Performance ratio (PR)
Chart
Basic info
Description | The performance ratio is calculated based on the system yield, installed DC power, and irradiation at the module plane. It indicates how well the PV system can convert solar energy. Typically, an annual PR value of 75-85% is considered good. |
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Prerequisites |
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Further details | Standard formula and calculation
If you wish to define the input parameters differently, see KPI editor for PR and system availability. PR chart settings Define green, yellow, and red thresholds specific to each system. These settings are reflected in the Performance ratio and Performance ratio comparison charts. |