Isimu PV Expansion Power System Study and Battery Study

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  • Isimu PV Expansion Power System Study and Battery Study
  • Project Name Isimu PV Expansion Power System Study and Battery Study
  • Project Type Renewable Energy Study
  • Client PT Quantum Solar Gorontalo
  • Completion Date 04/11/2021


In Indonesia, QSG has successfully built and developed the 10 MW operated Isimu Solar Power Plant Photovoltaic (PLTS Isimu) since January 2020; located in Isimu region, Gorontalo Province, Indonesia. In the future, QSG planned to develop and built more renewable energy power plant by expanding the existing PV Plant for the same capacity and location as the previously built PLTS Isimu. By expanding the project, Isimu SPP PV expansion (PLTS Isimu Expansi) will be connected to Isimu Switchgear as well as Isimu SPP PV connection. Another issue is intermittency: one of the main challenges in PV farm operation. Its power fluctuation can disrupt the grid frequency, which has been proven to be a problematic case for a safe and reliable grid operation. To ensure a smooth operation of PLTS Isimu Expansion Project, the optimal BESS design need to be determined in order to make sure that the equipped BESS will be able perform its function as ramp rate control/ smoothing properly to help mitigate the intermittent nature of the PV Farm that depends on solar irradiation. This BESS utilization will also provide additional comfort for PLN as the system operator.


There are two main description of actual services provided by our staff of this study. The first is to determine the optimum connection voltage based on cost and technical point of view. And the second is to determine optimal BESS design in SPP PV Isimu Expansion that will be implemented with a ramp rate control/ smoothing function.