​​​​​Utility Territories Served​​

Serving 32 States and Growing​​​

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

​​
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)
Town of Walnut

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