Economy comparison is required in determining which is preferred

development of distant ground photovoltaic(PV)power stations or distributed photovoltaic stations. Should it be focusing on the regional centralized PV stations or basing oneself on the locally available traditional method of cost calculation

the power generation

transmission and distribution topology model of distant ground PV power station or distributed PV stations is proposed by considering the total cost of different PV stations. The transfer efficiency in the process of power generation

transmission and distribution is analyzed. By integrating the PV system loss and power transmission and distribution cost into the PV power usage cost

a calculating model is built for evaluating the efficiency and cost through the whole process of PV system power generation

transmission and distribution. Actual cases are used to exhibit the detailed comparison process. Results show that the difference in PV cost is affected mainly by the light hours

electricity transmission and PV station unit-capacity investment.