| Company | Location |
| Advanced Energy | Fort Collins, CO |
| Agilent | Fort Collins, CO |
| Air Force Labatories | WPAFB |
| Air Liquide | Denver, CO; Houston, TX. |
| Air Methods | Englewood, CO |
| Alignment & Condition Monitoring | Northglenn, CO |
| Alza Corporation (Johnson & Johnson) | Vacaville, CA |
| Amgen Inc. | Longmont, CO; Boulder, CO; Juncos, Puerto Rico |
| Birdquest, LLC. | Mexico, MO |
| Calpine - Rockgen Energy Center | Cambridge, WI |
| Chemtura | Middlebury, CT |
| Chiller Systems Service | Lakewood, CO. |
| City of Fort Collins Water Treatment | Fort Collins, CO |
| City of Greeley Water Treatment | Greeley, CO |
| City of Independence Power and Light | Independence, MO |
| Coors Brewing Company | Golden, CO |
| Colorado State University (EECL) | Fort Collins, CO |
| Del-Tin Fibers | El Dorado, AR |
| Denver Electric Motor | Denver, CO |
| Denver Newspaper Agency | Denver, CO |
| Denver Water | Denver, CO |
| Diboll Fiberboard | Diboll, TX |
| EMCOR Facilities Service, Inc. | Fort Collins, CO |
| Energy Repair Services | Denver, CO |
| Firefly Engineering | Woods Cross, UT |
| Frontier Refining | Cheyenne, WY; El Dorado, KS. |
| General Mills | Hannibal, MO |
| Great Lakes Chemical Company | El Dorado, AR |
| Henderson Mill | Empire, CO |
| Holly Refining | Artesia, NM |
| Inland Paperboard and Packaging | Orange, TX |
| International Paper | Roanoke Rapids, NC |
| Kodak | Windsor, CO |
| Koch Cellulose | New Augusta, MS |
| Kraton Polymers | Belpre, OH |
| Labratory of Atmospheric & Space Physics | Boulder, CO |
| Leprino Foods | Denver, CO; Fort Morgan, CO; Ravenna, NE; Roswell, NM |
| Lion Oil company | El Dorado, AR |
| Long Mechanical Solution | Denver, CO |
| MidAmerican Energy | Des Moines, IA |
| Nichols Aluminum | Fort Lupton, CO |
| Nixon Generating Station | Fountain, CO |
| Owens Illinois | Windsor, CO |
| Plum Creek Manufacturing | Columbia Falls, MT |
| Phoenix Vibration Institute | Phoenix, AZ |
| Prime Machine | Salt Lake city, UT |
| Quadna Pumps | Westminster, CO |
| Ranch Way Feeds | Fort Collins, CO |
| Red Rocks Community college | Lakewood, CO |
| Reliance Electric | Denver, CO |
| Reynolds Engineering | Muscatine, IA |
| Roche Colorado Corporation | Boulder, CO |
| Rockwell Automation | Milwaukee, WI |
| Sega Inc. | Stilwell, KS |
| Star Tech Instruments | Baton Rouge, LA |
| Suncor Refining | Commerce City, CO |
| Sunoco Chemicals | Laporte, TX |
| Spendrup Fan Company | Grand Junction, CO |
| TECO Energy | El Dorado, AR |
| Temple - Inland | Wheat Ridge, CO |
| Tropicana | Bradenton, FL |
| University of Arizona | Tucson, AZ |
| US Fisc | Misawa, Japan |
| Vail Resorts | Vail, CO |
| Western Summit Constructors | Englewood, CO |
