Privacy Policy

1. Controller

The controller within the meaning of the GDPR is the person named in the legal notice.

2. Overview

3. Hosting

This website is hosted by Hetzner Online GmbH, Industriestr. 25, 91710 Gunzenhausen, Germany. When you visit our website, the hosting provider automatically collects the following data in server log files:

• Truncated IP address
• Date and time of the request
• Page accessed
• Browser type and version
• Operating system
• Referrer URL

Legal basis: Art. 6(1)(f) GDPR (legitimate interest in the secure provision of the website). Log files are automatically deleted after 14 days.

4. SSL/TLS Encryption

This website uses SSL/TLS encryption for security reasons. You can recognize an encrypted connection by the lock icon in your browser's address bar and the "https://" prefix.

5. PVGIS API

To calculate solar irradiation, your browser directly calls the PVGIS API of the European Commission's Joint Research Centre. Your IP address is transmitted to the EU Commission's server.

Legal basis: Art. 6(1)(b) GDPR (contract fulfillment – the calculation is the main purpose of the service).

6. Website Analytics (Umami)

We use Umami, a privacy-friendly open-source analytics tool, to anonymously evaluate website usage. Umami:

• does not set any cookies
• does not store IP addresses
• does not create user profiles
• does not collect personal data
• respects your browser's "Do Not Track" setting

Only anonymous, aggregated data is collected (page views, referrers, browser type, country). No cookie banner is required as no cookies or similar technologies are used.

Legal basis: Art. 6(1)(f) GDPR (legitimate interest in improving the service).

7. Your Rights

You have the following rights regarding your personal data:

• Right of access (Art. 15 GDPR)
• Right to rectification (Art. 16 GDPR)
• Right to erasure (Art. 17 GDPR)
• Right to restriction of processing (Art. 18 GDPR)
• Right to data portability (Art. 20 GDPR)
• Right to object to processing (Art. 21 GDPR)

To exercise your rights, please contact us via the email address provided in the legal notice.

8. Right to Lodge a Complaint

You have the right to lodge a complaint with a data protection supervisory authority regarding the processing of your personal data. A list of supervisory authorities can be found at:

9. Changes

We reserve the right to update this privacy policy to reflect changes in the legal situation or changes to the service. The current version is always available on this page.