The current work presents techno-economic study, degradation analysis and performance assessment for seven consecutive years from 2013 to 2019 of 5 MW grid connected crystalline silicon solar photovoltaic (PV) power plant with monthly variation in tilt adjustment done manually in hot and dry climate of Gujarat, India. Hot spots, junction box melting, encapsulant discoloration, snail trails, corrosion of metallization and interconnects due to moisture ingression were among the main degradation modes and faults observed in large number of fielded PV modules with operational time of eight years. Various performance indices such as monthly mean reference yield, final yield, performance ratio (PR), capacity utilization factor (CUF) and PV system efficiency are calculated from recorded energy generation and environmental data and analyzed. Economic and Environmental analysis of the inspected plant in terms of payback period, levelized cost of electricity (LCOE) and mitigated CO₂ emission is also presented. PVSyst and Helioscope are the software simulation tools used for PV plant modeling, losses prediction and verification with the calculated performance indices. Possible causes, impact and corrective measures for various degradation mechanisms and failures observed in fielded PV modules are presented. Based on the findings by number of researchers globally and conducted performance and degradation analysis of the inspected plant, specific conclusion and key recommendations are enlisted.

当前的工作提出了从2013年到2019年连续7年对5 MW并网晶体硅太阳能光伏（PV）电厂进行的技术经济研究，退化分析和性能评估，在炎热和干燥的气候下，每月手动进行倾斜调节的变化印度古吉拉特邦。热点，接线盒熔化，密封剂变色，蜗牛痕迹，金属化腐蚀和由于水分进入而引起的互连线是主要的退化模式和故障，这些缺陷是在许多已运行八年的光伏组件中观察到的。根据记录的能源生产和环境数据计算各种性能指标，例如月平均参考产量，最终产量，性能比（PR），容量利用率（CUF）和光伏系统效率，并进行分析。还介绍了_2个发射。PVSyst和Helioscope是用于光伏电站建模，损耗预测和具有计算出的性能指标验证的软件仿真工具。介绍了在现场光伏组件中观察到的各种退化机制和故障的可能原因，影响和纠正措施。根据全球研究人员的调查结果，并对被检查的植物进行性能和降解分析，得出具体结论和关键建议。