The Regional Rusumo Hydroelectric Project will generate approximately 80MWs to be shared equally between Rwanda, Burundi and Tanzania. It will include the following:
• A concrete gated combined dam/spillway with a 2-lane road on top, with a dam height of 12.0m; the spillway structure houses three (or four) radial gates, each approximately 9m in width and 9.5m high;
• A diversion canal 17m wide, 260m long;
• A water intake and a headrace tunnel, 11m wide by 14m high, 460m long with shot Crete and rock bolts support system;
• A concrete-lined vertical surge shaft, 8.0m diameter with a 41m diameter surge chamber;
• A power house with 3 vertical axis Kaplan turbines, 77.5m3/s discharge and 3x30MW (approx.) generators, 12kV output voltage;
• A tailrace canal 250m long and 40m wide; and
• A 220 kV substation switchyard.
The Project is estimated to cost (in 2013 USDs) approximately USD 340 Million. This is considered sufficient for the power plant facility. <media 147>The funds have been approved</media> by the World Bank on 6th August, 2013 in Washington.
The funds for the power plant facility will be broken down as follows:
Component A1: Civil Works (US$155.0 million). This component comprises all excavation/earth works, tunnelling and concrete for the power plant complex structures, including a barrage and gated spillway, intake works and diversion/power canal, surface powerhouse, access roads and construction site facilities such as offices and housing.
Component A2: Mechanical and Electrical Works (US$ 126.0 million). This component will include supply, installation, testing and commissioning of: (i) hydro-mechanical equipment; (ii) turbine-generator sets and auxiliaries; (iii) generation substation; and (iv) power complex control and communications equipment.
Component A3: Social and Environmental Impacts mitigation (US$ 22.0 million). This component will finance Environmental and Social Management Plan (ESMP) and the Resettlement Action Plan (RAP) including management and supervision of the implementation.
Component A4: Owner’s Engineer and Project supervision (US$37.0 million). This component will finance an Owner’s Engineer to assist the Project entity with: (i) overall project management and supervision of the procurement, design, construction, interface management and preparation for operation and maintenance of the power plant complex; and (ii) coordination of the implementation of the ESMP and RAP. This component will also finance staff costs to support the NELSAP Rusumo Project Implementation Unit (RPIU) including a project manager, senior engineers (civil, electrical and mechanical), a quantity surveyor, a safeguards team, a procurement specialist, a financial management specialist, accounts and logistics assistant, a communications specialist and other technical staff. In addition, this component will finance equipment, capacity-building and monitoring/evaluation activities of the project.
Component B: Transmission Lines (U$$90.0 million) it is noted that the Transmission Lines will be funded with parallel financing from AFDB and other financiers. This component will consist of the three transmission lines from Rusumo to (i) Gitega, Burundi (161 km); (ii) Kigali, Rwanda (119 km); and (iii) Nyakanazi, Tanzania (98 km). They will connect the power station at Rusumo to the national grids of Burundi, Rwanda and Tanzania. The transmission lines are expected to play a role in the creation of a regional grid “backbone” for expanded future power trade within the region.
The Funding of the power plant has been entirely sourced from International Development Association (IDA) and shall be availed to the Governments both as grants and credits in accordance with the IDA borrowing terms of each of the Shareholder countries. These funds shall be specifically remitted by the three Governments to the RPCL in the form of on lent funds and in proportionally equal sums on the same terms and conditions. Repayments of the subsidiary loans shall be from the sale of power from the Hydropower Plant by RPCL to the utilities of the three countries. It is anticipated that each utility shall take a third of the power generated from the power plant.
The Construction works will involve the following:
d) The Owner’s Engineer (OE): This will be an international firm of Engineering Consultants that will be responsible for the design, preparation of construction drawings and construction supervision of the civil engineering works;
e) A Civil Engineering Contractor (CEC): This will be a civil works contractor of international repute that will be responsible for the civil works (including the construction of the dam, waterways, power station and all the other associated civil engineering works); and
f) An Engineer-Procure-Construct (EPC) Contractor: This will be a company with international repute in the provision of electro-mechanical packages to hydro power projects of at least the size of the Project and shall be responsible for the design, manufacture, installation, quality control, commissioning and timely delivery of the electro-mechanical works for the power plant (including the Rusumo Falls substation).