Solar Panel Calculator
Estimate solar-array wattage and panel count from daily energy and peak sun hours.
Result
Complete the fields to calculate.
Formula and method
Wsolar = Wh/día / (horas solares × eficiencia)
Important assumptions
Peak sun hours are not daylight hours. Weather, orientation, shade, and temperature affect output.
Frequently asked questions
Does the calculation run locally?
Yes. Values are processed in your browser and are not sent to a server.
Can I use it for a real installation?
Use it as an educational reference and verify components, tolerances, safety, and applicable code with technical documentation or a qualified person.
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