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When is electricity cheapest before your deadline?

Does the car need to be ready at seven, or do you want to run the dishwasher before bedtime? Choose the earliest start, the energy need or the duration and the time the task must be finished. The calculator finds the cheapest possible slot within the prices that are available.

Applies to the amounts in this calculator.

What needs electricity?

The amount of electricity the car needs.

kWh

The highest power the charger and the car can charge with.

kW
Earliest start
Finish by

The grid tariff changes over the day. It is on your electricity bill.

Charging loss and your supplier markup

The share of the electricity from the grid that does not reach the battery.

%

The markup per kWh including VAT from your electricity agreement.

DKK/kWh

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Result

20 22 00 02 04 06 08 10 12 14 16 18 20 22

Prisen pr. kWh er spotpris, Energinets tariffer, elafgift og moms. Ikke med: din elleverandørs tillæg, nettarif og faste abonnementer. Priserne er kendt til i morgen kl. 24:00. Kilde: Energi Data Service.

Choose the right type of task

A dishwasher normally has to run its programme without a break. Car charging can in some solutions be spread over several cheap periods. Choose whether the task may be interrupted, and enter the charging power when you calculate an energy need.

The price must match your agreement. Price area, supplier mark-up, taxes and relevant tariffs can make the difference between cheap spot power and cheap electricity at the socket. The calculator shows which items are included.

How to plan your electricity use

Set a deadline that can be met

A charge needs enough time to deliver the energy you want. If the time window is too short, you get an explanation instead of a time that cannot work.

See the saving against a specific start

An appliance of 2 kW uses 4 kWh in two hours at constant power. If the two hours cost 1 and 2 DKK per kWh, the price is 6 DKK. Two hours at 1 DKK per kWh give 4 DKK instead.

Tomorrow’s prices are only included once they have been published and fetched. The result is a plan; automatic control requires a solution that can actually start and stop the equipment in question.