Why did TNB shut down 333 power substations?

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TNB Temporarily Shuts Down 333 Power Substations Due to Flood Safety Concerns

Tenaga Nasional Berhad (TNB) has temporarily shut down 333 power substations across six Malaysian states as a precautionary measure against severe flooding. This decision was primarily driven by concerns for the safety of both consumers and TNB employees operating in affected areas. The shutdowns, which began impacting supply on December 18th, aimed to prevent potential electrocution hazards and damage to infrastructure.
Substations Closed Across Multiple States

As of noon on December 18th, a significant number of substations were taken offline. Pahang reported the highest number of closures with 137, followed by Selangor with 117, and Kuala Lumpur with 45. Melaka had 10 substations shut down, Negeri Sembilan had 17, and Kelantan reported seven closures. These figures reflect the widespread nature of the flooding and TNB's broad response to mitigate risks.
Impact on Consumers and Evacuation Centres

The temporary closure of these substations directly affected a considerable number of power consumers. In Pahang, 17,251 users were impacted, while Selangor saw 5,062 consumers affected. Kuala Lumpur had 4,450 users without power, Melaka 634, Kelantan 470, and Negeri Sembilan 284. To ensure essential services, TNB committed to providing electricity through portable generators at temporary evacuation centres that lost their primary power supply.
Safety Advisories Issued to the Public

In conjunction with the substation shutdowns, TNB issued critical safety advisories to the public. Residents in flood-affected areas were urged to adhere strictly to the instructions of local authorities. They were also warned to maintain a safe distance from all electricity poles, installations, and submerged cables, as these can remain live and pose a serious electrocution risk. Furthermore, consumers were advised to exercise extreme caution with electrical appliances in flooded premises, avoiding contact with them and switches while hands are wet. After floodwaters recede, it is recommended that consumers engage a registered wiring contractor to inspect their premises' electrical systems before restoring power.

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Why did TNB shut down 333 power substations?

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