Abstract
Photovoltaic (PV) technology projects operate for 25–30 years under different climatic conditions. However, for consistent economic returns, the system performance has to be assessed regularly. As per international standards, indicators and tests are prescribed to ensure reliable PV plant performance. In this study, performance analysis of a 400 kWp grid-connected solar plant with 10 subsystems is carried out, in a western Himalayan location of India. The annual solar power generation is found to be 431,088.539 kWh which is significantly low due to non-optimized installation and other factors. The minimum and maximum performance ratio of PV subsystems, are found to be 37 % and 92 % respectively. The total performance ratio of the plant is found to be 68 % which is relatively low as compared to similar PV plants installed in India. The average maximum power generated by a subsystem installed at near optimum tilt angle is found to be 4kWh/day/kWp, signifying the relevance of optimized system installation. The results show that the optimized PV panel tilt and orientation correction will lead to enhance energy production by 7.22 % and all corrective measures to identified factors will enhance the solar power generation by 121,833 kWh/year and reduction of 113 tons CO2 emissions.
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