Electrical Equipment Manufacturing Companies in Illinois

Illinois has approximately 13,000 manufacturing establishments and 570,000 manufacturing employees. Illinois is a top-five manufacturing state, with Chicago as a metal fabrication and food processing center, Peoria as Caterpillar's headquarters, and a vast network of industrial suppliers.

Illinois is one of the leading states for electrical equipment manufacturing. Electrical equipment manufacturing encompasses companies that produce power distribution equipment, transformers, switchgear, electric motors, generators, wiring devices, and lighting equipment. This industry is experiencing strong growth driven by grid modernization, data center construction, EV charging infrastructure, and renewable energy deployment.

Transformer Manufacturers: Companies producing power and distribution transformers from small pad-mounts to large utility substation units.

Switchgear & Panel Builders: Manufacturers of low, medium, and high-voltage switchgear, motor control centers, and electrical panels.

Electric Motor Manufacturers: Companies producing AC/DC motors, drives, and generators for industrial, HVAC, and transportation applications.

Wiring Device Makers: Manufacturers of outlets, switches, connectors, and wiring accessories for commercial and residential use.

Lighting Equipment Producers: Companies manufacturing LED lighting, industrial fixtures, and smart lighting control systems.

Major industrial centers in Illinois include Chicago, Rockford, Peoria, Aurora, Joliet, and Elgin. These cities have concentrations of manufacturers across sectors including metal fabrication, food processing manufacturing, and chemical manufacturing.