AEROTEC (IN, KY & OH) Sensing company that provides transmission line routing, line rating/engineering models, and facilities GIS data to the electric power industry
	BELDEN (IN, KY, OH, MI & W.PA) Connective wire and cable, Hirshman: Ethernet switches & networking, Lumberg: Sensor & actuator connectors
	CHENTRONICS (IN, KY & OH) Supply high Energy Ignition systems to OEM burner manufacturers
	DELTA STAR, INC. (IN, KY, MI, OH & PA) 5-90 MVA Transformers, Zig-Zag Transformers, Mobile Substations and Equipment
	DIS-TRAN PRODUCTS (IN, MI & OH) Wood Crossarms, Packaged Substations, Substation Steel and Transmission Structures
	EATON (IN, KY, OH) Electro-Centers, Vacuum Switchgear, MV Power Fuses, Network Protectors, Metal Enclosed Capacitor Banks, Turn Key Projects
	FISHER PIERCE / OLC (SUNRISE TECHNOLOGIES) (N IN & MI) Outdoor Lighting Photocontrols
	FORMED PLASTICS, INC.  (IN, KY & OH) Spheres, Post Top Globes, Refractors
	GE LIGHTING SYSTEMS (IN, KY, MI, OH & PA) Security, Roadway, Area/Flood and Decorative Lighting
	HAPCO (IN & OH) Aluminum Pole Products
	HENDRIX WIRE & CABLE, INC.  (IN, KY & OH) 15kV-35kV TRXLP URD Cable and 15kV-69kV Aerial Spacer Cable Systems
	THE KERITE COMPANY (IN, KY & OH) 5-138kV EPR Cable, Turn-Key Systems
	MITSUBISHI ELECTRIC POWER PRODUCTS, INC. (IN, KY & OH) 138kV-500kV SF6 Circuit Breakers, Generator Circuit Breakers, STATCOM, GIS Substations & Equipment, Large Power Transformers
	MTC TRANSFORMERS (IN, KY, OH, MI & W.PA) Engineered Rewind and Repair of Medium Power Oil Filled Transformers, and manufacturer of New Dry Type Transformers & Air Core Reactors
	PASCOR / PASCOR ATLANTIC (IN, KY, MI, W.PA & OH) 15kV-765kV Gang Operated AL & CU Substation Air Braeak Switches, Motor Operators
	RITZ INSTRUMENT TRANSFORMERS (OH, MI & IN) 600 V – 72 kV current and voltage transformers
	SHAKESPEARE COMPOSITE STRUCTURES (OH & IN) Fiberglass pole, cross-arms & Acoustic Walls
	SBS STORAGE BATTERY SYSTEMS  (IN, KY, OH & MI) Substation & Power Plant Batteries, Racks, Enclosures, Chargers, Inverters, Monitoring, Testing
	STREET & AREA LIGHTING COMPANY (IN, MI, OH & WV) Lighting Fixture Mast Arms
	THERM-A-GUARD   (IN, KY, OH, & MI) Wildlife Protectors
	THERMODYNAMICS, INC.  (IN, KY, MI, W. PA & OH) Secondary Pedestals
	THOMAS & BETTS CORP.  (IN, KY, MI & OH) Blackburn Connectors, Elastimold Cable Accessories, Homac Connectors, Hi-Tech Fuses, Joslyn Hi-Voltage
	UNION METAL (IN, KY, MI, W. PA & OH) Decorative Lighting and Distribution Wood Pole Equivalent, Aluminum and Steel Poles
	WESCHLER INSTRUMENTS  (IN, OH, KY,MI & PA) A precision temperature monitor product for liquid immersed power and distribution transformers.