How this calculator works
- Collect electricity usage, system cost, and expected savings inputs.
- Estimate the monthly reduction in bill cost and the rough payback period.
- Pair the numbers with plain assumptions and links to related tools.
Worked example
A future version can compare the current electricity bill against a projected post-solar bill and show a simple payback timeline.
Important assumptions
- Installer quotes, maintenance costs, and financing are not yet modeled.
- Electricity tariffs will affect the savings output.
- Actual solar production varies by usage pattern and site conditions.
FAQ
Are these calculators free?
Yes. lankacalculator tools are free to use and designed to be quick to access without sign-up.
How accurate are the results?
The calculators use clear assumptions and formulas, but results are estimates and should be checked against official documents or provider terms.
Can I use this on mobile?
Yes. The layout is built to work cleanly on phones, tablets, and desktops.
Do you store my inputs?
No account is required for these tools, and calculator inputs are not stored as user profiles in this v1 setup.