SSE plc engages in the generation, transmission, distribution, and supply of electricity. It generates electricity from water, gas, coal, oil, and multi fuel. The company distributes electricity to approximately 3.9 million homes and businesses across southern central England and the north of Scotland; and operates electricity transmission network in the north of Scotland and other areas. It also operates gas storage and generation facilities. In addition, it engages in the construction of utility projects; and building energy management, energy trading, insurance, stock holding, and property holding businesses, as well as provides utility, corporate, and maintenance services. The company was formerly known as Scottish and Southern Energy plc and changed its name to SSE plc in September 2011. SSE plc was incorporated in 1989 and is based in Perth, the United Kingdom.