🇰🇷 Transformer Industry — South Korea

South Korea is home to some of the largest transformer and grid-equipment makers in the world (LS, HD Hyundai Electric, Hyosung). It operates a dense 60 Hz grid and its OEMs are major exporters, especially as US and global demand surges.

17manufacturers tracked

1grid operators

60 HzIsolated

1upcoming events

Grid & utilities

KEPCO / KPXIsland grid — no international ties765 kV ↗

Transformer manufacturers

41 maker records in the South Korea census — power, distribution and dry-type. All South Korea manufacturers →

Hyosung Heavy IndustriesChangwonPT,DT,DRY

HD Hyundai ElectricUlsanPT,DT,DRY

LS ElectricAnyangPT,DT,DRY

Iljin ElectricHwaseongPT,DT

Sanil ElectricAnsanPT,DT,DRY

New Korea ElectricGimhaePT,DT

IEN Hanchang (HC Transformer)Busan (Gijang)PT,DT

International Electric (IEC)EumseongPT,DT,DRY

Dongmi Electric Ind.GwangjuPT,DT,DRY

Samil TransformerEumseongDT,DRY

Sungjin General ElectricYonginDT,DRY

KP ElectricGimhaePT,DT,DRY

EL Power TechSouth KoreaPT,DT,DRY

LS Power Solution (KOC Electric)BusanPT,DT,DRY

+3 more on the country page.

Components & suppliers

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

Projects & intelligence

Brazil: WEG wins compensating-solution package for Vilhena 2 500/230 kV substation — 165 MVA transformer + 165 MVAr syncon
WEG firma contrato com a Guaporé Sul Transmissora (BTG Pactual) — full 'solução compensadora' for the Vilhena 2 substation under Lot 4 of ANEEL Auction 04/2025: a 165 MVAr synchronous compensator, a 1…
Korea's power trio keeps landing hyperscaler orders — HD Hyundai Electric ₩1.12tn Big Tech framework, LS Electric ~₩170bn AWS deal
한국 전력기기 3사의 미국 데이터센터 수주 행진 — Invest Chosun details HD Hyundai Electric's long-term Big Tech master agreement (distribution ₩553.9bn + power equipment ₩567.3bn, deliveries through 2028), Hyosung Heavy'…
Mexico (CFE) energises new 75 MVA transformer at Turbogás Los Cabos substation, Baja California Sur
La CFE energizó el 5 de julio de 2026 un transformador de 75 MVA en la subestación Central Turbogás Los Cabos (bahía nueva de 115 kV), como salida de una nueva unidad generadora — parte de la ampliaci…
HD Hyundai Electric signs ₩1.02tn (~$750m) long-term data-centre power-infrastructure deal with a global big-tech firm
HD현대일렉트릭, 글로벌 빅테크와 1조212억원 규모 데이터센터 전력 인프라 장기 공급계약 — contract runs 2 Jul 2026 to Jan 2029; ultra-high-voltage transformers ₩567.3bn plus distribution transformers ₩553.9bn. Korean EHV makers locking m…
Hyosung Heavy wins ₩310bn (~$225m) 5-year UHV transformer & reactor supply deal with Australia's AusNet
효성중공업, 호주 빅토리아주 송전망 운영사 AusNet과 5년 독점 공급계약 — 초고압 변압기·리액터, 약 3,100억원 규모 — its second big Australian win this year; Korean EHV makers extending beyond the US into Australia's transmission build.

Upcoming events

BIXPO 2026 (Gwangju) — KEPCO Power Technology Expo 4 Nov 2026 · Gwangju, South Korea

Technical context

765 kV / 345 / 154 / 66 kV transmission; 60 Hz
KEPCO (Korea Electric Power Corporation) grid and procurement standards
KS standards aligned with IEC
Large exporting OEM base in power and distribution transformers
Driven by domestic grid reliability plus strong export demand

Frequently asked

Which Korean manufacturers are global?

LS Electric, HD Hyundai Electric and Hyosung Heavy Industries are leading Korean power-equipment makers, and several are now expanding US capacity.

What voltage does South Korea use?

The KEPCO grid operates at 765 kV, 345 kV, 154 kV and 66 kV, at 60 Hz.

Why are Korean OEMs exporting so much?

Domestic technical strength plus the global transformer shortage make Korean builders a key source, with new plants planned overseas.