​​​​​Utility Territories Served​​

Serving 32 States and Growing​​​

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

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​​
​Alabama:

​Huntsville Utilities
Mobile Gas Service
North Alabama Gas District
Wheeler Basin

​Arizona: ​​Southwest Gas Corporation
Unisource Energy Services
​Arkansas: ​

​Arkansas Oklahoma Gas 
​​Black Hills Energy
CenterPoint Energy (Arkla)

​California: 

​California Gas Transmission Co
Pacific Gas & Electric (PG&E)
San Diego Gas & Electric
South California Gas Company

​Colorado: Atmos Energy
Black Hills Energy
Colorado Natural Gas
Colorado Springs Utilities
​Xcel Energy (PSCO)
​Georgia:​Liberty Utilities
​Illinois: 

​Ameren (CIPS, CILCO, IP)                  
Jo Carroll Energy
MidAmerican Energy
Nicor  
North Shore  
Peoples Gas
Rock Energy Cooperative

​Indiana:​Citizen's Gas
NIPSCO  
Ohio Valley Gas  
Sycamore Gas Company
Vectren
​Iowa: ​Alliant  
Black Hills Energy  
MidAmerican Energy
Liberty Utilities
​Kansas:​Atmos Energy
Kansas Gas Service 
Black Hills Energy
Midwest Energy
​Kentucky: ​Atmos Energy
Columbia Gas  
Delta Natural Gas Company
Duke Energy
Louisville Gas & Electric 
​Louisiana: 

​CenterPoint Energy (Arkla)
CenterPoint Energy (Entex) 

​Michigan: 

​Consumers Energy  
DTE Energy (MichCon)  
Michigan Gas Utilities
SEMCO Energy Gas Company
Citizen's Gas Fuel Company

​Minnesota: ​CenterPoint Energy  (MN Gas)
Minnesota Energy Resources  
Xcel Energy
​Mississippi: 

​Atmos Energy 
CenterPoint Energy (Entex)

​Missouri: 

Ameren
Atmos Energy 
Empire
Laclede Gas Company
​Liberty Utilities
Missouri Gas Energy
Southern Missouri Gas
Summit Natural Gas

​Montana:​Northwestern Energy
​Nebraska: ​Black Hills Energy  
MidAmerican Energy
Northwestern Energy  
Nevada:Southwest Gas
​New Mexico:​New Mexico Gas Company 
​North Carolina:​Piedmont Natural Gas Company
PSNC
Ohio: 

Columbia Gas
Dominion East Ohio
Dominion West Ohio
Duke Energy
Vectren Energy

​Oklahoma:​Arkansas Oklahoma Gas
CenterPoint Energy  (Arkla)
Oklahoma Natural Gas
​​South Carolina:​Piedmont Natural Gas Company
​South Dakota: ​MidAmerican Energy
Northwestern Energy
​Tennessee:​Atmos Mid-State
Chattanooga Gas Company
Memphis, Light, Gas & Water
Piedmont Natural Gas Company
​Texas: 

Atmos Energy
Atmos West Texas
​CenterPoint Energy (Entex)
Texas Gas Services
WesTex Energy LLC

​Utah:​Questar Gas Company
Virginia:   ​Roanoke Gas Company
​Wisconsin ​Alliant
Antigo City Gas
Madison Gas & Electric 
Midwest Natural Gas
St. Croix Gas
Superior Water, Light & Power
WE-Energies
Wisconsin Public Service 
Xcel Energy
​Wyoming: ​Black Hills Energy