Top North American Gas Marketers (Bcf/d)

Company

3Q2007

3Q2006

Change

Sempra

14.20

11.80

20%

ConocoPhillips

14.00

13.57

3%

Shell Energy NA

13.10

11.70

12%

Constellation

9.94

8.15

22%

Chevron

7.94

7.85

1%

Louis Dreyfus

6.91

5.49

26%

Nexen

6.10

5.30

15%

Tenaska

5.00

4.30

16%

UBS

4.89

4.93

-1%

EnCana

3.63

3.36

8%

Oneok

3.16

3.02

5%

Eagle Energy/Lehman

2.50

1.70

47%

Devon

2.41

2.29

5%

Sequent

2.30

2.30

0%

ExxonMobil

2.17

2.43

-11%

Merrill Lynch

2.08

2.10

-1%

Enserco

1.96

1.81

8%

Chesapeake

1.85

1.46

27%

Anadarko

1.66

1.69

-2%

Canadian Natural

1.62

1.42

14%

XTO

1.56

1.21

29%

CenterPoint Energy

1.29

1.50

-14%

El Paso

1.17

1.18

-1%

Apache

1.15

1.14

1%

Total

112.59

101.70

11%

Source: Quarterly financial reports with the Securities and Exchange Commission, or if necessary, statements signed by company officials and provided to NGI.

Companies providing data directly to NGI include Chevron, ConocoPhillips, Constellation Energy Commodities Group, Eagle Energy Partners I LP/Lehman Brothers Commodities Services, Louis Dreyfus Energy Services, Merrill Lynch Commodities, Shell Energy North America, Tenaska Marketing Ventures and UBS Energy. BP plc, which resumed reporting to this survey for 4Q2007, is believed to be the largest North American Gas Marketer by a wide margin.