The system produces electricity by solar energy consists of Solar panels the size of all capacity of approximately 987.84 kW installed on the roof, the building area is a sq m 8105 installation connect distribution system (Grid connected system) and using solar cells, the type that is the total crystalline (Poly Crystalline Silicon) solar panel using both cells, 4032 hom.The installation consists of 8 series (String) with 4 sets (String) using solar cells per well, another Panel 4 20 series (string) using solar cells per well per Panel, 22 combined into groups (Array) of each group will be plugged into the inverter (Inverter) dimensions of a 2 500 kW inverter power system connection type and dot calculations cover costs of solar power systems by using the FIT rate is THB 6.16 the electric unit purchase so the point to cover costs of solar electricity generation system with about 7-8 years.