Solar Panel Calculator
Estimates daily and monthly energy production from a solar panel setup.
Planning a solar installation? Lilu Baba's Solar Panel Calculator estimates realistic daily and monthly energy output from your panel specs and local sun hours.
How to use this calculator
- Enter each panel's wattage and how many panels you have.
- Enter your location's average peak sun hours per day.
- Enter system efficiency (accounts for inverter and wiring losses) — estimated output updates instantly.
Estimated Daily Output (kWh)
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Estimated Monthly Output (kWh)
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FAQ
Solar Panel Calculator — frequently asked questions
The equivalent number of hours per day when sunlight intensity averages 1000 W/m² — check regional solar irradiance data for your area's typical value.
Real-world solar systems lose some energy to inverter conversion, wiring, temperature and dust — 75-85% efficiency is a common real-world estimate.