The following is a partial list of SDS Clients:

• American Public Power Association
• South Dakota Telephone Association
• Columbia Water & Light
• ARUP Laboratories
• San Francisco Public Utilities Commission
• USF Companies
• XO Communications
• RC Willey Home Furnishings
• City of Riverside, California
• Easton Utilities Commission
• CR England, Inc.
• Indiana Municipal Power Agency
• Perry Spencer Communications
• Alameda Bureau of Electricity
• John Staurulakis, Inc.
• Arvig Communications Systems
• Hometown Connections
• Alabama Municipal Electric Authority
• Blackfoot Telephone Company
• WVT Communications
• City of Glendale, California
• Oklahoma Municipal Power Authority
• Wheat State Telephone
• South Central Communications
• AMP-Ohio
• Oil Workers Credit Union
• Orbit Irrigation Products
• IID Energy
• McLeod USA
• OC Tanner
• Moxley Carmichael Consultants
• Knoxville Utilities Board
• Bandera Electric Cooperative
• Association of Illinois Electric Co-ops

References are available on request.