Privacy Policy
HelioCalc privacy: no account, no lead collection, no cross-site tracking. Calculator inputs stay in your browser.
Last updated: 2026-11-13.
What we collect
HelioCalc is a static website. There is no account system, no signup, no lead form, and no server-side processing of your calculator inputs. We do not ask for your name, address, email or utility account unless you choose to email us.
Local storage
The calculator saves your most recent inputs in your browser's local storage so the estimate is still there when you return. That data stays on your device and is never transmitted to us. Clearing your browser's site data removes it. A shareable link encodes the inputs in the URL fragment, which is not sent to the server as part of the page request.
Cookies and analytics
We do not set advertising cookies or use cross-site tracking. Hosting infrastructure may process standard request data (IP address, user agent, requested URL) for delivery and security; that is operated by our hosting provider under its own policy.
Third-party links
Guides link to primary sources such as IRS, EIA, NREL, DSIRE and utility program documentation. When you follow those links, their privacy policies apply. If affiliate links are introduced in the future, this policy and the affiliate disclosure page will be updated before they appear.
Contact
Questions about this policy: hello@heliocalculator.com.
Frequently asked questions
Are my inputs sent anywhere?
No. The calculation happens in your browser and the last estimate is stored locally on your device.
Do you use cookies?
We do not set advertising or cross-site tracking cookies. Your hosting provider may log standard request data for delivery and security.