- Capital Tristate
- CED / Consolidated Electrical Distributors, Inc.
- Chris-More Inc.
- Ciro Electrical Supply Company
- Codale Electric Supply Inc.
- Colonial Electric Supply
- Columbia Specialty Company
- Complete Industrial and Electrical Supply
- Consolidated Supply Co.
- Cooper Electric Supply Inc.
- Crawford Electric Supply
- Crescent and Sprague Supply Co.
- Crescent Electric Supply
- CSC Communications Supply Corporation
- Customer Service Electric Supply
- E.B. Horsman & Son
- Echo Group
- Eck Supply Co.
- Edges Electrical Group
- EECOL Electric (Canada)
- Electric Supply of Tampa, Inc.
- Electrical Distributors, LLC
- Electrical Supplies Inc.
- Electrical Wholesale Supply Co., Inc.
- Electrical Wholesale Supply, A Division of Border States
- Electrical Wholesalers (Calgary) Ltd.
- Electrical Wholesalers (CT)
- Electrical Wholesalers Upper New England (MA)
- Elliott Electric Supply
- Energy Electrical Distribution Co.
- Eoff Electric Supply
- Erb Supply Co, Inc.
- Samson Electrical Supply
- Schaedler Yesco Distribution
- Service Electric Supply, Inc.
- Shealy Electrical Wholesalers, Inc.
- Shepherd Electric Supply
- Sigillo Supply, Inc.
- SPS Companies
- Stainless Tubular Products
- Standard Electric
- Standard Electric Company
- Stanion Wholesale Electric Co
- State Electric Supply Company, Inc.
- Steiner Electric Company
- Stoneway Electric Supply
- Summit Electric Supply
- Sun Valley Electric Supply
- Sunrise Electric Supply, Inc.
- Swift Electrical Supply
- Wallington Plumbing and Heating Supply Inc
- Walters Wholesale Electric Co
- Warren Electric Supply
- Werner Electric Supply
- WESCO Distribution (Canada)
- Westburne Supply Inc. - Ontario
- Western Extralite
- Wholesale Electric Supply Co of Houston
- Womack Electric Supply Co.
- World Electric Supply
- Wyandotte Electric Supply