Seminole Energy Services, L.L.C.
Seminole Retail Energy Services, L.L.C.
Seminole Gas Company, L.L.C.
1323 E. 71^st Street, Suite 300
Tulsa, OK  74136
(918) 492-2840

Seminole Retail Energy Services, L.L.C. - High Plains
303 E. 17^thAvenue, Suite 850
Denver, CO 80203
(303) 457-4194

Seminole Retail Energy Services, L.L.C. - Sierra Southwest 
5210 E. Williams Circle, Ste 600
Tucson, AZ 85711
(877) 224-6735

Seminole Retail Energy Services, L.L.C. - Mid Atlantic
301 E. Main Street, Suite 750
Lexington, KY 40507
(859) 229-1100

Seminole Retail Energy Services, L.L.C. - Texas
3825 Gilbert Drive, Suite 134
Shreveport, LA 71104
(318)-861-5916 

Unimark LLC
1900 E. 15^th Street, Suite 800b
Edmond, OK  73013
(405) 844-6240

Lakeshore Energy Services
44444 Hayes Road
Clinton Township, MI  48038
(888) 200-3788

Vanguard Energy Services, L.L.C.
850 E. Diehl Road, Suite 142
Naperville, IL  60563
(630) 955-1500