Last updated: March 15, 2026
Solar Stack ("we", "our", "us") respects your privacy. This policy explains what data we collect, how we use it, and your rights regarding your personal information.
We collect information you provide when using our service: your Google or Telegram account profile (name and email) when you sign in, solar equipment specifications you upload or enter manually, and calculation parameters and results you save. We also automatically collect basic usage data such as browser type, device type, and pages visited through Vercel Analytics.
We use your data to provide the compatibility calculator service, save your equipment and calculation history, improve the accuracy of our extraction algorithms, and maintain service reliability. We do not sell your personal data to third parties.
We use essential cookies for authentication (session management). Vercel Analytics collects anonymous, aggregated performance data — no personal information is tracked. We do not use advertising cookies or third-party tracking pixels.
We use the following third-party services: Neon (database hosting), Vercel (application hosting and analytics), Anthropic Claude API (AI-powered datasheet extraction — uploaded PDF content may be sent to Anthropic for processing), and Google/Telegram (authentication). Each service has its own privacy policy governing their handling of data.
We implement industry-standard security measures to protect your data, including encrypted connections (HTTPS), secure authentication via OAuth providers, and database access controls. However, no method of electronic transmission or storage is 100% secure.
You have the right to access, correct, or delete your personal data at any time. You can delete your uploaded equipment and calculation history through the application interface. To request complete account deletion, contact us using the information below.
We may update this privacy policy from time to time. We will notify users of significant changes by updating the "Last updated" date at the top of this page. Continued use of the service after changes constitutes acceptance of the updated policy.
If you have questions about this privacy policy or your personal data, contact us at privacy@solar-stack.com.