This calculator evaluates how efficiently your solar system converts available solar energy into electricity, relative to its nominal energy output potential derived from module efficiency and irradiance conditions. Calculate Solar PR using the Efficiency-Based method. Specifically, the performance ratio is the ratio of the actual and theoretically possible energy outputs. It is calculated over a specific time interval, which can. . Typically, the system efficiency of a photovoltaic power plant can be calculated using the following formula: System Efficiency (%) = Actual Power Generation / Theoretical Power Generation × 100% Actual Power Generation: This refers to the actual amount of electrical energy generated by the. . The PR quantifies the actual output of a solar PV system compared to its theoretical maximum potential.
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