Regulated

Gas Only

Electric & Gas

California

  • Pacific Gas & Electric (PG&E)
  • San Diego Gas & Electric (SDG&E)
  • Southern California Gas (SoCalGas)

Connecticut

  • Connecticut Natural Gas (CNG)
  • Eversource (Formerly CL&P)
  • Eversource (Formerly Yankee Gas)
  • Southern Connecticut Gas (SCG)
  • United Illuminating (UI)

Delaware

  • Delmarva Power

District of Columbia

  • Potomac Edison Power Company (PEPCO)
  • Washington Gas Light (WGL)

Florida

  • Central Florida Gas (CFG)
  • Florida City Gas (FCG)
  • Florida Public Utilities (FPU)
  • Peoples Gas / TECO Gas

Georgia 

  • Atlanta Gas Light

Illinois

  • Ameren Utilities
  • Commonwealth Edison (ComEd)
  • MidAmerican Energy
  • NICOR
  • North Shore Gas
  • Peoples Gas

Indiana

  • Citizens Gas
  • NIPSCO
  • Vectren Energy Delivery

Maine 

  • Bangor Gas Company
  • Central Maine Power (CMP)
  • Emera Main (Bangor Hydro)
  • Maine Natural Gas
  • Unitil

Maryland 

  • Baltimore Gas & Electric (BG&E)
  • Chesapeak Utilities
  • Columbia Gas of Maryland
  • Delmarva Power
  • Potomac Edison Power Company (PEPCO)
  • Potomac Edison
  • Southern Maryland Electric Co-Op (SMECO)
  • Washington Gas Light (WGL)

Massachusetts

  • Berkshire Gas
  • Columbia Gas of Massachusetts
  • Liberty Utilities (Formerly New England Natural Gas)
  • National Grid Massachusetts
  • Eversource (Formerly NSTAR)
  • Eversource (Formerly WMECO)
  • Unitil (Formerly Fitchburg Gas & Electric)

Michigan 

  • Consumers Energy
  • Mich-Con DTE
  • Michigan Gas Utilities
  • SEMCO Energy

New Hampshire 

  • Eversource (Formerly PSNH)
  • Liberty Utilities (Formerly Granite State)
  • Unitil

New Jersey

  • Atlantic City Electric
  • Elizabethtown Gas
  • Jersey Central Power & Light (JCPL)
  • New Jersey Natural Gas (NJNG)
  • Public Service Gas & Electric (PSE&G)
  • Rockland Electric
  • South Jersey Gas

New York

  • Central Hudson Gas & Electric
  • Consolidated Edison (ConEd)
  • National Fuel Gas
  • National Grid
  • New York State Electric & Gas (NYSEG)
  • Orange & Rockland (O&R)
  • Rochester Gas & Electric (RG&E)

Ohio

  • AEP Ohio
  • Cleveland Electric Illuminating (CEI)
  • Columbia Gas of Ohio
  • Dayton Power & Light (DP&L)
  • Dominion East Ohio
  • Duke Energy Ohio
  • Ohio Edison (OE)
  • Toledo Edison (TE)
  • Vectren Energy Delivery

Pennsylvania

  • Columbia Gas of Pennsylvania
  • Duquesne Power
  • Metropolitan Edison
  • National Fuel Gas
  • Pennsylvania Electric Company (Penelec)
  • Penn Power
  • Peoples Gas
  • Philadelphia Electric Co. (PECO)
  • Philadelphia Gas Works (PGW)
  • PPL Electric (PPL)
  • UGI Central Penn
  • UGI Penn Natural Gas
  • UGI Utilities
  • West Penn Power

Rhode Island

  • National Grid

Texas

  • Atmos Energy
  • AEP Texas Central
  • AEP Texas North
  • Centerpoint Energy
  • Oncor
  • Sharyland
  • Texas-New Mexico Power (TNMP)