More Power For You.
Niagara Power Transformer produces liquid filled power and special application transformers for service in the most extreme conditions and demanding applications anywhere in the world.
A LOT HAS CHANGED OVER THE LAST 100 YEARS.
Travel back in time and see what we’ve accomplished.
1924
Our original company, Erie Electric Corp., was founded by John H. Darby, with a borrowed $300 in capital.
1933
Designed and manufactured our first new Niagara industrial transformer.
1943
Designed and manufactured our first new Niagara utility grade transformer.
1957
Strong growth in our company requires expansion of our facilities to a total of 10 buildings.
1977
Expanded Into disc winding and on-load tap-changing capabilities to support growing utility substation market
1979
Fred W. Darby becomes second generation company president. Performed first successful short circuit test.
1990
Shipped 70 sealed dry type transformers to Antarctica suitable for -70 degree ambient temperatures.
1999
Completed our 75,000th transformer.
2000
John F. Darby becomes third generation company president.
2013 - 2018
Opened our production campus with a $45 million investment in Buffalo, New York.
2019
Opened our new $4 million advanced engineering, research, and development center in Buffalo, New York.
2020
Niagara Transformer Corp. evolves into its new name Niagara Power Transformer
2024
Celebrated our 100-year anniversary and were welcomed Into the Quanta Services Family
2025
Chris Kraft becomes company president.
OUR TRANSFORMERS,
From the test floor to the substation yard, we put our expertise to the ultimate test every day.
TEST FLOOR
FAILURE RATE
3.25%
over the last 10 YEARS
FIELD
FAILURE RATE
0.15%
over the last 10 YEARS
ISO
9001
80
BEST-IN-CLASS POWER TRANSFORMERS
Choose from the list of our featured transformer types below.
Liquid-Filled Power Transformers
- Single-Phase Power Transformer
- Substation Transformers
- On-load Tap Changing Transformers (OLTC)
- Generator Step-Up Transformers (GSU)
- Unit Auxiliary Transformers (UAT)
- Reserve Auxiliary Transformers (RAT)
- Station Service Transformers (SST)
- Unit Substation Transformers
- Auto-Transformers
- Step-Up Transformers
- View All
Rectifier Duty Transformers
- Drive Duty Transformers
- Pulse Transformers (Rectifier Duty)
- Variable Speed Drive Duty Transformers
- Drive Output Transformers
- Process High Current Duty Transformers
- Extra Heavy-Duty Traction Transformers
- Multiple Phase Shifted Windings Transformers
- Static Frequency Converter Transformers
- High Current Rectification Transformers
- Cyclo-Converter Transformers
- Excitation Transformers
- Static Excitation Transformers
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Grounding Transformers
Learn More
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
Special Applications
- Any type of Transformers in a Compartmental Type Tamper-Proof Enclosures
- Skid Mount Power Transformer
- Iron Core Reactors
- Marine Offshore Duty Transformers
- Motor Starting Auto-Transformers
- Phase-Shifting Transformers
- Mobile Substation Transformers
- Hazardous Location Transformers
- Furnace (Induction & Arc) Duty Transformers
- Mining Duty Transformers
- Distribution Transformer Manufacturer (Test Transformer)
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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
Manufacturing Excellence
Niagara Power Transformer is one of the most trusted liquid-filled power 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.
Certifications
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 competitive lead times.
RELIABLE RESOURCES
For additional information, industry & company news, answers to FAQs, downloadable documents and more; check out our resource section. View All ResourcesRead FAQ