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How Elmer calculates the charging price

A charging price can have several parts. Elmer converts them into one price per kWh, so you can compare providers.

By Allan Noer · 1 min read · Updated 12 October 2026

A standard charge

For rapid chargers we assume a 40 kWh charge over 25 minutes. For street chargers and home chargers (AC) we assume 20 kWh over 4 hours. Price per kWh, price per minute and start fee are added together and divided by the number of kWh.

Prices that change during the day

Some providers change their price every 15 minutes. Elmer calculates the price for all 96 quarter-hours of the day and shows the average along with the lowest and highest price. If a charge point has several ad hoc prices, we use the cheapest.

Idle fees

A per-minute fee that only starts after e.g. 30 minutes only counts for the minutes after that. The standard charge lasts 25 minutes, so here it does not count.

What we leave out

Subscriptions, unless you have chosen them yourself in the app.
Bridge tolls and the detour to the charger.
Queues and waiting time.

At home

The price of electricity at home is made up of the hourly spot price over the past year, your grid company's tariff, the tariffs of Energinet (the national grid operator), electricity tax, VAT and a DKK 0.08 surcharge to the electricity supplier. We assume a 10% charging loss from socket to battery.

See prices right nowRapid chargers from the nationwide providers, cheapest first.Charging prices

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