Elmer
Smart charging and hourly electricity prices
Electricity at home does not have one fixed price. The price changes hour by hour, and there is a big difference between evening and night.
What sets the price
The electricity price itself (the spot price) changes every hour with supply and demand. On top comes the grid tariff (nettarif) your local grid company (netselskab) charges for transporting the power. It is highest from 17:00 to 21:00, when everyone comes home and cooks, and lowest at night. Added together, electricity costs on average around 2.06 DKK/kWh from 17:00 to 21:00 and 1.28 DKK/kWh at night.
What is smart charging?
With smart charging, the car or the home charger waits to charge until the cheapest hours. You plug in the car when you get home and set when it should be ready. You can control this in the car's app, in the home charger's app or through your electricity supplier.
What you save
If you charge 2,500 kWh a year at home, you save around 2,000 DKK a year by charging at night instead of in the evening. This requires an electricity deal with hourly pricing (spot price). Most people have one today.
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