About ESB
Our history, our people and our principles
ESB Customer Supply
We manage your electricity supply account, promoting energy efficiency and helping you save money.
ESB Networks Ltd.
We maintain Ireland's electricity network, manage its network infrastructure and operate ESB's electricity meters.
ESB International
We are an international energy company investing in energy and engineering across the globe.
ESB Independent Energy
We deliver individually tailored energy solutions and services to commercial, industrial & business energy users in Ireland.
ESB Telecoms
We built and own Ireland's national fibre optic network, and over 300 telecoms sites across Ireland.
ESBI Computing
We provide best-of-breed IT solutions to international industry and government.
ESB limited companies
Our registered office and the list of registered numbers for all ESB companies.