Greenbyte Documentation

Performance Ratio (IEC)

Description

Performance Ratio according to IEC-61724-1.

This calculation requires Irradiance, Energy, and Capacity in order to be calculated.

This signal is resolution-dependent.

Note

If the irradiance cut-in metadata is missing, a default of 20 will be used.

Technology

Solar

Equation

performance_ratio_iec_eq2.png
performance_ratio_iec_eq3.png
performance_ratio_iec_eq.png

where

E is Energy

P is Power

T is the device resolution in hours

I is the Solar irradiance reference for each time step

Icut-inis the Performance Irradiance Cut-In metadata field (default 20)

ISTC is irradiance used under Standard Test Conditions (1000 W/m2)

Pc is the capacity for the inverter

Inputs

performance_ratio_iec_inputs.png