Abstract
Investigated in this paper is the optimal capacity of photovoltaic systems (PV) from the economic point of view when connected to commercial power systems. Under the assumption that PV outputs at each time interval are given a priori the optimum size of PV capacity is determined as a function of their unit costs. The problem is of typical linear programming type but its solution was derived solely of theoretical analysis of the problem, first with the simplified assumption about system structure and time zones, and next expanded to more complex cases.
The results show that substantial reduction in PV cost is required to realize large scale use of PV in connection with the present power systems.
