Pro
Pro: the printable solar sizing report
One sheet built from the numbers you typed in the free tools: inputs, system size, panels and roof area, production by month, cost, incentive, payback and the 25-year cash flow, each figure with its source. Printed, saved as PDF or exported to Excel, in your browser.
- Monthly $4.99/month
- Lifetime $19 once
What Pro adds
One sheet, your numbers
The sizing, output and payback results you already have, laid out together with the assumptions behind them, so a quote can be checked line by line.
Sources on the page
Sun hours, losses, panel size, cost, price and incentive each carry the publisher, the figure and the date it was read: a neutral basis, not a sales pitch.
Print, PDF or Excel
The browser's own print dialog for paper or PDF; a workbook with Sizing, Cash flow and Sources sheets for your own changes.
Stays in your browser
Inputs are kept in this browser only. No account, no email required, nothing sent to a server.
Free or Pro
| Feature | Free | Pro |
|---|---|---|
| Three calculators, results on screen | Yes | Yes |
| Sources under every starting value | Yes | Yes |
| 25-year table on the payback page | Yes | Yes |
| One report with all three results and the sources | No | Yes |
| Production by month in the report | No | Yes |
| Print or save as PDF | No | Yes |
| Excel workbook (Sizing, Cash flow, Sources) | No | Yes |
Frequently asked questions
- Is Pro a subscription?
- It depends on the plan you pick above. A monthly plan renews until you cancel it from the Manage subscription link shown once Pro is open; a one-time purchase is paid once and stays open for good.
- Do I need an account?
- No. You pay on Stripe's page and come back here; Pro opens in this browser and stays open. For another browser or device, ask for your access link by email on this page.
- What about VAT or sales tax?
- Stripe is the merchant of record. Any tax that applies where you are is shown at checkout, and the receipt or invoice comes from Stripe by email.
- Can I get a refund?
- Pro opens the moment you pay. If it does not do what this page says, write within 14 days and you get a full refund. Details on the refund policy page.
- What do you store about me?
- Nothing on our servers. The checkout reference and the answer from the verification service are kept in this browser's local storage; the email you type at checkout goes to Stripe for the receipt and lets you reopen Pro elsewhere.