Category 02 · 59 supplier records
Compare transformer manufacturers, switchgear suppliers and electrical delivery specialists. Start with the equipment package you need, then check who manufactures, supplies, installs and commissions it.
Latest supplier evidence 2 October 2026
Choose the buying scope
Use these package boundaries to decide what belongs in your shortlist and what evidence to request.
Use the published product range to identify candidates for the grid or primary substation package.
Confirm MVA, voltage ratio, duty, impedance, losses, cooling, protection interfaces and the applicable test plan.
Compare dry-type, liquid-filled, padmount and packaged-substation scope against the downstream power design.
Request the exact configuration, installation environment, enclosure, service access and factory acceptance evidence.
Separate low- and medium-voltage equipment, protection, controls, bus systems and packaged electrical assemblies.
Define voltage, fault rating, protection coordination, maintainability and responsibility for the assembled system.
Equipment supply, refurbishment, hire, engineering and electrical contracting are different responsibilities from manufacturing.
Identify the original manufacturer, equipment condition, warranty owner, installation boundary and commissioning deliverables.
Published scope · Unclaimed records
These examples illustrate different published offerings; they are not a ranking or a complete shortlist. A company may cover several packages. Explore every category record below or use the directory filters.
Transformers & Switchgear covers transformers, protection, switchgear, power distribution and associated commissioning. The directory lists 59 supplier records in this category, including Omexom UK & ROI, Hitachi Energy, Wilson Power Solutions and Schneider Electric. Launch-market assignments are United States (40) and United Kingdom (19). Marketed coverage labels include United States, United Kingdom, United States & North America and UK-wide. Listed records map to the Site & Plan, Connect & Power, Design & Build, Fit Out & Commission, Operate & Maintain and Upgrade & Exit project stages.
Launch-market assignments help you discover suppliers. They do not establish a delivery territory, current capacity or project fit. Published coverage and specifications need confirmation for your project.
US launch-market comparison
| Supplier & comparison focus | Selected published scope | Coverage & evidence |
|---|---|---|
| Virginia TransformerUnclaimedPower transformer manufacturersRFQ questions |
| North America Record checked |
| MGM TransformersUnclaimedDistribution transformer manufacturersRFQ questions |
| United States & North America Record checked |
| Delta StarUnclaimedPower transformer manufacturersRFQ questions |
Power-transformer ratingPublishes power transformers up to 200 MVA and 345 kV.Published specification | United States & North America Record checked |
| Powell IndustriesUnclaimedSwitchgear manufacturers & suppliersRFQ questions |
| United States & global Record checked |
| QualusUnclaimedEquipment supply & electrical servicesRFQ questions |
| United States Record checked |
UK launch-market comparison
| Supplier & comparison focus | Selected published scope | Coverage & evidence |
|---|---|---|
| Wilson Power SolutionsUnclaimedPower transformer manufacturersRFQ questions |
Power-transformer rangePublishes power transformers rated from 5MVA to 300MVA and from 33kV up to 400kV.Published specification | UK-wide Record checked |
| Hitachi EnergyUnclaimedDistribution transformer manufacturersRFQ questions |
| UK & Ireland Record checked |
| AF SwitchgearUnclaimedSwitchgear manufacturers & suppliersRFQ questions |
| United Kingdom Record checked |
| Slaters ElectricalsUnclaimedEquipment supply & electrical servicesRFQ questions |
| United Kingdom Record checked |
| Omexom UK & ROIUnclaimedEquipment supply & electrical servicesRFQ questions |
| UK & Ireland Record checked |
From the directory records
Compare the same equipment duty and package boundary. Request a product-specific technical schedule, factory and site test plan, warranty responsibilities and dated delivery milestones. A published range is a starting point; confirm the proposed configuration directly.
No. The category includes equipment manufacturers, suppliers, refurbishment and hire businesses, engineering firms and installation or commissioning services. Review the published scope in each record and identify who manufactures the equipment and who takes responsibility for the installed package.
The directory currently lists 59 unclaimed supplier records in Transformers & Switchgear.
The directory lists 40 supplier records for Transformers & Switchgear with a United States launch-market assignment, including Virginia Transformer, MGM Transformers, Delta Star and HICO America. Coverage is supplier-published and should be confirmed directly.
The directory lists 19 supplier records for Transformers & Switchgear with a United Kingdom launch-market assignment, including Omexom UK & ROI, Hitachi Energy, Wilson Power Solutions and Schneider Electric. Coverage is supplier-published and should be confirmed directly.
Supplier discovery · Unclaimed records
Engineering and construction across electricity generation, transmission and distribution.
Grid technologies spanning transformers, switchgear, automation and power quality.
UK transformer manufacturer and service provider for power distribution projects.
Power distribution, critical power, controls and data-centre infrastructure systems.
Electrical distribution, UPS, power-quality and energy-management equipment.
US-owned manufacturer of power transformers for utility, industrial, commercial and data-centre applications.
Dry-type and liquid-filled transformer systems marketed for data-centre and critical-power applications.
North American power-transformer manufacturing and field support for utility and industrial infrastructure.
