Top North American Gas Marketers (Bcf/d)

Company

2Q2008

2Q2007

Change

BP plc

30.30

n/a

n/a

ConocoPhillips

14.20

13.50

5%

Constellation

14.20

8.20

73%

Shell Energy NA

13.70

12.60

9%

RBS Sempra

8.90

7.70

16%

Chevron

8.32

8.76

-5%

Louis Dreyfus

7.95

5.18

53%

Nexen

7.30

4.90

49%

Lehman Brothers

5.83

n/a

n/a

Tenaska

5.10

4.50

13%

EnCana

3.84

3.51

9%

UBS

3.00

5.10

-41%

ONEOK

2.91

2.83

3%

Devon

2.53

2.33

9%

Merrill Lynch

2.43

2.19

11%

Sequent

2.40

2.00

20%

Chesapeake

2.14

1.72

24%

ExxonMobil

1.93

2.30

-16%

Anadarko

1.87

1.80

4%

XTO

1.80

1.33

35%

Hess

1.70

1.60

6%

Enserco

1.60

1.58

1%

Canadian Natural

1.53

1.72

-11%

CenterPoint

1.41

1.32

7%

Apache

1.12

1.19

-6%

El Paso

1.05

1.18

-11%

Total*

149.06

99.04

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 plc, Chevron Corp., ConocoPhillips, Constellation Energy Commodities Group, Lehman Brothers, Louis Dreyfus Energy Services, Merrill Lynch Commodities, Shell Energy North America, Tenaska Marketing Ventures and UBS Energy. BP and Lehman did not participate in the 2Q2007 survey.