Solar Photovoltaic
PV system energy yield calculator
| Wp | |
| degrees |
| R | Tf | Eg | |
| Daily mean solar irradiation (kWh/m2) |
Tilt factor to be used | Mean energy yield per day |
|
| JAN | kWh | ||
| FEB | kWh | ||
| MAR | kWh | ||
| APR | kWh | ||
| MAY | kWh | ||
| JUN | kWh | ||
| JUL | kWh | ||
| AUG | kWh | ||
| SEP | kWh | ||
| OCT | kWh | ||
| NOV | kWh | ||
| DEC | kWh | ||
| annual energy yield | kWh | ||
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This is a simple calculator for appreciating the year-round performance of a PV array. It is not intended to be a design tool because simplifying assumptions have been made.
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The overall loss/correction factor is for taking into account cable loss, converion (inverter) loss, mismatch loss, and reduction in output due to rise in cell tempeatures and pollution of panel surface. Loss due to shading effect should be dealt with using shading analysis technique.
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Daily mean solar irradiation figures are based on data of King's Park weather station.
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The formula for Eg is:
Eg = P x N x R x Tf x Lf / 1000