Consider a solar PV plant with the following specific conditions:Analysis period: 1 yearMeasured average solar irradiation intensity in 1 year: 150 kWh/m²Generator area of the PV plant: 10 m² Efficiency factor of the PV modules: 15%Electrical energy actually exported by plant to grid: 135 kWhCalculate the performance ratio.

• A. 50%
• B. 80%
• C. 75%
• D. 60%

Answer: (D)

Where,
A - total solar panel area in meter square.
r - efficiency of solar panel
h - solar installation per meter square area.

Solar panel performance ratio = Actual energy (kWh)/(A*r*h)
= (135/(0.15*10*150))
= 0.60
= 60 % (in percentage)