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

The south korea solar energy market size in 2026 is estimated at 35.67 gigawatt, growing from 2025 value of 32.62 gigawatt with 2031 projections showing 55.77 gigawatt, growing at 9.35% 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).

South Korea Solar Energy Market Trends and Insights

Aggressive Renewable Portfolio Standard (RPS) targets to 2030

The revised Renewable Portfolio Standard raises the minimum renewable purchase obligation on generators above 500 MW from 12.5% in 2025 to 25% in 2026, creating an immediate and enforceable floor for solar demand. Utilities risk penalties higher than renewable procurement costs, so forward contracting for solar certificates has intensified. The South Korean solar energy market benefits because compliance demand is volume-based, not price-based, insulating planned projects from commodity-price volatility. The Eleventh Basic Plan further commits to 77.2 GW of solar by 2038, encouraging developers to accelerate build schedules to capture attractive renewable energy certificate pricing well before the target year. Provincial governments in Gyeonggi and Jeolla are already issuing competitive tenders aligned with the RPS trajectory, making these regions short-cycle growth hotspots.

Corporate RE100 demand from semiconductor & battery exporters

Export-oriented industries now link market access to renewable procurement, and Samsung Electronics alone consumes more power each year than the nation’s entire 2024 renewable output. Eight SK Group affiliates formalized RE100 pledges in 2025, signaling that renewable sourcing has become a condition for supply-chain participation rather than a CSR initiative. European original equipment manufacturers, notably BMW and Volvo, mandate RE100 compliance for parts suppliers, and the South Korean solar energy market responds with surging demand for Korea Renewable Energy Guarantees of Origin (K-REGOs). Direct power purchase agreements allow corporates to bypass the regulated tariff mechanism and secure on-site or near-site solar assets that satisfy global climate-auditing protocols, solidifying a premium segment of long-term offtake contracts.

“Solar-distancing” land regulations (300-1,000 m setbacks)

Local ordinances introduced in 2024 require setbacks of 300-1,000 m between solar projects and the nearest residence, eliminating 17,000 km² of potential sites and shrinking deployable land by 69.6%. The Ministry of Trade, Industry, and Energy found no adverse health or environmental impacts from PV arrays, yet 112 of 229 municipalities enforce the rules, often influenced by visual-impact concerns rather than science. Developers must complete extra environmental impact statements and negotiate local referenda, adding six to nine months to permitting timelines and raising soft costs. Constitutional appeals are pending, and an eventual legal resolution could unlock constrained capacity, but near-term schedules remain at risk.

Other drivers and restraints analyzed in the detailed report include:

• Declining LCOE of mono-PERC & TOPCon modules
• Commercialisation of perovskite-silicon tandem cells (local R&D edge)
• KEPCO tariff deficit limiting grid upgrades

Segment Analysis

Photovoltaic systems accounted for the entire South Korean solar energy market size in 2025 and are set to expand at a 9.55% CAGR to 2031. Concentrated Solar Power remains absent because direct-normal irradiance averages only 3.8 kWh/m²/day, well below the 5.5 kWh viability threshold. Mono-PERC modules held 38% of shipments in 2024, while TOPCon technology rose to 62% on 22.5% cell efficiency and strong bifacial response. Hanwha Q CELLS and OCI are piloting perovskite-silicon tandem product lines with commercial release targeted for 2027. Thin-film solutions hold under 1% share, hindered by lower efficiency and limited local supply chains.

Floating PV is the standout sub-segment. The Saemangeum project uses high-density polyethylene floats rated for 50-year storms and expects full 2.1 GW completion by 2026, enough to serve 1.2 million households. Reservoir-based output gains 8%-12% from module cooling, while bifacial designs capture 18% albedo uplift. Agrophotovoltaic towers mounted 3 m above crops produced 600 kWh per installed kW and retained 85% vegetable yield in Chungcheong trials, illustrating a dual-use path around restrictive land codes.

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:

• Hanwha Q cells (Hanwha Solutions)
• OCI Holdings
• LS Electric Co., Ltd.
• Hyundai Corporation
• S-Energy Co., Ltd.
• Hansol Technics Co., Ltd.
• Luxco Co., Ltd.
• SG Networks
• Super Solar Energy Co., Ltd.
• Topsun Co., Ltd.
• Korea Zinc
• Shinsegae Energy
• Korea Electric Power Corp. (KEPCO)
• SK E&S
• Doosan Enerbility
• Hyosung Heavy Industries
• LG Electronics (ESS division)
• Posco Energy
• ENGIE EPS Korea
• OCI Power

Additional Benefits:

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