Thailand renewable energy 2026: ERC tender rounds + Direct PPA framework
Thailand's cumulative renewable capacity reached approximately 16 GW by Q1 2026 across solar (10 GW), wind (1.5 GW), biomass (3 GW), small hydro + others (1.5 GW). ERC tender rounds 2024-2026 awarded 5+ GW of solar + wind. Direct PPA framework operationalising for corporate procurement. Net Zero by 2065 target.
In 50 words: Thailand's cumulative renewable capacity reached ~16 GW by Q1 2026 — solar 10 GW, wind 1.5 GW, biomass 3 GW. ERC tender rounds 2024-2026 awarded 5+ GW. Direct PPA framework operationalising for corporate procurement. Net Zero by 2065 target with intermediate 2030 + 2050 milestones.
Where Thailand stands
Cumulative installed renewable capacity Q1 2026:
- Utility-scale solar: 10 GW (largely floating + ground-mount)
- Onshore wind: 1.5 GW
- Biomass + biogas: 3 GW (significant share for ASEAN)
- Small hydro: 1 GW
- Other (waste-to-energy, etc.): 0.5 GW
- Total renewable: ~16 GW (excluding large hydro)
ERC tender rounds
Energy Regulatory Commission (ERC) competitive auctions accelerated 2024-2026:
- 2024-2025 awards: 5,200 MW solar + wind + biomass
- Bid tariffs: 1.65-2.30 baht/kWh (~$0.045-0.063/kWh equivalent)
- Lowest discovered: utility-scale solar at 1.65 baht/kWh
- 2026 expected new rounds: additional 3+ GW
Floating solar
Thailand pioneered floating solar at scale:
- 45 MW Sirindhorn Dam Hydro-Solar (operational 2021) — combines floating PV with existing hydro
- Multiple expansion projects
- EGAT (state utility) targeting 1+ GW floating PV
- Reservoir co-location model attractive globally
Direct PPA framework
Thailand operationalising Direct PPA (DPPA) framework for corporate renewable procurement:
- Pilot phase 2024-2025
- Full operational 2026
- Allows large industrial customers to contract directly with renewable IPPs
- Wheeling through EGAT/MEA/PEA transmission
Multinational manufacturers actively procuring:
- Auto industry (Toyota, Honda, Mitsubishi all with renewable commitments)
- Electronics (Western Digital, Seagate, Hitachi)
- Food + beverage (Coca-Cola Thailand, Nestle)
- Petrochemicals (PTT-related companies)
Carbon neutrality + net zero
Thailand's climate commitments:
- Carbon neutrality by 2050
- Net zero GHG by 2065
- Intermediate: 30% renewable in electricity by 2030, 50% by 2050
PDP 2024-2037 (Power Development Plan) updated with renewable expansion:
- Solar: 18 GW by 2037
- Wind: 5 GW by 2037
- Biomass: maintained
- Battery storage: emerging
Major developers
International:
- BCPG (Thai-headquartered, regional reach)
- B.Grimm Power
- Gulf Energy Development
- Banpu Power (transitioning from coal heritage)
- WHA Utilities
- Mitsubishi Power
- ENGIE Thailand
What developers should know
For renewable energy + EPC + storage developers:
- Active tender pipeline through 2026-2030
- Strong utility offtake (EGAT) creditworthy
- Foreign investment welcome
- Local content emerging but flexible
- Floating solar uniquely well-developed
- Corporate PPA opportunity scaling
What to watch next
ERC's next round of utility-scale tenders (expected H2 2026) will signal whether tariffs continue compressing. If solar lowest tariff drops below 1.50 baht/kWh, Thailand becomes a low-cost regional benchmark.
Researched and drafted with AI assistance; reviewed and edited by the named author within 24 hours of draft.