Technical Regulation

Electricity Technical Regulation

Regulation of electricity sub-sector is guided by National Energy Policy, 2015; EWURA Act, Cap. 414; Electricity Act, Cap. 131; Electricity (General) Regulations GN 63; and The Electricity (Market Re- Organization and Promotion of Competition) Regulations, 2016- GN.292/2016.

. To facilitate implementation of this legislation, EWURA Act (S. 40) gives EWURA powers to make rules with respect to regulated services and supply.

Since its establishment, EWURA has developed and put into operation various rules related to regulation of electricity sector in mainland Tanzania. The rules currently in force include:

The Electricity (Transmission Services) Rules, 2012- GN.320/2012;

The Electricity (Distribution Services) Rules, 2012- GN.322/2012;

The Electricity (Generation Services) (Own Use) Rules, 2012- GN.64/2013;

The Electricity (Generation Services) Rules, 2012- GN.321/2012;

The Electricity (Initiation of Procurement of Power Projects) Rules, 2014-GN.110/2014;

The Electricity (Supply Operations) Rules, 2015- GN.321/2015;

The Electricity (Electrical Installation Services) Rules, 2015;

Most recently developed rules include:

The Electricity (Development of Small Power Projects) Rules, GN.217/2016;

The Electricity (Supply Services) Rules, GN.175/2016;

The Electricity (Licensing Fees) Rules, 2016-GN.287/2016; and

Furthermore, the Authority has developed Grid Code and is in process to finalize Distribution Code.


  1. Electricity Technical Regulation

With respect to technical regulation, EWURA issue licenses and monitor performance of service providers in electricity sector focusing on quality of service, quality of supplies, compliance to environmental and safety requirements. Performance monitoring is done through review of reports from service providers and through regular or specific inspections in existing service provider’s infrastructure or proposed sites.

  1. Monitoring and Inspection

The Authority conducts routine inspections on Low Voltage (LV) and Medium Voltage (MV) distribution networks. EWURA shared field inspection reports with the inspected licencees  and require them to take immediate corrective action for  improvements and compliance. In an effort to ensure that the inspections are carried out thoroughly and consistently, EWURA developed Electricity Technical Audit Manual to be used as a guideline and provide check lists during inspection. The Manual is useful for the Authority’s Inspectors as well as the Licensees. Please download the Manual for more details.

  1. Quality and Standard of Services

The Authority monitors quality of service through the set standards with a focus on system disturbances such as low frequency, high frequency, low voltage, power outages and load shedding. Further, the Authority monitors compliance of key performance indicators as stipulated in the licencee’s Customer Service Charters.

Generation and Distribution Capacity

For the year 2016/17, a total of 6,732.07 GWh were dispatched from TANESCO owned plants, independent power producers, small power producers and imports from neighbouring countries. About 6,732.07 GWh were supplied to customers through distribution lines. The Maximum Demand attained was 1051.27 MW, recorded on 14th February 2017. The installed capacity in the main grid is 1366 MW and 79 MW in the isolated grid , view details.

  1. Generation Mix

In 2016/17, the electricity generation mix consisted of; hydropower 40%, natural gas 44% and other fossil fuel 16% In comparison to the previous years there is a decline of hydropower contribution in the generation mix. This decline was mainly caused by shortage of rainfall in the catchment areas. In 2016 thermal power plants including the emergency ones had to be dispatched more to bridge the generation gap.

  1. Customer Base

As at 31st December, 2016, the Authority recorded a number of connected customers for TANESCO, Rural Power Development Limited and Andoya Hydro Electric Power Limited distribution systems as 1,745,160, 1,987 and 200 respectively.

  1. Standards

All electrical works and goods installed or operated in Tanzania are required to comply with certain acceptable standards that EWURA has a responsibility to monitor. A catalogue of standards issued by TBS on electrical works is available. Electrical energy, like any other products should satisfy proper quality requirements. For the electrical equipment to operate properly and for the customer to get the right quality of energy, the supply voltage should be within specified range of the rated value. TBS in collaboration with EWURA, TANESCO, University of Dar es Salaam and other stakeholders has established the Tanzania Standards on Power Quality of Supply and Services. The standards were launched in January, 2011. TANESCO prepared their own technical and operating guidelines known as the Engineering Instructions to facilitate standard construction and operation within the power system networks. These instructions are reviewed and approved by EWURA before coming into effect. The Engineering Instructions can be used by other entities dealing with distribution and supply activities.