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https://www.tnb.com.my/sustainability/esg-stories/

Toxic Emissions & Waste

Ash contributes to the majority of the Scheduled Waste
(SW) generated by TNB. As reflected in our internal tracking
systems, this significant amount of ash is directed to a landfill
or diverted to a recycling facility.
Fly ash has substantial potential for reuse, particularly in Through the ASH Management System, we have taken
construction, and we actively explore opportunities to recycle significant steps to mitigate the environmental risks
this material. By using fly ash in the production of concrete associated with its production while exploring ways to recycle
and bricks, we can increase the amount of fly ash diverted and repurpose it. We remain focused on positively contributing
from landfills, hence promoting a circular economy. In 2024, to Malaysia’s environmental goals as we continue to refine and
we collaborated with ten construction or cement companies Figure 1: Login Page of ASH Management System enhance our processes. In conclusion, TNB has taken great
to make use of the fly ash in the production of concrete and steps to ensure the ash’s life cycle is appropriately managed
bricks. However, when recycling is not feasible, our system The system’s go-live date occurred on 15 May 2024, during and proper disposal and recycling are conducted. This is in
ensures that the ash is transported to secure, licensed landfill which users began inputting data. Any technical issues were line with TNB’s strong drive for sustainability and promoting
sites that adhere to environmental standards stipulated by the addressed, and relevant personnel were trained. a circular economy.
Department of Environment (DOE).
The engagement and rollout phase commenced on Commitment to a Sustainable Energy Future
1 September 2024, ensuring all relevant users, including
Integrating Technology for Efficient Ash Management Health, Safety, and Environment (HSE) personnel, became While coal-fired power plants continue to play a role in
familiar with the system. Since then, the ASH Management meeting current energy demands, our long-term vision is
System has undergone continuous implementation to ensure aligned with global decarbonization goals. We are accelerating
Our ASH Management System is vital to our broader
strategy to enhance environmental sustainability. The long-term efficiency and effectiveness. investments in renewable energy, energy efficiency, and
system utilises digital tools to streamline the process, making it emerging clean technologies to drive the energy transition
easier to manage consignment notes and track the life Verification and endorsement mechanisms are built into the forward. By operating our existing coal plants responsibly and
system to ensure compliance with our internal policies and
cycle of the ash. Powerplants are required to submit data reducing their environmental impact, we are demonstrating
electronically, allowing for real-time updates on ash national regulations. Every step, from waste generation to that economic growth and environmental responsibility can
movements. This digital integration ensures that we can final disposal, is carefully monitored to prevent environmental coexist.
monitor every stage of the ash management process risks and maintain operational integrity.
efficiently. This balanced approach reflects our commitment to the
Aligning with Our Scheduled Waste Roadmap Goals energy trilemma: delivering affordable, reliable, and
The system was designed based on input gathered from sustainable energy. It is a journey that requires collaboration,
coal power stations during the development phase from Responsible fly ash management is part of our wider TNB innovation, and an unwavering focus on our shared future.
December 2023 to March 2024. This collaboration ensured Scheduled Waste Roadmap 2030, which outlines goals for Revision History:
that the system met the needs of those directly involved in ash improving waste management, increasing recycling rates, and 30 March 2025: Added data on fly ash and bottom ash constitution, and added
management. minimising our operations’ overall environmental impact. details on collaboration with construction or cement companies in 2024.

Carbon Management Water Management Biodiversity & Land Use Opportunities in RE Toxic Emissions & Waste
Human Capital Development Health & Safety Labour Rights Supply Chain Management Community Relations Corporate Governance