| Chemical treatment |
| Seaco Technologies Inc | http://www.seacotech.com |
| Condensers |
| CTI Industries Inc. | http://www.cti-ind.com |
| Condensers |
| Graham Corp. | http://www.graham-mfg.com |
| Condensers |
| Niagara Blower Co. | http://www.niagarablower.com |
| Condensers |
| Schulte & Koerting | http://www.s-k.com |
| Condensers |
| Southport Equipment Corp. | http://www.southportequipment.com |
| Direct-Use Cooling Water Systems |
| Niagara Blower Co. | http://www.niagarablower.com |
| Direct-Use Heat Exchangers and Pumps |
| CTI Industries Inc. | http://www.cti-ind.com |
| Direct-Use Heat Exchangers and Pumps |
| Niagara Blower Co. | http://www.niagarablower.com |
| Direct-Use Heat Exchangers and Pumps |
| NITech Inc. | http://www.nitech-vac.com |
| Direct-Use Heat Exchangers and Pumps |
| Schutte & Koerting | http://www.s-k.com |
| Direct-Use Heat Exchangers and Pumps |
| Tranter PHE, Inc. | http://www.tranterphe.com |
| Direct-Use Heating |
| American Photovoltaics Homes and Farms Inc. | http://members.aol.com/sunsenergy |
| Direct-Use Heating |
| McNeil Technologies Inc. | http://www.mcneiltech.com |
| Direct-Use Heating |
| Solar Turbines Inc. | http://www.solarturbines.com |
| Power Generation |
| Aspen Water Inc. | http://www.aspenwater.com |
| Power Generation |
| Energy & Process Corp. | http://www.energyandprocess.com |
| Power Generation |
| Magnum Energy Inc. | http://www.magnumenergy.com |
| Power Generation |
| McNeil Technologies Inc. | http://www.mcneiltech.com |
| Power Generation |
| Niagara Blower Co. | http://www.niagarablower.com |
| Power Generation |
| Solar Turbines Inc. | http://www.solarturbines.com |
| Power Generation |
| TurboCare Inc. | http://www.turbocare.com |
| Power Generation |
| Wow Energies | http://www.wowenergies.com |
| Power Generation Equipment |
| Alan Ross Machinery Corp. | http://www.rossmach.com |
| Power Generation Equipment |
| Belyea Co. Inc. | http://www.belyeapower.com |
| Power Generation Equipment |
| Everest Sciences Inc. | http://www.everestsciences.com |
| Power Generation Equipment |
| Solar Turbines Inc. | http://www.solarturbines.com |
| Power Generation Equipment |
| Southport Equipment Corp. | http://www.southportequipment.com |
| Power Generation Equipment |
| Stirling Technology Co. - STC | http://www.stirlingtech.com |
| Power Generation Equipment |
| Stork H&E Turbo Blading Inc. | http://www.he-machinery.com |
| Power Generation Equipment |
| TurboCare Inc. | http://www.turbocare.com |
| Power Plant Control Systems |
| Ormat Nevada Inc. | http://www.ormet.com |
| Power Plant Control Systems |
| TurboCare Inc. | http://www.turbocare.com |
| Pumps |
| Aspen Water Inc. | http://www.aspenwater.com |
| Pumps |
| Danotek Motion Technologies | http://www.danotekmotion.com |
| Pumps |
| Dett International Inc. | http://www.dettgroup.com |
| Pumps |
| NITech Inc. | http://www.nitech-vac.com |
| Pumps |
| TurboCare Inc. | http://www.turbocare.com |
| Software |
| Gaia Geothermal lLC | http://www.groundloopdesign.com |
| Software |
| GSE Power Systems Inc. | http://www.gses.com |
| Software |
| Wisconsin University-Madison Solar Energy Laboratory | http://sel.me.wisc.edu/trnsys |
| Valves |
| Energy & Process Corp. | http://www.energyandprocess.com |
| Valves |
| Hilliard Corp. | http://www.hilliardcorp.com |
| Valves |
| TurboCare Inc. | http://www.turbocare.com |
|
| Hamilton Precision Metals Inc. | http://www.hpmetals.com |
|
| Jamison Products LP | http://www.jamisonproducts.com |