5 years, before incentives.
Home Charging vs Public Charging in Maryland
The biggest driver of EV cost is where you charge. Home charging at 16.4¢/kWh is always the cheapest option. Public Level 2 stations average around 41.0¢/kWh — 2.5x more expensive. DC fast chargers run about 35.4¢/kWh. Tesla Superchargers in Maryland are estimated at 34.3¢–42.7¢/kWh depending on membership.
Most EV owners do 80%+ of their charging at home overnight. If you don't have home charging access, the economics shift significantly — charging entirely at public DC fast chargers would cost $1214/year in Maryland, narrowing the gap with gas considerably.
Maryland EV Rebate: $3,000
Maryland EVA Tax Credit: up to $3,000 for new BEV. Income limit of $300K joint. File Maryland Form 500CR. EVs in Maryland also qualify for HOV lane access.