2.2KW Solar powered pumping system in Thailand

Installation site: Thailand
Solar irradiation:   5  kWh/m2/d
Solar array:  250W*13  kW
Pump power:  2.2KW
Head: 35 m 
Flow: 12  m3/h
Daily water flow: 60 m3
Water flow annually:  21900 m3
Electricity output annually:  4864 kWh
Saved diesel annually:  1.2 t