Hendrix (Marmon Utility LLC)
Spacer cable, tree wire, insulators and other overhead molded accessory products
Milford, NH
Ilpea Industries (Holm Industries)
Corrugated conduit, guy guard, and U-guard
Scottsdale, IN
Lapp Insulators / Pfisterer
Porcelain and polymer insulators for substation and transmission, Transmission hardware
Le Roy, NY
Pascor (Pacific Air Switch Corp.)
Air disconnect switches for transmission and distribution
Forest Grove, OR
S&C Electric Company
Distribution and Transmission Switching and Fusing Equipment, Capacitor Controls, Distribution Automation, Power Systems Services, Microgrids
Chicago, IL
Sunrise Technologies
Ripley Lighting Controls
Photocells, lighting controls and relays
Raynham, MA

Trench Group
Air core reactors, instrument transformers, earth fault protection devices, bushings, line traps, relay communications, protection and control equipment
Scarborough, ON, Canada
Unifin / Cardinal Pumps
Transformer and generator cooling products, Cardinal transformer oil pumps
London, ON, Canada and Twinsburg, OH
Utilco
Overhead and underground connectors for utility distribution, Lineman Tools
Cincinnati, OH
Virginia Transformer
Georgia Transformer
Small, medium, and large power transformers
Roanoke, VA and Rincon, GA