Privacy Policy
Effective Date: June 2, 2026 · Last Updated: June 2, 2026
This Privacy Policy describes how Solar ROI Pro, operated by Solar ROI Pro (sole proprietorship registered in the Republic of Serbia), collects, uses, and discloses information from users at https://solarroi.pro.
1. Information We Collect
1.1 Information You Provide
- Calculation inputs: photovoltaic parameters you enter into the calculator (processed in real-time in your browser).
- Contact data: email address if you contact support.
- Payment information: handled exclusively by Lemon Squeezy, LLC (USA). We do not store credit card details.
1.2 Automatically Collected
- Usage data (pages viewed, session duration, referrer URL)
- Device data (browser type, OS, language preference)
- IP address (for security and geographic tariff selection)
2. How We Use Your Information
- Provide and improve the Solar ROI Pro service
- Process payments via Lemon Squeezy
- Respond to support inquiries
- Detect and prevent fraud
- Comply with legal obligations
We do NOT sell, rent, or trade your personal data to third parties.
3. Affiliate Links and Disclosure
Solar ROI Pro participates in affiliate programs including AliExpress Affiliate and Amazon Associates. When you click product links and make a purchase, we may earn a small commission at no additional cost to you. Our recommendations are based on technical merit, not commission rates.
By clicking affiliate links, you consent to tracking cookies set by third-party retailers, governed by their privacy policies.
4. Cookies
| Type | Purpose | Duration |
|---|
| Strictly necessary | Session management, calculator state | Session |
| Functional | Language preference, tariff region | 1 year |
| Analytics (anonymized) | Aggregate usage stats | 13 months |
| Affiliate tracking | Third-party retailers | Set by third party |
5. Your Rights (GDPR / CCPA)
You have the right to access, rectify, erase, port, or object to processing of your data. To exercise these rights, contact support@solarroi.pro. We respond within 30 days.
6. Data Retention
- Calculation inputs: not retained unless saved (deleted after 90 days inactivity)
- Payment records: 7 years (tax compliance)
- Support correspondence: 3 years
7. Contact
Email: support@solarroi.pro
Operator: Solar ROI Pro (sole proprietorship, Republic of Serbia)
Response time: 5 business days