🇹🇭 Transformer Industry — Thailand

Thailand operates a 50 Hz grid under EGAT (generation/transmission) and the PEA/MEA distribution utilities, with a substantial local transformer industry (Ekarat, Tirathai, QTC, Thai Trafo) and steady demand from grid expansion, renewables and industrial parks.

13manufacturers tracked

1grid operators

50 HzNational + Laos ties

4upcoming events

Grid & utilities

EGATNational grid — major importer of Lao hydro; LTMS corridor500 kV ↗

Transformer manufacturers

21 maker records in the Thailand census — power, distribution and dry-type. All Thailand manufacturers →

TirathaiSamut PrakanPT,DT

QTC EnergyBangkok / Nakhon RatchasimaPT,DT

Ekarat EngineeringBangkok / Nakhon RatchasimaDT,DRY

Thai Maxwell ElectricSamut PrakanDT

Charoenchai TransformerRat Burana, BangkokDT,DRY

Thai Trafo ManufacturingBangkok / AyutthayaPT,DT

Daihen ElectricChachoengsaoPT,DT

Sahabhant ElectricBang Phli, Samut PrakanPT,DT

Thai Patanakit TransformerSamut PrakanDT

S.P. Electric Industry (Fulllite)BangkokDT

EstelBangkokDRY

Hitachi Energy ThailandSamut PrakanPT

ABB ThailandBang Pu, Samut PrakanDT,DRY

Components & suppliers

Transformer bushings On-load tap changers Cooling systems Insulation materials Conductors & core steel Oil & preservation Protection & monitoring Tank & mechanical

Projects & intelligence

Linxon signs three contracts to rehabilitate 400 kV BSP stations in Iraq
Iraq's Ministry of Electricity contracted Linxon for rehabilitation of three critical 400 kV bulk-supply-point stations — rehab scope means transformer overhaul, accessories and insulation demand rath…

Upcoming events

Powerex Asia & Electric Asia 2026 14 Oct 2026 · Bangkok, Thailand
ASEAN Sustainable Energy Week (ASEW) 2027 7 Jul 2027 · Bangkok, Thailand
CIGRE International Symposium Bangkok 2027 8 Nov 2027 · Bangkok, Thailand
ASEAN Sustainable Energy Week (ASEW) 2028 5 Jul 2028 · Bangkok, Thailand

Technical context

230 kV / 115 / 69 / 22 kV, 50 Hz
EGAT (transmission) and PEA/MEA (distribution) procurement
TIS standards aligned with IEC
A solid domestic transformer OEM base (Ekarat, Tirathai, QTC, Thai Trafo)
Rising renewable and industrial load growth

Frequently asked

What voltage does Thailand use?

The EGAT grid is 230 kV (and 115 kV/69 kV), with distribution at 22 kV and below, at 50 Hz.

Who buys transformers in Thailand?

EGAT (transmission), the PEA and MEA (distribution), and renewable and industrial developers.

Does Thailand manufacture transformers?

Yes — Thailand has a strong base including Ekarat Engineering, Tirathai, QTC Energy and Thai Trafo Manufacturing.