Cilacap Sumber power station

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Cilacap Sumber power station is an operating power station of at least 2260-megawatts (MW) in Karangkandri, Kesugihan, Cilacap, Central Java, Indonesia. It is also known as 芝拉扎电站.


Table 1: Project-level location details

Plant name Location Coordinates (WGS 84)
Cilacap Sumber power station Karangkandri, Kesugihan, Cilacap, Central Java, Indonesia -7.68575, 109.08977 (exact)

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

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Unit-level coordinates (WGS 84):

  • Phase I Unit 2, Phase I Unit 1: -7.68575, 109.08977
  • Phase II Unit 3, Phase III Unit 4: -7.6832417, 109.096384

Project Details

Table 2: Unit-level details

Unit name Status Fuel(s) Capacity (MW) Technology Start year Retired year
Phase I Unit 2 operating coal - subbituminous 300 subcritical 2006
Phase II Unit 3 operating coal - subbituminous 660 supercritical 2016
Phase I Unit 1 operating coal - subbituminous 300 subcritical 2006
Phase III Unit 4 operating coal - subbituminous 1000 ultra-supercritical 2019

Table 3: Unit-level ownership and operator details

Unit name Owner
Phase I Unit 2 PT Sumber Segara Primadaya [100.0%]
Phase II Unit 3 PT Sumber Segara Primadaya [100.0%]
Phase I Unit 1 PT Sumber Segara Primadaya [100.0%]
Phase III Unit 4 PT Sumber Segara Primadaya [100.0%]


Cilacap power station is a two-unit coal-fired power plant with a total capacity of 600 MW in Central Java Province. The plant began operating in 2006.[1] The Cilacap Sumber power station was the first large-scale Indonesian power plant completed since the country's 1997-98 financial crisis.[2]

The plant is owned by PT Sumber Segara Primadaya (S2P), which is owned by PT Sumberenergi Sakti Prima (SSP) (51%) and PT PLN subsidiary PT Pembangkitan Jawa-Bali (PJB) (49%). The plant's construction cost $501 million. The plant's operator is PT Segara Sumber Prima.[3][4]

In October 2022, Phase I (2 x 300 MW) was included on a list of power stations in Indonesia that were proposed candidates for early retirement due to poor technical, economical or environmental findings.[5]

Description of Unit 3 (660 MW) and Unit 4 (1000 MW) Expansion

In April 2013, the sponsors secured a $700 million loan from the China Development Bank to fund the construction of Unit 3, described as a 660 MW unit. At that time, the company expected to begin construction within 3-6 months.[6][1]

In December 2014, with construction of Unit 3 scheduled to be completed by the end of 2016, Indonesian government authorities stated that they were urging the plant's owners to accelerate the construction of both the plant and the transmission lines so that it could come online by the end of 2015, in order to help mitigate the looming Java power crisis.[7]

Unit 3 was completed and began commercial operations in June 2016.[8]

In June 2015, it was reported that PT Sumber Segara Primadaya had signed an engineering, procurement, and construction (EPC) agreement with Chengda Engineering Company of Chengdu, China. Under the contract, construction of Unit 4 would be completed by 2018. According to the report, the size of the project was 1,000 MW.[9]

In November 2015, PT PLN signed a power purchase agreement for Unit 4, which was reported to be targeted for 2020 operations.[10]

Cilicap Sumber power station Unit 4 is also known as Jawa-8.[11]

Unit 4 entered construction in October 2016. Cost is estimated at US$1.389 billion.[12] In the 2018-2027 RUPTL, Unit 4 was listed as being 945 MW.[13] In November 2018, PLN stated that Unit 4 would be completely built by October 2019.[14]

The government's long-range plan for 2019-2028 lists a completion date of 2020 for Unit 4.[15] Unit 4 was commissioned in October 2019.[16] Unit 4 generates a total of 1,000 MW. It is sometimes described as 945 MW because 55 MW is used to power the Cilacap Sumber plant itself.[16]

