Centrica plc operates as an integrated energy company in the United Kingdom, the Republic of Ireland, Germany, Norway, rest of Europe, the United States, Canada, and internationally. The company operates through Centrica Consumer, Centrica Business, Exploration & Production, and Centrica Storage segments. It supplies gas and electricity to residential customers, as well as offers energy-related services; and generates power from combined cycle gas turbines and nuclear assets. The company also provides installation, repair, and maintenance services for domestic central heating, plumbing and drains, and gas and kitchen appliances; heating, ventilation, and air conditioning equipment; and water heaters, as well as offers breakdown services. In addition, it is involved in the procurement, trading, and optimization of energy; and supplies energy efficiency solutions and technologies to residential customers. Further, the company produces and processes gas and oil; develops new fields to maintain reserves; constructs, owns, and exploits infrastructure; and engages in the social enterprise investment fund activities. Additionally, it is involved in the trade and optimization of energy activities; provision of vehicle leasing, commercial, and insurance services, as well as energy management products and services; and operates a gas storage, and franchise network. The company also provides intermediary services, including claims handling and administration, as well as business, finance, and data management services; and offers sea freight water transport services. It primarily supplies energy and services to approximately 25 million customers under the British Gas, Direct Energy, and Bord Gáis Energy brands. The company was formerly known as Yieldtop plc and changed its name to Centrica plc in December 1996. Centrica plc was incorporated in 1995 and is headquartered in Windsor, the United Kingdom.