Impact Electrons Siam

What Impact Electrons Siam does

Impact Electrons Siam Co., Ltd. (IES) is a Bangkok-headquartered, privately held renewable energy developer founded in 2011 that originates, develops, finances, and operates utility-scale wind and solar generation assets across the Asia-Pacific region. Its flagship asset is the 600 MW Monsoon Wind Power Project in southern Laos — Asia's first cross-border wind farm — which began commercial operation on August 22, 2025 and delivers electricity to Vietnam Electricity (EVN) under a 25-year PPA at US$0.0695/kWh. The portfolio also includes distributed rooftop and parking solar through the Mitsubishi Corporation co-owned Impact Solar Group (ISG, 50%+ MW operating), residential solar through Impact Solar Home (ISH), a 95 MWDC utility solar development in Hong Kong through Impact Energy Development (IED), and legacy operational solar plants in Japan (Osakikamijima and Mukawa-Cho). Cumulative implemented capacity exceeds 1 GW with a development pipeline of up to 10 GW.

IES's core technical competency lies in project origination and structuring rather than hardware manufacturing: it holds exclusive development rights from the Government of Lao PDR for wind in Sekong and Attapeu provinces, deploys Envision Energy turbines and PowerChina-led EPC execution, and is co-developing an AI-powered 'Future Energy System' with Envision Group and Keppel Infrastructure that integrates wind, solar, storage, and digital-twin coordination for cross-border ASEAN power trade. Revenue is generated through long-term fixed-price PPAs with state-owned utilities (subscription/recurring model) and through distributed solar Private PPAs with commercial, industrial, and residential customers in Thailand. Capital structure relies on multilateral development bank syndicates (ADB, AIIB, JICA, EXIM Thailand) alongside Thai and Japanese commercial banks and equity from Mitsubishi/DGA, BCPG, and ACEN.

Name

Impact Electrons Siam

Legal name

Impact Electrons Siam Co., Ltd.

Website

https://impactelectrons.com

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

51–100 employees

Short description

Impact Electrons Siam is a Bangkok-based renewable energy developer that originates, finances, and operates utility-scale wind and solar projects across Asia-Pacific, with its flagship 600 MW cross-border Monsoon Wind Project supplying Vietnam under a 25-year PPA.

Ownership category

akta.pro rank

Product category

Renewable Energy Power Generation

NAICS

Solar Electric Power Generation (221114), Wind Electric Power Generation (221115), Electric Power Generation (22111), Power and Communication Line and Related Structures Construction (237130)

akta.pro primary industry

Renewable Energy Industrial Facilities Construction (Solar, Wind, Storage) (IMAFADAD)

akta.pro secondary industries

Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System) (EUAMABAB), Owner’s Engineering, Grid Interconnection & System Studies (PVsyst/Performance Modeling, Protection Studies) (EUACAGAG), Hybrid Renewable Systems & Co-Optimization R&D (Solar+Wind+Storage, Multi-Resource Plants, Controls) (EUAMAOAI)

Keywords

• Utility-scale wind power
• Utility-scale solar power
• Cross-border renewable energy
• Distributed solar solutions
• Power purchase agreements

Headquarters

HQ city

Bangkok

HQ country

Thailand

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Technology or R&D, Infrastructure, Supply Chain, Personnel, Operations, Marketing or Sales

Revenue model

1. Long-term Power Purchase Agreements (PPAs): IES generates revenue through 25-year fixed-price PPAs with state utilities (e.g., Vietnam Electricity for Monsoon Wind at US$0.0695/kWh). This provides contracted, predictable cash flows over the project lifetime. Revenue is also supplemented by community benefit funds and carbon offset credits.
2. Distributed Solar PPA (via Impact Solar Group): ISG (IES-Mitsubishi joint venture) installs and operates rooftop and distributed solar systems for commercial and industrial customers under Private PPA arrangements. Customers receive electricity savings with zero upfront investment; ISG retains ownership and earns PPA revenue over the contract term. ISG's flagship Private PPA portfolio generates over 1.1B Baht in electricity savings for customers.
3. Residential Solar Rooftop (Impact Solar Home): ISH offers one-stop solar service packages for homes, apartments, and small-to-medium enterprises in Thailand. Revenue likely derives from PPA/revenue-sharing or equipment/installation sales models, targeting residential and SMB customers with clean energy adoption.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

Impact Electrons Siam is a renewable energy project developer that originates, finances, builds, and operates utility-scale wind and solar power plants across Asia-Pacific. Its flagship asset is the 600 MW Monsoon Wind Power Project in Laos (Asia's first cross-border wind farm, delivering electricity to Vietnam under a 25-year PPA), and it operates distributed solar platforms (Impact Solar Group for C&I, Impact Solar Home for residential) and solar assets in Japan and Hong Kong.

