Renewable Energy in Indonesia: ESG Investment Hotspots for Foreign Investors

Indonesia holds over 3,686 gigawatts of total renewable energy potential, one of the largest untapped clean energy reserves in the world, yet has tapped less than 0.4% of that capacity. For ESG-mandated investors and green energy developers, this gap represents one of Southeast Asia’s most compelling long-term opportunities. The Indonesian government has formally committed to reaching net-zero emissions by 2060 under Law No. 59 of 2024 (the National Long Term Development Plan 2025-2045, or RPJPN), and its Electricity Supply Business Plan 2025-2034 (RUPTL) targets 42.6 GW of new renewable capacity from private sector participation over the next decade.

This article maps Indonesia’s key renewable energy hotspots by technology and geography, explains the incentive structure available to foreign investors, and outlines what it takes to enter the market legally and efficiently.

Why Indonesia Is an ESG Investment Priority Right Now

Three structural forces are aligning to make Indonesia’s renewable energy sector attractive to foreign capital in 2026 and beyond.

First, there is a massive demand signal. Indonesia’s installed power generation capacity reached 100.7 GW in 2024, according to PwC’s Power Guide 2025. Coal still accounts for more than 40% of the energy mix, while renewables sit at just 14.68%, well below the government’s original 23% target, now reset to 2030. To replace retiring coal capacity and meet rising industrial demand (including from a domestic data center market expected to grow from 1.44 GW in 2025 to 3.56 GW by 2030), Indonesia needs an annual increase in renewable capacity of approximately 9.6 GW. This cannot come from state investment alone.

Second, the policy framework has improved materially. Presidential Regulation No. 112 of 2022 restructured renewable energy procurement, opening two formal pathways for private investment: direct appointment and competitive bidding through PLN (Perusahaan Listrik Negara). The RUPTL 2025-2034, launched in May 2025, explicitly expects most of the 42.6 GW addition to come from Independent Power Producers (IPPs), with foreign capital as a primary source.

Third, Indonesia is now fully open to 100% foreign ownership in the renewable energy sector. Under the Positive Investment List (Presidential Regulation No. 10 of 2021), renewable energy is classified as fully open to foreign investment, no mandatory local partner is required. This represents a significant shift from the pre-2021 regulatory regime and removes one of the major barriers that historically deterred foreign green energy developers.

For a broader overview of Indonesia’s general FDI framework, InvestinAsia’s complete guide to foreign direct investment in Indonesia provides a useful starting point.

The Four Key Technology Hotspots

Indonesia’s renewable energy landscape is diverse, spanning solar, geothermal, wind, and hydropower. Each technology has a distinct geographic concentration, risk profile, and investor entry point. Here is how each stacks up for ESG-focused foreign investors.

Solar Power: The Largest Untapped Potential

Indonesia’s solar potential is estimated at approximately 3,295 GW, according to the Ministry of Energy and Mineral Resources (MEMR/ESDM). The country sits on the equator, giving it year-round high solar irradiance across most of its 17,000-island archipelago. Despite this, installed solar capacity remains below 1% of total potential, making it the most underleveraged major renewable resource in Southeast Asia.

The RUPTL 2025-2034 targets 13.4 GW of new solar capacity, the largest single technology tranche in the plan. Key project formats include utility-scale ground-mounted solar farms, rooftop solar under the net metering scheme, and floating solar installations like the landmark 192 MW Cirata floating solar project in West Java, which serves as a reference project for scale.

In June 2025, Indonesia and Singapore signed three memoranda of understanding covering the import of renewable electricity, including approvals for large-scale solar development in Sumatra with transmission via subsea cable. This signals that cross-border clean energy trade, with Indonesia as an exporter, is becoming a viable commercial model for utility-scale solar investors.

Additionally, in August 2025, the Prabowo administration announced plans to deploy 100 GW of solar power distributed across more than 80,000 villages through a cooperative network. While implementation details are still being resolved, the direction signals strong government intent for solar scale-up beyond utility-scale projects.

Also read; Top Sustainable Investment Opportunities in Indonesia by Sector

Geothermal Energy: Indonesia’s Competitive Advantage

Indonesia holds approximately 40% of the world’s geothermal reserves, with estimated potential of 24 GW spread across 312 identified fields, primarily along the Pacific Ring of Fire. As of 2024, installed geothermal capacity stands at only 2.6 GW, roughly 10% of total potential, making this the most structurally underutilized major renewable source in the country.

Geothermal is unique among renewables for its baseload reliability: it generates power 24 hours a day regardless of weather, making it a critical complement to intermittent solar and wind on an archipelago grid. This predictability makes it especially attractive to ESG investors seeking stable, long-term cash flows rather than spot-price-dependent returns.

