Enter metered AC energy, array size, the sensor's plane-of-array reading and the modelled performance ratio for the same period. Add a known or suspected sensor error (positive means the sensor reads high). Use whole numbers, a decimal point or a decimal comma. A check aid, not a guarantee basis. The preset uses invented numbers.
PR from the sensor reading: -
PR if the sensor error is corrected: -
Expected energy from the sensor reading: - kWh
Shortfall vs expected, as the sensor shows it: -
Shortfall vs expected, with the error corrected: -
Sensor error that would put the plant exactly on target: -
Shortfall is positive when measured energy is below expected. The error is treated as a simple gain error on the reading.