Eng. Lewanga Tesha

Senior Manager – Hydro Generation

TANESCO,TANZANIA

Worldwide Electrification

Overview� Growth in Power demand is 10%-15% per annum � 14% of Population has access to electricity� Electricity accounts 9% of total Energy

Consumption� Total grid installation capacity is 1051MW� Hydro contributes 561 MW(53%).� IPP’s (Songas na IPTL) contributes 289 MW

(28%)� TANESCO’s gas power plant contributes 147 MW

(14%)� TANESCO’s diesel generation sets contributes

5%.� Peak power demand 800MW � No spinning reserve in power generation.

Energy Resources � Hydro power potential estimated at 4.7 GW� Coal reserves are estimated at about 1,200

million tonnes, of which 304 million tonnes are proven.

� Natural gas is estimated at 45 billion cubic metres of proven reserves.

� Average solar installation is about 215W/m2.� Studies on geothermal, uranium, wind, bio fuels,

and ocean based energy are going on.

Energy Consumption Pattern � Biomass-based fuels account for more than 90%

� Imported petroleum and electricity, account for about 8% and 1.2%, respectively

� Coal, solar and wind account for less than 1% of energy used

2000-2009 Annual Averages Year ACCE

SS RATE (%)

Losses (Trans) GWh

Collections (mil TShs)

Power Generation (GWh)

MW Installed

MW Available

Demand (MD) MW

2000 7.5 159.1 130,752.0 2,412.2 682.3 425.7

2001 9.2 182.9 134,601.0 2,692.9 912.3 464.8

2002 9.2 191.8 150,015.0 2,812.8 912.3 673.7 474.9

2003 10.2 174.4 165,059.6 3,092.9 872.3 656.2 506.3

2004 10.3 153.3 188,475.2 3,270.1 916.4 747.6 508.7

2005 11.0 196.2 221,658.0 3,530.1 956.4 831.2 552.4

2006 11.5 168.0 236,983.0 3,437.8 998.4 876.8 603.4

2007 12.7 217.9 292,006.0 4,073.3 1,058.4 935.5 653.3

2008 13.8 221.0 371,257.0 4,301.8 1,189.6 972.6 693.8

2009 15.2 252.2 422,665.7 3,440.6 1,200.2 949.1 755.4

Service Connection 2004-09

Years 2004 2005 2006 2007 2008 2009

New customer Connected

34,139 27,685 31,492 30,004 56,589 59,705

Total Customers

550,863 585,773 635,310 693,496 741,051 803,028

Generation to National Grid Status by 2010

S/No. STATIONACTUAL

GENERATION (MW)

TYPE OF TECHNOLOGY

OWNER

INSTALLED

CAPACITY (MW)

LOAD FACTOR (%)

1 KIDATU 124 HYDRO TANESCO 204 61.312 MTERA 39 HYDRO TANESCO 80 50.883 KIHANSI 112 HYDRO TANESCO 180 62.24 NEW 15 HYDRO TANESCO 68 23.345 HALE 5 HYDRO TANESCO 21 9.82

6 NYUMBA YA MUNGU 3.5 HYDRO TANESCO 8 38.66

7 UWEMBA 0.6 HYDRO TANESCO 0.84 34.9

8 IPTL 16 DIESEL ENGINES

IPTL103

9 SONGAS 160GAS

TURBINESSONGAS

189.5

10 UBUNGO 80.0 GAS ENGINES TANESCO 104.76 84.32

11 TEGETA 29.0 GAS ENGINES TANESCO 45 80.16

12DODOMA

5.30 DIESEL ENGINES TANESCO 7.444 0.00

Generations Sources &Transmission lines

Transmission Assets Base-Lines�66kV Transmission line: 546 km

�132kV Transmission line: 1531.5 km

�220kV Transmission line: 2732.26 km

Renewable Energy � Hydro electricity contributes about 50% of

generation.

� Wind Energy: Mapping in Progress, Makambakoand Singida have attractive potential.

� Biomass fired plant exist at TPC-Moshi(17MW),TANWATT-Iringa(2MW), SAO HILL-Iringa(1MW).

� Planning in progress for 30-35MW and 15MW biomass power plants at Southern paper Mill and SAO HILL respectively.

Private Sector Participation� To date it constitute 27% of installed power

capacity.

� In 2007 and 2008 private sector contribution of 44% and 41% respectively. It was the aftermath of 2006 draught that led to entrance of leased power plants to curb power deficit.

Short to Long Term Generation Expansion Plan Project Capacity

(MW) Estimated cost ( $

Million) Envisaged

Commercial OperationalDate (COD)

Resource

Short term Ubungo EPP 100 100 2011 GasMwanza MS

Diesel 60 80 2011 Diesel

Wind 50 50 2012 WindKiwira I 200 274 2013 Coal

Kinyerezi 240 216 2013 Gas

Rusumo falls 21 86 2015 Hydro

Interconnector I 200 760 2015Medium term

Ruhudji 358 495 2016 HydroMnazi Bay 300 660 2017 Gas

Mtwara Artumas 12 2017 GasRumakali 222 456 2018 Hydro

Stiegler’s Gorge I 300 873 2020 HydroInterconnector II 200 2021

Long term Stiegler’s Gorge II 600 311 2023 Hydro

Ngaka 400 840 2024 CoalMchuchuma I+II 400 840 2025 CoalStiegler’s Gorge

III300 255 2026 Hydro

Nyasa Coal 200 600 2027 CoalKakono 53 90 2027 HydroMpanga 144 249 2028 HydroMasigira 118 209 2028 Hydro

Ikondo -Mnyera 340 641 2029 HydroTaveta -Mnyera 145 380 2030 Hydro

Short to Long Term Transmission Plan

S/N Project Name

1. Expansion of the Iringa-Dodoma-Singida-Shinyanga transmission line to 400kV-COD 2013

2. Expansion of the Singida-Arusha-Nairobi 400kV transmission line – COD 2014

3. Construction of 400kV Morogoro-Tanga-Moshi-Arusha transmission line.

4. Extension of the Makambako-Songea 132kV transmission line – COD 2013

5. Extension of the North – West Grid to cover isolated Regions of Kagera, Kigoma, and Rukwa

6. Zambia – Tanzania – Kenya Interconnector – COD 2015

COD=Commercial Operation Date

Achievements in the Power Sector� Electrification over 90% of district headquarters.

� Commissioning of 45MW gas power plant in December, 2009.

� Commissioning of 102MW gas power plant in November, 2008.

� Three percentage levy from power sales contributed to Rural Energy Fund.

� Finalization of the Power System Master Plan (PSMP) in October,2008.

Challenges

� No generation spinning reserve. Demand and supply is almost equal

� High technical losses in the transmission and distribution networks.

� Tariff which is not cost reflective.

� Prolonged under investment in the power infrastructure.

� Insufficient maintenance of power infrastructure

� High Non technical Loses in distribution

Measures in progress

� 100,000 customers connection per year programme(incease of customer base)

� Increase fund allocation to Repair and Maintenance of power infrastructure.

� Actively Promotion of Power Projects as per PSMP both to Private sector and Development partners