Junjung Kedah Substation is a 500kV substation located in Junjung Kedah, Kedah, Malaysia.

The Junjung Kedah Substation project’s construction has begun in 2019. The works are expected to be commissioned in 2021.


Junjung Kedah Substation project, which is an upgrade substation, will be operated by Tenaga Nasional.

The designed voltage level of the substation is 500/275kV and the operating voltage level is 500/275kV.

The step-in voltage of the project is 500kV and the step-out voltage is 275kV. Upon completion, the substation will have a capacity of 3150MVA.

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By GlobalData

Junjung Kedah Substation project development status

The development of the Junjung Kedah Substation project was approved by The Energy Commission in 2019. The project is expected to be commissioned in 2021. Approximately $40.98m was financed by the authorities to undertake the construction works of the project.

About Tenaga Nasional

Tenaga Nasional Bhd (TNB) is an electric utility. Its operations cover the electricity production and supply value chain, including generation, transmission, and distribution of energy. It develops, operates, and maintains a portfolio of power generating units. The company produces electricity using the crude oil, hydro, natural gas, coal and gas sources. TNB also supplies transformers and switchgears in Brunei, Saudi Arabia, Pakistan, Thailand, Vietnam, and Indonesia; has interests in district cooling facilities in the UAE; and provides operation and maintenance services in Saudi Arabia, Kuwait and Pakistan.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.