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AKARTA: Several areas of Jakarta are still suffering blackouts as the electricity supply to the super-high-voltage substation in Cawang is not yet fully operational.

The damaged substation caused major blackouts in the city on Thursday night.

“We’re still investigating the cause of the damage, whether it’s because of the weather or other factors,” state electricity company PT PLN spokesman, Bambang Dwiyanto, was quoted as saying by tempo.co.

Two major blackouts have been recorded this week in Jakarta. The first blackout took place on Tuesday night, and the next occurred on Thursday.

“Thursday’s blackout was not as severe as Tuesday’s; it lasted for about an hour, because the transfer of power was too slow,” Bambang said.

The main substation in Cawang receives its electricity supply from power plants in Muara Tawar and Bekasi. The super-high-voltage towers that connect Muara Tawar plant with Cawang are broken, disrupting supply to substations in Karet Lama, Taman Rasuna, Mampang Baru and some other parts of the city.

In addition, the towers connecting with the Bekasi plant are still under repair after being struck by lightning.