Delmarva Power (Owned by Pepco Holdings, Inc.) Columbia Gas (Owned by NiSource) MD Maryland Pepco Holdings, Inc. – Potomac Edison (Owned by First Energy) Washington Gas Light Company Maine Natural Gas Corp. (Owned by Iberdrola USA) ME Maine – Central Maine Power Co. (Owned by Iberdrola USA) Indiana Michigan Power Co. (Owned by AEP) MI Michigan Michigan Gas Utilities (Owned by Integrys) – Xcel Energy Centerpoint Energy Plains Natural Gas Co. (Owned by MDU Resources) MN Minnesota Minnesota Energy Resources (Owned by Integrys) – Otter Tail Corp Xcel Energy Ameren (Missouri) Kansas City & Light MO Missouri – Liberty Utilities Laclede Gas Company Atmos Energy Centerpoint Energy MS Mississippi Entergy – Mississippi Power Company (Owned by Southern Company) Willmut Gas (Owned by Sempra Energy) Avista Utilities Black Hills Power (Owned by Black Hills Corp.) MT Montana MDU Resources Group, Inc. – Northwestern Energy Pacific Power (Owned by PacifiCorp) Dominion NC North Carolina Duke Energy – Piedmont Natural Gas MDU Resources Group, Inc. Great Plains Natural Gas Co. (Owned by MDU Resources) ND North Dakota – Otter Tail Corp Xcel Energy
MD – Maryland Delmarva Power (Owned by Pepco Holdings, Inc.) Columbia Gas (Owned by NiSource) Pepco Holdings, Inc. Potomac Edison (Owned by First Energy) Washington Gas Light Company ME – Maine Maine Natural Gas Corp. (Owned by Iberdrola USA) Central Maine Power Co. (Owned by Iberdrola USA) MI – Michigan Indiana Michigan Power Co. (Owned by AEP) Michigan Gas Utilities (Owned by Integrys) Xcel Energy MN – Minnesota Centerpoint Energy Plains Natural Gas Co. (Owned by MDU Resources) Minnesota Energy Resources (Owned by Integrys) Otter Tail Corp Xcel Energy MO – Missouri Ameren (Missouri) Kansas City & Light Liberty Utilities Laclede Gas Company MS – Mississippi Atmos Energy Centerpoint Energy Entergy Mississippi Power Company (Owned by Southern Company) Willmut Gas (Owned by Sempra Energy) MT – Montana Avista Utilities Black Hills Power (Owned by Black Hills Corp.) MDU Resources Group, Inc. Northwestern Energy Pacific Power (Owned by PacifiCorp) NC – North Carolina Dominion Duke Energy Piedmont Natural Gas ND – North Dakota MDU Resources Group, Inc. Great Plains Natural Gas Co. (Owned by MDU Resources) Otter Tail Corp Xcel Energy
Multi-State_Utilities_Table1_revised.docx