1

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

2

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

1. Showing all steps in your calculations, determine the

3

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

1. Showing all steps in your calculations, determine the(a) BTUs needed to generate the electricity produced

by the power plant in 24 hours.

4

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

1. Showing all steps in your calculations, determine the(a) BTUs needed to generate the electricity produced

by the power plant in 24 hours.(b) Cubic feet of natural gas consumed by the power

plant each hour.

5

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

6

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

The power company is able to sell electricityat $50 per 500 kW-h. They pay a wholesaleprice of $5.00 per 1,000 cubic feet of naturalgas.

7

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

2. What environmental effect might the production ofelectricity through the burning of natural gas pose?

8

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

What’s the important information?

9

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

What’s the important information?natural gas

10

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

What’s the important information?natural gas 15 million kW-h per day

11

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

12

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h

13

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h

14

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

15

Energy CalculationsPRACTICE PROBLEM #1:A large, natural gas-fired electrical power facility produces15 million kilowatt-hours of electricity each day it operates.The power plant requires an input of 13,000 BTUs of heatto produce 1 kilowatt-hour of electricity. One cubic foot ofnatural gas supplies 1,000 BTUs of heat energy.

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

=1.0 ft3/1.0 x 103 BTUs

16

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

=1.0 ft3/1.0 x 103 BTUs1. Showing all steps in your calculations, determine the

(a) BTUs needed to generate the electricity producedby the power plant in 24 hours.

17

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

=1.0 ft3/1.0 x 103 BTUs1. Showing all steps in your calculations, determine the

(a) BTUs needed to generate the electricity producedby the power plant in 24 hours.

18

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

=1.0 ft3/1.0 x 103 BTUs1. Showing all steps in your calculations, determine the

(a) BTUs needed to generate the electricity producedby the power plant in 24 hours.24 hours = 1 day

19

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

=1.0 ft3/1.0 x 103 BTUs1. Showing all steps in your calculations, determine the

(a) BTUs needed to generate the electricity producedby the power plant in 24 hours.24 hours = 1 day

1.5 x 107 kW-h/day x

20

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

=1.0 ft3/1.0 x 103 BTUs1. Showing all steps in your calculations, determine the

(a) BTUs needed to generate the electricity producedby the power plant in 24 hours.24 hours = 1 day

1.5 x 107 kW-h/day x 1.3 x 104 BTUs/1 kW-h

21

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

=1.0 ft3/1.0 x 103 BTUs1. Showing all steps in your calculations, determine the

(a) BTUs needed to generate the electricity producedby the power plant in 24 hours.24 hours = 1 day

1.5 x 107 kW-h/day x 1.3 x 104 BTUs/1 kW-h

= 1.95 x 1011 BTUs/day

22

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

=1.0 ft3/1.0 x 103 BTUs1. Showing all steps in your calculations, determine the

(b) Cubic feet of natural gas consumed by the powerplant each hour.

23

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

=1.0 ft3/1.0 x 103 BTUs1. Showing all steps in your calculations, determine the

(b) Cubic feet of natural gas consumed by the powerplant each hour.

FROM PART (a):

24

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

=1.0 ft3/1.0 x 103 BTUs1. Showing all steps in your calculations, determine the

(b) Cubic feet of natural gas consumed by the powerplant each hour.

FROM PART (a):1.95 x 1011 BTUs/day x

25

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

=1.0 ft3/1.0 x 103 BTUs1. Showing all steps in your calculations, determine the

(b) Cubic feet of natural gas consumed by the powerplant each hour.

1.95 x 1011 BTUs/day x 1 day/24 hrs x

26

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

=1.0 ft3/1.0 x 103 BTUs1. Showing all steps in your calculations, determine the

(b) Cubic feet of natural gas consumed by the powerplant each hour.

1.95 x 1011 BTUs/day x 1 day/24 hrs x 1 ft3/1.0 x 103 BTUs

27

What’s the important information?natural gas 15 million kW-h per day =1.5 x 107 kW-h/day

13,000 BTUs per 1 kW-h =1.3 x 104 BTUs/1 kW-h 1.0 ft3 of natural gas per 1,000 BTUs

=1.0 ft3/1.0 x 103 BTUs1. Showing all steps in your calculations, determine the

(b) Cubic feet of natural gas consumed by the powerplant each hour.

1.95 x 1011 BTUs/day x 1 day/24 hrs x 1 ft3/1.0 x 103 BTUs

= 8.125 x 106 ft3/hr

28

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

29

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

30

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

31

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

CH4(g) +

32

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

CH4(g) + O2(g)

33

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

CH4(g) + O2(g) CO2(g) +

34

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

CH4(g) + O2(g) CO2(g) + H2O(g)

35

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

CH4(g) + O2(g) CO2(g) + 2 H2O(g)

36

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g)

37

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g)

Recall from chemistry:

38

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g)

Recall from chemistry: when gases react and there isno change in pressure and temperature, molecoefficients can be replaced by volumes.

