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About Us


Stesen Janakuasa Sultan Azlan Shah, Manjung

[registered name TNB Janamanjung Sdn. Bhd. (TNBJ)], a wholly-owned subsidiary of Tenaga Nasional Berhad (TNB) was incorporated in 1996. Located on a man-made island in Manjung District, Perak, the total land area of 325 hectares comprises of plant facilities, coal yard, 25-year ash pond and reserve land.
The design of TNBJ is suitable for base-load operation with high availability, reliability and ability to participate in system frequency regulation in compliance with the Malaysian and approved international standards to operate safely and economically whilst conserving the surrounding nature.

Out of the 21,628MW installed capacity-of which 11,363MW is contributed by TNB – Perak state is the largest electricity power producer in Peninsular Malaysia. In future, Perak will continue to be the largest electric power producer with 30% of power generation capacity in Peninsular Malaysia.

TNB Janamanjung generates 3,100MW of electricity from its three units of 700MW and one unit of 1,000MW coal-fired power plant. The three units of 700MW are known as Generating Facility 1 (GF 1) and the 1,000MW unit is known as Generating Facility 2 (GF 2) or Manjung 4. GF 1 project was started in 1999 and launched by the Sultan of Perak in 2005. On the other hand, Manjung 4 began its commercial operations on 14th April 2015.

Manjung 4, the most efficient power plant in South-East Asia, utilizes the latest ultra-supercritical combustion technology. The power supplied by Manjung 4 boosted the generating capability of TNBJ to 3,100MW and turning it into Peninsular Malaysia’s largest independent power producer to date. The 1,000MW of power generated – equivalent to the electricity needs of two million households – will contribute towards further stability of the grid system and enhanced reliability of supply.

TNB Janamanjung, through the deployment of the most modern clean coal technologies, meets the stringent environmental standards set by the World Bank and Malaysia’s Department of Environment. Before its construction, a thorough environmental impact assessment was carried out to protect and conserve the surrounding flora and fauna of the mangrove.

The plant uses low NOx burners, desulphurization facility and electrostatic precipitators to keep NOx and Sox emission low. Further, in line with its motto “Technology in Harmony with Nature”, the power plant is further equipped with a smart weather-based coal dust suppression system for the coal stock yard, management representing the first of its kind in the country.

Over the years, TNBJ has been certified to various standards, namely ISO 9001:2008 (Quality Management System), ISO 14000:2004 (Environmental Management System) and OSHAS 18001:2007 (Occupational Health and Safety Management System) in place to maintain business performance. In August 2013, TNBJ received the British Standards Institution (BSI) PAS 55-1:2008 (Optimized management of physical assets) Certification and was the first IPP to achieve the certification in South-East Asia. In March 2015, TNBJ also received the Business Continuity Management (BCM) ISO 22301:2012 certification and is the first power plant in Malaysia to achieve this certification. This certification was recognized by the Malaysia Book of Records and is an extension phase of PAS 55-1:2008.

Being a responsible corporate organization, TNBJ has carried out a lot of Corporate Social Responsibility (CSR) Programs especially involving the local community, the Manjung District as well as the Perak State. This in a way is a major factor in the good relationship that TNBJ has been enjoying with the community and the stakeholders. In August 2013, TNBJ won two categories in ASEAN Coal Awards – i) Corporate Social Responsibility (CSR): “TNBJ’s CSR – Station in Harmony with Community” and ii) Special Project: “TNBJ Quality Journey to PAS55 Certification”. In April 2014, March 2015 and April 2016, TNBJ also won awards in Global CSR Summit and Awards in Indonesia namely Product Excellence Award, Best Environmental Excellence Award and CSR Leadership Award and Best Workplace Practices.

Most recently, TNBJ won the ‘Anugerah Cemerlang Keselamatan dan Kesihatan Pekerjaan Kebangsaan 2016’ for the ‘Anugerah Kemudahan Elektrik’ category and Datuk Shamsul Ahmad (Managing Director) won the ‘Anugerah Ketua Pegawai Eksekutif (CEO)’ category.

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