The project consists of 5MWp solar photovoltaic (PV) plants with a 11.5 MW/6.75 MWh centralised battery energy storage system (BESS) with grid forming inverters (GIF) at Kawene, Undine Bay, and Bouffa in UNELCO’s Port Vila, Efate concession area grid which serves approximately 30% of Vanuatu’s population. The BESS will enhance climate resilience and stabilise grid integration of the PV plants. The project will also improve the reliability of the electricity supply to the water pumping station of Port Vila and thereby enhance the resilience of the water supply system. The project will contribute to Vanuatu’s NDC target by doubling the current amount of grid integration of renewable energy and decreasing diesel fuel consumption by up to 32%.