A public utility company is an organization that maintains the infrastructure for a public service. Public utilities are subject to forms of public control and regulation ranging from local community-based groups to statewide government monopolies.
Southern Company is an American gas and electric utility holding company based in the Southern United States. It is headquartered in Atlanta, Georgia, with executive offices also located in Birmingham, Alabama. The company is the second largest utility company in the U.S. in terms of customer base, as of 2021. Through its subsidiaries it serves 9 million gas and electric utility customers in 6 states. Southern Company's regulated regional electric utilities serve a 120,000-square-mile (310,000 km2) territory with 27,000 miles (43,000 km) of distribution lines.
CLP Group and its holding company, CLP Holdings Ltd, also known as China Light and Power Company, Limited, is an electricity company in Hong Kong. Incorporated in 1901 as China Light & Power Company Syndicate, its core business remains the generation, transmission, and retailing of electricity. It also has businesses in a number of Asian markets as well as EnergyAustralia in Australia. It is one of the two main electricity power generation companies in Hong Kong, the other being Hongkong Electric Company.
Scottish Power Limited, trading as ScottishPower, is a vertically integrated energy company based in Glasgow, Scotland. It is a subsidiary of Spanish utility firm Iberdrola.
National Grid plc is a British multinational electricity and gas utility company headquartered in London, England. Its principal activities are in the United Kingdom, where it owns and operates electricity and natural gas transmission networks, and in the Northeastern United States, where as well as operating transmission networks, the company produces and supplies electricity and gas, providing both to customers in New York and Massachusetts.
ActewAGL is an Australian multi-utility joint venture company provides utility services in the Australian Capital Territory (ACT) and south-east New South Wales. The company was formed in October 2000 between the Australian Gas Light Company and ACTEW Corporation.
Sempra is a North American public utility holding company based in San Diego, California. The company is one of the largest utility holding companies in the United States with nearly 40 million consumers. Sempra's focus is on electric and natural gas infrastructure and its operating companies include: Southern California Gas Company (SoCalGas) and San Diego Gas & Electric (SDG&E) in Southern California; Oncor Electric Delivery Company in Texas; and Sempra Infrastructure, with offices in California and Texas.
The Tanzania Electric Supply Company Limited (TANESCO) is a Tanzanian parastatal organisation established in 1964. It is wholly owned by the government of Tanzania. The Ministry of Energy and Minerals regulates the operations of TANESCO.
The Taiwan Power Company, also known by the short name Taipower, is a state-owned electric power industry providing electricity to Taiwan and its off-shore islands.
An independent power producer (IPP) or non-utility generator (NUG) is an entity that is not a public utility but owns facilities to generate electric power for sale to utilities and end users. NUGs may be privately held facilities, corporations, cooperatives such as rural solar or wind energy producers, and non-energy industrial concerns capable of feeding excess energy into the system.
SGSP (Australia) Assets Pty Ltd (SGSPAA), trading as Jemena, is an Australian company that owns, manages or operates energy infrastructure assets in the eastern states of Australia including Queensland and New South Wales, and gas pipelines and gas and electricity distribution networks in Victoria and the Northern Territory. It is 60% owned by State Grid Corporation of China and 40% by Singapore Power.
China is the world's largest electricity producer, having overtaken the United States in 2011 after rapid growth since the early 1990s. In 2021, China produced 8.5 petawatt-hour (PWh) of electricity, approximately 30% of the world's electricity production.
This is a list of Electricity distribution companies by country.
Algonquin Power & Utilities Corp. is a Canadian renewable energy and regulated utility conglomerate with assets across North America. Algonquin actively invests in hydroelectric, wind and solar power facilities, and utility businesses, through its three operating subsidiaries: Bermuda Electric Light Company, Liberty Power and Liberty Utilities.
Companhia de Electricidade de Macau – CEM, S.A. known simply as CEM or Chinese: 澳電 is a private public utility company with a sole concession to transmit, distribute, sell high, medium and low voltage of electricity in Macau. Besides, CEM owns an installed generation capacity of 408 MW.
Energy in Sudan describes energy and electricity production, consumption and imports in Sudan. The chief sources of energy in 2010 were wood and charcoal, hydroelectric power, and oil. Sudan is a net energy exporter. Primary energy use in Sudan was 179 TWh and 4 TWh per million persons in 2008.
The electricity sector in Macau ranges from generation, transmission, distribution and sales of electricity in Macau, China.
CK Hutchison Holdings Limited is a Hong Kong, China-based and Cayman Islands-registered multinational conglomerate corporation. The company was formed in March 2015 through the merger of Cheung Kong Holdings and its main associate company Hutchison Whampoa. It has four core businesses – ports and related services, retail, infrastructure and telecommunications – which operate in over 50 countries, as well as several other investments around the world.
Barbados - National Petroleum Corporation, Barbados National Oil Company Ltd. 
Brazil - Comgás 
Canada - List of Canadian natural gas companies 
China - China Natural Gas, Towngas China 
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 
