Centrica operates as an integrated energy company. The Company operates through Energy Supply & Services–UK & Ireland, Energy Supply & Services–North America, Connected Home, Distributed Energy & Power, Energy Marketing & Trading, Exploration & Production, Central Power Generation, and Centrica Storage segments. It supplies gas and electricity to residential, business, and industrial customers, as well as provision of energy-related services; and engages in the power generation activities. The Company also provides installation, repair, and maintenance services for domestic central heating, plumbing and drains, gas appliances, and kitchen appliances; heating, ventilation, and air conditioning equipment; and water heaters and solar power generating equipment, as well as the provision of breakdown services. In addition, it engages 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; and develops new fields to maintain reserves in Europe and North America. Additionally, it generates power from combined cycle gas turbines, wind, and nuclear assets; and is involved in gas storage activities. The Company engages in vehicle leasing; insurance provision; group financing; operation of a franchise network; intermediary services, including claims handling and administration services; sea freight water transport; and social enterprise investment fund activities.