Photovoltaic system generation cost analyze
As we know, Initial investment of photovoltaic?system cost is high, operation and maintenance cost is low , So the cost ofphotovoltaic?system should be its total expenses and total benefit in its life cycle. We need take policy subsidy into account , it can offset some cost of on-grid tie?photovoltaic?system.
The life cycle cost of on-grid tie?photovoltaic?system=investment + Operation & maintenance-policy subsidy. Among them, investment cost include photovoltaic?module , inverter, power?distribution?cabinet ,holder ,cable and so on. Also some other materials expenses and transport fees. Operation and maintenance include staff salaries, electrical equipment maintenance just like the? inverter, cleaning?charge like photovoltaic?module. Its Operational period is about 20-30 years and it enjoys subsidies from government during this period. Photovoltaic?system is very different from Coal-fired power generation, it hasn’t any thermal residue and get all its energy from the sun. ?Equipments in this system? have 20 years lifetime, compare to conventional power generation system, it spend more less on its maintenance.
Efficiency of Photovoltaic?system is in direct proportion to its generating capacity. There are many factors affect its?capacity, they are photovoltaic components rated capacity, the solar radiation, photovoltaic system efficiency. Photovoltaic components rated capacity is the output peak power in the standard test conditions , and this standard condition is different from the reality, and its reality generating capacity depend on the present solar radiation. Moreover, photovoltaic?systemoutput efficiency include various losses and equipment aging.
Photovoltaic?system generating is also affected by the weather. So we need to take account of the rainy days.