Your solar plan data

Calculations

Calculations run in your browser without an account, bill upload, real name, address or bank details. This site uses Google Analytics to understand usage. Do not include personal information in plan names or shared links.

Saving and sharing

Save all plans stores names, order and assumptions in this browser’s localStorage. Clearing site data deletes them. Shared links contain plan names and figures in the URL, visible to anyone with the link. URLs may appear in browser history or hosting access logs. Do not include personal information in plan names or links.

Switching language temporarily keeps the current calculator plans in this tab’s sessionStorage, then removes the draft after restoration. If browser storage is disabled, a supported-size plan may be carried in the destination URL.

PDF reports

PDFs are created in your browser from selected plans. Preparer, customer, contact and notes are optional and used only in the report, not saved plans or shared links. The site does not send these details to an external PDF service. Recipients can see everything included in the file.

AI tools

Copy Prompt places instructions, assumptions and results on your device clipboard without sending them to AI, and omits custom appliance names from the usage helper. If automatic copying fails, text is shown for manual copying. When you paste and submit it to an external AI service, that provider’s policy applies.

External sources

Community links and official notices lead to external sites with their own privacy policies. Some posts may require login or become unavailable later.