Large volume natural gas supplier list

Note: Peoples Gas does not endorse any particular plan or provider. This list is made available to you for informational purposes only. We encourage you to carefully review your options and use the resources on this site and others to help you make an informed choice if you are considering a new supplier.

These natural gas suppliers have agreed to the procedural requirements of our program, including a code of conduct for marketing and billing practices. Please call 800-264-8026 for updates.

Supplier name Telephone Website/email address
BP Canada Energy Marketing Corp 312-594-2063
Conoco 281-293-1000
Constellation New Energy - Gas Division 844-200-3427
Direct Energy 800-968-3239
EDF Energy 219-757-1752
IGS Energy 877-923-4447 ext 2603
MidAmerican Energy Services, LLC 800-432-8574
Modern Energy 800-418-5273
Natural Gas Company 630-530-0365
Nicor Enerchange 630-245-7831
Nordic Energy Services, LLC 877-808-1022
Pro Energy Solutions 732-569-2197
Proliance Energy, LLC 630-544-3058  
Realgy Energy Services 860-233-2270 ext 10
Santanna Energy Services 800-827-0067
Symmetry Energy Solutions, LLC 630-241-1010
Tiger Natural Gas 888-875-6122
Twin Eagle Resource Management 920-831-2524
Vanguard Energy Services, LLC 630-955-1500
Windy City Energy 877-287-7261