Geo Dipa signs EPC and ORC supply contracts for Dieng geothermal project, Indonesia
Signing ceremony at the 2025 Indonesia International Geothermal Convention and Exhibition (source: Rekayasa Engineering)
Carlo Cariaga
29 Sep 2025
PT Geo Dipa has signed the EPC contract for the Dieng Unit 2 geothermal power plant in Indonesia, as well as an MoU for the deployment of ORC technology.
During this year’s Indonesia International Geothermal Convention and Exhibition (IIGCE), state-owned geothermal developer and operator PT Geo Dipa Energi (Geo Dipa) signed two agreements related to the Dieng geothermal power project located in Central Java, Indonesia. The agreements are as follows:
- The signing of the Notification of Award for the engineering, procurement, and construction for the 55-MW Dieng Unit 2 geothermal power plant to a joint venture of PT Rekayasa Engineering (PTRE) and PT Timas Suplindo.
- The signing of a Memorandum of Understanding with National Energy Services Reunited Corp. (NESR) Indonesia for the deployment of Organic Rankine Cycle (ORC) technology to generate power from the waste heat of Dieng’s geothermal brine.
Geo Dipa is expanding installed capacities at both the Dieng and Patuha geothermal fields with financing support from the Asian Development Bank (ADB). Earlier this year, the company announced that the well testing phase for the planned expansion work has been completed, spanning a total of 18 wells. Commercial operations of both Dieng Unit 2 and Patuha Unit 2 are planned for 2027.
Geo Dipa had already earlier announced the award of the contracts for EPC and power plant supply for the Patuha Unit 2 expansion. Moreover, Geo Dipa had announced a collaborative study with Kopjasa Ahli Teknosa (KKT) to support geothermal development in the North Patuha region.
Source: Rekayasa Engineering, NESR via LinkedIn, and Petromindo
