About Us

IST Power is a renowned specialist transformer manufacturer engaged in the design, engineering, manufacture and supply of a wide range of transformers, reactors and other wound components up to 8MVA. IST Power has developed considerable expertise in voltages typically up to 66kV for grid systems and 250kV for test transformers supplying solutions to a diverse range of markets and applications throughout the world.

IST Power is the result of a merger of three reputable transformer companies and our history dates back to 1935.

  • International Transformers
  • Stewart Transformers
  • Transtech Transformers

As a complete solution provider, we develop ideas from concept through all evolving stages of development to full product realisation. We utilise a range of tools to support the evaluation of a concept design, from computational fluid dynamics software to thermal, structural and electrostatic studies, all of which help validate our solutions. Fully engineered drawings, process instructions and specifications are generated using Autodesk 3D Inventor and Autocad LT software packages.

Our personnel are actively engaged in developing markets such as wind, subsea, tidal and photovoltaics.  Many of our developed and mature products are being produced in high volume and supplied throughout the world using supply practices such as kanban and consignment stock.

The Company’s strength has been developed from the valued longevity and trust of our customers, ranging from world class blue chip organisations to local independent companies, all of whom are valued and have helped shape the business that we are today!

IST Power has the experience, skill sets and infrastructure to support your needs backed by a dedicated and focused team.