Solar Energy Yield Calculator
Turn an installed PV capacity and a stated solar-resource assumption into a transparent energy-yield scenario.
How to use this calculator
- Enter installed capacity, average peak-sun-hours per day, performance ratio and number of days.
- Check that every input uses the stated units and covers the same period, population or project scope.
- Change one assumption at a time when comparing scenarios.
Formula used by solar energy yield calculator
Energy ≈ capacity (kW) × peak-sun-hours/day × performance ratio
- Energy ≈ capacity (kW) × peak-sun-hours/day × performance ratio
- This is not a live forecast; weather, season, tilt, orientation, shading, clipping, temperature and system availability alter output.
- Inputs are validated against the tool-specific constraints; displayed results are rounded for readability.
Worked examples
Worked example
A 5 kW system at 3.8 peak-sun-hours and an 80% performance ratio estimates 15.2 kWh on the stated average day.
The calculator reports daily and period energy estimates for entered assumptions.
The calculator reports daily and period energy estimates for entered assumptions.
Understanding the result
Turn an installed PV capacity and a stated solar-resource assumption into a transparent energy-yield scenario.
This is not a live forecast; weather, season, tilt, orientation, shading, clipping, temperature and system availability alter output.
Important notes
This is not a live forecast; weather, season, tilt, orientation, shading, clipping, temperature and system availability alter output.
Treat the result as an estimate for the assumptions entered; verify important specifications against the relevant source or professional guidance.
Frequently asked questions
Where do peak-sun-hours come from?
Use a location-specific solar resource estimate for the site and period.
Does this guarantee daily production?
No. It is an average scenario based on the assumptions you enter.
How should I use this result?
Enter installed capacity, average peak-sun-hours per day, performance ratio and number of days.
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Related explanations
Learn the method behind the number or compare the terminology before using the calculator.
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This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.