This is a list of public utilities.
Natural gas companiesEdit
- Template:Flag - National Petroleum Corporation, Barbados National Oil Company Ltd.
- Template:Flag - Comgás
- Template:Flag - List of Canadian natural gas companies
- Template:Flag - China Natural Gas, Towngas China
- Template:Flag - EGAS
- Template:Flag - List of French natural gas companies
- Template:Flag - List of Japan natural gas companies
- Template:Flag - Petronas
- Template:Flag - Sui Northern Gas Pipelines Limited, Sui Southern Gas Company Limited
- Template:Flag - Endesa, Iberdrola, Naturgy, Repsol, TotalEnergies
- Template:Flag - CPC Corporation
- Template:Flag - PTT
- Template:Flag - List of British natural gas companies
- Template:Flag - List of United States natural gas companies
Electricity companiesEdit
- Template:Flag - 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
- Template:Flag - Summit Group, Power Grid Company of Bangladesh Ltd, Electricity Generation Company of Bangladesh Ltd
- Template:Flag - Barbados Light and Power Company Ltd.
- Template:Flag - Electrabel
- Template:Flag - Botswana Power Corporation
- Template:Flag - Eletrobrás, AES Eletropaulo, CPFL Energia, Celesc, CEMIG, CESP, Copel, Light S.A., CEEE, Energisa
- Template:Flag - List of Canadian electric utilities
- Template:Flag - State Grid Corporation, China Southern Power Grid
- Template:Flag - Union Electrica
- Template:Flag - CEZ Group
- Template:Flag - Egyptian Electricity Holding Company
- Template:Flag - Ethiopian Electric Power Corporation
- Template:Flag - Fortum
- Template:Flag - EDF, Engie, List of French electric utilities
- Template:Flag - E.ON, RWE, EnBW
- Template:Flag - PPC (DEI) (Greek Hydro), List of electric power companies in Greece
- Template:Flag - Orkuveita Reykjavíkur
- Template:Flag - 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
- Template:Flag - Perusahaan Listrik Negara
- Template:Flag - Enel, Edison, A2A, ACEA, Hera, Sorgenia
- Template:Flag - 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
- Template:Flag - Gecol
- Template:Flag - Tenaga Nasional Berhad
- Template:Flag - Genesis Energy, Mercury Energy, Meridian Energy, Transpower
- Norway - Statnett
- Template:Flag - Meralco
- Template:Flag - Singapore Power
- Template:Flag - Eskom
- Template:Flag - Korea Electric Power Corporation
- Template:Flag - Endesa, Iberdrola, Naturgy, Repsol, TotalEnergies
- Template:Flag - Vattenfall
- Template:Flag - Taiwan Power Company
- Template:Flag - Electricity Generating Authority of Thailand, Provincial Electricity Authority, Metropolitan Electricity Authority
- Template:Flag - EDF Energy, E.ON UK, National Grid, RWE npower, ScottishPower, Scottish and Southern Energy, Drax Power and Good Energy, Ecotricity, Alkane Energy, Ovo Energy
- Template:Flag - List of United States electric companies
Telephone companiesEdit
- Template:Flag - Telstra, Optus, Vodafone, Hutchison Telecom(3G network), AAPT, Primus Telecom, Nextgen Networks, Agile Communications, TransACT
- Template:Flag - Liberty Latin America
- Template:Flag - Botswana Telecommunications Corporation
- Template:Flag - Brasil Telecom, Oi, Vivo, TIM, Telefónica Brasil
- Template:Flag - List of Canadian telephone companies
- Template:Flag
- Template:Flag - ETECSA
- Template:Flag - telecom egypt, orange egypt, vodafone egypt, etisalat egypt
- Template:Flag - List of French telephone companies
- Template:Flag - Deutsche Telekom, Arcor AG, Freenet AG, T-Mobile, Vodafone Germany,Template:Ill1&1 Drillisch
- Template:Flag - Hellenic Telecommunication Organization
- Template:Flag - Airtel, BSNL, MTNL, Vodafone Idea, Jio
- Template:Flag - Telkom
- Template:Flag - Eircom, BT Ireland, Smart Telecom, Vodafone Ireland, Hutchison 3G, O2 (Telefónica Europe)
- Template:Flag - List of Italian telephone companies
- Template:Flag - NTT, (NTT East, and NTT West)
- Template:Flag - Telekom Malaysia
- Template:Flag - Mobilink, Ufone, Telenor, Zong
- Template:Flag - Philippine Long Distance Telephone Company
- Template:Flag - SingTel
- Template:Flag - Telkom
- Template:Flag - Telefónica, Orange, Vodafone, Yoigo
- Template:Flag - Chunghwa Telecom, FarEasTone, Taiwan Mobile
- Template:Flag - TOT, CAT Telecom, True Corporation, DTAC, AIS, JAS Mobile
- Template:Flag - List of United States telephone companies
Water companiesEdit
- Template:Flag - Unitywater, Queensland Urban Utilities
- Template:Flag - Barbados Water Authority
- Template:Flag - Water Utilities Corporation
- Template:Flag - Sabesp, Sanepar, Copasa, Semasa
- Template:Flag
- Template:Flag - Holding company for water and wastewater, Alexandria Water Company
- Template:Flag - SAUR, Suez Environnement, Veolia Environnement
- Template:Flag - EYDAP
- Template:Flag - Irish Water
- Template:Flag - Hera, Seabo
- Template:Flag - Maynilad Water Services, Manila Water Company, Inc., Metropolitan Waterworks and Sewerage System
- Template:Flag - Canal de Isabel II, Grupo Agbar
- Template:Flag - Taiwan Water Corporation
- Template:Flag - List of United Kingdom water companies
- Template:Flag - List of United States water companies
Steam companiesEdit
- 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 companiesEdit
- Itaipú Binacional *Template:Flag
- Liverpool Hydraulic Power Company *Template:Flag
- London Hydraulic Power Company, defunct since 1977 *Template:Flag