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) Rules, 2012- GN.321/2012;
The Electricity (Generation Services) (Own Use) Rules, 2012- GN.64/2013;
The Electricity (Electrical Installation Services) Rules, GN.404/2015;
The Electricity (Licensing Fees) Rules, 2016-GN.287/2016;
The Electricity (Supply Services) Rules, GN.4/2017; and
The Electricity (Procurement of Power Projects and Approval of Power purchase Agreements) Rules, 2014-GN.245/2017.
Most recently developed rules include:
The Electricity (Grid & Distribution Codes) Rules, GN. 451/2017;
EWURA (Tariff Application and Rate Setting) Rules, GN. 452/2017;
The Electricity (Net-Metering) Rules, GN.76/2018; and
The Electricity (Development of Small Power Projects) Rules, GN.77/2018.
- 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.
- 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.
- 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 which is higher by 25.25 MW as compared to year ended June 2016 which was 1,026.02 MW recorded on 15th March 2016. As of May 2018, the installed capacity in the main grid was 1431 MW and 86 MW in the isolated grid, view details in Table 1
- Generation Mix
In 2016/17, the electricity generation mix consisted of; hydropower 39%, natural gas 44%, liquid fuel (HFO/IDO/GO) 16% and biomass 1%.
- Customer Base
As at 30th June, 2017, the Authority recorded a number of connected customers for TANESCO, Rural Power Development Limited and Andoya Hydro Electric Power Limited distribution systems as: 1,999,890; 2,202; and 230 respectively.
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.