Asahimas Chemical power station

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Asahimas Chemical power station is an operating power station of at least 300-megawatts (MW) in Cilegon, Banten, Indonesia. It is also known as 日本旭硝子玻璃公司自备电厂.


Table 1: Project-level location details

Plant name Location Coordinates (WGS 84)
Asahimas Chemical power station Cilegon, Banten, Indonesia -6.024754, 105.942635 (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: -6.024754, 105.942635

Project Details

Table 2: Unit-level details

Unit name Status Fuel(s) Capacity (MW) Technology Start year Retired year
Unit 1 operating coal - unknown, bioenergy - unknown 150 unknown 2019
Unit 2 operating coal - unknown, bioenergy - unknown 150 unknown 2019

Table 3: Unit-level ownership and operator details

Unit name Owner
Unit 1 Asahimas Chemical [100.0%]
Unit 2 Asahimas Chemical [100.0%]

Project-level captive use details

  • Captive industry use (heat or power): chemicals
  • Captive industry: Power


In February 2016 Japan's Ministry of Economy, Trade and Industry, Ernst & Young ShinNihon LLC, and Japan External Trade Organization released a study of a 3 x 150 MW coal plant sponsored by Asahi Glass at Ayer near Cilegon in Banten province. According to the report, plants of 600 MW in size and using ultrasupercritical combustion were initially studied, modeled after the Hirono power station in Japan; however, such plants would require bituminous coal, which in Indonesia is reserved for export. For domestically available subbituminous coal, the study observed that a unit size of 1,000 MW or larger would be necessary. For smaller units, ultra-supercritical combustion was considered to be impractical with Indonesian subbitumious coal due to the expensive materials that would be necessary to prevent corrosion. For that reason, the study covered not only ultra-supercritical but also supercritical, subcritical, and circulating fluidized bed combustion.[1]

In April 2015 Asahi Glass of Japan said it plans to build a 250 MW coal-fired power plant in Indonesia, at the site of the company's Asahimas Chemical factory to generate its own electricity for producing chemical products. The company plans to spend a total of US$400 million on the project. The plant would use locally produced coal, as well as some biomass fuel. It is scheduled to go online in 2017, according to the sources.[2]

In April 2016 Kawasaki Heavy Industries said it had received an order from Taiwanese company Formosa Heavy Industries Corp. (FHI) for two 150 MW class steam turbine power generation facilities, to install at an Asahi Glass factory in Indonesia.[3] It is planned for 2018.[4]

Construction of the plant began in Q4 of 2016.[5] In September 2018 Asahimas' parent company Asahi Glass stated that the Banten chemical factory expansion would begin operations in Q2 2021.[6]

The Asahi Glass Company (AGC) 2020 Integrated Report and Financial Results report indicated that the power station at the Asahimas Chemical plant began operating in the second quarter of 2019.[7][8] As of July 2023, satellite imagery from Planet also indicated that coal shipments were arriving at the power station's jetty.

In their 2022 Integrated Report, published in July 2023, AGC stated that GHG emissions from in-house power generation facilities would be addressed on the "medium term". Solar power and the use of biofuels were both mentioned.[9]

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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.