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

Power generation, electricity distribution and gas distribution company with headquarters is in Australia. Origin is Australia based Energy Company and it has a rich heritage in energy exploration, production, power generation and retailing. Origin is a leading provider of energy to homes and businesses throughout Australia. Origin has extensive operations across Australia, Papua New Guinea and the South Pacific covering electricity generation, upstream unconventional gas and LNG and LPG.

GAIL (INDIA) is Government owned natural gas processing and distribution company with headquarters is in New Delhi of India.

AltaGas, a Canadian corporation, is a North American energy infrastructure business with a focus on owning and operating assets to provide clean and affordable energy to its customers. They had businesses in midstream and natural gas distribution. Headquarters is in Canada.

Natural gas distribution company with headquarters is in Italy.

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.

APA Group has 15,000 kilometres of natural gas pipelines connect sources of supply and markets across Australia. They operate and maintain networks connecting 1.4 million Australian homes and businesses to provide natural gas. Headquarters is in Sydney, Australia.

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.