Free home battery calculator
Calculate which home battery capacity fits you
Enter a few details and get an initial sizing indication: suitable battery capacity (kWh) and how smartly you can use your solar energy.
- Instant result
- See an initial indication of capacity and potential benefit immediately.
- Filled in within 1 minute
- Short questions about usage, panels and home situation.
- No contact details needed
- Start anonymously — you only share details if you want to.
Calculate which home battery capacity fits you
Enter a few details and get an instant first sizing indication: suitable battery capacity (kWh) and how smartly you can use your solar energy.
No contact details needed to get started.
How your energy will flow
Solar panels, battery, home and grid work together.
Day and night
Charge during the day, use from the battery in the evening.
Step 1
Heavy consumers
No contact details needed. Your result appears on the right at step 2.
Step 2
Your first home battery estimate
Based on your answers you will see suitable capacity, self-use and what we recommend.
Definitely worth exploring
You generate a lot of solar energy and mainly use power at times when storage really pays off.
Recommended size
10 kWh
Product capacity that fits your check.
Estimated capacity
4 – 8 kWh
Indication of what could fit your home.
Use more of your own solar energy
55% – 75%
By storing generated power for later.
Indication for your situation
Definitely worth exploring
A dynamic contract can influence the sizing choice.
Je check geeft indicatief 4–8 kWh aan — dat is wat je op een doorsnee dag nuttig kunt opslaan. De kleinste maat die wij adviseren is 10 kWh: genoeg marge voor je avondverbruik, zonder dat je betaalt voor 15 of 20 kWh die je weinig gebruikt.
Smart use of energy prices
This is a first sizing indication, not a savings guarantee. Actual outcome depends on your home, installation, energy contract, net metering, usage and battery type.