This is a translation of the Dutch privacy policy. In the event of any difference in meaning between the versions, the Dutch text prevails.
Version 5, 23 October 2026.
Who we are
Dyson Energy B.V., trading as Dysun Energy, supplies home batteries and energy management and handles their installation, service and support. We are responsible for the processing of personal data as described in this policy, except where we say that another party is responsible.
Dyson Energy B.V., Voltaweg 29, 6101 XK Echt, the Netherlands. Chamber of Commerce (KvK) 89842316. Telephone +31 85 800 1730. Privacy questions: dysun@dysun.energy.
This policy applies to dysun.energy and to the calculators and tools on dysunenergy.nl.
Which data we use and why
| Purpose | Data | Legal basis | Retention |
|---|---|---|---|
| Handling a request or question through a form or calculator | Name, email address, telephone number, postcode and house number, your message, the result of a calculation and what you enter for it (consumption, solar panels, chosen battery) | Preparing an agreement you ask for; for a general question, our legitimate interest in answering it | As long as the contact or request is ongoing, then no longer than necessary |
| Seeing through which channel a request comes in | The name of the referring website, the first page of your visit and any campaign code | Legitimate interest: knowing which channels produce requests | Together with the request |
| Protecting forms against abuse by robots | Your IP address and technical data from your browser, processed by Cloudflare | Legitimate interest: protecting our forms and our customer system against spam and abuse | Not stored by us |
| Reading an energy bill or meter data for advice | The text of your bill or the export from your smart meter | Preparing an agreement you ask for | No longer than necessary for the advice |
| Delivery, installation, service and warranty | Name, address, contact details, installation data (type, serial numbers, installation date), fault reports | Performance of the agreement | As long as the warranty runs |
| Invoicing and administration | Name, address, company and invoice details, payment details | Legal obligation | 7 years after the end of the financial year |
| Business relations (partners, suppliers, installers) | Name, role, company and contact details | Performance of an agreement or legitimate interest | As long as the relationship lasts, no longer than necessary |
We do not use your data for any other purpose, unless that fits the purpose for which you gave it. We do not sell your data. If you want to know exactly how long your data is kept, email us.
You are not obliged to give us data. Without your name, email address and what you want to know, we cannot handle a request. For advice through the calculator we need the data you enter.
We do not take decisions about you that are made solely by a computer and that significantly affect you. A calculation in the calculator is an indication, not a decision.
How a form or calculator works
If you fill in a form or calculator, your data goes into our customer system (Odoo). A colleague gets in touch with you. You receive a confirmation by email with what you entered, and our team receives a notification. The email is sent through the mail server of Odoo (SMTP2GO).
If sending fails, you see that straight away on the page, with a ready-made message that you can email to us yourself. No other service sits in between.
With every submission we also send along which website you came from, on which page you started and any campaign code from the link. Of the referring website we keep only the name, for example google.com or chatgpt.com, not the full address. Your browser remembers this only during your visit and only in that one tab, and sends it only when you submit the form yourself.
Protecting our forms (Cloudflare Turnstile)
To stop robots from flooding or abusing our forms, we use Turnstile from Cloudflare. As soon as you start filling in a form, your browser loads a script from Cloudflare that checks whether you are a human. Usually you see nothing of this. Cloudflare then receives your IP address, technical data from your browser and the origin of the form.
Cloudflare acts in two roles here. For the check itself, Cloudflare processes the data on our behalf. In addition, Cloudflare uses limited data for its own purposes, namely improving and securing Turnstile, and is itself responsible for that. How Cloudflare handles this is described in the Turnstile privacy policy of Cloudflare.
Our interest is to protect our forms and our customer system. The script loads only when you use a form, not when you visit the site. Loading it places no cookie on our website and writes nothing to the local storage of our own site. If you object to the check, email or call us: we will help you without a form.
Uploading energy bills and meter data
If you upload an energy bill or an export from your smart meter or energy monitor, for example a CSV file from the HomeWizard app, we use it only to make the advice you ask for. To read a bill we send its text to Anthropic, an AI service. We do not share an export with others and we delete it at your request.
