EV Charging in New Hampshire: What the Numbers Mean
New Hampshire's residential electricity rate is 25.4¢/kWh — 9.3¢ above the national average of 16.1¢/kWh, which narrows EV savings somewhat. At that rate, a typical EV (3.5 mi/kWh) costs $871/year to charge at home for 12,000 miles.
Compared to a 30 MPG gas car at $3.35/gal ($1340/year for the same miles), EV home charging saves $469/year — $2,345 over 5 years, before incentives.
Home Charging vs Public Charging in New Hampshire
The biggest driver of EV cost is where you charge. Home charging at 25.4¢/kWh is always the cheapest option. Public Level 2 stations average around 63.5¢/kWh — 2.5x more expensive. DC fast chargers run about 38.1¢/kWh. Tesla Superchargers in New Hampshire 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 $1306/year in New Hampshire, narrowing the gap with gas considerably.