Question

Question (2) [10 Marks] Meter Charge: $760/billing period Energy Charge $0.06 for the first 100,000 kwh $0.07 for the next 300,000 kWh $0.08 for all remaining kwh $6.5 per kw demand charge per billing period. Peak demand charges are leveled on customers only during the peak demand period which is from 8:00 AM to 6:00 PM Weekdays A 20% energy charge fee is added to the total energy charges (energy only) if the power factor of the plant is below 0.6. What are the customer's bill for the four month period if the power factor over the year is 90%? What is the additional cost paid if power factor is 50%? Month Electric Energy consumption Peak demand 245000 1291 Jan Feb 405387 1743 602784 2890 March 515908 2290 April

Answer 1

Working Note 1

Month Calculation of Energy Charge Electric energy consumption First 100,000 KWH @ $0.06 Next 300,000 KWH @ $0.07 Remaining KWH @ $0.08 Total 2,45,000.00 $ 6,000.00 $ 10,150.00 $ $ 16,150.00 4,05,387.00 $ 6,000.00 $ 21,000.00 $ 430.96 $ 27,430.96 6,02,784.00 $ 6,000.00 $ 21,000.00 $ 16,222.72 $ 43,222.72 5,15,908.00 $ 6,000.00 $ 21,000.00 $ 9,272.64 $ 36,272.64 Feb Mar Apr

Working Note 2

Month Calculation of peak demand charge Peak Demand Chrarge @ $6.5 1,291.00 $ 1,743.00 $ 2,890.00 $ 2,290.00 $ Feb 8,391.50 11,329.50 18,785.00 14,885.00 Mar Apr

Answer 1

Month Jan Feb Mar Total Charge when power factor is 90% Energy Charge (A) Peak demand charge (B) Meter Charge (C) I $ 16,150.00 $ 8,391.50 $ 27,430.96 $ 11,329.50 $ 43,222.72 $ 18,785.00 $ 36,272.64 $ 14,885.00 $ Total Charge 760.00 $ 760.00 $ 760.00 $ 760.00 $ 25,301.50 39,520.46 62,767.72 51,917.64 1,79,507.32 Apr Is

Answer 2

Energy Charge (A) Total Charge when power factor is 50% Peak demand charge (B) Meter Charge (C) Energy Charge fee (A x 20%) Total Charge 16,150.00 $ 8,391.50 $ 760.00 $ 3,230.00 $ 28,531.50 27,430.96 $ 11,329.50 $ 760.00 $ 5,486.19 $ 45,006.65 43,222.72 $ 18,785.00 $ 760.00 $ 8,644.54 $ 71,412.26 36,272.64 $ 14,885.00 $ 760.00 $ 7,254.53 $ 59,172.17 $ 2,04,122.58