More Power For You.

Niagara Power Transformer produces power and special application transformers for service in the most extreme conditions and demanding applications anywhere in the world.

It’s Time We Reintroduce Ourselves.

Over the last century we’ve provided dependable power solutions to clients all over the world. Our business has grown rapidly and evolved significantly. What our company has evolved into bears little resemblance to the manufacturer of small dry type and pole top transformers that started in a former Buffalo trolley barn in 1924. With this in mind, we have decided to align our corporate name with our exciting future, while still preserving a strong connection to our historic past.

We’ve introduced new cutting-edge technologies, expanded our state-of-the-art manufacturing facility, and broadened our testing capabilities. With these advancements, our product offering has grown and the experience of our people has deepened. All of it has been done to remain a cutting edge, world leader in the design and manufacturing of special application and medium liquid-filled power transformers.

So yes, we’ve grown – and in many ways, grown up – but one thing that hasn’t changed over the last 100 years is our unwavering commitment to excellence and our unwavering commitment to you.

Going forward, you can depend on Niagara Power Transformer just like you depended on Niagara Transformer, to continue manufacturing world-class liquid-filled transformers and to continue to provide you dependable power solutions today, tomorrow, and for many years to come.


Choose from the list of our featured transformer types below.

Voltage Regulator

Voltage Regulators

Voltage regulators can use a variety of on-load tap changing devices to provide this voltage compensation. Up to 200 MVA of through power.

  • Up to 50 MVA base rating
  • Up to 138 kV, 650 kV BIL
  • 3 phase
  • Resistive or reactive on load switch
  • Custom tap voltages available
  • Auto/manual control
  • Local/remote control
  • Forward or reverse power (optional)
  • Line drop compensation (optional)
  • Retrofit of existing equipment (optional)
  • High efficiency
  • Low sound level
Learn More
Industries We Serve

  • Aerospace
  • Automotive
  • Bio Gas Power
  • Cement
  • Chemical
  • Concentrated Solar Power
  • Electric Utilities
  • Electrochemical
  • Electrowinning
  • Export
  • Geothermal
  • Government
  • Laboratories
  • Marine – Offshore
  • Mass Transit
  • Military
  • Mining
  • Nuclear
  • Oil and Gas
  • Petrochemical Power Generation
  • Pulp and Paper
  • Refineries
  • Renewables
  • Specialty
  • Steel
  • Waste Water
  • Wind Energy


From the test floor to the substation yard, we put our expertise to the ultimate test every day.



over the last 10 YEARS



over the last 13 YEARS





Niagara Power Transformer is one of the most trusted liquid-filled transformer manufacturers in the world, but we’re not resting on our over 100 years of continuous service. Having recently invested $45 million into our facilities, including enhanced testing and winding capabilities, we’re focused on the future of the power industry. If there’s anything we’ve learned over our long history, it’s that our real power is giving you confidence in our commitment to quality and safety, engineering depth and experience, design nimbleness, manufacturing excellence and production flexibility, and continuous employee engagement – all while maintaining fast and reliable shipping schedules.


Small business certified for federal contracting, UL, CUL, RUS, DNV, ABS, Lloyd’s Register, FM UBC, CSA, WEEE, RoHS, RoHS China, CE, IEC, GOST, BS, PIP, KC

“At our core, Niagara Power Transformer has the best people, taking on the toughest engineering challenges with the highest quality and the shortest lead times.”

John F. Darby, President


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