 
 example 4 6   
 
 a   
maximum demand 65.72kW 
 yearly bill Rs.526164 per year 
(b)
 maximum demand 41.82kW 
 yearly bill Rs.497486per year 
 c   
 new energy 151125kWh 
 maximum demand 49.29kW 
 yearly bill Rs.395623per year 
 average energy cost in case a Rs2.6112per kWh 
 average energy cost in case b Rs2.469per kWh
 average energy cost in case c Rs2.618per kWh  