Established in 1951, Chubu Electric Power Co. Inc.(Chubu EPCo.) supplies electricity to the five prefectures of the centrally-located Chubu region of Japan. The supply area covers 39,149 square km (about 10% of Japan as a whole) and 16.6 million people (about 13% of the total population of Japan).

ESB Networks owns and operates Ireland's distribution networks, comprising 110kV, 38kV, 20kV, 10kV and low voltage networks with over 1.8 million customers. They also own the country's transmission networks from 110kV to 400kV, which are operated by an independent transmission system operator. ESB are presently engaged in a very ambitious programme of rebuilding and reinforcement of the networks to ensure that their customers have one of the safest and most modern networks in the world.

Guernsey Electricity Ltd is a limited liability company wholly owned by the States of Guernsey.The company is the sole provider of electrical energy to the island of Guernsey operating under the Electricity (Guernsey) Law 2001.

Independent Power Networks Ltd are a wholly owned subsidiary of Inexus Group Holdings Ltd. The first independent distribution network operator in the UK, bringing competition to electricity connections nationwide.

Established in April 1924, the Jersey Electricity Company, today, is a £60 million turnover business and is the sole distributor of electricity on the Island of Jersey. Their aim is to provide a safe, secure supply of electricity at minimum cost to our customers and the environment.

The Manx Electricity Authority (MEA) is a statutory body charged with providing the people of the Isle of Man with a safe, reliable and economic electricity supply. The Authority has responsibility for the generation, transmission and distribution of electricity and for the billing and collection of revenue from these activities. In addition, these services to the customers are enhanced by the provision of retail service centres where modern electrical appliances and authoritative advice on their use is available, coupled with a comprehensive customer services desk.

Network Rail is an engineering company formed to revitalise Britain's railways. They maintain, improve and upgrade every aspect of the railway infrastructure, including the track, signalling systems, bridges, viaducts, tunnels and level crossings stations. Network Rail do not run the trains but their main customers are the train and freight operating companies who do. They aim to provide Britain with consistently reliable train routes.