TANESCO is a parastatal organisation created in 1964 and is under the Ministry of Energy and Minerals. The company’s core business is to generate, transmit, distribute and sell electricity to customers in Tanzania mainland and bulk supply to the island of Zanzibar. The company’s total installed capacity is 793MW of which 561MW is hydropower and the rest 232MW is thermal. About 96% of the installed capacity is located in the interconnected grid. The rest are isolated diesel power stations. The existing interconnected grid network consists of 2,781km of 220kV, 1,403km of 132kV, and 459km of 66kV. Distribution network consists of 8,325km of 33kV, 3,732km of 11kV and 12,992km of lower voltages. In 2002, there were about 473,546 domestic, light commercial and light industrial customers and 1,335 large industrial and commercial customers lined by these distribution lines.
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