Naomba niurudishe huu mjadala tena kwa kuipima Tanesco na kinachoendelea kuhusiana na nishati ya umeme.
Mama unazungumzia Stieglers Gorge ambayo iko kwenye bonde a mto rufiji. Bwawa la umeme likijingwa hapa, litakuwa na uwezo mkubwa wa kuitosheleza Tanzania marudufu, takriman MegaWati 2100.
Kwa mujibu wa Tanesco, uwezo wa mabwawa tuliyonayo na mitambo mingine tunayoitumia ya gesi na diseli, ni Megawati 939.
INSTALLED GRID GENERATION CAPACITY (AS AT 31.12.2006)
PLANT
HYDRO, DIESEL OR GAS
INSTALLED CAPACITY
OWNERSHIP
Kidatu
Kihansi
Mtera
New Pangani Falls
Hale
Nyumba ya Mungu
SONGAS
IPTL
Aggreko
Dowans Holdings
(Ex- Richmond Development Corporation)
Grid Connected Diesel P/Stations
Hydro Power Plant
Hydro Power Plant
Hydro Power Plant
Hydro Power Plant
Hydro Power Plant
Hydro Power Plant
Gas Turbines
Diesel run plant
Gas Turbines
Gas Turbines
Diesel run plants
204 MW
180 MW
80 MW
68 MW
21 MW
8 MW
182 MW
100 MW
40 MW
22 MW
34 MW
TANESCO
TANESCO
TANESCO
TANESCO
TANESCO
TANESCO
PRIVATE
PRIVATE
PRIVATE
(Leased for 2 years)
PRIVATE (Leased for 2 years)
TANESCO
TOTAL
939 MW
Lakini bado Tanesco na wizara ya Nishati haijaweza kutoa Tathmini nzuri kutuambia kuwa Tanzania tunahitaji umeme wa kiasi gani kwa mwaka.
Kuna mipango kibao ya kujenga na kuzalisha umeme iwe ni mabwawa au makaa ya mawe, ukipiga mahesabu ya haraka, utakuwa kuwa gharama za mipango hii mipya ni sawa na gharama za kuijenga Stieglers ambayo ni dola Billioni 2.
MASTER PLAN
The first power system master plan was drawn up in 1980 followed by another one in 1985 and the latest one in 1999, which is updated annually. Some of the projects recommended in the PSMP include:
Project Year Cost USDM
Installation of (40 MW) gas turbine 2005 ......34.50
Conversion of IPTL diesel units to gas 2006 .....12.30
Zambia Tanzania (200 MW) interconnector 2010 ...168.10
Ruhudji hydropower (35.8 MW) 2012 ..400.63
Mchuchuma Coal fired plant (200 MW) 2018 ...201.72
Mchuchuma Coal fired plant (200 MW) 2023 ...176.50
Rumakali hydropower (222 MW) 2024 ..338.16
Jumla ya hii miradi hapo juu in Us $1.3 billion, sasa ukiongezea pesa tulizopoteza kwa kuwalipa IPTL, Richmond an Dowans, unakuta kuwa tuna pesa nyingi za kuweza kuwa na mradi kabambe wa kuzalisha umeme wa kututosha bila kutoka jasho.
Hata kama tukiacha tumia hizi pesa za miradi hii hapo juu, angalia pesa tulizofuja BOT, Ndege, Rada na Kiwira, jumla si chini ya US $ 1 billion!
Swali linakuja, je tuna dhamira ya kweli kupata ufumbuzi wa kudumu au tunaendelea kuziba viraka na kujihujumu kwa kutumia miradi midogo midogo isiyo ya maana.
ukiendelea kusoma mipango ya Tanesco, kuna jambo ambalo linajifunua wazi na sina uhakika kama hili limepandwa kwa makusudi au ni ukweli.
Kwa mujibu wa Tanesco kama jedwali la kwanza hapo juu linavyoonyesha, Dowans ndio walikuwa wazalishaji wa umeme wa mitambo iliyoletwa na Richmond. Na hii ni tangu Disemba ya 2006! Lakini ni Rais Kikwete akihojiwa na waandishi wa Nipashe January ya 2007 aliyesema Msabaha angejinyonga kwa kuingia mkataba na Richmond.
ni vipi basi kama nukuu inavyoonyesha hapa chini kuwa Tanesco ilishajua kuwa Richmond imeiuzia Dowans mitambo?
STATUS OF EMERGENCY POWER SUPPLY PROJECTS
Background Due to poor hydrology conditions, Tanzania experienced throughout the years 2003 up to 2006, significant drop of water inflows to hydropower dams, which resulted into significant reduction of hydro electricity generation. This phenomenon was notable in the Great Ruaha and Pangani river systems. Hydropower which was up to year 2001 contributing about 97.5% of the energy needs in the national grid system, by year 2005, the contribution of hydropower had dropped to about 50% and by mid year 2006 to 30 percent of the national grid energy needs. To subsidise this deficit, TANESCO resorted to importing more thermal energy from IPTL and SONGAS. The cost of this imported thermal energy is so high that the Government has had to give substantial amount of subsidies to TANESCO. However, as the hydrology situation worsened in 2006, TANESCO has had no option but to institute load shedding in order to stretch the little available water in the hydropower dams for a longer period. On the other hand, the Government approved TANESCOs plans to implement short term generation projects to avoid severe energy shortages which had serious negative consequences in the national economy.