Financing for Units 3 and 4

In 2013, the China Development Bank provided a loan of US$700 million for the development of unit 3.[17]

In 2016, financing was secured for unit 4. The Bank of China provided a loan of US$1 billion, China Development Bank provided a loan of US$98 million, and Bank Rakyat Indonesia provided a loan of US$300 million.[18]

Environmental Impact

Residents living near the Cilacap Sumber power station frequently have coal ash from the power station blown into their village, causing serious health impacts. One resident stated that her grandchild has had to be hospitalized repeatedly due to respiratory ailments. Doctors advised that families with children move away from the power station to avoid the dangerous pollution. 105 families have left the area due to pollution, out of 250 total that lived there before the power station was constructed.[19]

An analysis of air pollution measurements in Central Jakarta from July and August 2023 found that nearby coal plants contributed between 5 – 31% of fine particle pollution (PM2.5) on individual days. The study, conducted by the Centre for Research on Energy and Clean Air (CREA), reported that the coal plants with the highest average contribution to air pollution in this period were Cikarang Babelan power station, Indramayu power station, and Cilacap Sumber power station.[20]

Articles and Resources


  1. 1.0 1.1 “PLN Long Term Electricity Plan (2013-2023),” presentation by Moch. Sofyan, Head of New & Renewable Division of PT PLN (Persero), 06 March 2014
  2. "Coal-Fired Power Plants in Indonesia" Power Plants Around the World, accessed August 17, 2011.
  3. "Coal-Fired Power Plants in Indonesia" PSIREN, accessed August 17, 2011.
  4. "Indonesia's Cilacap power plant operation halted due to coal supply disruption", June 28, 2011.
  5. Hasil Kajian IESR: Ada 12 PLTU yang Bisa Dipensiunkan pada 2022-2023, Ini Daftarnya, Kontan, October 11, 2022
  6. Lili Sunardi. PLTU Cilacap: Sumber Segara Primadaya Dapat Pinjaman US$700 Juta. Bisnis Indonesia, 3 Apr. 2013.
  7. Gentur Putro Jati. Takut Ancaman Krisis Listrik, Pemerintah Kebut PLTU Cilacap. CNN Indonesia, 8 Dec. 2014.
  8. "PT SSP – Cilacap Coal Power Plant Expansion 660 MW – Central Java," Construction Intelligence Center, accessed October 2016
  9. "Sumber Segara, China's Chenda to start construction of Cilacap mega power plant," RambuEnergy, June 10, 2015
  10. "PLN Teken Kontrak PLTU Cilacap Ekspansi 1000 MW,", 6 November 2015
  11. "Market Sounding IPP Procurement for 2016," PT PLN, 8 December 2015
  12. Michael Agustinus, "PLTU 'Raksasa' di Cilacap Rp 18,2 T Mulai Dibangun," Cybernews, October 12, 2016
  13. Rencana Usaha Penyediaan Tenaga Listrik (RUPTL) 2018-2027, PT PLN Persero, V-4
  14. Kebutuhan meningkat, PLN akan tambah pasokan batubara, Kontan, Nov. 27, 2018
  15. Rencana Usaha Penyediaan Tenaga Listrik (RUPTL) 2018-2027, PT PLN Persero, p.V-43
  16. 16.0 16.1 PLTU Ekspansi II Mulai Beroperasi, Satelit Post, Oct. 7, 2019
  17. "China Development Bank loan for construction of Cilacap power plant extension (Linked to #34801)". Retrieved 2020-11-04.
  18. "Private Participation in Infrastructure (PPI) - World Bank Group". Retrieved 2020-11-04.
  19. Riky Ferdianto, Voices Against the Waste, Tempo, June 11, 2021
  20. "Work From Home (WFH) and other gimmicks cannot clear Jakarta's air," Centre for Research on Energy and Clean Air, August 25, 2023

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.