Formula
Array kW = daily kWh ÷ (peak-sun-hours × system efficiency).
ELECTRICAL CALCULATORS
Solar Panel Calculator
Estimate array size and panel count from daily electricity use.
HOW IT WORKS
How to use the Solar Panel Calculator
- Enter the requested values and select the appropriate units or options.
- Review the live result and breakdown.
- Copy or export the result for your notes, then verify consequential decisions.
Worked example
30 kWh/day with 5 sun hours and 80% efficiency needs about 7.5 kW.
Practical guidance
Measure carefully, keep units consistent and treat rounded quantities as planning estimates. Supplier specifications and professional requirements take priority.
Frequently asked questions
Is the Solar Panel Calculator free?
Yes. It runs in your browser without signup or a paid result screen.
Does Labureka store my input?
No tool input is sent to Labureka by the calculator code. Avoid entering sensitive information on shared devices.
How accurate is the result?
The calculation follows this documented method: Array kW = daily kWh ÷ (peak-sun-hours × system efficiency). Accuracy still depends on the inputs and assumptions.
Can I copy or export the result?
Yes. Use the copy and CSV buttons beside the result. QR tools also provide image downloads.