Hitachi Energy
Swiss-headquartered grid equipment maker that builds power, HVDC, distribution and dry-type transformers in factories across the Americas, Europe and Asia, with a $1 billion-plus US expansion led by a new large power transformer plant in South Boston, Virginia. Includes the former Kuhlman Electric transformer business.
Facts
Source per value- Segment Power when the maker publishes power, GSU, HVDC, autotransformer or reactor products or a rating above 20 MVA; Distribution when it publishes distribution, pad-mount, pole-mount, network or dry-type products; both when it publishes each. Derived from Transformer types and Largest rating.
- Power and distribution 1
- Transformer types Product types the maker lists, separated by semicolons: power, GSU, autotransformer, HVDC, shunt reactor, substation, distribution, pad-mount, pole-mount, network, dry-type (cast resin, VPI), mobile, rectifier/industrial, renewable and data center lines.
- power; GSU; HVDC; substation; distribution; dry-type; data center; mobile; rectifier/industrial; traction; shell-type; compact power (CompactStar); digital (TXpert); reactors 1
- Largest rating MVA Largest verified published rating in the cited product or regional scope, in MVA. Product range identifies base, forced-cooling, phase-shifter throughput or group-history claims; these rating bases are not interchangeable. Planned future ranges are described separately.
- Not published
- Smallest rating kVA Smallest published rating, in kVA. Shows how far down the distribution range a maker goes.
- Not published
- Product range The kVA/MVA range as the maker states it, by product line.
- Power transformers incl. over twenty 800 kV UHVDC and 500+ 735-765 kV AC units delivered; liquid-filled and dry-type distribution and traction transformers (no kVA range published) 1
- Highest voltage kV Highest voltage class the maker publishes or has delivered, in kV (AC system voltage; HVDC noted under Voltage classes).
- 800 1
- Voltage classes Voltage classes and BIL as the source states them, by product or plant.
- up to 800 kV UHVDC; 735-765 kV AC 1
- Plants Transformer manufacturing locations, city and country. Planned plants carry their target date. Location lists identify verified sites and may not cover every factory in a global group.
- South Boston, Virginia, United States; Crystal Springs, Mississippi, United States; Jefferson City, Missouri, United States; Gallman, Mississippi, United States (planned 2029); Varennes, Canada; Bad Honnef, Germany; Vaasa, Finland (new factory planned 2027); Lodz, Poland; Dosquebradas, Colombia; Chongqing, China; Hanoi, Vietnam 3
- Plant countries Countries with verified operating transformer manufacturing in the cited scope; not necessarily the complete global footprint. Component and service-only sites do not establish new-unit manufacturing.
- United States; Canada; Germany; Finland; Poland; Colombia; China; Vietnam 3
- US plant Yes when an operating US transformer plant is verified; No when the source shows the maker's plants and none is in the US. Empty means not verified.
- Yes 3
- EU plant Yes when an operating transformer plant in an EU-27 country is verified (the UK, Norway, Switzerland and Turkey do not count). Empty means not verified.
- Yes 5
- Capacity expansion Announced transformer capacity expansions: amount in the original currency, place, announcement date, target date and output change. US and EU projects first.
- $528M new factory, Gallman, Mississippi, announced 2026-09-15, production 2029 (takes over Crystal Springs output); $457M large power transformer factory, South Boston, Virginia, announced 2025-09-04 (largest US LPT site, 825+ jobs); $106M Alamo, Tennessee components expansion; ~$180M new factory, Vaasa, Finland, announced 2024-04; >$30M Bad Honnef, Germany expansion (2024-02) 3
- Largest US/EU expansion $M Largest single announced US or EU transformer capacity investment, in US$ millions, where the source states a dollar amount. Euro amounts stay in Capacity expansion unconverted.
- 528 3
- Expansion region Where the announced capacity expansions are: US, EU, both, or only elsewhere (Other).
- US and EU 3
- Certifications and standards Quality certifications, listings and design standards the source names (ISO 9001, IEEE C57, IEC 60076, EU Ecodesign Tier 2, utility approvals).
- Not published
- Data center offer Yes when the maker markets transformers for data centers or has disclosed a data center transformer order. Empty means not found.
- Yes 8
- Data center product or order The named data center line, or the disclosed order with value and date.
- Transformers for data centers: TrafoSTAR, TXpert digital, TVP, EconiQ, HiDry dry-type, substation transformers; two European-built LPTs flown to a US hyperscale data center project (reported 2026-06) 6
- Parent or owner Parent company or owner where the source states one.
- Hitachi, Ltd.; includes former ABB Power Grids and Kuhlman Electric transformer operations 9
- HQ country Country of the maker's headquarters.
- Switzerland 4
- HQ region Region of the maker's headquarters.
- Europe 4
- Legacy brands and names Sourced former names and acquired transformer businesses, retained on the current maker row to avoid duplicate supplier counts.
- Kuhlman Electric: founded in Elkhart, Indiana in 1894; opened the Crystal Springs, Mississippi power transformer factory in 1956; acquired by ABB in August 2008; retained here within Hitachi Energy’s transformer heritage. 9
Sources
- Hitachi Energy: Transformers accessed 2026-11-11
- Hitachi Energy: Power transformers accessed 2026-11-11
- Hitachi Energy: $528 million Mississippi transformer factory (15 Sep 2026) accessed 2026-11-11
- Hitachi: $1 billion US manufacturing investment (4 Sep 2025) accessed 2026-11-11
- Hitachi Energy: additional $1.5 billion for global transformer production (Apr 2024) accessed 2026-11-11
- Hitachi Energy: European-made transformers power AI infrastructure (Jun 2026) accessed 2026-11-11
- Hitachi Energy: CA$270M Varennes, Quebec LPT expansion (Sep 2025, search listing) accessed 2026-11-11
- Hitachi Energy: Transformers for data centers accessed 2026-11-11
- Hitachi Energy: Kuhlman heritage and Crystal Springs transformer operations accessed 2026-11-11
- Hitachi Energy: corporate profile accessed 2026-11-11
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