SGB-SMIT Group
Regensburg-based independent maker of power and distribution transformers from 30 kVA to 1,200 MVA up to 765 kV, with plants across Europe, Asia and the US, where it owns Southwest Electric.
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; distribution; cast resin; VPI; dry-type; solar/wind (renewable) 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.
- 1,200 1
- Smallest rating kVA Smallest published rating, in kVA. Shows how far down the distribution range a maker goes.
- 30 1
- Product range The kVA/MVA range as the maker states it, by product line.
- 30 kVA to 1,200 MVA; oil distribution transformers 50-2,500 kVA; cast resin and VPI dry-type 1
- Highest voltage kV Highest voltage class the maker publishes or has delivered, in kV (AC system voltage; HVDC noted under Voltage classes).
- 765 1
- Voltage classes Voltage classes and BIL as the source states them, by product or plant.
- up to 765 kV 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.
- Regensburg, Germany; Nijmegen, Netherlands; Sibiu and Botoșani, Romania (ALFA production from July 2025); Tallmadge, Ohio, United States (SGB-USA dry-type production); Oklahoma City, United States (Southwest power division announced October 2025); Ripanj, Serbia (COMEL majority-stake agreement, closing not assumed) 1
- 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.
- Germany; Netherlands; Romania; United States 1
- 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 5
- 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 4
- Capacity expansion Announced transformer capacity expansions: amount in the original currency, place, announcement date, target date and output change. US and EU projects first.
- EUR20M SGB-ALFA factory in Botoșani, Romania: production began July 2025, formally inaugurated 1 July 2026. Agreement for majority stake in COMEL Transformatori, Ripanj, Serbia announced 13 July 2026. Southwest Electric power transformer manufacturing division announced October 2025 in Oklahoma City. 2
- 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.
- Not published
- Expansion region Where the announced capacity expansions are: US, EU, both, or only elsewhere (Other).
- US and EU 4
- 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 3
- Data center product or order The named data center line, or the disclosed order with value and date.
- Southwest Electric's Oklahoma City power transformer division targets data centers, utilities, oil and gas and renewables 3
- Parent or owner Parent company or owner where the source states one.
- Not published
- HQ country Country of the maker's headquarters.
- Germany 1
- HQ region Region of the maker's headquarters.
- Europe 1
- Legacy brands and names Sourced former names and acquired transformer businesses, retained on the current maker row to avoid duplicate supplier counts.
- Not published
Sources
- SGB-SMIT: Medium power transformers brochure accessed 2026-11-11
- SGB-SMIT: acquires majority stake in COMEL Transformatori accessed 2026-11-11
- Transformer Technology: Southwest Electric launches power transformer division in Oklahoma City accessed 2026-11-11
- SGB-SMIT: ALFA factory production date, inauguration and EUR20M investment accessed 2026-11-11
- SGB-USA: Tallmadge production facility and US manufacture accessed 2026-11-11
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