Name Abbreviation Region State Government Code ARKLA AR ARKLAAR Southwest Arkansas 5802 Atlanta Gas Light Company AGL Southeast Georgia 13005 Atlanta Gas Light Company - in Therms AGLC Southeast Georgia 13005 Baltimore Gas and Electric Company BGE Mid-Atlantic Maryland 24001 Bay State Gas Company BSGC Northeast Massachusetts 25001 Berkshire Gas Company BEGC Northeast Massachusetts 25002 Brooklyn Union Gas Company BUGC Northeast New York 36002 Cascade Natural Gas Corporation WA CNGCWA Northwest Washington 53807 Central Hudson Gas and Electric Corporation CHGE Northeast New York 36003 Central Illinois Light Company CILCO Mid-West Illinois 17009 Central Illinois Public Service Company CIPSCO Mid-West Illinois 17010 Chesapeake Utilities Corporation of Delaware CUCDE Mid-Atlantic Delaware 10001 Chesapeake Utilities Corporation of Maryland CUCMD Mid-Atlantic Maryland 10001 Cheyenne Light Fuel and Power Company CLFP Northwest Wyoming 47138 Cincinnati Gas and Electric Company CGE East-Central Ohio 39002 Citizens Gas and Coke Utility CGCU East-Central Indiana 18008 City Gas Company of Florida CGF Southeast Florida 12006 City of Palo Alto Utilities CPAU Western California 6005 Colorado Springs Utilities CSU Mid-Continent Colorado 8005 Columbia Gas of Kentucky Inc CGK East-Central Kentucky 21064 Columbia Gas of Maryland CGM Mid-Atlantic Maryland 56572 Columbia Gas of Ohio Inc CGO East-Central Ohio 53002 Columbia Gas of PA CGPA Mid-Atlantic Pennsylvania 56574 Columbia Gas of Virginia Inc CGSI Southeast Virginia 51004 Connecticut Natural Gas Corporation CNGCCT Northeast Connecticut 9003 Consolidated Edison Company of New York Inc CONED Northeast New York 36005 Consumers Energy Company CPC East-Central Michigan 26003 Corning Natural Gas Corporation CORN Northeast New York 36006 Dayton Power and Light Company DPL East-Central Ohio 39006 Delmarva - dba Conectiv Power Delivery DPLC Mid-Atlantic Delaware 10004 East Ohio Gas Company EOGC East-Central Ohio 39008 Elizabethtown Gas Company ETG Mid-Atlantic New Jersey 34001 EnergyNorth Natural Gas Inc ENNGC Northeast New Hampshire 33004 Equitable Gas Company PA EGCPA Mid-Atlantic Pennsylvania 42818 Equitable Gas Company WV EGCWV East-Central West Virginia 42818 Fillmore Gas Company Inc FGC Northeast New York 36077 Florida Public Utilities Company FPUC Southeast Florida 12014 Hope Gas Inc HGI East-Central West Virginia 54871 IES Utilities Inc IES Mid-West Iowa 19108 Illinois Power Company IPC Mid-West Illinois 17032 Indiana Gas Company Inc IGC East-Central Indiana 18018 Intermountain Gas Company IMGC Northwest Idaho 16001 Interstate Power Company of Iowa IPCIWA Mid-West Iowa 19825 Kansas Gas Service WRKS Southwest Kansas 99950 KeySpan Energy Delivery Long Island LILCO Northeast New York 36009 Keyspan/Boston Gas Company BGC Northeast Massachusetts 25005 Keyspan/Colonial Gas Company COGC Northeast Massachusetts 25013 Keyspan/Essex County Gas Company ECGC Northeast Massachusetts 25010 Knoxville Utilities Board KXUB Southeast Tennessee 47041 Laclede Gas Company LGC Mid-West Missouri 29012 Lawrenceburg Gas Company LWGC East-Central Indiana 18048 Long Beach Gas and Electric Department LBGD Western California 6003 Louisiana Gas Service Company LGSC Southwest Louisiana 22063 Louisville Gas and Electric Company LGE East-Central Kentucky 11249 Madison Gas and Electric Company MAD Mid-West Wisconsin 55004 Maine Natural Gas CMPME Northeast Maine 99999 Memphis Light Gas and Water Division MLGW Southeast Tennessee 47057 Michigan Consolidated Gas Company MICHCON East-Central Michigan 26005 MidAmerican Energy Company IA MECIA Mid-West Iowa 19826 Minnegasco Inc MINN Mid-Continent Minnesota 27017 Missouri Gas Energy MGE Mid-West Missouri 47132 Missouri Public Service MPS Mid-West Missouri 47135 Montana - Dakota Utilities Co of Wyoming MDUWY Northwest Wyoming 38835 Montana Power Company MPC Northwest Montana 30009 Montana-Dakota Utilities Co of North Dakota MDUND Mid-Continent North Dakota 38835 Montana-Dakota Utilities Co of South Dakota MDUSD Mid-Continent South Dakota 38835 Mountaineer Gas Company WV MGCWV