An aerial view of the Jatigede Dam.
The Jatigede Dam in Indonesia, built by POWERCHINA, recently received the project handover certificate, meaning that the dam has been officially handed over.
This handover involves the second phase of the Jatigede Dam, primarily covering the water conveyance and power generation system, as well as the downstream regulating dam.
During construction, POWERCHINA conducted extensive research to address the unique geological conditions of soft and extremely soft rock. POWERCHINA utilized techniques such as reinforced concrete ring beams, reverse arch excavation and support for tunnel floors, and rock-fill concrete. These methods were adapted to local conditions to successfully design and build large-diameter, deep-excavation shaft groups in soft rock, effectively resolving technical challenges like large deformations and sudden water inflows during excavation.
The Jatigede Dam has an installed capacity of 110 megawatts and is equipped with two 55 MW Francis turbine-generator units, a designed diversion flow of 73 cubic meters per second, and an average annual power generation of about 450 million kilowatt-hours.
The dam will meet the electricity needs of approximately 500,000 households and will help ensure a secure power supply to the Java grid, increasing the proportion of clean and renewable energy, promoting economic development, and improving livelihoods in Indonesia.
