TABLE 2-10 NOx and SO2 Emissions (2002) from Coal-Fired Electricity Generation by Age of Power Plant

a. 2002 NOx Emissions and Share of Generation of Coal-Fired Capacity by Vintage

Power Plant Established

Avg. NOx Emission Rate (lb/MWh)

% Total NOx Emitted

% of Coal-Fired Electricity Generation

% of NOx Emitted per % of Electricity Generateda

% of Coal-Fired Electricity Capacity

Pre-1950

5.51

0.65

0.50

1.31

0.92

1950-1959

5.07

15.11

12.56

1.20

14.32

1960-1969

4.56

21.27

19.65

1.08

20.51

1970-1979

4.28

39.31

38.76

1.01

38.13

1980-1989

3.53

21.74

25.97

0.84

23.84

Post-1990

3.15

1.92

2.56

0.75

2.27

b. 2002 SO2 Emissions and Performance of Coal-Fired Capacity by Vintage

Power Plant Established

Avg. SO2 Emission Rate (lb/MWh)

% of Total SO2 Emitted

% of Coal-Fired Electricity Generation

% of SO2 Emitted per % of Electricity Generateda

Average Capacity Factor (%)b

Average Heat Rate (Btu/kWh generated)

Pre-1950

20.58

1.02

0.50

2.04

36.35

12,549

1950-1959

15.78

19.64

12.56

1.56

58.93

10,668

1960-1969

13.92

27.12

19.65

1.38

64.37

10,150

1970-1979

9.31

35.75

38.76

0.92

68.29

10,270

1980-1989

6.02

15.49

25.97

0.60

73.17

10,401

Post-1990

3.88

0.98

2.56

0.38

75.80

9,982

c. 2002 NOx Emissions and Share of Generation of Coal-Fired Capacity by NSPSc

NSPS Status According to EIA 767

Avg. NOx Emission Rate (lb/MWh)

% Total NOx Emitted

% of Coal-Fired Electricity Generation

% of NOx Emitted per % of Electricity Generateda

% of Coal-Fired Electricity Capacity

Unknown

2.93

0.16

0.23

0.69

0.27

Not Affected by NSPS

4.67

65.90

59.51

1.11

62.62

Subject to Aug. 1971 Standards (D)

3.57

26.73

31.58

0.85

29.56

Subject to Sept. 1978 Standards (Da)

3.50

7.21

8.68

0.83

7.56



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