Questions to the assistant
On dysun.energy (knowledge base) and on dysunenergy.nl you can ask a question to an AI assistant. Your question, and for the knowledge base the text of the most relevant articles, goes to our own server for this and from there to Anthropic, which drafts the answer. Do not enter data in such a question that could identify you, such as your name or address. We ourselves record only technical usage figures (which function, how much text, what cost).
Monitoring your installation
An installation comes with an app and a web portal for following your installation. That platform is provided by a supplier that we call the platform supplier here. You create your account with the platform and agree to the terms of use and the privacy policy of that supplier. You find both in the app and on the login screen. The platform supplier is responsible for the platform itself: your account, its storage and its security.
According to the privacy policy of the platform supplier, the data concerned is:
- account data: name, email address or telephone number;
- installation data: name, region, address, GPS location if you allow it, capacity;
- measurements from your installation: serial numbers of the devices and measured values (generation, consumption, grid exchange, battery), passed on every five minutes, plus status messages and alarm codes;
- technical data of your phone or computer: device model, operating system, app version, IP address and log files.
Consumption data can say something about when you are at home. It is therefore personal data.
We can view the data of installations that we have supplied. We do this to solve faults, give service and carry out your warranty. We are responsible for that use. If you want to know which party the platform supplier is, in which country the data is stored or who has access to it, ask us. Would you like access to, correction of or deletion of data on the platform? Let us know and we will help you submit the request to the platform supplier.
Logging in to the platform
For the portal for installers and staff we use Supabase for login details and roles. This does not apply to visitors of the regular website.
Third-party services on our websites
On dysun.energy the fonts are our own. On dysunenergy.nl the pages load fonts from Google Fonts, the electricity prices on the price page come directly from EnergyZero, and some pages load helper files from jsDelivr and cdnjs (calculation helpers and charts). Your browser connects to those parties for this and they receive your IP address.
If you choose English on dysunenergy.nl, the language choice sets a cookie (googtrans) and the page text goes to Google Translate. Without that choice this does not happen.
Statistics
We measure usage with Vercel Web Analytics. It places no cookies and builds no profiles. The measurement is on by default and you can switch it off through the cookie notice or the “Cookie preferences” link at the bottom of every page. More is in our cookie policy.
Who we share data with
We share personal data with parties we need for this:
- suppliers of IT, hosting, email and our customer administration: Vercel and Railway (hosting of the websites and of the server behind the assistant), Odoo (customer system and email), SMTP2GO (sending email), Cloudflare (robot check), Anthropic (assistant and reading energy bills), Supabase (logging in to the platform) and Google (translation);
- installers who carry out the installation for us or for you;
- carriers and logistics parties;
- the platform supplier, for monitoring your installation;
- the manufacturer of the equipment, only for a warranty claim and only with the data needed for it (device and fault data);
- advisers, such as our accountant, and authorities where the law requires it.
We do not give personal data to parties who want to approach you for their own products or services. We do not rent or sell your data.
Outside the EEA
Some of these suppliers are established in the United States or process data there. Such a transfer needs a legal basis, such as an adequacy decision of the European Commission or standard contractual clauses. On request we will tell you which basis applies to which supplier.
Security
We limit access to personal data to the staff who need it, and our websites use an encrypted connection (HTTPS). No storage or transmission is completely safe. If something goes wrong with your data, we report it to the Dutch Data Protection Authority within 72 hours where the law requires it, and we tell you if the risk to you is high.
Newsletter and email
Dysun Energy may send you a newsletter if you gave your email address for it or if you have become a customer. Every newsletter has an unsubscribe link. You can also unsubscribe through dysun@dysun.energy.
Your rights
You have the right to access your data, to correction, to deletion, to restriction of processing, to portability of data you gave us yourself, and to object to processing, including to direct marketing and to the robot check described above. If you gave consent, you can withdraw it at any time.
Send your request to dysun@dysun.energy or by post to Dysun Energy, Voltaweg 29, 6101 XK Echt, the Netherlands. If needed we ask you to confirm your identity, so that your data does not end up with someone else. You get an answer within one month. If that is not possible for a good reason, we tell you within that month, with the new deadline.
Complaints
If you do not agree with how we handle your request, please contact us first. You can also file a complaint with the Dutch Data Protection Authority (Autoriteit Persoonsgegevens) at autoriteitpersoonsgegevens.nl.
Changes
We change this policy when our processing changes. The date at the top shows when that last happened.