The relationship between solar radiation indices and power generation efficiency were quantitatively studied in the fishery-solar hybrid photovoltaic power station in Baoying,Jiangsu.The results showed that solar radiation significantly impacted the power generation efficiency with visible seasonal fluctuations.Specifically,the daily peak of grid connected power and the power generation capacity were larger and more stable in summer and autumn,compared with those in winter and spring.Obvious logarithmic/linear correlation was observed between solar radiation indices and the daily peak grid connected power/daily power generation capacity,respectively.The daily peak of grid connected power and power generation capacity were correlated positively with average radiation,max radiation,and accumulated radiation in each month.The max radiation imposed the strongest influence on the peak value of grid-connected power,while the available sunshine hours showed the strongest influence on the monthly power generation capacity.The study indicated that average radiation,max radiation,and accumulated radiation should be taken as major indices in evaluating solar energy utilization and photovoltaic power station development.