IN ZAMBIA CLINT KOMBE & ARNOLD SINYINZA. 10 th November Programme

Transcription

1 GEOTHERMAL EXPLORATIONS IN ZAMBIA PRESENTED BY PROJECT ENGINEERS CLINT KOMBE & ARNOLD SINYINZA ZESCO LIMITED 10 th November 2008 Organised by: UNU/KENGEN Geothermal Training Programme Naivasha, Kenya

2 PRESENTATION LAYOUT BACKGROUND OVERVIEW OF THE KAPISYA POWER PLANT CURRENT STATUS RESUSCITATION NEEDS EXPLORATION WORKS UNDERTAKEN EXPECTED BENEFITS CHALLENGES FACED CONCLUSION 2

3 BACKGROUND ABOUT 99 % OF POWER IN ZAMBIA IS HYDRO GENERATED TOTAL INSTALLED CAPACITY IS 1640 MW HYDRO MW THERMAL - 8 MW GEOTHERMAL 0 MW 3

4 BACKGROUND PRESENT SYSTEM IN ZAMBIA- GENERATION MAJOR HYDRO STATIONS KAFUE GORGE 900MW (990MW) KARIBA NORTH 600MW (720MW) VICTORIA FALLS 108MW SMALL/MINIHYDRO STATIONS LUSIWASI 12MW MULUNGUSHI 20MW LUNSEMFWA 18MW CHISHIMBA FALLS 6MW MUSONDA FALLS 5MW LUNZUA 0.75 MW 4

5 To Sumbuwanga ZAMBIAN POWER SYSTEM KAPUTA MPULUNGU 8 o LUNZUA MBALA DRC KASHIKISHI KALUNGWISHI MPOROKOSO KALUNGWISHI RIVER CHISHIMBA FALLS NAKONDE MAMBILIMA KASAMA MUSONDA FALLS LUWINGU ISOKA 22 o East West Lunga River at Mwinilunga (1.2MW) LUMWANA ANGOLA SOLWEZI LUANO KALABO Chavuma Falls (1.2MW) ZAMBEZI LUKULU MONGU NAMIBIA Kabompo River at ChakataFalls (1.2MW) SENANGA SESHEKE KATIMA MULILO KAOMA KabompoRiver at Kabompo-Manyinga Bridge (0.10MW) ITEZHI - TEZHI (120MW) VICTORIA FALLS Lufubu River at Kasempa Bridge (0.23MW) MUMBWA KAFUE WEST MAZABUKA MUZUMA BOTSWANA MICHELO KITWE MAPOSA MPONGWE LUSAKA WEST 18 o KAPIRI KAFUE TOWN KAFUE GORGE MANSA KANSUSWA KABWE KARIBA NORTH LAKE KARIBA SAMFYA MOMBUTUTA MKUSHI MULUNGUSHI LEOPARDS HILL KAFUE LOWER SERENJE LUNSEMFWA CHIRUNDU KARIBA SOUTH ZIMBABWE PENSULO PETAUKE LUANGWA LUSIWASI KEY MPIKA MFUE MSORO AZELE CHINSALI LUNDAZI km CHIPATA 33.5 o East PROPOSED LINES 330 kv kv 220 kv kv 132 kv kv 88 kv kv 66 kv kv POWER STATIONS PROPOSED POWER STATIONS SUBSTATIONS PROPOSED SUBSTATIONS DIESEL STATIONS 5

6 BACKGROUND ZAMBIA HAS POTENTIAL FOR GEOTHERMAL RESOURCES AS EVIDENCED BY SURFACE MANIFESTATIONS: THERE ARE A NUMBER OF HOT SPRINGS SPREAD OUT IN DIFFERENT PARTS OF THE COUNTRY POTENTIAL OF MOST OF PROSPECTS HAS NOT YET BEEN EXAMINED CONCLUSIVELY ONLY TWO MANIFESTATION AREAS HAVE BEEN INVESTIGATED THE GEOSCIENTIFIC INVESTIGATION REPORT FOR CHINYUNYU AND KAPISYA SITES IS AVAILABLE 6

