| Company | Membership Level | Contact | Address | City | State | Zip | Phone |
| Adams Valves, Inc. | Small Business |
Kyle Bordelon
| 12303 Cutten Road | Houston | TX | 77066 | (281) 453-3732 |
| Agua Caliente | Small Business |
Trent Yang
| 6501 E. Belleview Ave., Suite 400 | Englewood | CO | 80111 | (303) 486-1448 |
| Almar Professional Land Services, Inc. | Small Business |
Marty Miller
| 450 Hillside Dr. Suite A-160 | Mesquite | NV | 89027 | (970) 260-2214 |
| Alstom Power | Full |
Hope Dipierro
| 175 Addison Road | Windsor | CT | 06095 | (860) 285-3934 |
| AltaRock Energy, Inc. | Full |
Jessamine Guerzon
| 4010 Stone Way N., Suite 400 | Seattle | WA | 98103 | (206) 729-2400 |
| ALTERNATIVE EARTH RESOURCES, INC. | BOARD |
Cynthia Woodward
| 1140 West Pender Street, Suite 840 | Vancouver, British Columbia | Canada | V6E 4G1 | (604) 688-1553 |
| Alterra Power | Small Business |
Monte Morrison
| 5500 Soda Lake Road | Reno | NV | 89406 | (775) 867-5093 |
| American Cargoservice, Inc. | Small Business |
Terry Simokat
| 7880 Convoy Court | San Diego | CA | 92111 | (858) 565-4125 |
| AMSA, Inc | Small Business |
Cindy Wallick
| 1406 E. Pine St | Midland | MI | 48640 | (989) 839-0377 |
| Ashland, Inc. | Full |
Norman Kellogg
| 528 Chelsea Place | Carson City | NV | 89703 | (661) 324-7735 |
| A-T Controls Inc. | Full |
Ron Ruehlmann
| 9955 International Blvd. | Cincinnati | OH | 45246 | (513) 247-5465 |
| Atlas Copco Mafi-Trench Company | Full |
Susan Bouvette
| 3037 Industrial Parkway | Santa Maria | CA | 93455 | (805) 928-5757 |
| Baird Hanson LLP | Small Business |
Brian Hanson
| 171 Sky Trail Road | Boulder | CO | 80302 | (303) 447-9800 |
| Baker Hughes | Full |
Nic Nickels
| 5510 Skylane Blvd., Suite 203 | Santa Rosa | CA | 95403 | (707) 523-1751 |
| Bakersfield Pipe and Supply, Inc. | Full |
Lisa Razzari
| 2903 Patton Way | Bakersfield | CA | 93308 | (661) 616-6064 |
| Bob Lawrence & Associates | Full |
Bob Lawrence
| 345 South Patrick Street | Alexandria | VA | 22314 | (703) 836-3654 |
| Bowman Geothermal, LC | Small Business |
Justin Mahlmann
| 8001 Irvine Center Drive, Suite 400 | Irvine | CA | 92618 | (703) 530-8093 |
| CALPINE CORPORATION | BOARD |
Mike Rogers
| 10350 Socrates Mine Road | Middleton | CA | 95461 | |
| Cameron | Full |
Roger Bastian
| 3004 Jewett Street | Bakersfield | CA | 93301 | (707) 836-1611 |
| Campbell Scientific, Inc. | Full |
Lynne Ruiz
| 815 W 1800 North | Logan | UT | 84321 | (435) 227-9000 |
| Capuano Engineering Company | Small Business |
Louis Capuano Jr.
