Privacy Policy

Introduction

SalderCheck is a free and independent tool that helps Dutch solar panel owners understand their financial situation after the net metering scheme ends in 2027. Your privacy is important to us.

This policy describes processing for the calculator, browser storage, Google Analytics and partner links. No name or email address is required to calculate results.

What data do we collect?

When you use our calculator, we temporarily process the following information to perform the calculation:

• Number of solar panels, power, orientation, and pitch
• Your consumption profile or annual consumption in kWh
• Your province (for regional solar irradiance data)

The server processes your inputs to calculate scenarios. Technical request information may appear in operational logs and caches. Closing the tab clears session storage; refreshing the page does not. Browser settings can restore sessions.

Cookies and Local Storage

We use a functional language cookie and browser storage for calculations. Google Analytics can also set analytics cookies (_ga and _ga_*). You can manage or delete cookies through your browser.

• Language preference (NEXT_LOCALE): Stores your language choice (Dutch or English)

Analytics and Statistics

We use Google Analytics 4 to measure website usage on saldercheck.nl. Our code does not send analytics from local development or staging.

Measurement includes:

• Viewed pages, technical browser/device information and cookie identifiers.
• Successful calculations, visible recommendations and partner-link clicks. A click is not a purchase.
• No raw household consumption, solar production, address or entered price data in our custom analytics events.
• Google processes this measurement data. Google signals and ad personalization are disabled in our tag.

Third Party Services

We display affiliate links to energy suppliers and battery sellers. When you follow a partner link:

• The supplier and affiliate network can measure the visit and any purchase under their own privacy policies.

We may receive a commission for an eligible purchase or switch. Links carry a campaign tag for site placement, language and sometimes battery model, not calculator inputs. The destination receives normal browser request information.

Your Rights

Under the GDPR (AVG in Dutch), you have the following rights:

• Access: ask which personal data about you is processed.
• Rectification: ask for inaccurate personal data to be corrected.
• Erasure: ask for personal data to be deleted where applicable.
• Right to object: object to data processing
• Right to complaint: file a complaint with the Dutch Data Protection Authority (Autoriteit Persoonsgegevens)

For questions or requests, contact info@saldercheck.nl. Explain which processing your request concerns; do not send unnecessary sensitive information.

Data Security

We take measures to protect data and the calculator:

• All communication via encrypted HTTPS connections
• No user account required for the calculator.
• Data minimization principle: we only collect what's strictly necessary

Changes to this Privacy Policy

We may update this privacy policy occasionally. The date of the last update is stated at the top. Significant changes will be clearly communicated on our website.

Questions?

If you have questions about this privacy policy or about how we handle your data, please contact us: