Top North American Gas Marketers (Bcf/d)

Company

4Q2007

4Q2006

Change

BP plc

29.90

n/a

n/a

Shell Energy NA

14.70

12.20

20%

ConocoPhillips

13.70

13.40

2%

Constellation

10.98

8.00

37%

Louis Dreyfus

8.30

5.34

55%

Sempra

8.10

9.40

-14%

Chevron

7.62

7.67

-1%

Nexen

6.80

5.50

24%

Tenaska

5.40

5.00

8%

UBS

4.39

4.34

1%

EnCana

3.72

3.41

9%

Lehman Brothers

3.70

n/a

n/a

Oneok

3.32

3.18

4%

Sequent

2.80

2.30

22%

Devon

2.60

2.40

8%

ExxonMobil

2.40

2.40

0%

Chesapeake

2.04

1.39

47%

Merrill Lynch

2.03

1.91

6%

Anadarko

2.01

2.24

-10%

XTO

1.67

1.10

52%

Canadian Natural

1.56

1.59

-2%

CenterPoint Energy

1.51

1.41

7%

Enserco

1.57

1.90

-17%

Apache

1.18

1.10

7%

El Paso

1.04

1.18

-12%

Total*

143.04

n/a

n/a

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 BP, Chevron, ConocoPhillips, Constellation Energy Commodities Group, Lehman Brothers/Eagle Energy, Louis Dreyfus Energy Services, Merrill Lynch Commodities, Sempra Commodities, Shell Energy North America, Tenaska Marketing Ventures and UBS Energy. BP and Lehman Brothers did not participate in the 4Q2006 survey.