EWURA regulates the Electricity Supply Industry in Tanzania Mainland, which is primarily dominated by Tanzania Electric Supply Company Limited (TANESCO), a vertically integrated utility wholly owned by the Government of the United Republic of Tanzania. TANESCO operates in electricity generation, transmission, distribution, supply, and cross-border electricity trading activities.  Apart from TANESCO, there are 14 other licensees participating in electricity generation activities for sale. Additionally, there are 26 licensed entities generating electricity for their own use.

Furthermore, 8 entities have been registered to generate electricity from hydro for sale in bulk to TANESCO, while six (6) registered entities sell electricity to customers with capacity less than 1MW, generating electricity from solar PV and selling to customers through mini grids developed in off-grid areas, and three (3) registered entities generate electricity for their own use.

Generation Activities

As of June 2025, the installed capacity and cross-border imports were 4,504.54 MW. The power plants within the country contributed 4,437.54 MW, and cross-border imports were 67.00MW. Further, total installed capacity for the entities carrying out electricity generation activities for own use was 362.10MW and for sale was 4,075.44MW, of which 3,997.07MW were from the main grid and 78.37MW from off-grid.

 Transmission Activities

The electricity transmission network comprises 8,303.87km of transmission lines and 72 grid substations, mainly owned and operated by the Tanzania Electric Supply Company Limited (TANESCO). The main transmission lines include 1,524.75km of 400kV; 3,860.95km of 220kV; 2,335.17 km of 132kV, and 583.00km of 66kV.

Distribution Activities

The electricity distribution network for licensed entities comprises 214,343.67km, of which 213,278.32km is owned by TANESCO and 448.50km is for Mwenga Power Services Limited. In addition, the electricity distribution network for the registered entities was 617.00 km.