inp.polri.go.id - Jakarta. The Indonesian Anti-Corruption Society (MAKI) expressed its full support for the Indonesian National Police (INP) Anti-Corruption Corps (Kortas Tipikor) in investigating alleged corruption in the coal supply to several coal-fired power plants (PLTU), which is suspected of triggering blackouts in Sumatra and several other regions in Indonesia.

MAKI Coordinator, Boyamin Saiman, stated that his organization will oversee the investigation to its completion. He also expressed his readiness to submit any additional data it has to assist investigators in uncovering the case.

"I fully support Kortas Tipikor in handling alleged corruption related to coal. I will closely monitor it, and I will provide additional data that I have," Boyamin told reporters on Tuesday (7/7/2026).

According to Boyamin, the alleged irregularities in coal supply have allegedly been going on for quite some time. He claimed to have obtained data indicating alleged manipulation of both the quality and quantity of coal supplied.

"Because this is suspected to be a long-standing affair, and there are clear allegations of manipulation, as the trader bought it for 3,000, but this trader sold it to PLN for 4,000. I already have the data. This is clearly detrimental to PLN, and I will monitor it," he said.

Meanwhile, the INP’s Anti-Corruption Corps continues its investigation into alleged corruption and money laundering (TPPU) related to the procurement and fulfillment of coal supply requirements for several PLTUs between 2018 and 2026. The case was officially elevated to the investigation stage on July 4, 2026.

The Head of INP Anti-Corruption Corps, Inspector General Totok Suharyanto, explained that investigators have found alleged legal irregularities in the coal procurement and fulfillment process involving several companies.

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