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Indonesia is nearly fully electrified (99.4 %) but its grid still runs largely on coal. Hydropower — 7.1 GW installed against a 95 GW potential (RUKN 2025) — is the largest renewable pillar, and the RUPTL 2025-2034 plan adds 42.1 GW of renewables including 11.7 GW of hydro, much of it run-of-river and mini-hydro on remote islands.
| Electricity access (WDI) | 99.4 % (2023) |
| Installed capacity | ≈7.1 GW hydro installed (≈7 % of national fleet) |
| Hydropower potential | 95 GW total; 94.6 GW run-of-river (RUKN 2025) |
| Utility / grid operator | PLN (Perusahaan Listrik Negara) |
| Key fact | RUPTL 2025-2034: +42.1 GW renewables planned, incl. 11.7 GW hydro |
Data: World Bank World Development Indicators (EG.ELC.ACCS.ZS, 2023), CC BY 4.0 · IHA country profiles.
Geography drives the opportunity: Papua (22.4 GW hydro potential), Kalimantan (21.6 GW) and Sumatra (15.6 GW) cannot be served economically by grid extension alone. Community-scale and industrial mini-grids — hydro, with solar-diesel hybridisation — are the commercial template for these markets.
Local-content rules shape procurement: MEMR Decree 191/2024 requires 23-45 % local content for hydro plants depending on size. TC × HIER works with Indonesian partners, pairing imported core turbine technology with in-country fabrication and services to meet thresholds project by project.