Centrica Plc engages in the provision of energy supply and services. It operates through the following segments: British Gas Services and Solutions, British Gas Energy, Bord Gáis Energy, Centrica Business Solutions, Energy Marketing and Trading, and Upstream. The British Gas Services and Solutions segment is involved in the installation, repair, and maintenance of domestic central heating and related appliances, and the provision of fixed-fee maintenance/breakdown service and insurance contracts in the UK. The British Gas Energy segment refers to the supply of gas and electricity to residential and small business customers in the UK. The Bord Gáis Energy segment supplies gas and electricity to residential, commercial, and industrial customers in the Republic of Ireland. The Centrica Business Solutions segment offers energy services and solutions to large organizations in all geographies in which the group operates, and the development and operation of large-scale power assets in the UK. The Energy Marketing and Trading segment includes procurement, trading, and optimization of energy in the UK and Europe. The Upstream segment produces and processes oil and gas principally within Spirit Energy and the sale of power generated from nuclear assets in the UK. The company was founded on March 16, 1995 and is headquartered in Windsor, the United Kingdom.