President Prabowo Subianto has compressed Indonesia’s 100 GW solar energy expansion timeline from five years to three, a move intended to reduce state budget reliance on diesel imports. The government has identified 28,000 hectares of land in Java for the project, supported by a $1.4 billion investment in a domestic manufacturing ecosystem to meet local content requirements.
The push to accelerate the 100 GW solar rollout comes as policymakers seek to mitigate grid vulnerabilities. According to state data, replacing inefficient diesel plants with solar and battery energy storage systems (BESS) could save the government approximately IDR 74 trillion, or $4.1 billion, annually.
Land Allocation and Strategic Infrastructure
As of 3 July 2026, the government has mapped out 28,000 hectares of land in Java to facilitate grid integration. Of this, 8,500 hectares are designated for land-based solar arrays, which are expected to generate 8.5 gigawatt-peak (GWp) alongside BESS networks.
To address the challenges of land scarcity and high acquisition costs, the government is targeting an additional 10,000 hectares of water surfaces on state-owned reservoirs. This floating solar initiative is projected to host up to 10 GWp of capacity. Data from the state-owned utility PLN highlights the economic necessity of this pivot; a rise in land costs from IDR 200,000 to IDR 600,000 per square meter can increase electricity tariffs by 1 cent per kWh, which threatens the bankability of these projects.
Did You Know? Indonesia’s installed solar capacity grew from 207.7 MW in 2021 to 1,494.1 MW in 2025, according to the 10-year electricity procurement plan (RUPTL 2025–2034).
Domestic Manufacturing and Economic Strategy
To prevent the 100 GW target from creating a dependency on imported Chinese components, the Ministry of Investment and Downstreaming has secured $1.4 billion in foreign direct investment (FDI). This funding is earmarked for a domestic solar manufacturing ecosystem with a target capacity of 50 GW.
This domestic supply chain will be used to enforce local content requirements (TKDN) during upcoming tenders. Joint ventures, such as Trina Mas Agra Indonesia in the Kendal Industrial Park, have already begun operations with an initial TKDN baseline of 41 percent. Publicly listed firms are also shifting their operations to align with this momentum. Dian Swastatika Sentosa, through its subsidiary Daya Mas Agra Sejahtera, is involved in solar panel fabrication, while Kencana Energi Lestari is scaling its pipeline with a target of more than 60 MW of additional solar capacity.
Regulatory Framework and Next Steps
The Ministry of Energy and Mineral Resources is currently finalizing a Presidential Regulation (Perpres) designed to remove bureaucratic barriers. The regulation aims to streamline land clearing across the Ministry of Agrarian Affairs and Spatial Planning/National Land Agency, the Ministry of Environment, and PLN.
Expert Insight: The success of this three-year timeline depends heavily on the government’s ability to standardize tender processes and provide clear off-taker agreements. By leveraging the Danantara sovereign wealth framework, the state may be able to provide the financial stability needed to attract international private developers despite the condensed schedule.
Frequently Asked Questions
Why is the government shifting toward floating solar power?
Floating solar is a strategy to bypass the high costs and logistical friction associated with land acquisition on land-scarce islands like Java, where rising land prices can negatively impact electricity tariffs.
How does the government plan to ensure local economic value from the solar push?
The Ministry of Investment and Downstreaming has secured $1.4 billion in FDI to build a domestic manufacturing ecosystem. This capacity will be used to enforce local content requirements (TKDN) during project tenders.
What is the primary driver for accelerating the 100 GW solar target?
The acceleration is driven by recent grid vulnerabilities and the goal of eliminating the state budget’s exposure to volatile diesel fuel imports, which could save the state roughly IDR 74 trillion annually.
How will the integration of the Danantara sovereign wealth framework affect the participation of international private developers in these upcoming energy tenders?
