Dar es Salaam. There is growing frustration among electricity consumers as most parts of the country went without power supply for the better part of the last few days even as Tanzania Electric Supply Company (Tanesco) struggled to stabilise the situation. The disruptions have affected most businesses in cities and towns that are connected to the national grid. Regions affected include Dar es Salaam, Dodoma, Morogoro, Tanga, Iringa, Mbeya, Arusha, Mwanza and Kilimanjaro.