How much does it cost to charge a Honda Prologue in California?

California's 12-month average rate, 32.3¢/kWh, is 79% above the U.S. average of 18.0¢/kWh, so the Honda Prologue costs $4.65 more per 100 miles here than at the national rate.

Rates in California are rising: the latest 12-month average is 3.7% higher than in the 12 months before.

In the last 24 months both the cheapest and the most expensive month fell in spring, so the swing reflects price changes rather than a seasonal pattern: April 2025 at 27.8¢/kWh and April 2026 at 35.3¢/kWh, which moves the Honda Prologue's monthly charging cost between $92 and $117. The latest published month, August 2026, came in at 29.8¢/kWh, 8% below the 12-month average.

Of the 5 states covered so far, California is the most expensive place to charge the Honda Prologue; in Washington it costs $4.62 per 100 miles.

Among the 10 EVs on OutletBill, the Honda Prologue is the 7th cheapest to charge per mile in California. The cheapest is the Tesla Model 3 at $7.86 per 100 miles; the most expensive is the Rivian R1S at $13.86.

Of the 3 standard SUVs on OutletBill, the Honda Prologue is the cheapest to charge in California, $1.76 per 100 miles less than the Kia EV9.

At 32.5 kWh per 100 miles, the 2026 Honda Prologue FWD uses less energy than 74% of the 321 2026 EV versions EPA has tested.

EPA rates the 2026 Prologue FWD at the same efficiency as the 2025 version, 32.5 kWh per 100 miles, with the same 308-mile range.

Across all 3 trims of the 2026 Prologue, cost per 100 miles in California ranges from $10.52 for the FWD to $11.41 for the AWD Elite, a difference of $108 a year at 1,016 miles a month.

EPA estimates 9.5 hours to charge the Prologue FWD from empty on a 240-volt Level 2 home charger, longer than a typical night, though a full charge is rarely needed. At 1,016 miles a month (about 33 miles a day), a day's driving takes roughly 1 hour on a Level 2 charger.

Electricity would have to cost more than 73.9¢/kWh, 2.3 times California's rate, before the Honda Prologue cost more per mile than the 2026 Honda Passport AWD. Put the other way, gas would have to fall below $2.21 a gallon.

Gas costs use EIA's California retail average for regular gasoline ($5.05 a gallon over the same 12 months, 40% above the U.S. average of $3.61) and the 2026 Honda Passport AWD's EPA rating of 21 mpg combined.