The geographic concentration of geothermal resources creates distinct regional hotspots. Sumatra leads with 106 potential fields, followed by Sulawesi (89) and Java (73), according to a 2025 analysis published in ScienceDirect. Active development projects include Lahendong Phase 7 and 8 (2 x 20 MW) in North Sulawesi and Sarulla Phase 2 (50 MW) in North Sumatra, among 12 geothermal investment projects formally promoted at COP29 in Baku in 2024 with a combined investment requirement of USD 2.14 billion.

Pertamina Geothermal Energy (PGE), the leading state-owned geothermal operator, has also entered joint venture arrangements with international partners including Chevron New Energies and Mubadala Energy for the Kotamobagu site in Sulawesi (estimated 280 MW potential), signaling that co-investment structures alongside Indonesian SOEs are a viable and increasingly common entry model for foreign capital.

Wind Energy: An Emerging Frontier in Eastern Indonesia

Wind energy in Indonesia has historically lagged behind solar and geothermal, primarily because wind resources are less consistent across Java and Sumatra, where the bulk of power demand is concentrated. However, the eastern islands; South Sulawesi, Nusa Tenggara, and parts of Maluku and Papua, offer meaningfully higher and more consistent wind speeds that are drawing increasing investor attention.

The RUPTL 2025-2034 targets 7.2 GW of new wind capacity over the decade. Offshore wind development, particularly off the coast of South Sulawesi and Java, is still in early-stage regulatory development, with no separate permitting framework yet established. However, several pilot initiatives and site assessments are underway. For investors with offshore wind expertise, Indonesia presents a long-lead, high-potential opportunity that is earlier in its development cycle than geothermal or solar.

Hydropower and Run-of-River: Kalimantan and Sumatra

Hydropower currently represents the largest share of Indonesia’s installed renewable capacity. The RUPTL targets 10.5 GW of new hydro capacity, with significant planned development in North Kalimantan, where a large-scale dam is planned as part of a regional power interconnection strategy that could eventually link Indonesia to Malaysia via cross-border power trade.

For foreign investors, the key consideration with large hydropower is the high capital requirement, long development timeline, and sensitivity to environmental and social governance (ESG) frameworks around river ecosystem impact and resettlement. Smaller run-of-river hydropower projects, which avoid reservoir flooding, often present a more straightforward ESG risk profile while still qualifying for government procurement under RUPTL.

The ESG Incentive Stack: What Foreign Investors Can Access

Indonesia has built a layered set of fiscal and non-fiscal incentives specifically for renewable energy and green technology investors. Understanding the full incentive stack is important because some benefits are automatic while others require a formal application through the Online Single Submission (OSS) platform managed by BKPM (Kementerian Investasi).

Tax Holidays for Green Energy Projects

Foreign-owned companies investing in renewable power generation qualify for Corporate Income Tax (CIT) exemptions of up to 20 years under the tax holiday program. The duration is tiered by investment size: a 100% CIT exemption applies to investments above IDR 500 billion (approximately USD 33 million), while investments between IDR 100 billion and IDR 500 billion qualify for a 50% CIT reduction for five years, followed by a 25% reduction for an additional two years. Renewable energy is classified among Indonesia’s 18 “pioneer sectors,” giving it priority processing for incentive applications.

InvestinAsia’s detailed analysis of Indonesia’s tax incentives by sector covers eligibility criteria, application timelines, and how to structure your investment to maximize these benefits.

Carbon Credit Monetization via IDX Carbon

Indonesia launched its national carbon trading exchange, IDX Carbon, under the supervision of the Financial Services Authority (OJK). Renewable energy projects that reduce or offset verified carbon emissions can generate and trade Sertifikat Pengurangan Emisi GRK (SPE GRK), or carbon emission reduction certificates. This creates a secondary revenue stream for qualifying projects, particularly geothermal, solar, and waste-to-energy, on top of power purchase agreement income.

The legal foundation for Indonesia’s carbon pricing mechanism is Law No. 7 of 2021 on the Harmonization of Tax Regulations (UU HPP) and Presidential Regulation No. 98 of 2021 on the Implementation of Carbon Economic Value (NEK). For a deeper explanation of how the carbon pricing framework affects businesses, InvestinAsia’s guide on carbon tax in Indonesia covers the regulatory mechanics.

Green Bonds and Blended Finance via JETP

Indonesia has issued nearly USD 878 million in green sukuk and green bonds to date, supporting sustainable infrastructure and clean energy projects. These are primarily government-issued, but select corporates have also tapped the market.