7 BACKGROUND AVAILABLE DATA POINTS TO GOOD PROSPECTS FOR EXPLOINTING GEOTHERMAL RESERVES POTENTIAL PRESENTLY THERE IS NO GEOTHERMAL POWER GENERATION OR DIRECT-USE APPLICATIONS IN THE COUNTRY

8 OVERVIEW OFKAPISYA PROJECT STUDIES UNDERTAKEN INCLUDE: PREVIOUS STUDIES: THIEME & JOHNSON (1981) FURTHER STUDIES FEASIBILITY STUDIES THROUGH ITALIAN GRANT TO 1987 BY DAL IN.TE.SA. SPA AN. AFTER STUDIES THIRTEEN EXPLORATION/PRODUCTION WELLS WERE DRILLED AND A BINARY POWER PLANT WAS CONSTRUCTED IN 1987.

9 KAPISYA POWER PLANT Kapisya Prospect Lake Tanganyika " Lake Mweru! Mpulungu Sumbu National Park!! Kasama! Isoka D. R. CONGO TANZANIA ANGOLA! Solwezi Mansa! Bangweulu Floodplains MALAWI North Luangwa National Park! Mpika Luambe National Park Kitwe!! Ndola Kasanka National Park South Luangwa National park Chipata!! Mkushi! Kapiri Mposhi Z A M B I A Liuwa Plains National Park Kafue National Park MOZAMBIQUE Mongu! Lusaka! Lower Zambezi National Park Lochinvar National Park! Chirundu Siavonga! Sioma Ngwezi National Park! Livingstone Victoria Falls NAMIBIA BOTSWANA Lake Kariba ZIMBABWE

10 KAPISYA POWER STATION & BOREFIELD

11 KAPISYA GEOTHERAMAL PLANT RESUSCITATION PROJECT 11

12 OVERVIEW KAPISYA POWER PLANT TWO TURBO GENERATORS EACH RATED AT 100 KVA WERE INSTALLED TO OPERATE AT OPTIMUM TEMP OF 95 DEGREES CELCIUS MOST WELLS DISCHARGE HOT WATER AT MAX TEMP OF 88 DEGREES CELCIUS THE PLANT WAS NOT FULLY COMMISSIONED O DUE TO LACK OF POWER TRANSMISSION LINES TO LOAD CENTRES

13 OVERVIEW KAPISYA POWER PLANT THE BINARY PLANT OPERATES ON THE PRINCIPLE OF ORGANIC RANKIN CYCLE (ORC) IN WHICH THE HOT WATER PUMPED FROM THE PRODUCTION WELLS HEATS AN ORGANIC FLUID TO PRODUCE STEAM EXPANDING STEAM PRODUCED THEN POWERS THE TURBINE/GENERATOR UNITS FOR ELECTRICITY PRODUCTION LOW TEMP RESOURCE WITH ESTIMATED RESERVIOR TEMPS OF ABOUT 124 DEGREES CELCIUS

14 OVERVIEW KAPISYA POWER PLANT THE PROJECT WAS INITIATED BY THE GOVERNMENT OF ZAMBIA UNDER THE MINISTRY OF MINES THE PROJECT WAS LATER HANDED OVER TO ZESCO (POWER UTILITY) IN 2001 BY MINISTRY OF MINES. PLANT HANDED OVER WITHOUT SYSTEM DRAWINGS AND OTHER KEY DATA ONLY REPORTS ON THE PROJECT: FEB 1986, JUNE 1987 & SEPT 1987 PROGRESS REPORTS SCANTY EQUIPMENT DATA (NAME PLATE DETAILS ) 14

