Expression of Interest for Deployment of Solar Photovoltaic Plant at #Gaingu to Power the Namwaters Coastal Desalination Plant and Pump Stations. DESCRIPTION OF THE NAMWATER COASTAL DESALINATION PLANT: ELECTRICITY REQUIREMENTS The proposed SS1 Coastal Desalination plant and solar photovoltaic plant site are to be constructed in the Erongo Region. This implies that the projects are being executed under the jurisdiction of Erongo RED for the solar plant and NamPower for the desalination plant. Therefore, different sets of Namibian policies, rules, and frameworks determine what is permissible to support NamWaters generation and trading of renewable energy. The energy demand for the desalination plant is estimated to be 18 MWh. Coastal Desalination Three water supply scenarios were considered as part of the feasibility study for the proposed Desalination Plant and Water Carriage System, as indicated below: Supply Scenario 1 (SS1): Supply additional potable water for the CCA only; Supply Scenario 2 (SS2): Supply additional potable water for the CCA, the area around Windhoek (Central Areas Network (CAN)) and for en-route Users along the transmission pipeline; Supply Scenario 3 (SS3): Supply additional potable water for the CCA, CAN and for en-route Users along the transmission pipeline, as well as an additional 20 Mm³/a to Gaborone from 2029. Supply of up to 260 Mm3/d of seawater for SS1, resulting in the production of up to 36.2 Mm3/yr of treated water to the CCA, while the remaining approximate 154 656 m3/d is returned to the sea as brine; and power supply totalling approx. 35.10 MWp for SS1 by 2037. The development and implementation of the desalination plant to meet the water demands of the CCA (Supply Scenario 1 (SS1) were found to be imperative and considered the most viable project. Based on the findings of the Feasibility Study, NamWater has thus decided to proceed with SS1 only and thus will develop the corresponding power supply option, which is the development of the #Gaingu PV Power Plant and associated infrastructure. As part of the Feasibility Study, potential Renewable Energy power supply systems were investigated to provide a part of the total demand of the desalination plant and water transmission system (WTS). In combination with the supply from the national utility, NamPower, the overall power supply of the desalination plant and the WTS throughout the project lifetime will be secured. Various case scenarios for the Renewable Energy Power Supply were investigated, corresponding to the various water supply scenarios (SS1, SS2 and SS3) and implementation phases (steps) determined for the desalination plant. The proposed #Gaingu PV Power Plant project was considered the most viable option (Figure 1). NamWater has thus decided to proceed with its development to supply power to SS1 of the desalination plant. Tender Link : https://www.namwater.com.na/index.php/bids-list
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