Our Journey Through the Decades
The Beginning of Us
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Expansion & Diversification
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Powering the Future
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Incorporated in 1964, ERMCO began transformer production in January 1972 with 30 employees producing 30 units weekly in a 32,000 square foot facility. It was the first plant in the nation built solely by rural electrics to make single-phase padmount transformers new to the market.
ERMCO was also one of the first transformer manufacturers to substitute aluminum foil for copper wire in transformer coils due to the expense of copper and government regulations.
The eighties & nineties were decades of abundant expansion, diversification, and growth for the company. ERMCO expanded its business into three-phase padmount transformers and purchased a building/property adjacent to the single-phase facility to produce the three-phase transformers.
The company diversified its product line with the purchase of General Electric Transformer Components Company in Greeneville, TN. The company was renamed ERMCO Components, Inc. (ECI).
In 2017, ERMCO acquired GridBridge, our Advanced Learning Center located in Raleigh, NC. Gridbridge develops state-of-the-art technology combining hardware, software, and data management into cutting-edge solutions for utility partners.
As of 2021, the ERMCO campus in Dyersburg, Tennessee, had four facilities and 1.5-million square feet of production space spanning 150 acres and was the largest employer in Dyersburg and employed 1450+ dedicated people.
In 2022, ERMCO acquired Spire Power Solutions. Headquartered in Athens, GA, Spire had been serving the electrical utility, commercial and industrial sectors for over 100 years. Spire manufactures a full range of liquid-filled and dry-type transformers through the Power Partners, Pioneer Transformers, Jefferson Electric and V&F Transformer brands.
As of 2025, the ERMCO campus in Dyersburg, Tennessee, manufactured it's 9 Millionth Transformer.
Construction began on the 32,000 sq-ft, $350,000 Single Phase facility.
After installing $200,000 worth of equipment, production of core and coils began with a staff of 30 employees.
The plant expanded to 145,000 square feet during the 80s, with additions in 1982 and 1989. The 1989 expansion included a 45,000 square-foot tank manufacturing facility which allowed ERMCO to manufacture its transformer tanks.
In 1999 ERMCO manufactured their first Three Phase Transformer.
In 2017, ERMCO acquired GridBridge, our Advanced Learning Center located in Raleigh, NC. Gridbridge develops state-of-the-art technology combining hardware, software, and data management into cutting-edge solutions for utility partners.
In 2022, ERMCO acquired Spire Power Solutions. Headquartered in Athens, GA, Spire had been serving the electrical utility, commercial and industrial sectors for over 100 years. Spire manufactures a full range of liquid-filled and dry-type transformers through the Power Partners, Pioneer Transformers, Jefferson Electric and V&F Transformer brands.
ERMCO has acquired a 158,000 sq. ft. facility in Bristol, WI, strengthening its commitment to U.S. manufacturing and grid innovation. This strategic expansion boosts production capacity and supports utilities and renewable energy providers across North America.
2025
3400+
1972
30
2023
1.5 Million Sq. Ft.
1972
150K Sq. Ft.
2024
650K
1988
70K
“With our latest integrations, we’re capitalizing on growth opportunities by sharing best practices, improving product designs, and optimizing processes. We’re committed like never before — to supporting our own people, and to closing the supply-demand gap.”
Tim Mills
CEO and President, ERMCO-ECI
