Free · Operations · No account needed
Solar savings calculator
Estimate annual electricity value and simple payback using your own generation and tariff assumptions.
No account needed. Nothing is saved automatically.
Your inputs
Starting values are examples, not recommended rates.
Your estimate
- Estimated annual generation
- 5,840kWh/year
- Annual net electricity value
- 29,704USD
- Simple payback
- 10.1years
A simplified estimate, not a site simulation or guaranteed saving. No subsidy is assumed. Shading, seasonal use, fixed utility charges, degradation, financing and local export rules can materially change the result.
How this tool works
Annual generation = kW × daily peak-sun hours × 365 × performance ratio. Value = self-used energy × import tariff + exported energy × export tariff − annual maintenance.
What should I check before using the result?
A simplified estimate, not a site simulation or guaranteed saving. No subsidy is assumed. Shading, seasonal use, fixed utility charges, degradation, financing and local export rules can materially change the result.
PVWatts prediction limitationsDo free tools require an account?
No. Public UtilityHub tools open without an account. An account is required only when you want a workspace to save records, collaborate with a team or use paid product features.
Are the public tools really free?
Yes. The tools listed in the public tools directory are free to use. They do not start a subscription and do not ask for a card.
Are my files uploaded to UtilityHub?
Image and PDF pages state how each tool processes files. Where a page says browser processing, the work happens on your device. Always check the privacy note on the specific tool before adding a sensitive file.
Should I verify a downloaded result?
Yes. Open every downloaded file and confirm its dimensions, size, legibility and destination requirements. UtilityHub helps prepare a result but cannot verify the current rules of every external form or service.
Nothing is added to your business workspace unless you choose to continue there.
Annual generation = kW × daily peak-sun hours × 365 × performance ratio. Value = self-used energy × import tariff + exported energy × export tariff − annual maintenance.
A simplified estimate, not a site simulation or guaranteed saving. No subsidy is assumed. Shading, seasonal use, fixed utility charges, degradation, financing and local export rules can materially change the result.