World Top 100 Electric Utilities Companies List by Market Cap as of August 2026

Electricity generation company with headquarters in China.

EDISON S.P.A is Electric Utility company with headquarters is in USA.

AES CORPORATION is Electricity Generation and Electricity Distribution company. It is Electric Utility company with headquarters is in USA. As on 2021, AES CORPORATION generating 31,459 Gross MW in operation and 3,497 MW generating capacity under construction.

As on 2022, AES CORPORATION has 9,100 employees.

AES CORPORATION annual revenue generated for period ending Dec-2022 was 12,617 million USD.

INTERCONEXION ELECTRICA S.A. E.S.P.  engages in the electric power, roads, ICT, and telecommunications business unit activities. The company expands, operates, and maintains 47.358 km of high-voltage transmission network and 92.720 MVA of transmission infrastructure in Colombia, Peru, Bolivia, Brazil, and Chile, as well as the international interconnections that operate between Colombia-Ecuador and Ecuador-Peru.

Canada Based Utility Company with approximately 5,200 employees and assets of $21 billion, is an ATCO Company. Generates Electricity, distributes and transmission of natural gas and electricity is core business.

O.P.C. Energy is the first private electricity company in Israel. Headquarters is in Israel.

The Company was incorporated in 2010 and is active in the field of power generation and supply, including development, construction and operation of power plants, as well as power generation and supply to private customers and to Israel Electricity Corporation (IEC). The Company generated about 5% of the electricity consumption in Israel in 2018.

Gas and Electricity Utility company with headquarters is in Oklahoma, USA.

Centrica is international energy services and solutions provider focused on satisfying the changing needs of their customers and enabling the transition to a lower carbon future. They supply energy and services to over 26.2 million customer accounts mainly in the UK, Ireland and North America through strong brands such as British Gas, supported by around 9,000 engineers and technicians. The headquarters is in UK.