KUALA LUMPUR: Rebates for consumers to compensate for the power outage last Wednesday will be subject to the findings on Tenaga Nasional Bhd (TNB)'s guaranteed service level (GSL) standards.

Energy and Natural Resources Minister Datuk Seri Takiyuddin Hassan said the Energy Commission and TNB were currently investigating the incident on July 27, which would take a month to complete from the date of the incident.

"Apart from establishing the cause and effect of the power outage, the investigation will also look into and determine if the incident adhered to GSL or not, which will then be the basis for determining whether the customers involved are eligible for rebates or not," he said in a statement today.

The GSL is a document by the Energy Commission to ensure the quality of electrical supply and service by TNB, he explained. 

He added that if TNB failed to comply with the GSL, a penalty in the form of rebates to consumers would be imposed.

He said during the blackout, about one million consumers in several states in Peninsula Malaysia had reportedly experienced power outages starting 12.39pm.

However, electricity was restored between 20 minutes and 2 hours and 21 minutes from the outage, which was lower than the latest GSL approved on Sept 22, 2020.

"The final decision on the eligibility for a consumer to get rebate is subject to the findings of the ongoing investigation.

"The GSL was created to safeguard the interests of consumers and improve the performance of TNB services.

"This standard can be found on the website of the Energy Commission," he said.