Construction of Renewable Power Generation and Evacuation System in Vanuatu

The ITB consists of 2 Lots; Lot 1 -Larimaat  Hydropower Site and Lot 2-Nambaranguit Hybrid (Solar +Hydro) Power site. The physical work for each lot may include any but is not limited to all the following:

Lot 1: Larimaat Site

·        Construction of approximately 6,290W hydroelectric generation system with 5 identical units of 1.75Kw Pelton turbines (1,258W per turbine) installed in the Powerhouse. The turbines are required to have a total flow rate of 16.2 l/s with a total combined output of 23,907 W (1,258W per turbine). The length of the penstock connecting the intake to the powerhouse is approximately 380m.

·        Construction of approximately 4km of single-phase low-voltage underground distribution network to connect the estimated 112 users currently living in the targeted communities and is required to be installed at 600V and 230V. 

·        Design and Construction of a powerhouse with internal dimensions of 6.28 meters x 3.82 meters (24m2) with 2.5 meters height. The powerhouse should be constructed with a proper ventilation system. It will be constructed with a 250mm high reinforced concrete slab and walls made of concrete hollow blocks. A shed-type roof will be built with a timber structure treated for termites and a Colourbond steel roofing sheet with thermal insulation.

Lot 2: Nambaranguit Site

 ·        Construction of approximately 3,493W hydroelectric generation system with 3 identical units of 1.75kW Pelton-type turbines (1,164W per turbine) installed in the Powerhouse. The turbines are required to have a total flow rate of 10.4 l/s with a total combined output of 3,493W (1,164W per turbine). The length of the penstock connecting the intake to the powerhouse is approximately 380m.

·        Construction of a 25kW PV array on an elevated canopy with SE-NW orientation is expected to be installed as part of the project. It is expected that the PV and hydroelectric systems will deliver a combined generation capacity of up to 28000W.

·        Construction of approximately 6.8km of single-phase low-voltage hybrid (underground and aerial) distribution network to connect the 167 potential users currently living in the targeted communities and is required to be installed at 600V.

·        Design and Construction of a powerhouse with internal dimensions of 6.28 meters by 4.32 meters (27.12m2) with 2.5 meters height. The powerhouse should be constructed with a proper ventilation system. It will be constructed with a 250mm high reinforced concrete slab, and walls of concrete hollow blocks. A shed-type roof will be built with a timber structure treated for termites and a Colourbond steel roofing sheet with thermal insulation.

·        Site establishment and construction preliminaries on each site;

·        Project completion including site demobilisation and clean up on each site.