Transformer Vendors

Data center transformer manufacturers

24 makers sell transformers to data centers, 14 of them also have a verified US plant. Eaton builds the Envirotran HDC substation transformer from 300 to 12,000 kVA for data centers↗, LS Electric won about $132M of 345 kV units for a US hyperscale AI campus↗, and Sieyuan shipped 175 MVA, 138 kV units to a Texas data center↗.

24 makersChecked

Data center product or order
Virginia TransformerPower and distribution1,40015251E2D data center transformer; multiple data center contracts (Arizona, Ohio, Texas, South Carolina) for 2026-2027 delivery, announced 2025-01-15YesUnited States2026-11-11
Siemens EnergyPower and distribution1,30011,1002Distribution transformers marketed for data centers; data center industry solutions page—Germany2026-11-11
Sieyuan ElectricPower and distribution1,25017501175 MVA, 138 kV power transformers for a Texas data center (CST, 5-month lead time); 22 kV cast resin dry-type for a Thailand data center—China2026-11-11
TBEAPower and distribution1,23011,1002Data center solution: 10 kV amorphous alloy dry-type transformer and 110 kV step-down transformer—China2026-11-11
Prolec GE (GE Vernova)Power and distribution1,20018001Substation transformers for 'Utility & Data Center' applications; data centers listed as a served marketYesMexico2026-11-11
SGB-SMIT GroupPower and distribution1,20017651Southwest Electric's Oklahoma City power transformer division targets data centers, utilities, oil and gas and renewablesYesGermany2026-11-11
Pennsylvania Transformer TechnologyPower and distribution75017651Power and substation transformers for projects from utility substations to hyperscale data centersYesUnited States2026-11-11
JST Power EquipmentPower and distribution60045004Pad-mount, dry-type and power transformers plus MV switchgear and packaged unit substations for data centersYesUnited States2026-11-11
Wilson Power SolutionsPower and distribution50014001Two 60/90/120 MVA 132/33 kV continuous-emergency-rated power transformers for the Hemel Hempstead data centre—United Kingdom2026-11-11
WEGPower and distribution40015001Washington specialty transformer expansion targets data center, industrial manufacturing and grid applicationsYesBrazil2026-11-11
Howard IndustriesPower and distribution30053455Howard Power Solutions distribution and power transformers for data centersYesUnited States2026-11-11
Delta StarPower20023452Power transformers, unitized substations and mobile substations for data centersYesUnited States2026-11-11
Sanil ElectricPower and distribution7021702KRW 50.3 billion contract to supply transformers to Bloom Energy for US data centers, disclosed 2026-04-30—South Korea2026-11-11
Hammond Power SolutionsPower and distribution342462Medium-voltage dry-type transformers and PDU-integrated transformers for mission-critical data centers—Canada2026-11-11
Schneider ElectricDistribution201361Trihal included in Schneider Electric solutions for Switch Datacenters—France2026-11-11
EatonDistribution124464Envirotran HDC hardened data center substation transformers, 300-12,000 kVA base; FR3-filledYesIreland2026-11-11
MGM TransformersDistribution102—Dry-type and liquid-filled transformers for hyperscale to edge data centersYesUnited States2026-11-11
Giga EnergyDistribution5134.51Houston factory serves AI hyperscalers, GPU cloud providers and data center operatorsYesUnited States2026-11-11
Acme ElectricDistribution——Dry-type nonlinear isolation PDU transformers for data centers——2026-11-11
Federal PacificDistribution——PDU transformers and medium-voltage power equipment for data centers; Bloom Energy AI data center contract (switchgear), announced 2026-05-12YesUnited States2026-11-11
Hitachi EnergyPower and distribution—8001Transformers 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)YesSwitzerland2026-11-11
LS ElectricPower and distribution—5501345 kV transformers, KRW180B (~$132M) contract for an unnamed US tech company's hyperscale AI data center, announced 2026-10-01—South Korea2026-11-11
Maddox TransformerDistribution——Padmount, substation, dry-type and polemount transformers supplied to data center and renewable energy projectsYesUnited States2026-11-11
OrmazabalDistribution——MV transformers and distribution switchgear; more than 50 data center projects worldwide, 22 in Spain—Spain2026-11-11

What a data center campus buys

How we source

Substation, then pad-mounts, then dry-types

A large campus takes a transmission feed through one or more substation power transformers (often 138 or 345 kV primary), then distributes at medium voltage to dozens of pad-mount units outside each hall, and dry-type or PDU transformers inside. Each step has a different maker list: power and distribution.

Named lines and disclosed orders

A row counts here when the maker markets a data center line or has disclosed a data center order. Virginia Transformer sells its E2D unit and has data center contracts in Arizona, Ohio, Texas and South Carolina↗; Sanil Electric supplies Bloom Energy’s US data center projects↗.