Power networks/Tanzania

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Country Information
Tanzania (TZ)
Tanzania flag

References
OpenStreetMaprelation 195270
WikidataQ924
WikipédiaTanzania
Energy in Tanzania
Country characteristics
ContinentAfrica
Population61,741,120
Area947,303 km2
GDP75.7 B$
Language(s)English, Swahili
Electrical Network
Generation capacity3,796 MW (OSM)
1,602 MW (Tanesco 2020[1])
Power line length7,562 km (OSM)
5,895 km (Tanesco 2020[1])
Frequency50 Hz
Transmission lines voltages (kV)400 - 330 (proposed) - 220 - 132 - 66 - 33
Data from Wikidata (last update 2025-05-17)
and OpenInfraMap (last update 2025-04-27)

This page has been created through the power networks country page model. See this model page for more information on how to complete it.

High-voltage Electrical Network

State of the map

Network description

Voltages and frequency

Frequency : 50 Hz

Voltage source [2]

Network Voltage Comments Appearance
Transmission 400 kV
Transmission 330 kV (proposed)
Transmission 220 kV
Transmission 132 kV
Transmission 66 kV
Transmission 33 kV

Operator

Operator Network Wikidata Website Wikipedia Operating area Information Label Taginfo
TANESCO Transmission Q4050564
WhatLinksHere
http://www.tanesco.co.tz TANESCO operator=TANESCO
operator:wikidata=Q4050564
operator=TANESCO

Interconnections

Neighbour country Structure name Year of commissioning Technology Voltage Local end Foreign end OSM circuit Notes
Uganda Masaka–Mutukula–Kyaka–Nyakanazi–Mwanza 132 kV way 304840292 Wikipedia
Zambia 66 kV way 449716040
Kenya Isinya–Singida 400 kV way 360708929 way 578140339 relation 17610416 Wikipedia
Kenya 33 kV
Rwanda / Burundi Rusumo - Muyinga 220 kV way 1328420877

Planned project

Data Sources

Source License Date Suitable for OSM Notes
Power System Master Plan 2020 Update 2023, see grid scheme p83-90 ? 2020-09 no -
Africa Grid by EnergyData ? no -
OpenEnergy ? no -
https://trackingsdg7.esmap.org/country/united-republic-tanzania ? no -
https://rise.esmap.org/country/tanzania ? no -
Regional Electricity Interconnection in Africa ? 2023-08-21 no -
Power plants CC0 but contains OSM data 2015 yes -

It is also possible, if some data source have no compatible license, to officially ask the data producer if these data can be used for grid mapping in OpenStreetMap. If you do so, please mention it below to inform other users. Indicate who did the request to who, and when, and what is the answer. Share also a link to the sent mail (for example on github) and the received answer. Mention this request in comment column in the table above.

  • Example : Request by USERNAME to OPERATOR on DATASET_NAME [2025-MM-DD]. Positive/Negative answer received on 2025-MM-DD. See mails : https://xxx.github

Network statistics

Tanzania has 30 power plants totalling 3,796 MW and 7,562 km of power lines mapped on OpenStreetMap (from OpenInfraMap, last update 2025-04-27)

Power line

From TANESCO (December 2019)
Power Lines Voltage Length
66 kV 543 km
132 kV 1,672 km
220 kV 3,010 km
400 kV 670 km
Total 5895 km


Power Lines Voltage Length
From OpenInfraMap, last update 2025-04-27
< 10 kV 2 km
10 kV - 25 kV 11 km
25 kV - 52 kV 74 km
52 kV - 132 kV 273 km
132 kV - 220 kV 1,619 km
220 kV - 330 kV 4,314 km
330 kV - 550 kV 674 km
> 550 kV 0 km
No voltage tagged 592 km
Total 7,562 km

Power line evolution

8365.0 KM
2025-01-25
9277.4 KM
2025-04-25
+ 10.9 %
Growth Rate

Electricity generation

Sources of Electricity in Tanzania
(1) : From OpenInfraMap - 2025-04-04 / (2) from Wikipedia - July 2020
Source Name Source tag Output MW (1) Count (1) Output MW (2) Percentage of Total (2)
Hydroelectricity hydro 2,682 12 573.70 35.8
Natural Gas gas 938 9 892.72 55.7
Diesel diesel 109 4
Heavy fuel oil oil 63 1 88.80 5.5
Solar solar 5.00 4
Biomass biomass 10.50 0.6
All 3,797 MW 30 1,601.84 MW 100.00

Mapping process and community

Mapping Success Stories

Success stories are designed to highlight important contributions. Have you significantly improved the cartography of a country (added a new line, a power station, etc.)? Don't be shy, let us know below.

  • Tobias [2025-02]: Before mapping activity the grid map quality was quite mediocre. Existing larger holes have been fixed. Now the map matches offical TSO maps in the "master plan".

Encountered Problems and Places to Improve

  • The satellite images were not that good for most regions, so there is need to combine different available sources.
  • One line to Zambia could be closed but this line is not connected to the larger national grid.
  • Multiple remote regions could be connected to the grid.
  • Some power plants could be connected.
  • One line in the west could not be finished. From TSO maps this lines is still under construction and has not been closed for the regions were the satellite data was very bad.
  • Some lines splits are not solved.
  • Multiple lines between Dodoma and the coast needs to be double checked if they are in operation. Here also not all towers and lines could be closes with current satellite data.

Use of mapping strategies

Mapping strategies refer to Power networks/Guidelines#Mapping strategies. They are used for a methodically improvement of OSM database. Once you fully applied a strategy on this country, you should add or update your name, date, strategy and comment below. In this way, other users can see if it is worth to engage new investigations.

  • Search for "Unfinished major power lines" - last time applied by Tobias [2025-02]
  • Searching for power plant connection - last time applied by Tobias [2025-02]
  • Searching for parallel lines - last time applied by Tobias [2025-02]
  • Identifying new substations and transmission lines - last time applied by Tobias [2025-02]
  • Use complementary datasets - last time applied by Tobias [2025-02]

Other resources

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