TNB’s 3rd USC coal-fired power plant achieves national grid connectivity


Unit 1 of Jimah East Power Sdn Bhd’s coal-fired power plant in Port Dickson, Negri Sembilan, has successfully achieved the first synchronisation on Dec 10.

The 70%-owned subsidiary of Tenaga Nasional Bhd (TNB) saw the first synchronisation of Unit 1’s generator to the national grid.

Thus, it has commenced supplying electricity to the Malaysian grid system for the first time, as the unit is reaching completion.

“Today’s milestone is significant as it confirms the project’s progress at 97%,” TNB chairman Tan Sri Leo Moggie said in a statement during a ceremony held at the plant site on Monday.

The power plant is TNB’s third ultra-supercritical (USC) coal-fired power plant after Manjung 4 and Manjung 5 in Lumut, Perak, and the country’s fourth USC coal power plant.

The other USC coal power plant is Malakoff Corp Bhd’s Tanjung Bin Energy Power Plant, also known as T4, located in Kukup, Johor. 

The RM12 billion Jimah East Power comprises two units of a 1,000MW USC coal-fired power plant.

Unit 1 is scheduled to start commercial operation in June 2019 and Unit 2 in December 2019.

Power generated from the Jimah East Power facility will be sold to TNB under a 25-year power purchase agreement.

“Toshiba Group is committed to contributing the realisation of a low-carbon economy and a stable power supply in Malaysia by providing world- leading power generation technologies,” Toshiba Energy Systems and Solutions Corp (Toshiba ESS) director and GM Takao Konishi said at the ceremony.

USC technology has higher efficiency at 40% compared to pulverised coal-firing technology that has a 36% efficiency.

This results in less coal required and reduces greenhouse gases that are released.

In Malaysia, fossil fuels are still the major source of energy at 98%.

Coal and natural gas account for roughly a 50:50 ratio to the national power generation mix, while 1% to 2% is generated by hydro and solar.

Energy, Technology, Science, Climate Change and Environment Minister Yeo Bee Yin is pushing to increase the contribution of renewable energy (excluding hydro) from the current 2% to 20% by 2025.

The USC technology shows  that a coal-fired power plant could be environmentally-friendly, while having a high power density and competitive economic value.