Performance Ratio (PR) shows the percentage of total potential energy for the array that is converted to AC energy.
· Annual AC Energy to Grid: 158917 kWh · DC Size: 100 kW · Annual POA Irradiance: 1868.23 kWh/m2 We can calculate the performance ratio as 158917 / (1868.23 * 100) = 85.06% 



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