Siemens Energy
Munich-based energy technology group making power transformers to 1,300 MVA and 1,100 kV, HVDC converter transformers and GEAFOL cast-resin distribution units in transformer factories on four continents, and building its first US large power transformer plant in Charlotte, North Carolina.
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; HVDC; shunt reactor; series reactor; phase-shifting; mobile; distribution; cast resin (GEAFOL); data center; voltage regulators 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.
- 1,300 1
- Smallest rating kVA Smallest published rating, in kVA. Shows how far down the distribution range a maker goes.
- 10 1
- Product range The kVA/MVA range as the maker states it, by product line.
- Distribution 10 kVA to 10 MVA; medium power up to 250 MVA; large power up to 1,300 MVA; HVDC converter up to 750 MVA 1
- Highest voltage kV Highest voltage class the maker publishes or has delivered, in kV (AC system voltage; HVDC noted under Voltage classes).
- 1,100 2
- Voltage classes Voltage classes and BIL as the source states them, by product or plant.
- large power up to 1,100 kV; HVDC converter up to ±1,100 kV; medium power up to 300 kV; distribution 230 V to 33 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.
- Nuremberg, Germany; Dresden, Germany; Weiz, Austria; Linz, Austria; Zagreb, Croatia; Trento, Italy; Jundiai, Brazil; Tenjo, Colombia; Guanajuato, Mexico; Guangzhou, China; Wuhan, China; Jinan, China; Charlotte, North Carolina, United States (first LPT plant, production planned from 2026) 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.
- Germany; Austria; Croatia; Italy; Brazil; Colombia; Mexico; China 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.
- Not published
- 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 3
- Capacity expansion Announced transformer capacity expansions: amount in the original currency, place, announcement date, target date and output change. US and EU projects first.
- $150M LPT factory, Charlotte, North Carolina, announced 2024-02-14, first transformers planned early 2026, ~600 jobs; part of $1B US manufacturing plan announced 2026-02-03 that expands Charlotte LPT making and servicing; ~EUR220M Nuremberg, Germany factory expansion, announced 2025-09-05, ~50% more capacity by 2028 4
- 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.
- 150 4
- 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).
- ISO 9001 (all transformer plants) 3
- 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 1
- Data center product or order The named data center line, or the disclosed order with value and date.
- Distribution transformers marketed for data centers; data center industry solutions page 1
- Parent or owner Parent company or owner where the source states one.
- Not published
- HQ country Country of the maker's headquarters.
- Germany 6
- HQ region Region of the maker's headquarters.
- Europe 6
- 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
- Siemens Energy: Transformers accessed 2026-11-11
- Siemens Energy: Power transformers accessed 2026-11-11
- Siemens Energy: Power transformers brochure (30 to over 1,300 MVA) accessed 2026-11-11
- Siemens Energy: $150M new US power transformer factory (14 Feb 2024) accessed 2026-11-11
- Siemens Energy: $1 billion US investment (3 Feb 2026) accessed 2026-11-11
- Siemens Energy: EUR220 million for Nuremberg transformer factory (5 Sep 2025) accessed 2026-11-11
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