Question 9.10: Using utility structure A of Table 9.7, calculate the utilit......

Energy-Efficient Electrical Systems for Buildings [1086323]

Using utility structure A of Table 9.7, calculate the utility bill for a residence during a summer month when the energy use is $800 \ kWh.$

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Considering all the charges imposed by utility rate A (see Table 9.7), the monthly bill can be calculated as follows:

(a) Customer charge= $\$7.50$

(b) Energy charge= $400 \ kW*\$0.0874/kWh+400 \ kWh*\$0.1209/kWh=\$83.32$

(c) Fuel cost adjustment= $\$0.00$

(d) Taxes= $6.544\%[(a)+(b)+(c)]=\$5.94$

Total monthly charges = $(a)+(b)+(c)=\$96.76$

Thus, the average cost of electricity for the month is $\$96.76/800 \ kWh = \$0.12095/kWh.$

TABLE 9.7
An Electric Utility Rate with No-Demand Charges for Residential General Service (Utility Rate A)

Summer (May–Oct)	Winter (Nov–Apr)	Billing Item
7.50	7.50	Customer charge ($)
7.50	7.50	Minimum charge ($)
0.00	0.00	Fuel cost adjustment
6.544	6.544	Tax rate (%)
3	1	No. of energy blocks
400	0	Block 1 energy size (kWh)
400	0	Block 2 energy size (kWh)
800	0	Block 3 energy size (kWh)
0.0874	0.088	Block 1 energy charge ($/kWh)
0.1209	0.00	Block 2 energy charge ($/kWh)
0.1406	0.00	Block 3 energy charge ($/kWh)

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