EV充電費用計算

How to use this calculator

1. Enter the battery capacity and the start and target charge.
2. Enter your peak price per kWh, the off-peak price, and the share you charge off-peak.
3. Click Calculate cost for the energy, the cost and the off-peak saving.

How the cost is calculated

The energy added is the usable battery share; you pay for slightly more because of charging losses; the price blends peak and off-peak:

The blended price weights the off-peak and peak rates by how much you charge in each. Shifting more charging to off-peak lowers the blended price and the bill.

Why off-peak charging pays

Many tariffs (and Nordic spot pricing) are much cheaper at night. Because an EV adds a large, flexible load, scheduling it to off-peak hours is one of the biggest single savings a household can make. The calculator shows the saving versus charging entirely at the peak rate.

よくある質問

How much does it cost to charge an electric car?

Multiply the energy you add (battery × charge added ÷ 100, plus ~10% for losses) by your price per kWh. Charging a 60 kWh car from 20% to 80% is about 40 kWh from the grid.

How much can off-peak charging save?

It depends on the rate gap, but off-peak is often half the peak price or less. Charging mostly off-peak can cut EV running costs substantially versus charging at peak times.

What currency does this use?

Whatever currency you enter the prices in — the result is in the same currency. The calculation only uses the numbers you provide.