39

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g)

Recall from chemistry: when gases react and there isno change in pressure and temperature, molecoefficients can be replaced by volumes.

FROM PART (b):

40

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g)

Recall from chemistry: when gases react and there isno change in pressure and temperature, molecoefficients can be replaced by volumes.

FROM PART (b): 8.125 x 106 ft3 CH4/hr x

41

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g)

Recall from chemistry: when gases react and there isno change in pressure and temperature, molecoefficients can be replaced by volumes.

8.125 x 106 ft3 CH4/hr x 24 hr/1 day x

42

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g)

Recall from chemistry: when gases react and there isno change in pressure and temperature, molecoefficients can be replaced by volumes.

8.125 x 106 ft3 CH4/hr x 24 hr/1 day x 1 ft3 CO2/1 ft3 CH4

43

1. Showing all steps in your calculations, determine the(c) Cubic feet of carbon dioxide gas released by the

power plant each day. Assume that methanecombusts with oxygen to produce only carbondioxide and water vapor and that the pressuresand temperatures are kept constant.

CH4(g) + 2 O2(g) CO2(g) + 2 H2O(g)

Recall from chemistry: when gases react and there isno change in pressure and temperature, molecoefficients can be replaced by volumes.

8.125 x 106 ft3 CH4/hr x 24 hr/1 day x 1 ft3 CO2/1 ft3 CH4

= 1.95 x 108 ft3 CO2/day

44

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

The power company is able to sell electricityat $50 per 500 kW-h. They pay a wholesaleprice of $5.00 per 1,000 cubic feet of naturalgas.

What’s the important information?

45

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

The power company is able to sell electricityat $50 per 500 kW-h. They pay a wholesaleprice of $5.00 per 1,000 cubic feet of naturalgas.

What’s the important information?Customers pay $50 per 500 kW-h

46

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

The power company is able to sell electricityat $50 per 500 kW-h. They pay a wholesaleprice of $5.00 per 1,000 cubic feet of naturalgas.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas

47

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

The power company is able to sell electricityat $50 per 500 kW-h. They pay a wholesaleprice of $5.00 per 1,000 cubic feet of naturalgas.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

48

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much does the power company make in one year?

49

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much does the power company make in one year?

1.5 x 107 kW-h/day x

50

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much does the power company make in one year?

1.5 x 107 kW-h/day x 365 days/year x

51

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much does the power company make in one year?

1.5 x 107 kW-h/day x 365 days/year x $50/500 kW-h

52

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much does the power company make in one year?

1.5 x 107 kW-h/day x 365 days/year x $50/500 kW-h

= $547,500,000 year ($547.5 million)

53

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much natural gas did the power company use in 1 year?FROM PART (b):

54

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much natural gas did the power company use in 1 year?FROM PART (b):

8.3 x 106 ft3 CH4/hr x

55

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much natural gas did the power company use in 1 year?

8.3 x 106 ft3 CH4/hr x 24 hrs/day x

56

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much natural gas did the power company use in 1 year?

8.3 x 106 ft3 CH4/hr x 24 hrs/day x 365 days/year

57

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much natural gas did the power company use in 1 year?

8.3 x 106 ft3 CH4/hr x 24 hrs/day x 365 days/year

= 7.12 x 1010 ft3 CH4/year

58

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much money did the power company spend for 1 year?

59

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much money did the power company spend for 1 year?FROM PREVIOUS CALCULATION:

60

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much money did the power company spend for 1 year?FROM PREVIOUS CALCULATION:

7.12 x 1010 ft3 CH4/year x

61

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much money did the power company spend for 1 year?

7.12 x 1010 ft3 CH4/year x $5.00/1.0 x 103 ft3 CH4

62

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much money did the power company spend for 1 year?

7.12 x 1010 ft3 CH4/year x $5.00/1.0 x 103 ft3 CH4

= $3.56 x 108/year ($356 million)

63

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much profit did the power company make?

64

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much profit did the power company make?

$5.475 x 108/year ($550 million) from customers

65

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much profit did the power company make?

$547,500,000 year from customer- $356,000,000 year cost of CH4

66

1. Showing all steps in your calculations, determine the(d) Gross profit per year for the power company.

What’s the important information?Customers pay $50 per 500 kW-hPower company pays $5.00 per 1,000 cubic feet of

natural gas = $5.00/1.0 x 103 ft3 CH4

How much profit did the power company make?

$5.475 x 108/year ($550 million) from customers - $3.56 x 108/year ($370 million) cost of CH4

$1.92 x 108/year ($192 million) profit

67

2. What environmental effect might the production ofelectricity through the burning of natural gas pose?