The Electricity Supply Board (ESB) was established in 1927 as a statutory corporation in the Republic of Ireland under the Electricity (Supply) Act 1927. With a holding of 95%, ESB is majority owned by the Irish Government, with the remaining 5% held by the trustees of an Employee Share Ownership Plan.
As a strong, diversified, vertically integrated utility, ESB operates right across the electricity market: from generation, through transmission and distribution to supply. In addition, ESB extracts further value at certain points along this chain: supplying gas, using its networks to carry fibre for telecommunications, developing electric vehicle public charging infrastructure and more.
ESB is a leading Irish utility focused on providing excellent customer service and maintaining its financial strength. It has a regulated asset base of approximately €9 billion with 43% of electricity generation capacity in the all-island market. It currently supplies electricity to approximately 1.4 million customers throughout the island of Ireland. ESB Group employs approximately 7,000 people.