energie27for householdsYour electricity costs from 2027, when net metering endsCalculator
Quick calculations

Frequently asked questions

Does a home battery suit a heat pump?

Sometimes. A heat pump uses most in winter, when there is little solar power to store. With a fixed contract a battery therefore adds little for the heat pump; with a dynamic contract it can help avoid expensive hours.

In summer a heat pump mainly uses electricity for hot water, and there is plenty of solar surplus. In winter it runs a lot, also in the evening and at night, while the panels generate little. Consumption and solar power therefore fall in different seasons.

Retaining heat in the house

A well-insulated house retains heat for a while. A heat pump that heats a little more at cheap or sunny hours and less at expensive hours shifts its consumption without a battery. A hot-water tank can do the same. Whether that is possible depends on your heat pump and its controls.

Look at them together

Battery, heat pump and contract affect each other: the heat pump uses solar power during the day that would otherwise have gone into the battery, and with a dynamic contract the evening peak is more expensive. That is why it is best to calculate them together.

Calculate heat pump and battery together

An estimate, not personal advice. How the calculator works: How does this calculator work?

Other questions

Find it useful? Spread the word.

The more people do the sums, the fewer surprises when net metering ends.

WhatsAppEmailLinkedInFacebookX

Report a problem

Is something not working, such as a button or the layout? Let us know.

What is sent along?

Not what you entered.