// multi-utility computation suite · offline · instant · precise
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eng.solar-irradiance Calculator
Calculates ideal and actual solar power output from irradiance, panel efficiency, area, and derating factors. A 20% efficient 1 m² panel at peak irradiance (1,000 W/m²) produces 200W — system losses (soiling, wiring, inverter) reduce this by 15–25%.
Inputs
Irrad
Reference formula or conversion factor shown for context.
Area M2
Two-dimensional surface extent (m²). For complex shapes, break into simpler sub-shapes and sum.
Eta
Useful output divided by total input, as a percentage. 100% is impossible due to losses (heat, friction, resistance).
Temp Loss
Thermal state of the substance. Check whether the formula needs Celsius, Fahrenheit, or Kelvin (K = °C + 273.15).
Results
ideal power
Reference formula or conversion factor shown for context.
actual power
Reference formula or conversion factor shown for context.
daily output (5hr sun)
Sample size or count used in the calculation.
efficiency loss
Useful output divided by total input, as a percentage. True 100% efficiency is impossible — losses appear as heat. LEDs: 30–50%. Electric motors: 85–97%. Switching supplies: 85–95%.