East-Central West Virginia 54807 Nashville Gas Company NGCT Southeast Tennessee 47060 National Fuel Gas Distribution Corporation NY NFNY Northeast New York 36008 National Fuel Gas Distribution Corporation PA NFGDCPA Mid-Atlantic Pennsylvania 36008 New England Gas Company PGC Northeast Rhode Island 44004 New England Gas Company - Fall River Service Area FRGC Northeast Massachusetts 25008 New Jersey Natural Gas Company NJNG Mid-Atlantic New Jersey 34002 New York State Electric and Gas Corporation NYSG Northeast New York 36010 New York State Electric and Gas Corporation BD NYSEG Northeast New York 36010 New York State Electric and Gas Corporation LD NYSEGL Northeast New York 36010 Niagara Mohawk Power Corporation NIMO Northeast New York 36011 Nicor Gas NIGC Mid-West Illinois 17049 North Shore Gas Company NSGC Mid-West Illinois 47136 Northern Indiana Public Service Company NIPSCO East-Central Indiana 18045 Northern States Power Company of Minnesota NSP Mid-Continent Minnesota 55108 Northern Utilities Inc of Maine NUME Northeast Maine 33005 Northern Utilities Inc of New Hampshire NUNH Northeast New Hampshire 33005 Northwest Natural Gas Company NWNG Northwest Oregon 41003 NSTAR/Commonwealth Gas Company CGC Northeast Massachusetts 25007 NUI Valley Cities Gas NUVC Mid-Atlantic Pennsylvania 14188 Oklahoma Natural Gas Company ONG Southwest Oklahoma 40040 Orange and Rockland Utilities Inc ORU Northeast New York 36841 Pacific Gas and Electric Company PGE Western California 6013 Pacific Gas and Electric Gas Accord PGEA Western California 6013 PECO Energy Company PECO Mid-Atlantic Pennsylvania 11080 Penn Fuel Gas Inc - dba PPL Utilities PFG Mid-Atlantic Pennsylvania 42070 Peoples Gas Light and Coke Company PGLC Mid-West Illinois 17051 Peoples Gas System Inc PGSI Southeast Florida 12035 Peoples Natural Gas Company PNGC Mid-Atlantic Pennsylvania 42062 Peoples Natural Gas Company of Iowa PNGIA Mid-West Iowa 19031 PG Energy - A Division of Southern Union Company PGEI Mid-Atlantic Pennsylvania 42069 Philadelphia Gas Works PGW Mid-Atlantic Pennsylvania 42032 Piedmont Natural Gas Company Inc NC PNGNC Southeast North Carolina 37009 Piedmont Natural Gas Company Inc SC PNGSC Southeast South Carolina 37009 Pike County Light and Power Company PCLP Mid-Atlantic Pennsylvania 42534 PNM Gas Services PNM Southwest New Mexico 35035 Public Service Company of CO PSCO Mid-Continent Colorado 8019 Public Service Company of North Carolina Inc PSCNC Southeast North Carolina 37010 Public Service Electric and Gas Company PSEG Mid-Atlantic New Jersey 34003 Puget Sound Energy PSE Northwest Washington 14608 Questar Gas Company of Utah MFSC Western Utah 49803 Ravencliff Fuel and Supply Company RFS East-Central West Virginia 3349 Richmond Public Utilities RPU Southeast Virginia 51011 Roanoke Gas Company RGC Southeast Virginia 51012 Rochester Gas and Electric Corporation RGE Northeast New York 36023 San Diego Gas and Electric Company SDGE Western California 6009 South Carolina Electric and Gas Company SCEG Southeast South Carolina 45025 South Jersey Gas Company SJGC Mid-Atlantic New Jersey 34004 Southern California Gas Company SOCAL Western California 6010 Southern Connecticut Gas Company TSCGC Northeast Connecticut 9008 Southern Indiana Gas and Electric Company SIGECO East-Central Indiana 18013 Southern Public Service Company SPS East-Central West Virginia 54048 Southern Union Gas Company - Austin Service Area SUGC Southwest Texas 17462 Southwest Gas Corp - Arizona SWGAZ Western Arizona 4015 Southwest Gas Corp - Southern Nevada Division SWGC Western Nevada 4015 St Lawrence Gas Company Inc SLGC Northeast New York 36027 UGI Utilities Inc UGI Mid-Atlantic Pennsylvania 42049 Union Electric Company MO UECMO Mid-West Missouri 17068 Union Light Heat and Power Company ULHP East-Central Kentucky 21803 Union Oil and Gas Inc UOGI East-Central West Virginia 54021 United Cities Gas Company of Georgia UNCGA Southeast Georgia 47131 United Cities Gas Company of Iowa UNCIA Mid-West Iowa 47131 United Cities Gas Company of Missouri UNCMO Mid-West Missouri 4076 United Cities Gas Company