Selsius™ has completed work for a wide variety of private and public sector clients including:
- Afton Chemical Corporation
- Air Mobility Command, SAFB
- Allsup Inc.
- Ameren Illinois
- America's Central Port
- Amsted Rail
- Basler Electric Company
- Beno J. Gundlach Company
- Budnick Converting, Inc.
- Buy a Farm Land & Auction Co.
- Cahokia Public Library District
- Collision Plus
- Cooper B-Line
- Coyote Consulting LLC
- CTS Technology Solutions, Inc.
- Customized Distribution Systems
- Diel & Forguson Financial Group
- DISA (Defense Information Systems Agency)
- Edgewood Children's Center
- Ehrhardt Tool & Machine
- Fairfield Processing
- Fairview - Caseyville Township Fire Protection District
- Fairview Heights Police Department
- Gateway Mine
- Gateway Regional Medical Center
- Global Brass
- GSA FSA Financial Services
- Harrisonville Telephone Company
- Heidtman Steel, Inc.
- Holten Meat Incorporated
- HQ SDDC (Headquarters Surface Deployment & Distribution Command)
- Impact Strategies
- Ironhorse Resources, Inc.
- Jet Aviation St. Louis, Inc.
- JW Aluminum
- Landshire Incorporated
- Legrand Cablofil
- Madison Community Unit School District #12
- Magnesium Elektron North America, Inc.
- Mascoutah Community Unit School District #19
- Memorial Hospital
- Midwest Nonwovens, Inc.
- Missionary Association
- Oasis Systems
- O'Fallon School District 90
- Petroleum Fuel and Terminal Company
- Prairie Farms Dairy, Inc.
- Prairie State Generating Company
- Proctor & Gamble Manufacturing Company
- Regional Leadership & Development Committee
- Siemens Manufacturing Company, Inc.
- Solutia, Inc.
- Southern Illinois Healthcare Foundation
- Southside Machine Works, Inc.
- Southwestern Illinois College
- St. Clair County IGD (Intergovernmental Grants Dept.)
- St. Elizabeth's Hospital
- SunCoke Energy
- Terra Drill
- The Greater Southwestern Illinois Association of Plumbing, Heating, Cooling & Mechanical Contractors
- The ROHO Group
- Total Titanium
- Trouw Nutrition USA, Inc.
- Turner Electric, LLC
- US Steel Corporation
- US Transportation Command
- USDA Rural Development DCFO
- Veolia Environmental Services
- Village of O'Fallon
- Village of Shiloh