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EV charging cost tool

Charging cost depends more on where you plug in than on the car. A home kWh can be a fraction of a rapid-charger kWh. Enter your distance, the car's use per 100 kilometres, and the price you pay per kWh.

Quick math0

Use this for quick arithmetic, percentages, or to check figures while filling in the main tool, without leaving the page.

Your figures

Estimate

3,672 NOK per year

Annual energy cost
3,672 NOK
Monthly energy cost
306 NOK
Cost per kilometre
0.31 NOK

How this breaks down

Annual kWh
2,040
Distance
12,000 km

Covers energy only. Insurance, depreciation, tolls, and service are separate.

How to use this tool

  1. Use EV Charging Cost Tool for the question described above, and check that the inputs match your records and time period.
  2. Enter kilometres per year.
  3. Enter kwh per 100 km.
  4. Enter price per kwh (Example home price. Public charging is often higher.).
  5. Change kilometres per year, kwh per 100 km, price per kwh to compare scenarios, then check the units in the result.

Worked example with the prefilled values

This example shows how EV Charging Cost Tool uses its starting values. Change the calculator inputs to estimate your own situation.

Kilometres per year
12000 km
kWh per 100 km
17
Price per kWh
1.8 NOK

3,672 NOK per year

  • Annual energy cost3,672 NOK
  • Monthly energy cost306 NOK
  • Cost per kilometre0.31 NOK

Covers energy only. Insurance, depreciation, tolls, and service are separate.

Formula and calculation logic

Annual electricity use (kWh) = annual kilometres ÷ 100 × consumption per 100 km

Annual charging cost = annual electricity use × price per kWh; cost per km = annual cost ÷ annual kilometres

Annual kWh equal distance divided by 100, times consumption. Cost is that energy times your price.

Winter use is often higher than the mild-weather figure. If you know your own average from the car, use that.

The sample price of 1.80 NOK per kWh is a home-charging example, not a public-charger tariff. Public prices should be typed in full, including any per-minute fee spread over a typical session if you want it in the kWh price.

Assumptions

  • Losses between the meter and the battery are ignored. Home charging often loses a little energy as heat.
  • A subscription fee for a charging network is not included unless you fold it into the kWh price.

Published sources

Further reading for checking current rules and information. These links are not live inputs to the tool.

Questions about this tool

What consumption should I use?

A small electric car on a mild commute might use under 16 kWh per 100 km. A larger car in winter can use well above 20. Your trip computer is the best source.

Does this include the electricity tax?

Only if it is already in the kWh price you enter. The electricity bill tool separates tax and VAT when you are costing household power.

Can I compare this with petrol?

Yes. Run the fuel tool for the other car at the same distance and compare the annual energy lines. Then look at the car cost page for depreciation and insurance.