The first geothermal low-temperature demonstration power plant in Indonesia has been successfully commissioned in the Lahendong geothermal field near Pangolombian, North Sulawesi. The demonstration plant is now in test-operation.
The concept of the demonstration power plant has been developed by the Helmholtz Centre Potsdam – GFZ German Research Centre for Geosciences in collaboration with the Indonesian project partners BPPT (Agency for the Assessment and Application of Technology) and PGE (Pertamina Geothermal Energy).
The Organic Rankine Cycle (ORC) demonstration plant is designed to cool down part of the unused geothermal brine from 170°C to 140°C and thus generate electricity. During the test-operation, the temperature of the geothermal fluid is 145°C, which results in an electric power output of approx. 300 kW. In normal operation, an electrical capacity of up to 500 kW shall be reached.
The research and demonstration operation of the low-temperature power plant is to be continued under the leadership of the GFZ until the middle of 2018. The demonstration plant will then be handed over to an Indonesian partner organization.
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