EV Charging in Maine: What the Numbers Mean
Maine's residential electricity rate is 22.8¢/kWh — 6.7¢ above the national average of 16.1¢/kWh, which narrows EV savings somewhat. At that rate, a typical EV (3.5 mi/kWh) costs $782/year to charge at home for 12,000 miles.
Compared to a 30 MPG gas car at $3.38/gal ($1352/year for the same miles), EV home charging saves $570/year — $2,850 over 5 years, before incentives.
Home Charging vs Public Charging in Maine
The biggest driver of EV cost is where you charge. Home charging at 22.8¢/kWh is always the cheapest option. Public Level 2 stations average around 57.0¢/kWh — 2.5x more expensive. DC fast chargers run about 37.3¢/kWh. Tesla Superchargers in Maine are estimated at 46.0¢–55.0¢/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 $1279/year in Maine, narrowing the gap with gas considerably.
Maine EV Rebate: $2,000
Maine Efficiency Maine EV Rebate: up to $2,000 for new BEV or PHEV. Income-based tiers up to $4,000. Apply at efficiencymaine.com.