More significantly for foreign investors, the Just Energy Transition Partnership (JETP) has mobilized USD 20 billion in international climate finance directed at Indonesia’s energy transition. JETP structures blended finance arrangements that combine concessional public funding with private capital, reducing the risk premium on renewable projects and improving the financing terms available to IPPs and foreign energy developers.

Special Economic Zones and IKN Nusantara

Renewable energy projects and eco-friendly infrastructure located within Special Economic Zones (KEK) or Indonesia’s new capital city, Nusantara (IKN), qualify for additional incentives beyond the standard tax holiday program. IKN-based investments benefit from up to 100% CIT exemption for 10 years, extended land use rights of up to 95 years, and simplified dual licensing. For investors looking to combine clean energy infrastructure with data center or industrial facilities, the IKN framework offers a compelling integrated investment proposition.

For a full comparison of Indonesia’s investment incentive programs versus regional peers, see InvestinAsia’s analysis of why Indonesia remains an attractive foreign investment destination.

ESG Disclosure Requirements for Foreign Investors

Foreign investors entering Indonesia’s renewable energy sector need to be aware of the country’s evolving ESG reporting obligations. Under OJK (Otoritas Jasa Keuangan) regulations, ESG disclosures are mandatory for publicly listed companies and financial institutions. The Indonesian Sustainability Standards Board, under the Institute of Indonesia Chartered Accountants (IAI), adopted both IFRS S1 and IFRS S2 sustainability disclosure standards effective July 1, 2025, through the Sustainability Disclosure Standards (SPK). These will apply to both public and private companies, though the precise scope for private entities is still being finalized.

For foreign renewable energy investors with international ESG mandates, Indonesia’s OJK Sustainable Finance Taxonomy (TKBI) provides sector-level guidance on what qualifies as green investment, directly relevant to whether your project can attract institutional ESG capital or access green bond financing. Many domestic banks still lack capacity to apply ESG-specific credit assessment models, so foreign investors often need to rely on international financial institutions or development finance institutions (DFIs) for project financing, at least at the early stages.

Read the complete guide of ESG Regulations in Indonesia.

How Foreign Investors Legally Enter the Renewable Energy Sector

Renewable energy is fully open to 100% foreign ownership under the Positive Investment List, as confirmed by Presidential Regulation No. 10 of 2021. In practice, this means a foreign investor can establish a wholly owned entity without requiring an Indonesian shareholder. The standard legal vehicle is a PT PMA (Perseroan Terbatas Penanaman Modal Asing), which is Indonesia’s foreign-owned limited liability company.

For most renewable energy projects, the operational structure involves a PT PMA acting as the IPP (Independent Power Producer), holding the geothermal permit, solar development concession, or wind energy license, and entering into a Power Purchase Agreement (PPA) with PT PLN or directly with an industrial off-taker under the Renewable Energy Certificate framework. The PT PMA structure also provides the legal basis for signing engineering, procurement and construction (EPC) contracts, leasing land under a HGB title, hiring both local and foreign employees (via KITAS work permits), and repatriating profits abroad.

Navigating the licensing process for an energy-sector PT PMA requires more than the standard OSS registration. Depending on the technology, additional sector-specific permits include a Geothermal Work Area permit (WKP) from MEMR for geothermal projects, a Water Resource Utilization Permit for hydro or floating solar, an Environmental Commitment Document or AMDAL (Environmental Impact Assessment) under Law No. 32 of 2009, and a Forestry Use Approval if the project site falls within a designated forestry area.

For investors who want to understand the mechanics of how a PT PMA is structured and registered, InvestinAsia’s guide on what a PT PMA is and the step-by-step PT PMA setup guide cover requirements, capital thresholds, and the OSS process in full.

Foreign renewable energy developers who want to test the market before committing full investment capital sometimes use a Representative Office (KPPA) for initial market research and stakeholder engagement, before converting to a full PT PMA once a site, off-taker, and project structure have been identified.

Getting the company structure right from the outset is critical in the energy sector, where mistakes in KBLI (business classification) selection or permit sequencing can cause project delays of 6 to 12 months. For foreign investors entering this sector, InvestinAsia’s PT PMA registration service covers the full incorporation process end-to-end, from notarial deed and BKPM registration to sector-specific energy licenses and ongoing compliance.

Key Risks Investors Should Assess Before Committing Capital

Indonesia’s renewable energy opportunity is real, but the market has structural challenges that experienced investors account for before committing capital. Being clear-eyed about these risks is part of responsible ESG due diligence.

