| Diesel | Engine Pump Drivers | Clarke Fire Protection Products, Inc. | http://www.clarkefire.com |
| Diesel |
| Detroit Diesel Corp. | http://www.detroitdiesel.com |
| Diesel | OEM | Stewart & Stevenson Services, Inc. | http://www.ssss.com |
| Diesel |
| Caterpillar Inc. | http://www.cat.com/engines |
| Diesel | Fire Pump | Clarke Fire Protection Products, Inc. | http://www.clarkefire.com |
| Gas Turbine |
| Alturdyne | http://www.alturdyne.com |
| Gas Turbine |
| Solar Turbines Inc. | http://www.solarturbines.com |
|
| Aaron Equipment Companies | http://www.aaronequipment.com |
|
| Applied Thermodynamics | http://www.appliedthermodynamics.com |
|
| Belyea Co. Inc. | http://www.belyeapower.com |
|
| California Power Partners Inc. - Calpwr | http://www.calpwr.com |
|
| Cominter Corp. | http://www.cominter.net |
|
| Electra Therm Inc. | http://www.electratherm.com |
|
| Environmental Power Corp. | http://www.environmentalpower.com |
|
| Everest Sciences Inc. | http://www.everestsciences.com |
|
| Precision Combustion Inc. | http://www.precision-combustion.com |
|
| Stirling Technology Co. - STC | http://www.stirlingtech.com |
|
| United Transmission Exchange | http://www.unitedtransmissionexchange.com |
|
| Vericor Power Systems Inc. | http://www.vericor.com |