This is a list of public utilities.

Natural gas companies

•   Barbados - National Petroleum Corporation, Barbados National Oil Company Ltd.
•   Brazil - Comgás
•   Canada - List of Canadian natural gas companies
•   China - China Natural Gas, Towngas China
  •   Hong Kong - China Resources Gas, The Hong Kong and China Gas Company
•   Egypt - EGAS
•   France - List of French natural gas companies
•   Japan - List of Japan natural gas companies
•   Malaysia - Petronas
•   Pakistan - Sui Northern Gas Pipelines Limited, Sui Southern Gas Company Limited
•   Spain - Endesa, Iberdrola, Naturgy, Repsol, TotalEnergies
•   Taiwan - CPC Corporation
•   Thailand - PTT
•   United Kingdom - List of British natural gas companies
•   United States - List of United States natural gas companies

Electricity companies

•   Australia - Lumo Energy, EnergyAustralia, Origin Energy, TRUenergy, SEC Victoria (fmr.), Powercor, Click Energy, AGL, Alinta, Citipower, ETSA Utilities, Western Power, Country Energy, Energex, Integral Energy, ActewAGL, Ergon Energy, Power and Water
•   Bangladesh - Summit Group, Power Grid Company of Bangladesh Ltd, Electricity Generation Company of Bangladesh Ltd
•   Barbados - Barbados Light and Power Company Ltd.
•   Belgium - Electrabel
•   Botswana - Botswana Power Corporation
•   Brazil - Eletrobrás, AES Eletropaulo, CPFL Energia, Celesc, CEMIG, CESP, Copel, Light S.A., CEEE, Energisa
•   Canada - List of Canadian electric utilities
•   China - State Grid Corporation, China Southern Power Grid
  •   Hong Kong - Hongkong Electric, CLP Power
  •   Macau - Companhia de Electricidade de Macau
•   Cuba - Union Electrica
•   Czech Republic - CEZ Group
•   Egypt - Egyptian Electricity Holding Company
•   Ethiopia - Ethiopian Electric Power Corporation
•   Finland - Fortum
•   France - EDF, Engie, List of French electric utilities
•   Germany - E.ON, RWE, EnBW
•   Greece - PPC (DEI) (Greek Hydro), List of electric power companies in Greece
•   Iceland - Orkuveita Reykjavíkur
•   India - List of Electricity Organizations in India, India: NTPC, Power Grid Corporation of India Ltd.(PGCIL), KPTCL, MSEB, Tata Power, BSES Rajdhani Power Ltd New Delhi, BSES Yamuna Power Ltd New Delhi
•   Indonesia - Perusahaan Listrik Negara
•   Italy - Enel, Edison, A2A, ACEA, Hera, Sorgenia
•   Japan - Kansai Electric Power, Tokyo Electric Power, Chubu Electric Power, Chugoku Electric Power, Hokuriku Electric Power, Hokkaido Electric Power, Kyushu Electric Power, Tohoku Electric Power, Shikoku Electric Power, Okinawa Electric Power, J-POWER
•   Libya - Gecol
•   Malaysia - Tenaga Nasional Berhad
•   New Zealand - Genesis Energy, Mercury Energy, Meridian Energy, Transpower
•   Philippines - Meralco
•   Singapore - Singapore Power
•   South Africa - Eskom
•   South Korea - Korea Electric Power Corporation
•   Spain - Endesa, Iberdrola, Naturgy, Repsol, TotalEnergies
•   Sweden - Vattenfall
•   Taiwan - Taiwan Power Company
•   Thailand - Electricity Generating Authority of Thailand, Provincial Electricity Authority, Metropolitan Electricity Authority
•   United Kingdom - EDF Energy, E.ON UK, National Grid, RWE npower, Scottish Power, Scottish and Southern Energy, Drax Power and Good Energy, Ecotricity, Alkane Energy, Ovo Energy
•   United States - List of United States electric companies

Telephone companies

•   Australia - Telstra, Optus, Vodafone, Hutchison Telecom(3G network), AAPT, Primus Telecom, Nextgen Networks, Agile Communications, TransACT
•   Barbados - Liberty Latin America
•   Botswana - Botswana Telecommunications Corporation
•   Brazil - Brasil Telecom, Oi, Vivo, TIM, Telefónica Brasil
•   Canada - List of Canadian telephone companies
•   China
  •   Hong Kong - PCCW Limited, New World Telephone, Hutchison Telecom
  •   Macau - Companhia de Telecomunicações de Macau
•   Cuba - ETECSA
•   Egypt - telecom egypt, orange egypt, vodafone egypt, etisalat egypt
•   France - List of French telephone companies
•   Germany - Deutsche Telekom, Arcor AG, Freenet AG, T-Mobile, Vodafone Germany, 1&1 Aktiengesellschaft [ de] 1&1 Drillisch
•   Greece - Hellenic Telecommunication Organization
•   India - Airtel, BSNL, MTNL, Vodafone Idea, Jio
•   Indonesia - Telkom
•   Ireland - Eircom, BT Ireland, Smart Telecom, Vodafone Ireland, Hutchison 3G, O2 (Telefónica Europe)
•   Italy - List of Italian telephone companies
•   Japan - NTT, (NTT East, and NTT West)
•   Malaysia - Telekom Malaysia
•   Pakistan - Mobilink, Ufone, Telenor, Zong
•   Philippines - Philippine Long Distance Telephone Company
•   Singapore - SingTel
•   South Africa - Telkom
•   Spain - Telefónica, Orange, Vodafone, Yoigo
•   Taiwan - Chunghwa Telecom, FarEasTone, Taiwan Mobile
•   Thailand - TOT, CAT Telecom, True Corporation, DTAC, AIS, JAS Mobile
•   United States - List of United States telephone companies

Water companies

•   Australia - Unitywater, Queensland Urban Utilities
•   Barbados - Barbados Water Authority
•   Botswana - Water Utilities Corporation
•   Brazil - Sabesp, Sanepar, Copasa, Semasa
•   China
  •   Hong Kong - Water Supplies Department
  •   Macau - Macao Water
•   Egypt - Holding company for water and wastewater, Alexandria Water Company
•   France - SAUR, Suez Environnement, Veolia Environnement
•   Greece - EYDAP
•   Ireland - Irish Water
•   Italy - Hera, Seabo
•   Philippines - Maynilad Water Services, Manila Water Company, Inc., Metropolitan Waterworks and Sewerage System
•   Spain - Canal de Isabel II, Grupo Agbar
•   Taiwan - Taiwan Water Corporation
•   United Kingdom - List of United Kingdom water companies
•   United States - List of United States water companies

Steam companies

Note: some of these companies are still trading, others are listed here for historical interest.

• American District Steam Company
• Boston Heating Company
• Compagnie Parisienne de Chauffage Urbain
• Detroit Thermal
• New York Steam Company, now Con Edison Steam Operations
• Trigen Energy Corporation

Former hydraulic power companies

• Itaipú Binacional *  Brazil
• Liverpool Hydraulic Power Company *  UK
• London Hydraulic Power Company, defunct since 1977 *  UK

See also

• Off-the-grid

This list is incomplete; you can help by adding missing items. (August 2008)