1. RENTAL GAS BASED 40 MW AGGREKO PLANT
Purpose: To install a rental (leased) 40 MW gas based power generating plant at Ubungo, near the fuel tanks.
Financier: The Government of Tanzania.
Project Cost: Us dollars 61.0 million (T.Shs. 70.7bn/-)
Contractor: M/S Aggreko of United Arab Emirates. The contract was signed on 26th July 2006,the rental contract is for two years.
Status: The first phase of 20 MW plant was commissioned in October, 2006 and the second phase of 20 MW in November, 2006. There are no reported problems with the gas supply.
2. RENTAL GAS BASED 100 MW DOWANS HOLDINGS PLANT
Purpose: To install a rental (leased) plant at Ubungo where at site B (near the SONGAS plant) units of 22 MW are installed and at site A (behind TANESCO Head Office Ubungo building) units of 80 MW are to be installed this year.
Financier: The Government of Tanzania .
Project Costs: T.Shs. 172.5 billion/=
Contractor: Initially the contractor was M/S Richmond Development Corporation (RDC) of United States of America. The contract was signed on 23rd June 2006 and the works were supposed to have been completed in 150 days, and the rental contract is for two years. M/S RDC however on 23rd December 2006 assigned his rights and obligations acceptable within the contract, to M/S Dowans Holdings Ltd. of United Arab Emirates.
Status: Delivery of the first 20MWplant was done and by the end of the year the plant was still undergoing test runs. The contractor managed to connect to the grid on several occasions but the plant has not stabilized due to technical problems. The balance of the plant i.e. 80 MW was sea frighted and equipment was received in Dar es Salaam on 27th December, 2006. Installation is expected to start when site leveling and compaction works are completed.
3. RENTAL DIESEL ENGINES 40 MW ALSTOM PLANT FOR MWANZA
Purpose: Construction of a rental 40 MW diesel/gas based power plant in Mwanza to alleviate the power shortages in the grid and to stabilize the grid, especially in the North West portion.
Project financier: The Government of Tanzania .
Project Cost: US dollar 150 million
Contractor: M/S Alstom Power Rentals LLP of Houston, United States of America.
Status: Logistical arrangements for project roll out are still going on. Compaction works and concrete casting of slippers are going on at site (total 200 pieces of slippers are required). Supplier of fuel already appointed by TANESCO Tender Board.
4. 100 MW PERMANENT GAS BASED TANESCO PLANT
Purpose: Construction of a 100 MW gas based power generating plant at Ubungo, behind TANESCO Head Office.
Financier: The Government of Tanzania.
Project Cost: Euro 57,550,000.00 (T.Shs. 102.237 billion/-).
Contractor: M/S Wartsila of Finland. The contract was signed on 20th June 2006. The plant is scheduled to be completed within eleven months. The consultant is M/S Lahmeyer Internationed of Germany.
Status: Civil works for foundations are on going which includes excavation for foundations and site leveling. Preparation of the Operations and Maintenance (O & M) Contact is in progress.
5. TEGETA 45 MW PERMENENT PLANT BY WARSILA
Purpose: To generate power using natural gas to meet the growing power demands in Tanzania.
Financier: The Government of the Kingdom of the Netherlands under ORET/MILIEV program.
Project Cost: Euro 31 million (T.Shs. 45 billion).
Status The Oret Grant has been approved. The plant is also scheduled to be completed within eleven months. It will be built near the IPTL power plant at Tegeta, and it will have new gas engines, using gas from Songo Songo Island. Preparation for transporting the engines from Wartsila, Finland were going on.
6. 200MW COAL FIRED KIWIRA POWER PLANT
It is also expected before the end of year 2007, the Kiwira Coal & Power Limited of Mbeya would increase its production of coal to- electricity generation from 6 MW to 50 MW, during the first phase.
Summary
When all these rental and permanent upcoming generation projects become fully generational before the end of year 2007, they will add up a total of 375 MW into the national grid. This is apart from 282 MW from IPTL and SONGAS, and 561 MW from the hydro power plants. The highest demand (maximum consumer demand) recorded by TANESCO around Christmas time last year in the national grid network was 603 MW. The TANESCO power system will therefore be able to meet the consumer demand during the year because the dams have sufficient water levels and the reserve thermal capacity is large enough to meet the consumer demand.
Si dhumuni langu kuendelea na mdahalo kuhusiana na Dowans, lakini ni kujiuliza ni vipi Tanzania na Tanesco zinashindwa kuwa na mipango imara ya kuzalisha umeme kwa kisingizio kuwa hatuna pesa, huku tunazo nyingi na tunazimumunya kwa ujinga?