of South Carolina UNCSC Southeast South Carolina 47131 United Cities Gas Company of Tennessee UNCTN Southeast Tennessee 47131 United Cities Gas Company of Virginia UNCVA Southeast Virginia 47131 Utilicorp United Inc KS UUIKS Southwest Kansas 29019 Valley Gas Company of Rhode Island VGRI Northeast Rhode Island 44006 Valley Gas Company of West Virginia VALGC East-Central West Virginia 44006 Vermont Gas System Inc VGS Northeast Vermont 50005 Virginia Natural Gas VNG Southeast Virginia 51017 Washington Gas Light Company DC WGLDC Mid-Atlantic District of Columbia 11859 Washington Gas Light Company MD WGLCMD Mid-Atlantic Maryland 11859 Washington Gas Light Company VA WGLCVA Southeast Virginia 11859 West Ohio Gas Company WOGC East-Central Ohio 39030 Western Kentucky Gas Company WKGC East-Central Kentucky 21061 Wisconsin Electric - Gas Operations WEGO Mid-West Wisconsin 55010 Wisconsin Gas Company WGC Mid-West Wisconsin 55011 Wisconsin Power and Light Company WPLC Mid-West Wisconsin 55013 Wisconsin Public Service Corporation WI WPSCWI Mid-West Wisconsin 55014 Yankee Gas Services Company YGSC Northeast Connecticut 9007 Allegheny Power - MD APMD Mid-Atlantic Maryland   Ameren Illinois Company AIC Mid-West Illinois   Arizona Public Service Company APS Western Arizona   Atlantic City Electric Company ACE Mid-Atlantic New Jersey   Baltimore Gas and Electric Company BGE Mid-Atlantic Maryland   Commonwealth Edison Company COMED Mid-West Illinois   Concord Electric Company CEC Northeast New Hampshire   ConEd (Glacial Version) CONEDGSC Northeast New York   Connecticut Light and Power Company CLP Northeast Connecticut   Consolidated Edison Company CONED Northeast New York   Detroit Edison Company DEC East-Central Michigan   Duke Power - North Carolina DNC Southeast North Carolina   Florida Power and Light Company FPL Southeast Florida   Granite State Electric GSE Northeast New Hampshire   Groton Utilities GU Northeast Connecticut   Hawaii Electric Light Company, Inc. HELCO Other Hawaii   Hawaiian Electric Company, Inc. HECO Other Hawaii   Jersey Central Power and Light Company JCPL Mid-Atlantic New Jersey   Kauai Island Utility Cooperative KIUC Other Hawaii   Long Island Power Authority LIPA Northeast New York   Massachusetts Electric Company MEC Northeast Massachusetts   MidAmerican Energy Company MAEC Mid-West Illinois   Middleton Municipal Electric Department MMED Northeast Massachusetts   Midwest Independent System Operator MISO Mid-West Illinois   Mt. Carmel Public Utility Company MCPUC Mid-West Illinois   Narragansett Electric Company NARR Northeast Rhode Island   Niagara Mohawk Power Corporation NIMO Northeast New York   Norwich Public Utilities NPU Northeast Connecticut   NSTAR Electric – Boston Edison Company BECO Northeast Massachusetts   NSTAR Electric – Cambridge Electric Light Company CELC Northeast Massachusetts   NSTAR Electric – Commonwealth Electric Company NSTAR Northeast Massachusetts   Oklahoma Gas and Electric Company OGE Southwest Oklahoma   Pacific Gas and Electric Company PGE Western California   Pacific Power and Light Company – OR PPLOR Northwest Oregon   PECO Energy Company PECO Mid-Atlantic Pennsylvania   Pepco-MD PEPCO Western California   PJM Interconnection PJM Mid-Atlantic Pennsylvania   Portland General Electric Company PGEOR Northwest Oregon   PPL Electric Utilities Corporation PPL Mid-Atlantic Pennsylvania   Public Service Electric and Gas Company of New Jersey PSEG Mid-Atlantic New Jersey   Public Service of New Hampshire PSNH Northeast New Hampshire   Sacramento Municipal Utility District SMUD Western California   San Diego Gas and Electric Company SDGE Western California   Shrewsbury Electric SE Northeast Massachusetts   Southern California Edison SOCAL Western California   SunEdison SUN Western California   SunEdison – PGE SUNPGE Western California   The United Illuminating Company UI Northeast Connecticut   Unitil (Fitchburg Gas and Electric Light Company) UNI Northeast Massachusetts   Western Massachusetts Electric Company WMECO Northeast Massachusetts   Xcel Energy - CO XCEL Mid-Continent Colorado