​​​​​Utility Territories Served​​

Serving 26 States and Growing​​​

Toll Free: 800-495-9880
E-mail: CES_Communications@CenterPointEnergy.com​ ​

Arizona: ​

​Unisource Energy Services
Southwest Gas Corporation

Arkansas: ​

​Arkansas Oklahoma Gas 
CenterPoint Energy (Arkla)

California: ​Southwest Gas Corporation
Southern California Gas Company (SoCalgas)
San Diego Gas & Electric
Colorado: Atmos-Colorado
​Xcel Energy (PSCO)
Black Hills Energy
Rocky Mountain Natural Gas LLC
Sourcegas Distribution LLC
Colorado Natural Gas (Summit Utilities, Inc.)
Colorado Springs Utilities

Ameren (CIPS, CILCO, IP)                    
Jo Carroll

North Shore  
Peoples Gas Light & Coke

Rock Energy

Indiana:Citizen's Gas
Fountaintown Gas  
Ohio Valley Gas  
Sycamore Gas Company (Lawrenceburg Gas Company)                      
Vectren North  
Vectren South 
Citizen's Energy Group
Iowa: Alliant  
Black Hills Energy  
MidAmerican Energy
Kansas:Atmos - Kansas  
Kansas Gas Service 
Black Hills
Kentucky: Atmos Kentucky
Columbia Gas of Kentucky  
Louisville Gas & Electric 

CenterPoint Energy (Arkla)
CenterPoint Energy (Entex) 


Consumers Energy  
DTE Energy (MichCon)  
Michigan Gas Utilities
SEMCO Energy Gas Company
Somerset Gas Service

Minnesota: CenterPoint Energy  (MN Gas)
Minnesota Energy Resources  
Xcel Energy
Mississippi: Atmos Energy 
CenterPoint Energy (Entex)
Missouri: ​Liberty Utilities
Atmos Energy 
Ameren UE
Laclede Gas Company
Southern MO Natural Gas
Missouri Gas Energy (Laclede Group)
Nebraska: Black Hills Energy  
Metropolitan Utilities District  
Northwestern Energy  
Sourcegas Distribution LLC
Nevada:CenterPoint Energy  
Oklahoma Natural Gas 
New MexicoCenterPoint Energy  
Oklahoma Natural Gas 
Ohio: ​Vectren Energy
Columbia Gas of Ohio (A NiSource Company)
Duke Energy Ohio
Oklahoma:CenterPoint Energy  (Arkla)
Oklahoma Natural Gas (ONG)
South Dakota: Mid American Energy
Northwestern Energy

CenterPoint Energy (Entex)
Texas Gas Services

Utah:Questar Gas 
West Virginia: Mountaineer Gas 
Wisconsin Alliant (Wisconsin Power & Light)
Antigo City Gas Co.
Madison Gas & Electric 

St. Croix Gas
Superior Water, Light & Power
Wisconsin Public Service 

WE-Energies (WEGO & WGC)
Xcel Energy
Wyoming: ​Questar Gas
Sourcegas ​​​Distribution LLC