Review criteria
- +Estimated bill offset and monthly savings
- +Lifetime savings and ROI math
- +Rate-escalation assumptions
- +Works in Google Sheets and Excel
Solar Savings Estimator in Solar Installer
The Solar Savings Estimator is a copy-ready spreadsheet for solar installer that tracks usage, rate, offset, monthly savings, roi. It opens unchanged in both Google Sheets and Excel, needs no add-ons or macros, and takes under 10 minutes to set up.
Last updated: August 2026
Excel workbook · opens in Google Sheets · 3 tabs · no sign-up
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What’s inside “Solar Savings Estimator”
Tabs: How to use · Usage · EstimateFormat: Excel (.xlsx) · opens in Google SheetsSetup: Under 10 minutesColumns: 5
Columns (grey = calculated for you)
- Month
- Usage (kWh)
- Est. solar production (kWh)
- Offset
- Bill savings
- Open the Usage tab and replace the sample rows with your own — one row per entry. Formulas fill in automatically for new rows.
- Enter 12 months of usage from the bill and production from a modeling tool (such as PVWatts) for the actual roof.
- This is an estimate: rates, export credits, shading and degradation change results. Do not promise savings; tax credit eligibility depends on the customer's own tax situation.
- 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 Savings Estimator
About this template
It is built for people who want results without another subscription: installers showing customers their savings. It is completely free — copy it and it is yours to keep. 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 Savings Estimator
Use the review criteria below to decide whether this template fits your workflow.
Often worth considering when
- +Installers showing customers their savings
- +Homeowners sanity-checking a solar quote
Pause before choosing when
- -Official production guarantees
- -Live utility tariff data
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 Savings Estimator 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 Savings Estimator really free?
Yes, it is completely free to copy and keep. There is no account, paywall, or trial.
What does the Solar Savings Estimator track?
It tracks usage, rate, offset, monthly savings, roi. 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.