ERMCO (Electric Research and Manufacturing Cooperative, Inc.) is headquartered in Dyersburg, Tennessee, and is a wholly owned subsidiary of Arkansas Electric Cooperatives, Inc. (AECI), Little Rock, Arkansas.
With all product lines made in the USA, ERMCO is one of the largest producers of oil filled distribution transformers and transformer components in the United States.
Incorporated in 1964, transformer production began in January 1971 in a new 32,000 square foot facility. Since that startup, ERMCO has expanded into 400,000 square feet in two buildings in Dyersburg, plus 500,000 square feet of production area in a leased facility in Greeneville, Tennessee, for its components business.
ERMCO has been manufacturing single phase pole and pad transformers in the same building since its beginning in 1971. In 1999, ERMCO purchased a building and property adjacent to the existing single phase manufacturing facility and entered the three phase padmount market. The Dyersburg property includes approximately 40 acres to support additional growth well into the future.
In January 2013 ERMCO acquired the AECI Specialty Transformer Plant in Little Rock, Arkansas. This acquisition expanded the ERMCO product offering to include small and fractional kVA units ranging in size from 1/2 to 3 kVA and allows for increased production capacity of single phase pole mount transformers. The plant has approximately 40,000 square feet of manufacturing area.
In 1999, ERMCO purchased the General Electric Transformer Components company. The business was renamed ERMCO Components, Inc. (ECI), and an existing off shore manufacturing facility was moved back into the United States in a plant leased from BTL Industries located in Greeneville, Tennessee. ECI components are sold to transformer manufacturers domestically and internationally.