Asam-Asam power station

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Asam-Asam power station is an operating power station of at least 260-megawatts (MW) in Asam-Asam, Jorong, Tanah Laut, South Kalimantan, Indonesia with multiple units, some of which are not currently operating. It is also known as Kalselteng-2.


Table 1: Project-level location details

Plant name Location Coordinates (WGS 84)
Asam-Asam power station Asam-Asam, Jorong, Tanah Laut, South Kalimantan, Indonesia -3.9265336, 115.105805 (exact)

The map below shows the exact location of the power station.

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Unit-level coordinates (WGS 84):

  • Unit 1, Unit 2, Unit 5, Unit 6, Unit B-3, Unit B-4: -3.9265336, 115.105805

Project Details

Table 2: Unit-level details

Unit name Status Fuel(s) Capacity (MW) Technology Start year Retired year
Unit 1 operating coal - lignite, bioenergy - wood & other biomass (solids) 65 unknown 2013
Unit 2 operating coal - lignite, bioenergy - wood & other biomass (solids) 65 unknown 2013
Unit 5 construction coal - lignite 100 circulating fluidized bed 2023
Unit 6 construction coal - lignite 100 circulating fluidized bed 2023
Unit B-3 operating coal - lignite, bioenergy - wood & other biomass (solids) 65 subcritical 2000
Unit B-4 operating coal - lignite, bioenergy - wood & other biomass (solids) 65 subcritical 2000

Table 3: Unit-level ownership and operator details

Unit name Owner
Unit 1 PT PLN (Persero) [100.0%]
Unit 2 PT PLN (Persero) [100.0%]
Unit 5 PT PLN (Persero)
Unit 6 PT PLN (Persero)
Unit B-3 PT PLN (Persero) [100.0%]
Unit B-4 PT PLN (Persero) [100.0%]


The Asam-Asam power station originally consisted of four units: the two-unit, 130-MW Banjarmasin Asam-Asam-A plant, built in 2000; and the two-unit, 130-MW Kalsel Asam-Asam plant, built in 2013.[1] All four existing units are owned by PLN.

In June 2016, the plant suffered damage to its control system that led to blackouts in some areas of South and Central Kalimantan. The problems were blamed on postponement of maintenance due to Ramadan. A team of experts from Japan was working to fix the damage.[2]

In October 2021, the power station began co-firing with 5% woody biomass.[3]

Proposed Expansion

As of 2013, PLN was planning to add two more 100-MW units, known as the Banjarmasin Asam-Asam-B power station; the two additional units are described in the media at Units 5 & 6 of the Asam-Asam plant or Units 5&6 of Kalselteng-2. The original plan was apparently to build three additional units; this plan was scrapped due to various problems, including investors withdrawing from the project. In May 2013, though, the project was reborn, but now as two rather than three units.[4]

According to an October 2013 report, development of the project "is still waiting for a letter of feasibility of PT PLN (Persero) from the government." The report continued: "Garibaldi Thohir, President Director of Adaro Energy, said the government’s guarantee is needed because even as Independent Power Producer (IPP), South Kalimantan coal power plant is including on Public Private Partnership (PPP) project scheme."[5]

As of January 2015, South Kalimantan government officials were urging PLN to accelerate the expansion project, in order to help prevent blackouts in the area.[6]

In November 2015, it was reported that two units of 100 MW each had been pre-qualified for tender.[7]

In February 2016, the project entered the auction process. The process was considered likely to finish in 2016, but PLN officials stressed that success was not a certainty.[2]

Construction began in July 2017. Commercial operation of Units 5 and 6 is planned for July and October 2020.[8]

In February 2020, it was reported that hundreds of construction workers who had been building the expansion had been laid off and that construction was stalled.[9]

As of October 2021, the expansion had an anticipated start date in 2022.[10]

In March 2023, test operations and synchronization began for Asam-Asam power station Unit 5. Target operation for the expansion was slated for November 2023.[11]

In August 2023, local residents raised concerns that they would not be given priority for job recruiting when Units 5 and 6 began operating. A representative of PLN confirmed that residents of the nearby community would be given priority for hiring at the new units.[12]

As of January 2024, the expansion units were not yet operating. Synchronization tests were underway.[13]


On July 31, 2017, ITOCHU Corporation announced that it had concluded an EPC (Engineering, Procurement, and Construction) agreement for the Kalselteng-2 Units 5 & 6 project.[14] The Japan Bank for International Cooperation (JBIC) and MUFG Bank agreed to cofinance the project with approximately US$241 million in loans. JBIC is providing JPY10.1 billion and US$53 million in loans (for a total of approximately US$144 million), and MUFG is providing JPY6.8 billion and US$36 million in loans (for a total of approximately US$97 million). MUFG's portion of the financing is insured by Nippon Export and Investment Insurance.[15][16]

In October 2020, MUFG announced that it was planning to halve its overseas coal investments by 2030 and eliminate them by 2040.[17]

Articles and Resources


  1. PLN Siapkan 2 PLTU Baru, Banjarmasin Post, 26 Oct. 2013.
  2. 2.0 2.1 "PLN Invites Japanese Experts to Fix Asam-asam Steam Power Plant," Media Indonesia, 20 June 2016
  3. PLN konsisten turunkan emisi PLTU Asam Asam, Antara News, August 3, 2022
  4. PLTU Unit Lima Dan Enam Siap Dibangun, Kalimantan News, 27 May 2013.
  5. Wilda Asmarini, "Adaro-Korea Power Plant Project Awaits Government's Guarantee," Indonesia Finance Today, October 25, 2013
  6. Ayo Percepat Pembangunan PLTU Baru, Banua Online, 16 Jan. 2015.
  7. "Tender Info: PLN Prequalifies EPC of Sulsul Barr-2 Kalselteng-2 Coal-Fired Steam Power Plants," RambuEnergy, November 15, 2015
  8. "Kalselteng-2 Coal-Fired Power Plant Project," Energy Central, August 7, 2017
  9. Ratusan Pekerja Proyek PLTU Asam-Asam Unit 5-6 Dirumahkan,, Feb. 15, 2020
  10. Rencana Usaha Penyediaan Tenaga Listrik (RUPTL) 2021-2030, PT PLN Persero
  11. Pasok Listrik Kalselteng dan Pembangunan IKN, PLN Tambah 100 MW di Unit 5 PLTU Kalselteng 2, Balikpapan, March 12, 2023
  12. Warga Desa Mengadu, Minta PLTU Asam Asam Merekrut Warga Lokal, PT Duta Prokal, August 11, 2023
  13. Laik Sinkron, PLTU Kalselteng 2 (2×100) MW Unit 1 Siap Pasok Listrik Ke Sistem Interkoneksi, Banjarbaru Klik, January 14, 2024
  14. "ITOCHU Announces EPC Agreement for Coal Fired Power Plant in Indonesia," ITOCHU press release, July 31, 2017
  15. Buyer's Credit for National Power Company of Indonesia, Japan Bank for International Cooperation, June 21, 2017
  16. Republic of Indonesia / Loan Insurance for Kalselteng 2 Coal-fired Power Plant Project, Nippon Export and Investment Insurance, June 21, 2017
  17. MUFG to Join Rivals in Phasing Out Coal Power Financing, Bloomberg Law, Oct. 15, 2020

Additional data

To access additional data, including an interactive map of coal-fired power stations, a downloadable dataset, and summary data, please visit the Global Coal Plant Tracker on the Global Energy Monitor website.