example 20.1   
(a)
economic power factor 0.927lagging 
(b) 
capacitor kVAr to improve the power factor 0.3979 
(c) 
initial kVA 1282.05KVA 
annual energy used 7.008e+009kWh 
electrical bill Rs2.452826e+010 per year
(d)
KVA after installation of capacitors 1078.75KVA 
energy bill after installation of capacitor Rs2.452822e+010 per year 
annual interest and depreciation of capacitor bank Rs29842.5per year 
total expendition after installation of capacitors Rs2.452825e+010 per year 
 annual savings due to installation of capacitors Rs10817 per year