The Government of Indonesia’s cumulative installed solar capacity reached 1.49 GW by the end of 2025, after adding an estimated 546 MW during the year, as per the Ministry of Energy and Mineral Resources (MEMR). The milestone marks the first time the country has crossed the 1 GW threshold for solar power.
Rooftop solar, particularly in the commercial and industrial (C&I) segment, accounted for the bulk of new capacity in 2025. Market observers note that large electricity consumers are increasingly adopting rooftop systems to decarbonise operations, while utility-scale solar growth remains constrained by slow procurement processes at PLN and the removal of net metering incentives for residential rooftop systems.
MEMR also reported that renewables accounted for 15.75 per cent of Indonesia’s energy mix in 2025, up 1.1 percentage points year-on-year. Hydropower remains the dominant renewable source, followed by bioenergy and geothermal, with solar still contributing a smaller but rapidly growing share. However, the current renewable share remains below the revised national target range of 17–19 per cent, highlighting a gap between planning and project execution.