- PT Pertamina Geothermal Energy (PGEO) has submitted the technical documents pertaining to the Lahendong Geothermal Power Plant Units 7 and 8.
- As part of the initiative to further develop the geothermal potential of North Sulawesi, PGEO also plans to conduct technical discussions with PT PLN on reservoir studies, production facility design, and electrical and commercial studies.
PT Pertamina Geothermal Energy (PGEO) has submitted the technical documents pertaining to the Lahendong Geothermal Power Plant Units 7 and 8 (2 x 20 MW) and Binary Unit (10 MW) to Indonesia’s power distribution company, PT PLN. These technical documents are critical for PT PLN in the evaluation process prior to signing Power Purchase Agreements (PPA).
The expansion projects in the Lahendong Geothermal Field, the only operational geothermal field in North Sulawesi, had previously also been included in the 2025-2029 Blue Book of the Ministry of National Development Planning (PPN / Bappenas). This means that this project, along with three other geothermal projects across Indonesia, will be made eligible to receive foreign funding support.
Installed power generation capacity has steadily increased through the years at the Lahendong Geothermal Field through small capacity additions. Today, Lahendong has an officially installed capacity of 120 MW across 6 units (6 x 20 MW). It is also the site of a 500-kW ORC pilot plant, as well as the geothermal-powered Lao-Lao Geopark.
As part of the initiative to further develop the geothermal potential of North Sulawesi, PGEO also plans to conduct technical discussions with PT PLN on reservoir studies, production facility design, and electrical and commercial studies. The tasks arising from such discussions will lay the foundation for the execution phase of the expansion work.
Edwil Suzandi, Director of Exploration and Development at PGEO, highlighted that the Lahendong geothermal facility now contributes around 30 per cent of the electricity supply in the North Sulawesi region and its surrounding areas. Through the capacity addition efforts, this figure is expected to increase to 35-40 per cent.
“We hope that the submission of this document will enable PLN to evaluate and purchase electricity from new and renewable energy plants, while also accelerating the next stages of development. Moving forward, PGE is committed to continuing to expand the benefits of geothermal energy so that more people can truly experience it,” said Edwil.