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Hitachi Energy's power transformers

Power Transformers

Hitachi Energy's power transformers are key components in power networks. Their availability and longevity have a major impact on grid reliability and profitability. Hitachi Energy does not compromise on quality. We ensure that every one of our 20,000 delivered units has undergone rigorous full-acceptance testing. 

Hitachi Energy offers a complete range of power transformers and related components and parts. We have delivered more than 20,000 power transformers (over 2,600 GVA), including over twenty 800 kV UHVDC and over five hundred 735 - 765 kV AC units, to all major global markets. 

Our entire range is the result of our own research, development and manufacturing, which makes us unique in the industry. This has given us extensive experience in every relevant part of power transformer technology. Customers worldwide can securely rely on the quality and reliability of our products.

Why Hitachi Energy?

  • Pioneering technology – best short circuit record in the industry
  • Industry leading ‘Mean Time Between Failure Rate (MTBF)’
  • The complete customer service package (from quotation to energization)

Our Solutions

 EconiQ™ Transformers

EconiQ™ Transformers

Co-creating for a sustainable energy future

TXpert™ Enabled digital power transformer

Digitally enabled and part of the TXpert™ Ecosystem, Hitachi Energy's TXpert™ Enabled power transformer optimizes asset performance with an early warning to prevent failures, and the open, modular, scalable design provides a future-proof solution. Click to learn more.


A rupture resistant transformer solution

Transformers for floating applications

Transformers for floating applications

Floating substations and wind turbines are best, for deep waters. Hitachi Energy offers a full offshore wind transformer portfolio for floating applications.

DC Mitigator

Hitachi Energy introduces the DC Mitigator, an innovative and effective solution that efficiently suppress DC-currents and improve the grid's quality.

CompactStar™ Power Transformers

A premium, compact, and lightweight transformer designed to optimize Total Ownership Cost (TCO) for offshore platforms and urban substations.


At its core, TrafoStar is a comprehensive technology platform that harmonizes transformer design, manufacturing processes, and quality control measures across all Hitachi Energy power transformer factories worldwide. The rigorous 6-Sigma quality system fortifies this common design and manufacturing platform and consists of over 6000 documents covering material, technical, production, and quality parameters.

Our Offering

Customer Success Stories

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Find a channel partner

Hitachi Energy has a long heritage of strong, enduring and value-creating partnerships.


Hitachi Energy offers distribution and power transformers, Dry-type and EconiQ™ Transformers as well as services, for industrial and commercial applications.

Special application transformers

Hitachi Energy offers a wide portfolio of special application transformers for both AC and DC voltages. This includes liquid-filled and dry-type transformers for other applications not mentioned, like variable speed drives, furnace transformers, rectifiers, traction transformers, subsea transformers and mobile transformers.

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