Powering Southeast Asia Through High-Voltage Infrastructure

With over 35 years of experience in high-voltage transmission and substation EPC, we deliver turnkey solutions with unmatched reliability.

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About Us

CHC Engineering Co., Ltd.

We a leading EPC contractor specializing in high-voltage power transmission and substation projects. With over 35 years of experience, the company provides comprehensive services including design, supply, construction, and maintenance for 115/230/500 kV transmission lines and substations.

Building the Backbone of Thailand’s Energy Future

EPC Turnkey Solutions

From design and engineering to procurement and construction — complete delivery of substation and transmission line projects.

High-Voltage Transmission

Specializing in 115/230/500 kV transmission lines, including overhead, distribution, and hybrid systems.

Substation Engineering

Full-scope substation design, installation, commissioning, and retrofitting — AIS/GIS up to 500 kV.

Operation & Maintenance (O&M)

Preventive and corrective maintenance for reliable long-term performance of power infrastructure.

Milestone

Key moments that define CHC Engineering’s growth
as a leading EPC provider in Thailand’s power sector.

1990 – Company Established

CHC Engineering Co., Ltd. is founded, specializing in high-voltage transmission solutions.

1996 – First Major Project with EGAT

Secured and completed our first transmission line project for the Electricity Generating Authority of Thailand.

2006 – National Expansion

Completed projects in all regions of Thailand; expanded workforce and equipment capacity.

2015 – 500 kV Line Capability Achieved

Began engineering and constructing 500 kV transmission lines — a major technical milestone.

2020 – 30 Years of Service

Celebrated 30 years of continuous operations, with a strong portfolio of substation and transmission projects.

2024 – 35+ Projects & First International Expansion

Reached over 35 successful EPC projects nationwide and launched our first cross-border project in Laos.

1990 – Company Established

CHC Engineering Co., Ltd. is founded, specializing in high-voltage transmission solutions.

1996 – First Major Project with EGAT

Secured and completed our first transmission line project for the Electricity Generating Authority of Thailand.

2006 – National Expansion

Completed projects in
all regions of Thailand; expanded workforce and equipment capacity.

2015 – 500 kV Line Capability Achieved

Began engineering and constructing 500 kV transmission lines — a major technical milestone.

2020 – 30 Years of Service

Celebrated 30 years of continuous operations, with a strong portfolio
of substation and transmission projects.

2024 – 35+ Projects & First International Expansion

Reached over 35 successful EPC projects nationwide and launched our first cross-border project in Laos.

Our Values

At CHC Engineering, our values are the foundation of every project.

They drive our commitment to excellence, safety, and long-term partnerships in building energy infrastructure across the region.

Integrity in Every Step

We operate transparently and ethically in every aspect of our work.

Engineering Excellence

We pursue the highest technical standards in design and execution.

Collaboration & Trust

We believe strong partnerships create long-term success.

Safety First

We prioritize safety for our people, partners, and the public.

Sustainable Progress

We build with responsibility, efficiency, and environmental awareness.

Collaboration & Trust

We believe strong partnerships create long-term success.

Integrity in Every Step

We operate transparently and ethically in every aspect of our work.

Engineering Excellence

We pursue the highest technical standards in design and execution.

Collaboration & Trust

We believe strong partnerships create long-term success.

Safety First

We prioritize safety for our people, partners, and the public.

Sustainable Progress

We build with responsibility, efficiency, and environmental awareness.

Trusted By The Industry Leaders

Our Services

Powering Progress Through Engineering

We provide end-to-end engineering solutions for high-voltage transmission systems, from design to commissioning. Our teams deliver safe, reliable, and scalable energy infrastructure across Thailand and Southeast Asia.

Nationwide On-site Construction Services

Deployment of skilled teams and equipment for field construction across Thailand.

Conductor Installation and Stringing

Precise stringing and tensioning of overhead conductors for optimal performance.

Dismantling of Existing Transmission Systems

Safe and efficient removal of outdated transmission structures and components.

Substation Construction and Installation

Turnkey construction of electrical substations according to EGAT and PEA standards.

Distribution Line Construction

Installation and development of regional electrical distribution systems.

Design, Construction, and Tower Erection of High Voltage Transmission Lines

Complete engineering and construction solutions, including safe and precise tower assembly using advanced...

Why choose Us

More Than Just a Service

With over 35 years of industry expertise, CHC Engineering is trusted for delivering reliable, high-quality energy infrastructure solutions across Thailand and Southeast Asia. Our end-to-end capabilities, technical precision, and safety-first approach make us the partner of choice for power transmission and substation projects.

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