Business · Energy & Commodities · 14 hrs ago
Pertamina Geothermal Energy reports drilling five wells in Indonesia
Pertamina Geothermal Energy, an Indonesian geothermal company, says it drilled five wells across three operating areas during 2026.
The work included exploration wells, which seek new geothermal resources, and make-up wells, which help maintain steam supplies for operating power plants.
At Gunung Tiga, the company completed drilling exploration well GTG-B.1 on June 9.
At Lumut Balai, it completed well LMB 19-3 and began drilling LMB-19.4, which has a target depth of 2,500 metres and is part of plans for a 55-megawatt Unit 3.
The company also began drilling make-up well UBL-T.1 in Ulubelu and well TPS-P1.2 in Tompaso, which has a target depth of about 2,300 metres and potential capacity of about 8 megawatts.
The drilling is intended both to develop new geothermal capacity and to support reliable operation of existing assets.
The company provided no further timeline for the wells still being drilled.
Pertamina Geothermal Energy reported drilling five wells across three operating areas in Indonesia during 2026.
The work included exploration drilling and make-up wells, which help maintain steam supply for existing power plants.
The company said the drilling could uncover new geothermal capacity and support the reliability of operating assets.
The wells are in Gunung Tiga, Lumut Balai, Ulubelu and Lahendong.
- Who
- PT Pertamina Geothermal Energy Tbk (PGEO), an Indonesian geothermal company.
- What
- It reported drilling five wells, including exploration wells and make-up wells.
- When
- During 2026; the update was published on October 12, 2026.
- Where
- Three operating areas in Indonesia, including Gunung Tiga, Lumut Balai, Ulubelu and Lahendong.
- Why
- To explore geothermal potential, develop new capacity and maintain steam supply for operating power plants.
This story does not have two clearly opposing sides.
Drilling of exploration well GTG-B.1 at the Gunung Tiga project was completed.
Drilling of make-up well LMB 19-3 at Lumut Balai was completed.
Drilling began on Lumut Balai well LMB-19.4 and Ulubelu well UBL-T.1.
Drilling began on well TPS-P1.2 at Tompaso in the Lahendong area.
CNBC Indonesia published PGEO’s update on the five wells.
- Wells reported
- 5
- Operating areas
- 3
- LMB-19.4 target depth
- 2,500 metres
- Lumut Balai Unit 3 target capacity
- 55 MW
- TPS-P1.2 target depth
- About 2,300 metres
- TPS-P1.2 potential
- About 8 MW
What people are saying
Drilling is one concrete step by PGE in developing the use of geothermal energy, both to open up potential new capacity and to optimize assets that are already operating.
These two approaches are part of Reservoir & Drilling Management to optimize the use of geothermal resources sustainably.
Sources
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