THAILANDSICThailand Standard Industrial Classification

TSIC Activity

42202

Construction of utility projects for electricity and telecommunications

ประกอบกิจการงานโครงสร้างพื้นฐานระบบเครือข่าย network เดินสายสัญญาณ

What this activity covers

Companies in this sector construct and install electricity and telecommunications infrastructure, including power plants and transmission lines.

  • Power Transmission — Installation of power transmission lines and cables
  • Telecommunications Lines — Installation of communication signal lines
  • Power Plant Construction — Construction of power plants and transformer stations
  • Utility Infrastructure — Construction of related buildings and infrastructure
  • Repair Services — Repair of power and communication lines
  • Telecommunications Towers — Construction of telecommunications transmission towers

What companies here also do

Seen in real company registrations under this code — beyond the official definition, so licensing may differ.

  • Renewable Energy Systems — Design and construction of renewable energy systems
  • Waste-to-Energy Projects — Construction of waste-to-energy power plants
  • Utility Pole Installation — Installation of utility poles and wiring systems

Foreign ownership

List 3: Restricted, FBL/BOI route availableinherited from 42

Construction, except construction of infrastructure providing basic public services in public utilities or transport that requires special apparatus, machinery, technology or expertise, and except other categories prescribed in ministerial regulations

The infrastructure carve-out is subject to a minimum foreign capital requirement, subject to capital thresholds, verify current figures.

FBA B.E. 2542, List 3 (10)Routes: Foreign Business Licence, BOI promotion, US Treaty of Amity

Auto-mapped, verify against the Act. These TSIC mappings are indicative, not legal advice; the schedules of the Foreign Business Act B.E. 2542 are the authority. See the full foreign ownership reference.

Industry at a glance

as of 23 ก.ค. 69

The whole registered industry under this activity, every registration year, from the DBD DataWarehouse.

1,331
active companies operate here
฿18.8Bregistered capital, combined
฿38.4B
Sector revenue · 2025
+11% since 2023
฿967.9M
Net profit · 2025
557 profitable
202320242025

net profitrevenue

Foreign investment

new registrations · 2026 YTD
9%of new registered capital is foreign-held
฿11.0M foreign฿107.4M Thai

Largely domestic, with some foreign investment.

2 of the 5 largest companies here are foreign-owned Thailand subsidiaries.

New in 2026

71+73.2%

registrations, YTD

Registered capital

฿18.8B+9.6%

since year-end

Largest by revenue

Latest filed-year revenue, not a multi-year total

  1. 1Thai Semcon Co., Ltd.฿3.4B
  2. 2CHC Engineering Co., Ltd.฿2.2B
  3. 3Demco Public Company Limited฿2.1B
  4. 4Energy China (Thailand) Co., Ltd.intl฿2.0B
  5. 5Fuji Electric (Thailand) Co., Ltd.intl฿1.7B

Largest by registered capital

  1. 1Nokia (Thailand) Co., Ltd.intlBangkok฿1.0B
  2. 2Ratchaburi-EEP Renewable Energy Co., Ltd.Bangkok฿1.0B
  3. 3Smart Green Energy Co., Ltd.Bangkok฿1.0B

Source: Department of Business Development DataWarehouse. Financial figures are combined totals of companies that filed statements; revenue and profit shown for the latest three reporting years.

Companies registered since 2022

Browse all

New DBD registrations under this activity since 2022, the period the registry snapshot covers, not the full historical register.

345
Registered
since 2022
325
Still active
20
Dissolved
฿1.0M
Median capital
of active

New registrations per year

2022peak 103 in 20222026

Largest active companies by registered capital

Source: Department of Business Development (DBD) new-registration records, 2022 to present. Counts cover companies first registered in that window, reflect the latest snapshot load, and may lag the live register.

Emerhub

Restricted activity? There is usually a route.

Emerhub structures foreign-owned companies around FBA restrictions: Foreign Business Licence applications, BOI promotion, and compliant shareholding structures. Talk through your case before you commit to one.

Talk to Emerhub Thailand