Product overview

Impact Electrons Siam (IES) operates as a multi-project renewable energy developer with a portfolio of distinct products and subsidiaries. The core flagship project is the Monsoon Wind Power Project (600 MW), Asia's first cross-border wind farm. The company also manages several solar initiatives through sub-brands: Impact Solar Group (ISG) for distributed energy solutions, Impact Solar Home for residential solar services, and Impact Energy Development (IED) for utility-scale projects. Additional project assets include solar power plants in Japan (Osakikamijima and Mukawa-Cho). The portfolio spans wind and solar generation with projects across Laos, Thailand, Japan, and Hong Kong, totaling over 1 GW of implemented renewable energy capacity.

Differentiator

Problem solved

Functional benefit

Brands

• Impact Solar Group (ISG): Solar energy solutions company providing rooftop, parking, and storage solutions across Thailand, founded by IES and Mitsubishi Corporation in 2015.
• Impact Solar Home (ISH)
• Impact Energy Development (IED)

Products and services

• Monsoon Wind Power Project A 600 MW utility-scale onshore wind farm in southern Laos, Asia's first cross-border renewable energy project, delivering clean electricity from Laos to Vietnam under a 25-year Power Purchase Agreement with EVN at US$0.0695/kWh. The project powers over one million households and avoids 1.3 million tonnes of CO2 annually.
• Impact Solar Group (ISG) A joint venture between IES and Mitsubishi Corporation focused on distributed and digital energy solutions across Asia Pacific, offering solar services from rooftop to parking to storage under Private PPA arrangements. ISG has over 93 MW in operation and has delivered over 1.1B Baht in electricity savings to commercial and industrial customers including Thai Union, Big C, Kerry Logistics, SB Design Square, and JAS Asset.
• Impact Solar Home (ISH) A one-stop solar service for homes, apartments and other residential buildings in Thailand, offering various packages using cutting-edge technology to help reduce electricity expenses while promoting clean energy usage. ISH targets residential customers and small-to-medium enterprises.
• Impact Energy Development (IED) A Hong Kong-based wholly owned subsidiary of IES developing a 95 MWDC solar power generation plant at Black Point, Tuen Mun in Hong Kong's New Territories, which will be Hong Kong's first large-scale renewable energy project.
• Osakikamijima Mega Solar Power Plant A solar power plant located on Osakikamijima Island, Hiroshima, Japan. IES's first foreign developer project in Japan closed under non-recourse project financing in 2013, achieving commercial operations in 2015.
• Mukawa-Cho Solar Power Plant A solar power plant in Mukawa Town, Hokkaido, Japan, utilizing 340,000m² of polycrystalline panels worth over JPY 9,300 million, achieving COD on August 1, 2018.

Quantifiable outcome

• 1.3 million tonnes of CO2 offset annually by the Monsoon Wind Project
• +6 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Five partnerships are on record, tiered core, major and minor.

