Printable Solar Panel Sizing Workbook
This one-page Letter landscape workbook is for solar planning and rough system sizing. It includes a table for multiple scenarios with yearly kWh, peak sun hours, losses factor, panel wattage, cost per watt, incentive percent, and electricity price. The sheet calculates kW needed, number of panels, production in kWh, net cost, and payback years. Example rows include Chicago and Phoenix.
Free printable · PDF
- 1 page
- US Letter, landscape — choose “Fit to page” for A4
- PDF, 52 KB
Free for personal, family and classroom use.
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Use it to compare locations, panel sizes, and cost assumptions in one view. Fill in the inputs for each scenario, then read across the calculated columns to compare system size and payback. It works well as a planning worksheet before getting detailed quotes.
Good for
- Compare solar system sizes by city
- Estimate panel count from yearly usage
- Review payback under different assumptions
Tip: Print in landscape and keep the input columns visible when reviewing multiple scenarios.
4 files · XLSX, PDF, DOCX
Get every sheet: Solar Planning Pack
This sheet plus 3 more in one download, with the editable Excel and Word files. Excel solar sizing and payback workbook, a monthly production tracker, a site assessment checklist and a string wiring worksheet.
$5.00 USD, one-time 4 files · about $1.25 each
- Instant download
- 7-day refund
- Secure checkout by Stripe
7-day money-back guarantee. Full refund within 7 days of purchase, even after you download.
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