Last updated: 30 October 2026
Privacy
Which data we keep, why, for how long and who else sees it. In short: what you enter in the calculator is not kept.
Who we are
Batterijsimulator.be is a service of Leoma Labs. We are responsible for what happens to your personal data. Send questions or requests to batterijsimulator@gmail.com.
What you enter in the calculator
Your consumption, your solar panels, your tariffs and any Fluvius file you upload are used only to make the calculation. We don't keep them: after the calculation they are gone from our server, unless you sign up for an email when a battery pays off or for the waitlist of the report Your best setup (see below). The PDF report is also made from what your browser sends us, and we don't keep it.
What we count
We count how many calculations are made each day and how often something happens, such as downloading a PDF report. These are only numbers per day: nothing about you, without a cookie and without your IP address.
Links to webshops
If you click a price, we count that click (again only as a number per day) and send you on to the webshop. Some of these links are affiliate links: the webshop or the affiliate network (for example Awin or Daisycon) may then set a cookie to see that you came through us. That happens on their site, under their own privacy policy. We get no data about you from them, only the number of sales and the commission.
Feedback and contact
If you send feedback or a request through a form, we keep what you enter (name, email address, company, phone, message) and email it to ourselves. Why: so we can answer you. For how long: 2 years after the last contact.
An email when a battery pays off
If a battery doesn't pay off for you (yet), you can leave your email address under your result. We then keep your email address, your language, the verdict you saw and what you entered in the calculator (without an uploaded Fluvius file), and send you an email with a confirmation link. Only once you use that link are you on the list; if you don't confirm within 7 days, the link expires and we delete your sign-up. Why: to calculate your situation again when prices or tariffs change and email you the result, based on your consent. Every email has a link to unsubscribe. We then delete what you entered and keep only your email address and the date, as proof that you unsubscribed, for 2 years.
Waitlist for the report Your best setup
The report Your best setup isn't available yet. If you join its waitlist, we keep your email address, your language and where you signed up. If you do that under your result in the calculator, we also keep the verdict you saw and what you entered, so your report can start from it. If you calculated with an uploaded Fluvius file, you can tick that we keep that file too (your offtake and injection per quarter hour); without the tick we don't keep it. You get an email with a confirmation link: only once you use it are you on the list; if you don't confirm within 7 days, the link expires and we delete your sign-up. Why: to email you once when you can order the report, based on your consent. That email has a link to unsubscribe. We then delete what you entered and your Fluvius file and keep only your email address and the date, as proof that you unsubscribed, for 2 years. Once the report is available and we have emailed you about it, we delete your sign-up.
Google Analytics
Only if you allow it, we use Google Analytics to measure how the site is used: which pages you view, which buttons you click and what the calculator worked out in broad terms (for example the verdict and your type of tariff), without your name or email address. Google Analytics sets cookies for this (_ga) that last up to 2 years. You can change your choice at any time through 'Cookie settings' at the bottom of every page. Your browser keeps that choice itself.
Technical data
As with every website, our hosting partner briefly keeps technical logs, such as your IP address and the page requested, to keep the site safe and working. Your browser fetches the site's font from Google Fonts, so Google also sees your IP address.
Who else sees your data
- Render (Render Services, Inc.), where the site and the database run, in Frankfurt (Germany).
- Google, for sending and receiving emails (Gmail), for Google Analytics if you allow it, and for the font (Google Fonts).
Render and Google are American companies. When data leaves the European Union because of this, it happens on the basis of the EU-US Data Privacy Framework, under which both are certified. We never sell your data and don't use it for advertising.
Your rights
You can view your data, have it corrected or deleted, object to its processing, and withdraw your consent for Google Analytics. Email batterijsimulator@gmail.com for this. If you're not happy with our answer, you can file a complaint with the Belgian Data Protection Authority.