TNB
Tenaga Nasional Berhad, Malaysia's national electricity utility, the largest electricity company in Southeast Asia.
TNB is Malaysia's national electricity utility. Data centres held 43% of its contracted grid capacity, 5.9 GW across 38 projects, when a civil-society group called for a moratorium on 26 June 2026.
Last refreshed: 4 August 2026 · Appears in 1 active topic
Can Malaysia's national grid absorb 5.9 GW of data-centre load without degrading household electricity supply?
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Data Centres: Boom and BacklashBackground
TNB, Tenaga Nasional Berhad, is Malaysia's national electricity utility and the largest electricity company in South-East Asia. It is wholly owned by Khazanah Nasional, Malaysia's sovereign wealth fund, and generates, transmits and distributes electricity across Peninsular Malaysia, with subsidiaries serving Sabah and Sarawak.
Data centres held 43% of TNB's contracted grid capacity, equivalent to 5.9 GW across 38 approved projects, as of June 2026, implying total contracted capacity of roughly 13.7 GW. That concentration, the highest reported for any national utility in the 2026 data-centre investment cycle, prompted Suaram director Kua Kia Soong to call publicly for a moratorium on further approvals on 26 June, while Johor state had already rejected around 30% of data-centre applications on grid-capacity grounds.
TNB sits at the centre of a policy tension between the foreign investment and fiscal revenue that hyperscale data centres bring and warnings from civil society and some state governments that approvals are outpacing the grid's capacity to protect residential and industrial supply.