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CompactStar™ Power Transformers

More power, smaller footprint


CompactStar™ - A premium, compact, and lightweight transformer optimized for the Total Ownership Cost (TOC) of offshore substations and a perfect-fit solution for urban substations.

CompactStar™ combines Hitachi Energy's global leadership and transformer expertise with innovative design and premium materials that have enhanced thermal performance, making it a smart investment for customers looking to reduce TOC and improve operational safety. 

CompactStar™ is optimized for space-saving and weight reduction without compromising on performance. It is up to 30% smaller in size and weight compared to conventional transformers, making it a perfect-fit solution for space-constrained areas. It also reduces the structural costs of the offshore platform, allowing for more efficient use of space.

Despite its smaller size, CompactStar™ provides high-capacity output, making it an ideal solution for meeting increasing renewable energy demands. It can provide up to 30% more capacity than conventional transformers in the same space.

CompactStar™ uses Ester fluids for cooling optimization, which offers increased operational safety for people and the environment.

Applications for CompactStar™

Compact Footprint

  • Reduced overall footprint and weight of the transformer by up to 30%

Total Cost of Ownership (TOC)

  • Reduction of the overall size and weight of the platform
  • Simplification of fire suppression system
  • Reduction of lifting and transportation costs
  • Reduced overall TOC of offshore substations
  • Lower insurance costs

Higher Capacity

  • Increased power capacity using the reduced area 

Increased Operational Safety

  • Increased operational safety for people and environment


Know more about CompactStar™ Power Transformers