Power-transformer design, testing, installation and support from a United States operating base.
United States power-transformer manufacturer serving utilities, data centres, energy storage and industrial infrastructure.
Transformer products, components and lifecycle services for data-centre and electric-power infrastructure.
UK-manufactured power transformers with design, engineering, installation, commissioning and lifecycle services.
UK-headquartered medium-voltage switchgear, power-distribution automation and grid-monitoring products for resilient electricity networks.
United States supplier of liquid-filled and dry-type transformers, switchgear and inventory-planning support for data-centre projects.
United States manufacturer of data-centre power-control enclosures and medium-voltage switchgear, with facilities in California and Texas.
UK transformer and switchgear supply, hire, installation, commissioning, maintenance and turnkey power-distribution services.
Data-centre network infrastructure, connectivity, cabinets, cable management, busway, rack power distribution and remote-management systems for the United States market.
Engineered switchgear, power-distribution systems, packaged electrical solutions and lifecycle services for United States data-centre infrastructure.
United States-based high-voltage transmission, switchgear, power-distribution and lifecycle engineering for utility and industrial infrastructure.
Scottish-designed current and voltage transformers, protection equipment and sensors for data-centre power infrastructure.
United Kingdom design and manufacture of custom single-phase and three-phase transformers and associated power products.
United Kingdom grid connections and high-voltage electrical infrastructure for data centres and other commercial and industrial projects.
United States utility engineering, power-system studies, substation, switchyard, transmission and distribution design services.
United States power-infrastructure advisory, engineering, grid study, substation, commissioning and maintenance services.
United States transformer, switchgear, temporary-power, engineering, field-service, repair and power-equipment lifecycle provider.
British distribution, power and grid transformer design, manufacture, installation and servicing, plus switchgear installation.
United Kingdom low-loss transformers, voltage optimisation, battery storage, engineering, installation and maintenance.
United Kingdom new and refurbished transformers, switchgear, installation, project management and maintenance services.
United States and international power, distribution, dry-type and special transformers, substations and transformer service.
United Kingdom substation EPC, grid-stability and battery-storage infrastructure for utility, industrial and data-centre power.
United States oil-filled distribution transformers and transformer components for utility, public-power and commercial infrastructure.
United States remanufactured transformers, switchgear, regulators, testing and recovery services for utility, commercial and industrial power systems.
Data-centre electrical-power equipment including modular power pods, packaged substations, switchgear, PDUs, RPPs and integrated packages.
United Kingdom manufacturer of low-voltage switchgear, packaged substations and power-distribution units for data-centre and infrastructure projects.
United Kingdom designer, manufacturer and tester of low-voltage distribution systems with maintenance and emergency support for data-centre projects.
United States mission-critical electrical construction, power distribution, critical-power systems, commissioning and live-facility maintenance for data centres.
United States metal fabrication and assembly for data-centre enclosures, server racks and power-distribution housings.
United States critical-power and cooling equipment, engineering, commissioning, maintenance and lifecycle support for data centres.
United States mission-critical switchgear, grid automation, reclosers, sensors, system integration, commissioning and training.
United States data-centre distributed electrical-system design and medium-voltage switchgear for fault isolation, power rerouting and campus expansion.
United States medium-voltage metal-clad and metal-enclosed switchgear, monitoring integration, testing and custom engineering for data centres.
United States medium-voltage switchgear, dry-type transformers, power-quality systems, engineering and lifecycle support for data centres.
United States data-centre grid integration, substations, power distribution, electrical fit-out, testing and commissioning.
Nationwide United States data-centre electrical infrastructure, automation, testing, commissioning and lifecycle support.
United Kingdom LV switchgear, MCC, PDU, transfer-system, power-quality and monitoring solutions for data centres.
United Kingdom electrical-switchgear manufacture and customisation for data centres and other industrial power applications.
Data-centre grid connections, substations, transformers, onsite generation, battery storage, power-system design and lifecycle services.
Data-centre grid connections, substations, medium-voltage power stability, battery storage, controls and engineering delivery across the United States and Americas.
Electrical engineering, EPC, commissioning, testing and maintenance for medium- and high-voltage data-centre power infrastructure.
Data-centre power distribution, switching, monitoring, backup-power connection and load-testing systems.
Mission-critical civil, utility, transmission, substation, energy-storage and commissioning delivery across the United States.
Dry-type transformers, harmonic filters and power-quality systems for high-density United States data centres.
High-voltage grid-integration equipment, consulting, commissioning and lifecycle services for North American data-centre programmes.
United States dry-type and isolation transformers engineered for hyperscale, colocation and edge data-centre power systems.
Custom power transformers and end-to-end procurement, quality, logistics and maintenance support for data centres.
Electrical and electromechanical data-centre systems spanning substations, transformers, distribution, backup power, cooling and monitoring.
Data-centre and high-performance-computing electrical contracting for power distribution, UPS, switchgear and energy-plant upgrades.
United States electrical construction for medium-voltage distribution, switchgear, UPS, generators and data-centre facility upgrades.
Nationwide United States electrical contractor for data-centre planning, power distribution, installation, expansion, modernisation and facility support.