Review criteria
- +System cost from size and price-per-watt
- +Incentive and tax-credit columns
- +Net price and payback math
- +Works in Google Sheets and Excel
Solar Proposal Calculator in Solar Installer
The Solar Proposal Calculator is a copy-ready spreadsheet for solar installer that tracks system size, cost, incentives, price, payback. It opens unchanged in both Google Sheets and Excel, needs no add-ons or macros, and takes about 15 minutes to set up.
Last updated: August 2026
Excel workbook · opens in Google Sheets · 3 tabs · no sign-up
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Live preview of “Solar Proposal Calculator”
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What’s inside “Solar Proposal Calculator”
Tabs: How to use · System · ProposalFormat: Excel (.xlsx) · opens in Google SheetsSetup: About 15 minutesColumns: 5
Columns (grey = calculated for you)
- Item
- Qty
- Unit
- Unit price
- Line total
- Open the System tab and replace the sample rows with your own — one row per entry. Formulas fill in automatically for new rows.
- Price the system per watt and add adders (battery, critter guard, panel upgrade) as lines.
- Payback is simple (no rate increases or degradation); incentives change, so confirm current credit and rebate rules before quoting.
- Using Google Sheets? Upload the file to Google Drive, then open it with Google Sheets (or File → Import in an open sheet). Formulas, dropdowns and highlights carry over.
The file opens locally on your device — nothing is uploaded, and you own the copy outright.
Solar Proposal Calculator
About this template
It is built for people who want results without another subscription: solar installers quoting residential systems. The whole template is free to copy — there is no paid tier. Because it is a plain spreadsheet, you own your data outright and can shape every column to how you actually work.
Review evidence
What to verify before choosing Solar Proposal Calculator
Use the review criteria below to decide whether this template fits your workflow.
Often worth considering when
- +Solar installers quoting residential systems
- +Anyone showing net cost after incentives
Pause before choosing when
- -Shading and production modeling
- -Live utility-rate feeds
About Solar Installer
Why people consider this option
- +Build proposals and track installs without paid solar software
- +Show savings math clients can follow
- +Keep the install pipeline organized
What to review before acting
- -No shading analysis or permit automation
- -Scaling installers eventually need design software
Trust FAQ
Questions people ask before copying a template
Does the Solar Proposal Calculator work in both Google Sheets and Excel?
Yes. It is built with standard functions and no macros, so it opens and works the same in Google Sheets or Microsoft Excel — on desktop or your phone.
Is the Solar Proposal Calculator really free?
The core template is free to copy and use. There is no paid tier — download the Excel workbook, replace the sample rows with your own, and you are ready to work.
What does the Solar Proposal Calculator track?
It tracks system size, cost, incentives, price, payback. The workbook comes with these columns plus the formulas, dropdowns and highlights already set up. Replace the sample rows and the totals update as you go.