Emissions (Tons)

  Hg

  43

  46

  44

  45

  45

  42

  44

  SO₂ (Millions)

12.7

9.7

9.7

9.7

8.9

8.9

8.9

  NO_x (Millions)

  5.7

4.3

4.2

4.3

4.5

4.1

4.4

  CO₂^a

556

693

638

677

777

640

721

Allowance Prices (1999 Dollars)

  Hg (per Pound)

NA

NA

NA

NA

NA

NA

NA

  SO₂ (per Ton)

207

   187

   170

   176

   241

   147

   190

  NO_x (per Ton)

NA

4,391

4,516

4,451

5,037

5,625

5,491

  CO₂ (per Ton)^b

NA

NA

NA

NA

NA

NA

NA

Electricity Price
(1999 Cents per Kilowatthour)

6.66

6.14

6.33

6.17

6.21

6.47

6.22

Generation by Fuel (Billion Kilowatthours)

  Coal

1,893

2,297

2,157

2,250

2,366

2,090

2,246

  Oil and Other

   106

     50

     42

     45

     49

     39

     43

  Natural Gas

   593

1,085

   919

1,051

1,813

1,258

1,597

  Nuclear

   734

   725

   725

   725

   613

   613

   613

  Renewable

   401

   440

   731

   520

   452

1,252

   787

    Total

3,728

4,597

4,573

4,591

5,294

5,252

5,286

Emissions Controls (Cumulative Gigawatts of Generating Capability with Controls Added)

  Scrubbers^c

0

  7

  6

  6

15

  10

10

  SCR

0

93

97

94

93

100

94

  SNCR

0

26

20

24

43

  39

47

^aMillion metric tons carbon equivalent.

^b1999 dollars per metric ton carbon equivalent.

^cAn additional 2.7 gigawatts of retrofits are planned during 2000-2002.

NA = not applicable.

Source: National Energy Modeling System, runs M2BASE.D060801A, M2RPS20_X.D070601A, and M2RPS20H_X.D070601A.