EV Charging in Arizona: What the Numbers Mean
Arizona's residential electricity rate is 13.7¢/kWh — 2.4¢ below the national average of 16.1¢/kWh, which works in EV owners' favor. At that rate, a typical EV (3.5 mi/kWh) costs $470/year to charge at home for 12,000 miles.
Compared to a 30 MPG gas car at $3.42/gal ($1368/year for the same miles), EV home charging saves $898/year — $4,490 over 5 years, before incentives.
Home Charging vs Public Charging in Arizona
The biggest driver of EV cost is where you charge. Home charging at 13.7¢/kWh is always the cheapest option. Public Level 2 stations average around 34.3¢/kWh — 2.5x more expensive. DC fast chargers run about 34.6¢/kWh. Tesla Superchargers in Arizona are estimated at 29.3¢–36.5¢/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 $1186/year in Arizona, narrowing the gap with gas considerably.