Tanzania Electric Supply Company Limited (TANESCO) is a parastatal organization under the Ministry of Energy and Minerals. The Company generates, transmits, distributes and sells electricity to Tanzania Mainland and sells bulk power to the Zanzibar Electricity Corporation (ZECO) which in turn sells it to the public in islands Unguja and Pemba. TANESCO owns most of the electricity Generating, Transmitting and Distributing facilities in Tanzania Mainland. The dataset provides information on existing, under construction and proposed power stations for hydro, thermal and substations, as well as existing and under construction transmission lines. The data is geo-referenced , digitized and extracted from the national grid system map published in 2015 by TANESCO. The following links are datasets related to Tanzania's power systems that are provided by other sources and are available for data comparisons. Tanzania Power Plants (2015) https://energydata.info/dataset/tanzania-power-plants2015- Tanzania Electricity Transmission Network (2014) https://energydata.info/dataset/tanzania-electricity-transmission-networ... Tanzania Transmission Grid Network (2015) https://energydata.info/dataset/transmission-network-tanzania