Case studies

Reducing water consumption through the Castle Peak Power Station (CPPS)’s Process Water Treatment Project

Power generation involves the use of large volumes of water, so improving water management is a key way to reduce water consumption. A project to enhance the existing process water management facilities at CPPS was begun in 2020 and completed in 2023.

The process water recycling treatment system was installed to treat process water and enable recycling in CPPS following the surrender of the Tsang Tsui Ash Lagoon (TTAL) to the government. Wastewater treated by this system will be suitable for reuse at the plant. In addition, with this new system, the water management process at CPPS no longer depends on the TTAL. The land will be released for alternative land for the benefit of the community.