Pennsylvania Transformer Technology, LLC (PTT) is a U.S.-owned company under Quanta Services with roots going back to 1929. PTT is recognized as a trusted leader in providing oil-filled power transformers for utility and industrial markets in North America. The company designs and produces a full range of transformers—from 5 MVA to 750 MVA through 765kV—covering applications such as generator step-up units, autotransformers, grounding/zig-zag units, mobile units, and shunt reactors. With ISO 9001:2015-certified facilities in Canonsburg, PA and Raeford, NC, PTT combines advanced engineering tools (like 3D modelling and finite-element analysis), large-scale manufacturing assets and full life-cycle service support to deliver reliable high-performance solutions.
Pennsylvania Transformer Technology, LLC carries forward nearly a century of American transformer manufacturing expertise.
We are a U.S.-owned manufacturer serving the North American power industry with reliability and long-term stability.
PTT operates two fully integrated manufacturing campuses designed for end-to-end transformer production.
Our engineering and production teams combine modern tools with deep experience to deliver durable, high-performance transformers.
Our transformers support critical infrastructure across diverse sectors throughout the U.S. and Canada.
We manufacture a full range of oil-filled power transformers that support utility, industrial, and renewable applications.
We meet and exceed the highest transformer standards through controlled processes and industry-recognized certifications.
We proudly engineer and assemble in the United States, ensuring dependable domestic supply for critical power infrastructure.
PTT goes beyond high-voltage transformer production with comprehensive parts, field service, and technical support.
Our commitment is to deliver the highest-quality power transformers while ensuring industry-leading reliability and performance.
CANONSBURG, PA OPERATIONS The former site of McGraw-Edison and Cooper Power Systems transformer operations has undergone extensive modernization to make it a state-of-the-art transformer production facility
Location • 30 Curry Avenue, Canonsburg, PA 15317• 20 miles from Greater Pittsburgh International Airport• Near the intersection of Interstate Highways 79 and 70• Visible From I-79 at Canonsburg Exit 45 Plant • 90 Acres of Land • 18 Buildings, 1 million square - feet Features • Test Capability: 765 kV, 2400 kV BIL • 500 Tons of Lifting Capacity • North America’s largest GEORG Automatic Core Cutting and stacking Line • 200,000 square-foot Tank Fabrication Bay• Certified ISO 9001:2015 with Design
RAEFORD, NC OPERATIONS Our Raeford, NC facility was built in 1992 and is devoted to the production of small power transformers and distribution transformers
Location • 201 Carolina Dr., Raeford, NC 28376• 20 Miles From the Fayetteville, NC Airport• 2 Hours from Raleigh, NC Airport• 10 Acres of Land• 56,000 square - feet Features • Test Capability: 161kV, 650 kV BIL• 60 Tons of Lifting Capacity• Vacuum Oil Filling• Vapor-phase Processing• Oil De-aeration Facility
