Leading Solar Energy Companies in Thailand | Key Players 2026

Leading Solar Energy Companies in Thailand 

The following is a data-backed list of the leading Solar Energy Companies in Thailand, compiled through 6Wresearch's proprietary research and validated by in-house industry analysts. Trina Solar, B.Grimm Power currently lead the competitive landscape, alongside several other established players shaping the Thailand Solar Energy Market.

List of Solar Energy Companies in Thailand:

1. Trina Solar Limited

Trina Solar is a global photovoltaic (PV) modules and smart solar energy solutions provider, maintaining extensive manufacturing facilities in Rayong, Thailand, and supplying utility-scale solar projects across Southeast Asia.

2. B.Grimm Power Public Company Limited

B.Grimm Power is a prominent energy producer in Thailand, operating an extensive portfolio of utility-scale solar, wind, and co-generation power plants across Thailand and the broader ASEAN region.

3. Canadian Solar Inc.

Canadian Solar is a leading global solar technology and renewable energy company, operating solar cell and module manufacturing infrastructure in Thailand to serve regional utility, commercial, and residential markets.

4. SPCG Public Company Limited

SPCG is a pioneer in Thailand's solar energy sector, developing and operating numerous utility-scale solar farms, commercial rooftop solar installations, and energy storage systems across the country.

5. Energy Absolute Public Company Limited (EA)

Energy Absolute is a major Thai renewable energy conglomerate operating large-scale solar and wind farms, alongside expanding into advanced lithium-ion battery production and electric vehicle charging infrastructure.

6. BCPG Public Company Limited

BCPG is the renewable energy arm of Bangchak Corporation, generating clean electricity from solar, wind, hydro, and geothermal assets across Thailand, Japan, and Southeast Asia.

7. Thai Solar Energy Public Company Limited (TSE)

Thai Solar Energy is a regional clean energy developer operating solar PV power plants, solar thermal facilities, and biomass power plants across Thailand and Japan.

8. Banpu NEXT Co., Ltd.

Banpu NEXT is a smart energy solution provider in the Asia-Pacific region, offering utility-scale renewable power generation, corporate rooftop solar installations, battery storage, and smart city technology solutions.

9. GreenYellow (Thailand)

GreenYellow is an international energy transition partner providing decentralized solar power generation (Solar PPA) and energy efficiency solutions for commercial and industrial clients across Thailand.

10. Prime Road Power Public Company Limited (PRIME)

Prime Road Power is a Thai renewable energy company focused on developing, engineering, and operating solar power plants and clean energy assets in Thailand, Japan, Taiwan, and Cambodia.

11. Impact Solar Limited

Impact Solar (a subsidiary of Impact Electrons Siam) is a rooftop and private-PPA solar developer in Thailand, delivering customized distributed solar, floating solar, and microgrid solutions to C&I clients.

12. Blue Solar Co., Ltd.

Blue Solar is a Thai solar energy project developer and EPC service provider, specializing in utility-scale solar farms, rooftop solar systems, and grid-scale hybrid solar-plus-storage energy projects.

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