Your EV's Default Charging Setting Is Costing You $870 a Year
Plugging in after work triggers peak electricity rates; a simple timer setting can shift your charging to off-peak hours, saving hundreds annually.
Despite EVs costing half as much to fuel as gasoline, home charging savings evaporate when owners charge during peak utility hours. A 20¢/kWh difference between PG&E's peak and off-peak rates means $15.40 extra per full charge—roughly $1,600 yearly for twice-weekly charging. The fix requires no hardware: just set your EV's charging schedule to start after 9 PM. Public DC fast chargers face a separate economics problem, but the home charging trap is a settings adjustment away from resolution.
You bought an EV because the math was simple. The Department of Energy says electric fuel costs about half what gasoline does. KBB ran the numbers on an IONIQ 5: $14.83 to charge at home versus $28 at a DC fast charger. Qmerit puts the annual savings at $1,700 for 13,500 miles. The math works. But here is where the fine print bites. That $14.83 home charge assumes you plug in at the right hour. PG&E's EV2-A rate, effective March 2026, has three tiers: off-peak at 25¢/kWh, partial-peak at 37¢/kWh, and peak at 45¢/kWh. A 20¢ spread between off-peak and peak. On a 77 kWh battery, that is a $15.40 difference per full charge. Do that twice a week and you are paying an extra $1,600 a year without realizing it. The trap is the default behavior. You get home from work at 5:30 PM, plug in, walk inside. That is peak window: 4 PM to 9 PM. You just bought electricity at nearly double the overnight rate. The car does not tell you. The charger does not tell you. The utility's bill comes sixty days later and you wonder why your "savings" evaporated. The single most valuable change you can make costs nothing and takes thirty seconds. Open your car's charging schedule — every modern EV has one — and set it to start after 9 PM or before 4 AM. That is it. No hardware upgrade. No rate plan change. Just a timer that moves your load from 45¢/kWh to 25¢/kWh. ElectricChoice ran the numbers: shifting your charging by just 3¢/kWh saves $130 per year. The gap between PG&E's off-peak and peak is 20¢. That is not $130. That is closer to $870 per year for a typical driver. The hour you plug in is worth more than the charger you buy. Public charging has its own math problem. A DC fast charger can cost 3x to 5x what you pay at home because the station owner has to cover demand charges, equipment maintenance, and profit. That is a different problem with a different fix. But the home charging trap? That is a settings screen you have not opened yet. Ignore the "charge when you park" default. Your utility's peak window is the enemy, and it starts at 4 PM. Set the timer. Walk away. The savings stay.