Solar Generation Calculator
Short answer
Generation = kWp × performance ratio × peak sun hours × days. Enter your plant size and site figures.
Daily generation351kWh
Monthly (≈)10,530kWh
Annual (≈)1,28,115kWh
Generation = kWp × PR × peak sun hours × days. PR and sun hours are site-dependent.
Formula
Daily kWh = kWp × PR × peak sun hours · Annual = daily × 365
How it works
The performance ratio (typically ~0.75–0.82) accounts for real-world losses; peak sun hours capture site irradiance. Both are site-dependent.
Worked example
A 100 kWp plant at PR 0.78 and 4.5 sun hours makes ≈ 351 kWh/day, ≈ 128 MWh/year.
Frequently asked questions
- What is a good performance ratio?
- Well-designed plants often achieve around 0.75–0.82; the exact figure depends on climate, design and O&M.
Related resources
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