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Water Management

Rainwater Harvesting as Alternative Water Source for
Coal Yard Dust Suppression System

At TNB Janamanjung and Jimah East Power, rainwater is
harvested as an alternative water source for the coal
yard dust suppression system, reducing reliance on town
water. The collected rainwater is stored in a pond before being
directed to the water process tank for dust suppression. This
initiative helps optimize the use of town water in our power plant
operations.
Water source for cooling system 2023
The capacity of rainwater ponds are as below:
Our cooling process, facilitated through the open circuit
Water Stress Mapping based on Aqueduct by World Resources
Institute and location of TNB Genco Thermal Power Plants Main Cooling Water (MCW) system, operates efficiently by
utilizing seawater or river water and subsequently discharging
it back into the sea at the allowable discharge temperature
Alternative Water Sources for Power Plant Cooling and free chlorine level that meet DOE Standard. This ensures
System zero net water consumption, exemplifying our commitment to The rainwater ponds allow the collection and reuse of
sustainable practices by minimizing environmental rainwater, thus further helping to reduce the environmental
impact while maintaining operational efficiency. Our approach footprint of our generation sites.
Water plays a dual role in our plant operation, serving not adheres to global water conservation standards set forth by
only as a vital element in steam generation but also as a Electric Power Research Institute (EPRI).
crucial component within our cooling systems. To reduce our
dependence on town water sources, we implement alternative
sources such as seawater or river water, effectively reducing
our reliance on town water.

Simplified process of Main Cooling Water (MCW) system

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