Thuisbatterijrekenaar

Thuisbatterijrekenaar is a free calculator, in Dutch, for homeowners in the Netherlands who want to know whether a home battery (thuisbatterij) makes sense for them.

Why it exists

The Dutch salderingsregeling — the rule that lets you offset the surplus solar power you feed back against your electricity bill — ends on 1 January 2027. The calculator works out what that costs you per year, what a home battery would save, the battery capacity it would take, and how long it would take to pay for itself.

How it works

• Six short questions: postcode, consumption, solar installation and household
• The calculation runs entirely in your browser. What you enter is not stored and is not sent to a server.
• Every assumption behind the result — tariffs, battery prices — is published together with the date it was last updated.

Independent

Thuisbatterijrekenaar does not sell batteries, and it is not tied to any energy company or installer.

Also on the site

• A knowledge base (kennisbank) with articles
• A page with daily electricity prices

Status

Available at thuisbatterijrekenaar.nl.