power sector in tanzania
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Power Sector in Tanzania. Recent Developments, Current Crisis, Issues, Challenges and Solutions. AGENDA. Recent Developments Current Crisis Issues Challenges Solutions. Recent Developments. Power System Characteristics - PowerPoint PPT PresentationTRANSCRIPT
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Power Sector in Tanzania
Recent Developments, Current Crisis, Issues, Challenges and
Solutions
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AGENDA
• Recent Developments
• Current Crisis
• Issues
• Challenges
• Solutions
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Recent Developments
1) Power System Characteristics• Installed generation capacity of 947 MW (Hydro
562 MW, Diesel 85 MW, IPPs 295 MW, Imports 5 MW), 550,000 consumers
• 4 IPPs – IPTL, Songas, Kiwira Coal Mine, TANWAT selling power to TANESCO
• Electricity imports from Uganda and Zambia, and exports power to Kenya
• EWURA established – not yet fully operational• Several privately owned generation facilities
mostly for standby
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Hydropower Resources
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Mtera Dam Water Levels
686
688
690
692
694
696
698
700
J F M A M J J A S O N D
Month
Lev
el m
.a.s
.l. 2003
2004
2005
2006
MSL
FSL
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Nyumba ya Mungu Dam Levels
678
680
682
684
686
688
690
J F M A M J J A S O N D
Month
Lev
el m
.a.s
.l. 2003
2004
2005
2006
MSL
FSL
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Annual Generation - GWh
0
500
1000
1500
2000
2500
3000
3500
4000
2002 2003 2004 2005 To Ap06
Gen
erat
ion
- G
Wh
IPPs
Thermal
NYM
Pangani
Hale
Mtera
Kihansi
Kidatu
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Current Crisis
• Generation shortage load shedding (power rationing) in February and March, June to October/November
• Severe cash shortage O&M costs financed through overdraft (now TShs 70 billion, expected to increase)
• Under recovering about TSh 8.3 billion per month due to low electricity tariffs
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Issues
• Shortage of generation• High liquid fuel prices form about US$40/barrell
in 2003 to over US$70/barrell now• High technical and commercial losses• Lack of investments since 1997 when
TANESCO was specified• Low tariffs that under recover O&M costs• Poor quality of supply and service• Conflicting uses for the water and poor
catchment management• Load shedding 1994, 1997, 2000, 2006
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Issues
• Delays in commissioning of Ubungo units 5 & 6 in 2005
• Outages of Songas’ generating sets and transformer in 2005 and 2006
• Sub-optimal operation of the hydro/thermal system (overuse of hydro system)
• Unsuccessful procurement of emergency power plant in 2004 (IDA funding),
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Challenges
• Lower than average hydrology (drought)
• High cost of thermal generation
• Financing of future investments
• Overloaded transmission and distribution Unbalanced electricity tariffs – Zanzibar
at TShs 26/kWh (US$0.0211/kWh) much lower than LRMC of US$0.04/kWh
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Challenges
• Costs about US$1.1 per kWh not served
• TANESCO estimate load shedding to year end to be about 199 GWh
• Cost to the economy estimated to be US$219 million
• In addition, the government will loose VAT on electricity consumption amounting to about US$3 million
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Solutions
1) Short Term• Procurement of leased gas based generation• Increase electricity tariffs by 25%• Convert IPTL to natural gas firing• Purchase of the IPTL power plant• Demand side management• Hydro/thermal generation optimization• Negotiate long term gas prices for new plant• Procurement of 100 MW gas based generation
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Solutions
2) Short Term• Enforcement of water rights, catchment's
management and protection, prohibit agro activities close to rivers, proper environmental management of river basins
• Rehabilitation, reinforcement and expansion of the T&D systems, replace billing system and faulty meters
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Actions with High Impact on TANESCO’s Financial PerformanceAction Monthly
Impact TShs billion
Target Date
5% tariff increase
1.2 Done
20% fuel levy 5 July 2006, annually if needed
IPTL conversion
5.3 March – Dec 2007
100 MW leased generation
6 Oct/Nov 2006
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Actions with High Impact on TANESCO’s Financial PerformanceAction Monthly Impact
TShs billionTarget Date
Acquire IPTL 3.2 December 2006
Hydro resource management
2.8 June 2006
Refinance Unit 5&6 debt
0.4 July 2006
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Solutions
3) Short Term – Studies and TA• Long Term Power Master Plan (2007-2032)• Demand Side Management• Capacity building• IPP Strategy and standardized bidding
documents• Hydro/thermal generation optimization• Grid extension to Kigoma, and mines• Preparation of a new Sector Reform Strategy
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Solutions
4) Short to Medium Terms
• Demand side management: Replace incandescent lamps (ILs) with compact fluorescent lamps (CFLs) – less wattage on equivalent light output
• Benefits to both the consumers (reduced energy consumption) and the utility (reduction of demand)
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Comparisons CFLs and ILs on Equivalent Light Output
ILs CFLs Savings
40 W 9W 31 W
60 W 15 W 45 W
100 W 25 W 75 W
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Comparisons CFLs and ILs on Equivalent Light Output
• On equivalent light output, replacement of 23 @ 60 W ILs with 15 W CFLs would reduce the peak demand by about 1 kW
• Consumers would save TShs 23 per day in electricity charges for every 60 W IL replaced (assuming usage of 5 hours/day)
• Replacing just 2 ILs per consumer for the 550,000 consumers, would reduce the peak demand by 50 MW and the energy demand by 90 GWh annually (assuming usage of 5 hours/day)
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Solutions
1) Medium to Long Term• TANESCO;s capital investments needs
2006 to 2010 TShs 1.3 trillion for:a) New generation additions 345 MW b) Transmission and distribution system
rehabilitation and expansionc) Increasing access to electricity in rural
areasd) Interconnections – EAC and SADC
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Comparison of Tanzania’s Electricity Tariffs with selected African and OECD
Countries US$ cents per kWh