Grid access and transmission remains the most operationally critical constraint. Indonesia’s archipelago geography means that the islands with the best renewable resources (Sumatra, Sulawesi, Kalimantan) are not always connected to the high-demand Java grid. A project that generates electricity cannot always deliver it to paying customers without significant transmission investment, which often falls outside the IPP’s scope and depends on PLN’s infrastructure development schedule.

Tariff and PPA bankability has historically been a source of risk. PLN’s history of renegotiating contracts and the complexity of tariff design in a regulated market have increased the risk premium embedded in financing costs. The RUPTL 2025-2034 structures are designed to address this, but investors should conduct careful legal due diligence on the specific terms of any PPA before committing.

Local content requirements (TKDN) add a layer of cost and timing complexity. Under MEMR Regulation No. 11 of 2024, local content requirements apply to electricity infrastructure development. A temporary relaxation to a 20% TKDN minimum was introduced in 2025 to unlock stalled projects seeking international grant funding from the World Bank and the Asian Development Bank, but the policy is subject to change, and investors should verify the current TKDN threshold applicable to their specific technology and project size.

Permitting complexity and inter-agency coordination between central and regional governments continues to delay project timelines in practice. Energy sector investors should build permit sequencing risk into their project schedules and engage experienced local advisory firms early in the project development cycle.

For a broader view of how Indonesia’s energy companies are structured and who the key market participants are, InvestinAsia’s overview of Indonesia’s top energy companies provides useful market context.

Frequently Asked Questions

Can a foreign company own 100% of a renewable energy company in Indonesia?

Yes. Under the Positive Investment List (Presidential Regulation No. 10 of 2021), renewable energy is fully open to 100% foreign ownership. A foreign investor can establish a wholly owned PT PMA without requiring an Indonesian co-investor. Some adjacent activities in the energy sector (such as certain distribution and transmission functions) may have different ownership rules, so KBLI code selection is important to verify before registration.

What is the RUPTL 2025-2034 and why does it matter for foreign investors?

The RUPTL (Rencana Usaha Penyediaan Tenaga Listrik) is Indonesia’s Electricity Supply Business Plan, which sets out PLN’s planned capacity additions over a 10-year rolling period. The 2025-2034 RUPTL targets 42.6 GW of new renewable capacity and explicitly expects most of this to come from private sector investment, particularly Independent Power Producers (IPPs). It is the primary document that defines procurement volumes, technology priorities, and regional deployment plans, making it the essential reference for any project developer or infrastructure investor in Indonesia’s power sector.

What is the minimum investment to establish a PT PMA in Indonesia’s renewable energy sector?

The minimum total investment plan for a PT PMA is IDR 10 billion (approximately USD 660,000), with at least IDR 2.5 billion in paid-up capital deposited into the company’s bank account once incorporation is approved. For renewable energy projects specifically, the actual project capital requirement is typically far higher than this threshold, but the PT PMA corporate structure has no upper investment limit and can be used for projects of any scale.

How does Indonesia’s carbon trading market work for renewable energy investors?

Indonesia’s carbon trading system operates through IDX Carbon, the national carbon exchange established under Presidential Regulation No. 98 of 2021. Renewable energy projects that generate verified emission reductions can earn Sertifikat Pengurangan Emisi GRK (SPE GRK), which are tradeable carbon credits. These credits represent a potential supplementary revenue stream for qualifying projects, and participation is open to both domestic and foreign-owned entities operating through a PT PMA structure. The system is supervised by OJK and is still maturing in terms of market liquidity and verification protocols.

What are the geographic hotspots for geothermal investment in Indonesia?

Geothermal resources are concentrated along the Pacific Ring of Fire, with Sumatra hosting the highest number of identified fields (106), followed by Sulawesi (89) and Java (73). Current active development is underway in North Sulawesi (Lahendong, Kotamobagu), North Sumatra (Sarulla), Lampung (Ulubelu), South Sumatra (Lumut Balai), and West Sumatra (Bonjol). The government promoted 12 specific geothermal investment projects at COP29 in 2024, totaling USD 2.14 billion in investment requirements, with several projects now included in the BAPPENAS Blue Book making them eligible for international concessional financing.

What is the Just Energy Transition Partnership (JETP) and how can foreign investors benefit?

The JETP is an international climate finance initiative that has mobilized USD 20 billion in funding specifically for Indonesia’s energy transition. It combines concessional public funding from participating governments and multilateral institutions with private capital, reducing the effective cost of financing for qualifying renewable energy projects. Foreign investors participating in JETP-aligned projects may benefit from improved PPA terms, blended financing structures that reduce equity risk, and faster access to grid interconnection support. The partnership is coordinated jointly by BAPPENAS and MEMR.

References

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