• Envision EnergycoreTechnology or Integration · 4 June 2026Envision Energy is IES's technology partner for wind turbine supply (Envision supplied all 133 turbines for the Monsoon Wind Project) and is a strategic co-development partner for Southeast Asia's largest AI-powered Future Energy System integrating wind, solar, and energy storage in Laos. Envision provides AI-powered intelligent coordination technology for the Future Energy System.
• PowerChinamajorImplementation/ SI/ Consulting Partner · 22 August 2025PowerChina led the construction of the Monsoon Wind Power Project. PowerChina's role as the EPC (Engineering, Procurement, and Construction) contractor was critical to completing the project on a 27-month timeline, 4 months ahead of schedule.
• Electricité du Cambodge (EDC)minorStrategic or Co-development Partner · 22 August 2025Envision Energy announced an existing partnership with Electricité du Cambodge (EDC) for a 300 MWh Battery Energy Storage System project in Cambodia. While this is primarily Envision's announcement, it reflects the broader regional expansion of the IES-Envision partnership ecosystem into battery storage and Cambodia.
• Keppel Infrastructure Holdings Pte LtdcoreStrategic or Co-development Partner · 26 January 2022IES, Keppel Infrastructure (Singapore), and Envision Group signed an MOU to collaborate on development and supply of low-carbon electricity, storage, and intermittency management solutions across ASEAN. The partnership leverages IES's exclusive development rights in Laos, Keppel's infrastructure track record, and Envision's technology capabilities. It supports the Laos-Thailand-Malaysia-Singapore Power Integration Project (LTMS-PIP) and studies the potential for cross-border power trade from Laos to Singapore.
• Envision GroupcoreTechnology or Integration · 26 January 2022Envision Group (parent of Envision Energy) signed an MOU with IES and Keppel Infrastructure to develop AI-powered, digital twin-enabled renewable energy systems across ASEAN, leveraging state-of-the-art artificial intelligence, internet of things, and digital twin technologies to enhance performance, control, and reliability prediction.

Scale indicators11 records

Recent moves6 records

Expansion highlights8 records

Direct peers

• BCPG Public Company Limited: Listed Thai renewable energy developer holding a 45% stake in IES's Monsoon Wind project vehicle (IEAD). BCPG develops utility-scale wind, solar, and biomass across Thailand and ASEAN, sharing IES's project model, customer type (state utilities, C&I PPAs), and cross-border expansion thesis.
• ACEN Corporation: Ayala Corporation's listed renewable energy platform and an existing international shareholder in IES's Monsoon Wind Project. ACEN develops and operates utility-scale wind and solar across the Philippines and ASEAN, making it a directly comparable regional developer with overlapping geographies, offtake structures, and multilateral financing access.
• Gulf Energy Development Public Company: One of Thailand's largest private power producers, with growing utility-scale solar and wind exposure across Thailand, Vietnam, and Laos. Gulf is a direct Thai-market peer to IES in renewable IPP development with similar utility offtake structures.
• Energy Absolute Public Company: Thai renewable energy developer with significant wind, solar, and battery storage assets. Energy Absolute pursues a similar utility-scale renewables-plus-storage thesis in Thailand and ASEAN, overlapping with IES's product mix and long-term PPA approach.
• B.Grimm Power Public Company: Thai-listed power developer with a sizable renewable energy portfolio (solar, wind, hydro) across Thailand, Vietnam, Laos, and the Philippines. B.Grimm shares IES's Thailand/Laos/Vietnam operational footprint and mixed utility-scale + distributed renewable model.
• Keppel Infrastructure Holdings: Singapore-based infrastructure arm of Keppel Ltd. and an IES strategic partner (MOU on AI-powered Future Energy System and LTMS-PIP). Keppel Infrastructure operates renewable energy and energy storage assets across ASEAN, with overlapping focus on cross-border power trade from Laos to Singapore.

Emerging players

• CWP Global: Cross-border renewable energy developer focused on utility-scale wind and solar projects in Southeast Europe and emerging markets. CWP shares IES's project development DNA in wind-heavy geographies and multilateral-financed utility-scale renewables, though operating in different regions.

Broad incumbents

• Sembcorp Industries: Singapore-listed energy and urban development group with a sizeable renewables portfolio across ASEAN (including its 2022 acquisition of Windlab). Sembcorp is a broader incumbent that overlaps with IES in regional renewables development, offtake contracts with ASEAN utilities, and cross-border power initiatives.

Others

• Mitsubishi Corporation (Power & Energy Solutions): Japanese trading house and strategic shareholder in IES's Monsoon Wind Project (via Diamond Generating Asia) and co-founder of Impact Solar Group. Mitsubishi is both a partner and an adjacent ecosystem participant in ASEAN renewables, comparable to IES in cross-border project development experience rather than direct competition.
• Envision Energy: Chinese wind turbine OEM and digital energy platform that supplied all 133 turbines for IES's Monsoon Wind Project and is co-developing IES's AI-powered Future Energy System. Envision is a key technology and ecosystem partner with overlapping renewable project activity in ASEAN, rather than a direct competitor.

Market position

Strengths1 record

Weaknesses4 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/impactelectrons
• LinkedInlinkedin.com/company/impact-electrons-siam

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Impact Electrons Siam