CIOTech Outlook Team | Wednesday, 18 June 2025, 13:10 IST
Indonesia is accelerating its Indonesia Super Grid project, developing an inter-island electricity transmission network using High Voltage Direct Current (HVDC) technology to bolster its energy transition. The Ministry of Energy and Mineral Resources highlighted the need for collaboration with domestic and international partners to create an effective policy framework, secure green financing, and engage the public for the project’s success.
The Sumatra-Java Interconnection, a flagship initiative, is underway to deliver Sumatra’s renewable energy to Java’s high-demand regions, as stated by Muhadi, the ministry’s Coordinator for Electrical Transmission Planning. HVDC, utilizing overhead lines and undersea cables, is the preferred solution, enabling rapid smart grid integration and supporting Variable Renewable Energy (VRE) sources like solar and wind, crucial for Indonesia’s clean energy goals. Alongside HVDC, a 500 kV High Voltage Alternating Current (HVAC) network is being developed in Sumatra.
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The government in Kalimantan also plans to generate 13 Gigawatts (GW) of hydropower-based electricity in the Kayan and Mentarang rivers, but it will take a strong grid system to serve the smelter sector in Java and Sulawesi. Minister Bahlil Lahadalia said that over the next 10 years, the government would build 47,758 circuit kilometers (ckm) of transmission line much needed to bring renewable generation to PLN substations and distribution systems.
The Java-Madura-Bali region will see the largest expansion at 13,900 ckm, followed by Sumatra (11,200 ckm), Kalimantan (9,800 ckm), and Sulawesi (9,000 ckm). To strengthen eastern Indonesia’s power systems, an additional 3,900 ckm will be built in Maluku, Papua, and Nusa Tenggara, enhancing access to clean energy.
