Indonesia Solar Energy - Market Share Analysis, Industry Trends & Statistics, Growth Forecasts (2026 - 2031)

According to Mordor Intelligence, the Indonesia solar energy market size is expected to grow from 2.15 gigawatt in 2025 to 2.97 gigawatt in 2026 and is forecast to reach 14.91 gigawatt by 2031 at 38.10% CAGR over 2026-2031.

This report is Segmented by Technology (Solar Photovoltaic and Concentrated Solar Power), Grid Type (On-Grid and Off-Grid), and End-User (Utility-Scale, Commercial and Industrial, and Residential). The Market Sizes and Forecasts are Provided in Terms of Installed Capacity (GW).

Indonesia Solar Energy Market Trends and Insights

Government Rooftop Incentives Accelerate Distributed Adoption

MEMR Regulation 2/2024 ended net-metering and replaced it with a 5.746 GW quota, clarifying interconnection rules and protecting PLN revenues while sustaining tax allowances for commercial systems. Jakarta's Governor Regulation 38/2024 now obliges the installation of rooftop solar on new commercial buildings exceeding 500 m2, a mandate mirrored in West Java and Bali. Together with the quota, this delivers a transparent pipeline that boosts developer visibility until 2028. The mechanism caps excess-generation credits, steering households toward self-consumption yet unlocking larger corporate installations that can absorb daytime output. Developers have accelerated engineering timelines to secure quota allocations early, anticipating tighter windows once the residential segment restarts in 2027. At the same time, municipal fines and permitting incentives ensure higher compliance, thereby expanding the Indonesian solar energy market in densely populated urban districts.

Module ASP Declines Compress Levelized Costs Below Grid Parity

Polysilicon spot prices declined from USD 30/kg in 2023 to USD 8/kg by Q4 2024, halving crystalline-silicon module ASPs and enabling EPC bids as low as IDR 1,050 per kWh in recent PLN tenders. Normalized freight rates shaved another 15-20% off landed costs for Chinese Tier-1 modules, pushing levelized electricity costs beneath coal benchmarks in East Nusa Tenggara and South Kalimantan. Developers responded by lodging unsolicited PPA proposals that already exceed PLN's 17.1 GW solar allocation for 2025-2034. Yet margin pressure remains as manufacturers offload high-priced inventory, compelling Indonesian firms to hedge order timing. Forward curves indicate that if Chinese factory utilization stays above 600 GW annually, the Indonesian solar energy market will benefit from sub-USD 0.07 kWh tariffs through 2026.

TKDN Local-Content Mandate Elevates Project Economics

MEMR Decree 191/2024 trimmed the TKDN threshold to 20%, yet developers still face 12-18% higher EPC costs because Indonesia lacks polysilicon and wafer plants, leaving PT Len Industri's 600 MW line as the chief compliant source. Queue times stretch to nine months, compelling utility-scale sponsors to renegotiate PPA schedules or accept partial-import penalties. PLN remains reluctant to uplift tariffs, forcing margin compression that cascades through the supply chain. Several IPPs now bundle balance-of-system gear from domestic suppliers to surpass the 20% threshold, although audits can delay commercial-operation certificates by up to 90 days. Unless new gigawatt-scale factories reach commercial operation before 2027, the TKDN rule will continue to hinder the Indonesian solar energy market.

Other drivers and restraints analyzed in the detailed report include:

1. RE100 Corporate Commitments Drive C&I PPA Volume
2. Diesel Displacement in Eastern Archipelago Eases Fiscal Strain
3. Grid-Absorption Constraints Trigger Curtailment Incidents

For complete list of drivers and restraints, kindly check the Table Of Contents.

Segment Analysis

Solar PV accounted for 100.00% of the Indonesian solar energy market size in 2025 and is forecast to advance at a 38.10% CAGR through 2031. CSP remains commercially unviable because most Indonesian sites record 1,400-1,600 kWh/m2 DNI, which is well below the 2,000 kWh/m2 threshold that CSP needs to remain competitive. PV capex of USD 800-1,200 kW undercuts CSP's USD 4,000-6,000 kW, so investors concentrate capital on crystalline-silicon routes. Bifacial and TOPCon modules captured 60% of 2024 imports as developers chase 10-15% yield gains in land-constrained Java. Compliance with IEC 61215 and IEC 61730 standards upholds bankability despite price compression, further reinforcing PV's exclusive status in the Indonesian solar energy market.

Second-generation cell technologies accelerate yield improvements, mitigating curtailment risks by enabling lower nameplate sizing for fixed quotas. LONGi and Trina each delivered over 500 MW of bifacial shipments in 2024, primarily for floating PV and hybrid diesel sites. As module energy density rises, developers forecast a 7% drop in land requirements by 2027, alleviating community-acceptance barriers in peri-urban Java while bolstering project IRRs.

Complete Report Scope:

• By Technology
  • Solar Photovoltaic (PV)
  • Concentrated Solar Power (CSP)
• By Grid Type
  • On-Grid
  • Off-Grid
• By End-User
  • Utility-Scale
  • Commercial and Industrial (C&I)
  • Residential
• By Component (Qualitative Analysis)
  • Solar Modules/Panels
  • Inverters (String, Central, Micro)
  • Mounting and Tracking Systems
  • Balance-of-System and Electricals
  • Energy Storage and Hybrid Integration

List of Companies Covered in this Report:

1. PT Surya Utama Nuansa (SUN Energy)
2. PT TotalEnergies Eren Indonesia
3. PT Sumber Energi Sukses Makmur (SES)
4. PT Sumber Energi Surya Nusantara (SESNA)
5. PT Solardex Energy Indonesia
6. Canadian Solar Inc.
7. Trina Solar Co. Ltd.
8. LONGi Green Energy Technology Co. Ltd.
9. First Solar Inc.
10. JA Solar Technology Co. Ltd.
11. Risen Energy Co. Ltd.
12. PT Len Industri (Persero)
13. PT PLN Nusantara Power
14. Akuo Energy Indonesia
15. ACWA Power Indonesia
16. Vena Energy Indonesia
17. Masdar Indonesia
18. PT Xurya Daya Indonesia
19. Enernet Global Indonesia

Additional Benefits:

• The market estimate (ME) sheet in Excel format
• 3 months of analyst support