Our Service
Overview
Powering Thailand’s Grid with Proven EPC Expertise
CHC Engineering Co., Ltd. is a trusted EPC contractor specializing in high-voltage transmission lines and substations. With over 35 years of experience, we deliver end-to-end infrastructure solutions that meet the highest safety and engineering standards.
We support Thailand’s growing energy demands through comprehensive services — from design and tower erection to conductor stringing, substation installation, and nationwide on-site construction. As long-term partners to EGAT and PEA, we take pride in strengthening the nation’s power network with precision and reliability.
Transmission Line Construction
Design & Erection of High-Voltage Lines We provide full EPC services for 115 / 230 / 500 kV transmission lines, from design to tower erection, using precision equipment and safe installation practices.
Distribution Line Construction
Regional Power Distribution Solutions. We build reliable
electrical distribution lines to
support provincial and urban grid development across Thailand.
Substation Construction
Turnkey High-Voltage Substations
Our team delivers substations built to EGAT and PEA standards — from civil works to equipment installation and testing.
Transmission System Dismantling
Safe Removal of Legacy Infrastructure
We handle dismantling of old transmission towers and components with safety, speed, and minimal disruption.
Conductor Installation & Stringing
Precision Overhead Conductor Works
Our specialists conduct conductor stringing and tensioning with the accuracy needed for high-performance line operation.
Nationwide On-Site Services
Skilled Field Teams Across Thailand
We deploy trained personnel, cranes, and specialized equipment to any region for seamless project execution on-site.
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.
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.
End-to-End EPC Services
Projects
Project for reference
01
115 kV TL
Buri Ram – Prakhon...
02
115 kV TL
Roi Et – Phayakkhaphum...
03
115 kV TL
Si Sa Ket –...
04
115 kV TL
Mukdahan 2 – That...
05
115 kV TL
Bo Win – Ban...
06
115 kV TL
Lan Krabu – Khamphaengphet,...
07
115 kV TL
Lan Krabu – Thai...
08
115 kV TL
Rayong 3 – Sattahip...
09
115 kV TL
Lang Suan – Ranong,...
10
115 kV
Tha Wung – Lop...
11
115 kV
Roi Et – Mahasarakham...
12
Sectionalizing 115kV
Tha Tako – Chaiyaphum...
13
Sectionalizing 115kV
Pak Chong-Sikhiu to Khao...
14
115 kV
Temporary Detour line Yasothon-Amnat...
15
115 kV
Nakhon Rachasima 1 –...
16
115 kV
Nakhonsawan and Nakhon Rachasima
...
17
115 kV
Transmission Line Phayakkhaphum Phisai...
18
115 kV
Transmission Line Surin 1...
19
230 kV TL
Chaiyaphum – Nakhon Ratchasima...
20
230 kV TL
Tha Tako – Tha...
21
230 kV TL
Houay Ho Switchyard –...
22
230 kV TL
Krabi – Thung Song,...
23
230 kV TL
Phitsanulok 2 – Nakhon...
24
230 kV TL
Ayutthaya 4 – Sihhiu...
25
230 kV TL
Ubon Ratchathani 3 –...
26
230 kV TL
Mae Moh 4 –...
27
230 kV TL
Phang Khon – Bung...
28
500 kV
Mae Moh 3 –...
29
500 kV TL
Pluak Daeng – Nong...
30
500 kV TL
Chom Bung – Bang...
31
500 kV
Luang Prabang Hydroelectric Power...
32
500 kV
Bang Saphan 2 –...
33
Thailand TRUE GIF Project
Thailand
...
34
Replacement of OHGW with
OPGW 293 km, Thailand
Thailand
...
35
Replacement of OHGW with
OPGW 549.5 km, Thailand
Thailand
...
36
Replacement of OHGW with
OPGW, 820 km, Thailand
Thailand
...
Technology
Tools We Use
Foundation Work
Erection Work
Erection Work
Stringing Work
Stringing Work
Stringing Tool for 500 kV
Four Bundle Conductor
Puller and Tensioner
Conductor Drums & Tensioner
Preparation
Hydraulic compressor
FAQ
Need Help? Start Here
We offer comprehensive EPC services for high-voltage transmission
and substation projects. Our core offerings include:
- Design, construction, and tower erection of 115 / 230 / 500 kV transmission lines
- Distribution line construction for regional power systems
- Turnkey substation construction and installation (per EGAT and PEA standards)
- Dismantling of existing transmission systems and infrastructure
- Conductor installation and stringing using precise tensioning methods
- Nationwide on-site construction services with mobile teams and specialized equipment
These services cover the full project lifecycle—from initial design to final commissioning.
CHC Engineering specializes in high-voltage systems of 115 kV, 230 kV, and 500 kV,
in line with national utility standards in Thailand.
Our long-standing partners include key national utilities such as the Electricity Generating Authority of Thailand (EGAT) and the Provincial Electricity Authority (PEA). We also collaborate with major utility companies, independent power producers (IPPs), and leading construction firms across Thailand. Our experience spans both public infrastructure and private-sector energy projects.
Yes, we provide on-site construction services across Thailand. Our skilled teams and mobile equipment are fully equipped to handle projects in all regions.
Absolutely. We safely dismantle outdated towers and components as part of system upgrades or replacements, ensuring minimal disruption to existing operations.
Yes, we deliver turnkey substation projects—from design and civil works to electrical installation and commissioning—aligned with EGAT and PEA specifications.
Safety and precision are core to our operations. We follow strict engineering standards, use advanced machinery, and implement robust safety protocols throughout every project phase.
We were established in 1990 and bring over 35 years of specialized experience in Thailand’s power infrastructure sector.
We utilize advanced tower erection systems, precision stringing equipment, and modern construction tools to ensure efficiency, safety, and reliability on all job sites.
Please visit our Contact page or reach out via phone or email. Our team will be happy to discuss your project requirements and provide a tailored solution.
Yes, CHC Engineering has regional experience beyond Thailand. We are currently executing a 500 kV transmission line project covering 185 kilometers in Laos. This cross-border project demonstrates our capability to deliver high-voltage infrastructure solutions to international standards.