| 2455 Bennett Valley Road Suite A112 | Santa Rosa | CA | 95404 | (707) 595-8740 |
| Chadbourne & Parke LLP | EXECUTIVE |
Keith Martin
| 1200 New Hampshire Ave., NW, Suite 300 | Washington | DC | 20036 | (202) 974-5600 |
| Continental Energy | Small Business |
Robert Rudman
| 777 North Ashley Drive, Suite 2810 | Tampa | FL | 33602 | |
| Cornell Energy Institute | University |
Jefferson Tester
| 2160 Snee Hall | Ithaca | NY | 14853 | (607) 254-7211 |
| Cornerstone Sustainable Energy, Inc. | Small Business |
Thomas Telegades
| 60 East 42nd Street | New York | NY | 10165 | (212) 796-4097 |
| Cryostar | |
Damien Thiolet
| 2 Rue de l'Industrie - ZI BP 48 | Hesingue | France | 68220 | |
| Cyrq Energy, Inc. | Executive |
Steve Brown
| Kearns Building, Suite 600, 136 South Main Street | Salt Lake City | UT | 84101 | (801) 875-4200 |
| Davenport Newberry Holdings LLC | Full |
Rob Miani
| 300 Atlantic Street, Suite 301 | Stamford | CT | 06901 | (203) 276-1600 |
| Dewhurst Group | Small Business |
Warren Dewhurst
| 13617 Anndyke Place | Germantown | MD | 20874 | (801) 209-2032 |
| DHI Services | Full |
Les Collins
| 2202 Zeus Court | Bakersfield | CA | 93308 | (661) 588-8310 |
| Domenic J. Falcone Associates | Full |
Domenic Falcone
| P.O. Box 129 | New Hope | PA | 18938 | (215) 862-1793 |
| DOSECC Exploration Services, LLC | Full |
Dennis Nielson
| 2075 South Pioneer Rd. | Salt Lake City | UT | 84104 | (801) 583-2150 |
| Drill Cool Systems, Inc. | Small Business |
Fred Nilson
| 627 Williams Street | Bakersfield | CA | 93305 | (661) 633-2665 |
| Earth Power Resources, Inc. | Small Business |
Ronald Barr
| 2407 S. Troost Ave. | Tulsa | OK | 74114 | (918) 746-5593 |
| Edcon-PRJ, Inc. | Full |
Michael Hobbs
| 171 S. Van Gordon Street, Suite E | Lakewood | CO | 80228 | (303) 980-6556 |
| EGS Inc. | Small Business |
Paul Brophy
| 2455 Bennett Valley Road Suite A-112 | Santa Rosa | CA | 95404 | (707) 595-8760 |
| ElectraTherm, Inc. | Full |
Celeste Dodge
| 4750 Turbo Circle | Reno | NV | 89502 | (775) 398-4680 |
| ENEL GREEN POWER NORTH AMERICA, INC. | BOARD |
Bob Manasse
| One Tech Drive, Suite 200 | Andover | MA | 01810 | |
| Energy 5.0 | Small Business |
Bud Cherry
| 1601 Forum Place, Suite 1010 | West Palm Beach | FL | 33401 | (561) 697-9800 |
| EnergySource | Full |
Paola Garcia
| 321 S. Waterman Ave., Suite 200 | El Centro | CA | 92243 | (760) 312-8000 |
| EvapTech, Inc. | Small Business |
Robert King
| 650 N. Rose Dr. | Placentia | CA | 92870 | (714) 408-8446 |
| FOI Group LLC | Small Business |
David Munson Jr.
| P.O. Box 671096 | Dallas | TX | 75367 | (214) 535-0710 |
| Gemini Enterprises, Inc. | Small Business |
Nezih Zeren
| 14550 Torrey Chase Blvd., Suite 600 | Houston | TX | 77014 | (281) 583-2900 |
| GeoMechanics Technologies | Small Business |
Nicky White
| 103 E. Lemon Ave Suite 200 | Monrovia | CA | 91016 | (626) 305-8460 |
| GeoTek Energy LLC | Small Business |
Dave Marshall
| 6170 Research Road, Suite 217 | Frisco | TX | 75033 | (972) 987-1310 |
| Geotemps, Inc. | Full |
Stephanie Dmytriw
| 970 Caughlin Crossing, Ste. 102 | Reno | NV | 89519 | (775) 746-7146 |
| Geothermal Development Associates | Full |
Martin Booth
| 3740 Barron Way | Reno | NV | 89511 | (775) 825-5800 |
| Geothermal Resource Group | Full |
Bill Rickard
| PO Box 11898 | Palm Desert | CA | 92255 | (760) 341-0186 |
| Geothermal Resources Council | |
Ian Crawford
| 2001 Second Street, Suite 5 | Davis | CA | 95618 | (530) 758-2360 |
| GeothermEx | Full |
Ann Robertson-Tait
| 3260 Blume Drive, Suite 220 | Richmond | CA | 94804 | (510) 527-9876 |
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