Singapore’s Kusu Island – or Tortoise Island – is home to the popular Da Bo Gong Temple and three Malay shrines. But it is also completely self-reliant in using solar power to produce its water and electricity.
The island’s solar photovoltaic (PV) and desalination systems became operational in the fourth quarter of 2022, in time for the island’s annual pilgrimage season, and could even support the surge in demand when over 22,000 visitors went there in October 2023.
As a backup, batteries housed in two 40-foot containers can store enough power to last two days if the solar panels cannot produce electricity because of issues such as cloud cover or rain.
Kusu Island is managed by the Singapore Land Authority (SLA) and is the site of the annual Kusu pilgrimage season. There are no permanent residents on the island.
The solar panels have a power output of 140 kilowatt peak (kWp) or 230 megawatt-hours (MWh). The electricity is used in common facilities such as toilets and shower areas, as well as a food center that is open only during the pilgrimage season.
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