15 KAPISYA GEOTHERMAL PLANT ZAMBIA

16 CURRENT STATUS THE PLANT HAS REMAINED DORMANT FROM TIME OF PARTIAL COMMISSIONING IN 1988 TO DATE. THE PLANT HAS REMAINED IN RELATIVELY GOOD CONDITION THOUGH A FEW ITEMS REQUIRE REPLACEMENT. COMBINED ZESCO/KENGEN/UNZA TEAM VISITED SITE ON 2ND FEBRUARY 2005 TO CARRY OUT PRELIMINARY ASSESSMENT WORKS JUNE 2006 PLANT CONDITION ASSESSMENT VISIT BY ZESCO/KENGEN NOVEMBER 2006 GEOSCIENTIFIC INVESTIGATIONS CARRIED OUT BY KENGEN LOAD AND POWER TRANSMISSION SURVEY HAS BEEN CARRIED OUT BY ZESCO IN THE VICINITY OF THE GEOTHERMAL POWER PLANT

17 CURRENT STATUS THE LOAD ALONG LAKESHORE IN THE VICINITY OF THE PLANT HAS INCREASED SO MUCH THAT THE INSTALLED CAPACITY OF THE GEOTHERMAL PLANT CURRENTLY IN PLACE IS INSUFFICIENT THE POTENTIAL LOAD IS APPROXIMATELY SIX (6) THE POTENTIAL LOAD IS APPROXIMATELY SIX (6) TIMES THE SIZE OF THE PLANT.

18 RESUSTATION NEEDS ZESCO AND KENGEN TO RESUSTATE AND RE- COMMISSION THE PLANT IN PARALLEL STUDY THE POSSIBILITY OF INCREASING THE INSTALLED GENERATING CAPACITY. ZESCO HAS ALSO INVOLVED LOCAL CONSULTANTS FROM THE UNIVERSITY OF ZAMBIA TO OFFER TECHNICAL SUPPORT.

19 EXPLORATION WORKS UNDERTAKEN SURFACE EXPLORATION: GEOLOGICAL MAPPING GEOCHEMISTRY (Soil gas survey, hot spring sampling & analysis) GEOPHYSICS (MT & TEM) FINDINGS: The resource is low temperature of about 124 degrees C Reservoir is fault controlled to be tapped by sinking wells up to 500m deep Reservoir area is about 0.5 to 1km sq capable of generating more than 2MWe. To confirm resource deep exploration wells need to be drilled d

20 EXPECTED BENEFITS IMPROVED QUALITY OF LIFE OF THE COMMUNITIES IN THE AREA BY PROVIDING CLEAN SOURCE OF ENERGY. IMPROVED ECONOMIC STATUS OF THE COMMUNITIES THROUGH NEW INVESTMENTS AND CREATION OF JOBS REDUCED DEFORESTATION (ENVIRONMENT GAIN) INCREASED INVESTMENT IN TRADING, TOURISM, AGRICULTURE AND OTHER SECTORS. PROVISION OF SOCIAL AMENITIES.

21 CHALLENGES LACK OF EXPERIENCE IN EXPLORATION, INSTALLATION, COMMISSIONING, OPERATION AND OVERALL MANAGEMENT OF GEOTHERMAL POWER PLANTS LITTLE SUPPORT FROM STAKE HOLDERS DUE TO LACK OF INFORMATION ABOUT GEOTHERMAL ENERGY RESOURCES REGULATIONS AND STANDARDS FRAME WORK NEED TO BE IN PLACE TO GOVERN GEOTHERMAL RESOURCES DEVELOPMENT.

22 CONCLUSION WE STRONLY URGE THIS HOUSE TO HELP OUR POWER UTILITY SOURCE FOR THE PONTENTIAL GEOTHERMAL PROJECT FINANCE TO COMPLETE THE STUDIES AND RESUSCITATE/UPRATE THE KAPISYA PLANT. THROUGH GOVERNMENT LEADRERSHIP, ZESCO LIMITED, PARTERNERSHIPS AND TRAINING SUCH AS THIS ONE, WE HOPE TO ENSURE THAT GEOTHERMAL ENERGY IS ESTABLISHED AS A MAJOR ECONOMICALLY COMPETITIVE GENERATION COMPONENT IN ZAMBIAN ENERGY SUPPLY.

23 THANK YOU THANK YOU