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Indonesia geothermal capacity to add 215 MW this year

JAKARTA ( – Indonesia’s geothermal capacity will add 215 MW to the national power capacity this year from four geothermal power plant projects, raising the country’s geothermal power capacity to 2,020.5 M  from 1,808.5 MW at the end of last year.

The four geothermal power plants are as follows:

  • PLTP Sarulla Unit 3 with capacity of 110 MW
  • PLTP Karaha Unit 1 with capacity of 30 MW
  • PLTP Sorik Marapi Modular with capacity of 20 MW,
  • PLTP Lumut Balai Unit 1 with capacity of 55 MW.

Director for Geothermal at the Directorate General for New, Renewable and Energy Conservation at the Energy Ministry Ida Nuryatin Finahari, said that the government targets to add 250 MW from geothermal power plant in 2018.

PLTP Karaha is expected to begin oprating by the end of February and PLTP Sarulla Unit 3 in May this year.
Project Highlights
PLTP Sarulla 
– PLTP Sarulla Unit I (110 MW) began operating on March 18, 2017.
– PLTP Sarulla Unit II (110 MW) began operating in October 2017
– PLTP Sarulla Unit III Capacity: 110 MW
– Total Capacity Unit I, II, III: 330 MW
– Operator : Inpex Geothermal Sarulla Limited
– Total target capacity : 1000 MWUS$1.6 billion
– Shareholders: Kyushu Electric Power Co., Ltd 25%, Itochu Corporation 25%, Inpex 18.25%,  PT Medco Power Indonesia 18.99%, Ormat Technologies, Inc 12.75%
PLTP Karaha Bodas
PLTP Karaha Bodas is developed by Pertamina Geothermal Energy (PGE). The power plant is expected to be officiated by President Joko Widodo on Feb. 28, 2018. PGE has invested Rp2.5 trillion to develop the power plant. The operation of PLTP Karaha Unit I will raise the capacity of geothermal power plants owned by PGE to 617 MW.

PGE currently operates PLTP Kamojang in West Java (235 MW), Lahendong in North Sulawesi 120 MW, Ulubelu, Lampung 220 MW and Sibayak in North Sumatera 12 MW.
PLTP Sorik Merapi
PLTP Sorik Merapi is developed by KS ORKA. The company first stepped into Indonesia’s geothermal industry in 2016 by acquiring the 240MW Sorik Marapi geothermal power plant project in Mandailing Natal, North Sumatera.

By early 2017, KS Orka acquired the second project, 30MW Sokoria geothermal power plant project, in Ende, East Nusa Tenggara. The project was stalled for years but since KS Orka took over, the construction and preparation for exploration drilling have been ongoing on site. With a large untapped geothermal resources in Indonesia, the company is confident to invest in Indonesia for the development of the resources.

PLTP Lumut Balai
PLTP Lumut Balai is owned and developed by Pertamina Geothermal Energy (PGE). The power plant comprises of two units. Lumut Balai Project of Unit 1 and 2 with total capacity of 2×55 MW located at WKP of Lumut Balai and Margabayur, South Sumatera Province.

The Unit 2 is at the stage of infrastructure and drilling preparation. The Unit I has been delayed from initial plan of 2016 and Unit II in 2018. PLTP Lumut Balai Unit 3 and 4 with planned capacity of 55 MW are still in development process. Both units are planned to be commercially operable in 2022. (*)

Written by Roffie Kurniawan (email:


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