Short answer
The weighted price of your real charging mix matters. Home charging can be cheaper but needs charger and installation cost. Public charging varies by provider and contract, so use your current prices.
Important variables
- Share at home, work and public
- Each unit price and subscription
- Charging losses
- Charger and installation cost over useful life
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Worked example
70% at €0.32, 20% at €0.45 and 10% at €0.65 gives a weighted €0.379 per grid kWh. Charging losses further increase the purchased amount.
Break-even: What changes the result?
More cheap home charging lowers running cost, but an expensive installation needs enough years and mileage. Solar electricity is not free; foregone export revenue remains relevant.
Common mistakes
- Using the cheapest tariff only
- Forgetting charging losses
- Assigning no use cost to the charger
Terms in this guide
EV vehicle-tax exemptionTime-limited tax benefit for qualifying pure electric vehicles.EV registration cutoffLatest date by which first registration may qualify for the described benefit.Public charging priceActual unit price and possible subscription for public charging.Home charging lossDifference between energy bought from the grid and stored in the battery.
Sources & assumptions
- European Commission — Consumer credit (2026-08-17)
- RATIOXA — Methodology and formulas (2026-08-17)
Continue learning
Continue with your numbers
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