LAKE BASIN DEVELOPMENT AUTHORITY PROPOASL FOR IMPLEMENTATION OF TEREMI HYDRO-POWER PROECT MAY 2008 1
PROPOSAL FOR IMPLEMENTATION OF TEREMI HYDRO-POWER PROJECT 1.0 INTRODUCTION The Lake Basin Development Authority was established in 1979 by an Act of Parliament. It undertakes overall planning, coordination and implementation of development projects and programmes in the region. 1.1 Problem Statement The Lake Basin region suffers from inadequate power supply, especially in rural areas, which would otherwise spur industrial development. Electricity demand has been growing at an average rate of 8% per annum with demand sometimes exceeding supply during peak periods. The rural electrification programme is an important element of the regional development policy as it stimulates industrial and agricultural development as well as promotion of general welfare of the people in the rural area. 1.2 Background IMATRAN VOIMA OY-IVO and FINNCOSULT OY Consulting Engineers conducted the feasibility study for Teremi Hydropower project in 1981. The results of the study showed that the project was feasible. The study recommended a concrete overflow weir with a crest elevation of 1947.50m and length of 35m. The headrace canal and penstock would take water to the powerhouse situated at a net head of 200m downstream. The powerhouse would be fitted with 2 units of power generation with a total installed capacity of 1700 kw. The total cost for construction is estimated at Ksh 133,609,300/= (US$ 2,155,000). This does not include improvement and expansion of the water supply system. 2.0 PROJECT AREA 2.1 Location The site is in Western Province, Bungoma District. The main consumption area consists of Kapkateny, Mukuyuni and Chwele. The areas to be electrified will include Chwele, Lukhome, Mukuyuni, Kapsambo, Teremi, Mpakani, Nakoyonjo, Chebukaka, Kibichori and Makhange. 2.2 Topography The project area lies on the southern slopes of Mt. Elgon on an altitude of 1500m-2000m. Teremi Falls in the river Kuywa has a head of 300m per 1 Km due to the steep cliffs abruptly rising. At the edge of the cliffs the attitude is about 1950m while at the junction of river Kuywa and river Nzoia, the altitudes is 1300m. 2
2.3 Land Use In the region, deep wall drained reddish brown friable clays are encountered often with a topsoil darkened by organic matter. Soil erosion is experienced on the mountain slopes and is caused by poor farming methods and overgrazing. Most people are engaged in subsistence farming and diary cattle, goat, sheep and poultry. The pressure on the existing farmland is increasing and people have invaded Mt. Elgon Forest. 2.4 Hydrology Kuywa River originates near the top of Mt. Elgon at elevation 3950m. At the foot of the mountain, the river falls down to the plain through Teremi Falls. Throughout the main part of the area, the mean annual rainfall is 1300-1400mm. Station 1DB1 B in the Kuywa river recorded a mean annual flow of 4.95 m³/s between 1966-1980 Discharges between 1980-2008 should be analyzed to determine the current scenario. 3.0 OBJECTIVES Under the Rural Electrification Programme, the main objectives of the Government is to provide electricity to as many parts of the country as possible and reduce demand on woodfuel and kerosene for lighting. This will achieve the objectives of the Economic Recovery Strategy as well as contribute to the Governments Vision 2030. Specific Objectives are: 1. Increase supply of energy in the region 2. Lessen country s dependency on imported energy 3. Harness energy resources of the region 4. Create employment opportunities 5. Stimulate industrial development in the region 6. Alleviate poverty in the region 4.0 SCOPE OF WORK The Teremi Falls have a potential of generating 2MW and supplying domestic water to the surrounding locality. The scope of work entails validation of the feasibility study report, conducting additional hydrological measurements, detailed designs and optimization of power generation. In addition, an environmental impact assessment will be conducted and an environmental management plan proposed. The consultant shall also prepare tender documents for all the works with final estimates and financing requirements. A proposed implementation programme of 48 months is shown in annex 1. 3
5.0 ESTIMATED INVESTMENT COSTS Kshs. 5.1 Preliminary and General Establishment on site 2,500,000.00 Compensation and resettlement costs 1,000,000.00 Sub-Total 3,500,000.00 5.2 Civil Works Access road 4,500,000.00 Diversion works 4,000,000.00 Dam and Intake Excavation 100,000.00 Concrete Weir 2,625,000.00 Concrete Walls 1,800,000.00 Concrete Intakes 525,000.00 Trash racks 25,000.00 Earth fill dam 1,155,000.00 Power Conduct Headrace canal 6,660,000.00 Fore bay 325,000.00 Power House and Tailrace Canal Excavation 315,000.00 Power House 960,000.00 Sub-Total 22,990,000.00 5.3 Mechanical and Hydraulic Equipment Turbine (2 No.) 36,000,000.00 Penstock 9,720,000.00 Outlet valves 350,000.00 Sub-total 46,070,000.00 5.4 Electrical Equipment Generator (2No.) 9,840,000.00 Transformer (2 No.) 6,192,000.00 Other equipment 23,328,000.00 Sub-Total 33,060,000.00 5.5 Transmissions and Distribution 11 kv line 7,980,000.00 400 V line 20,676,000.00 200 kva transformer (3 No.) 3,042,000.00 315 kva transformer (1 No.) 1,362,000.00 Sub-Total 33,060,000.00 5.6 Engineering and Supervision 15% x (1+2+3+4+5) 15,843,000.00 5.7 Contingencies 10% x (1+2+3+4+5+6) 12,146,300.00 GRAND TOTAL 133,609,300.00 4
Annex 1 IMPLEMENTATION PROGRAMME FOR TEREMI FALLS HYDROPOWER PROJECT 1 Activities 1 st Year 2 nd Year 3 rd Year 4 th Year Site Investigations 2 Detailed Design 3 Contract Documents 4 Tendering 5 Construction 6. Trial Run 7 Follow-up 5