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