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The rainforests around the Cisokan and Cirumamis Rivers in West Java, Indonesia are home to several species of endangered animals, including the Javan leopard and Java leaf monkey. Already heavily deforested and threatened by agriculture use and hunting, the landscape will be further affected by the construction of a much-needed hydropower pumped storage project. But with the help of a new approach, the project could conserve and expand habitats well above the without-project baseline as well as improve local livelihoods.
The World Bank is funding a pumped storage hydropower project on the Cisokan and Cirumamis Rivers in West Java, Indonesia. In a pumped storage system, pump turbines store energy by transferring water from a low reservoir to a high reservoir during off-peak hours. During periods of high electricity demand, the stored water is released through the turbines to the lower reservoir to generate hydroelectric power. The 1040-MW Upper Cisokan pumped storage project, estimated to cost a total of $900 million, would develop two dams and reservoirs, transmission lines, a power station, and an access road. The project objective is to increase power capacity and reduce the number of outages in the Java-Bali power generation system.