The following is a sample of companies
Spanwell proudly provides products and services to.

AmerenEnergy
American Chemet Corporation
American Electric Power
Arizona Electric Power
Barrick Goldstrike Mine
Basin Electric Power Corporation
BMW Constructors, Inc.
Burlington Northern Sante Fe Railway
Ceco Concrete Construction
ConocoPhillips Company
Enerfab, Inc.
Eveready Industrial Services Corporation
ExxonMobile Global Services
First Energy Generation Corporation
Great River Energy
Imperial Oil Company, Canada
K & D Pratt Company
Lower Colorado River Authority
Luminant Generation Company
Minnesota Power
Montana Sulphur and Chemical Company
NewMech Companies Inc.
Nooter Construction
NAES Power Contractors, Eastern Division
NAES Power Contractors, PMRI Division
PPL Generation LLC
PPL Montana LLC
PacifiCorp
Phillip Services Corporation
R&M Electrical Group Ltd., United Kingdom
SGL Carbon Group
Saskatchewan Power Corporation
TIC of Wyoming
TIMEC
Tri-State G. & T. Association
W. G. Yates and Sons Construction
Welding Services, Inc.