| A Circle of Ten, Inc. | Jacksonville | TX |
| Aarios International | HorseshoeBay | TX |
| Advanced Enviro. Recycling Technologies | Springdale | AR |
| Advantage Metal Roofs, Advantage Constr. | Austin | TX |
| Air-Stream Services | San Antonio | TX |
| Alamo Area Council of Government | San Antonio | TX |
| Alford Steel Homes, Inc. | Marble Falls | TX |
| American GreenFuels, LLC | Houston | TX |
| Austin Energy Green Building | Austin | TX |
| Austin EV and other Texas EAA Chapters | Austin | TX |
| Austin Solar AC | Austin | TX |
| Big Grass Bamboo | San Antonio | TX |
| BioFoam Insulation | Spring Branch | TX |
| BluAfrican | Austin | TX |
| BP America, Inc. | Austin | TX |
| Central Texas 4-H Robotics | Pflugerville | TX |
| Central Texas Clean Cities | Austin | TX |
| Central Texas Metal Roofing Supply Co., Inc. | Austin | TX |
| Cinco Solar Inc. | Spring Branch | TX |
| Clean Energy Services, LLC | Manchaca | TX |
| ClimateMaster Windows | Mason | TX |
| CM Artisans LLC | Burleson | TX |
| CobraHead LLC | Cambridge | WI |
| Damon Berry Distribution & Application | Florence | TX |
| Design~Build~Live | Austin | TX |
| Earth Shelter Living | Bastrop | TX |
| EarthCo Building Systems, Inc. | Ranger | TX |
| Ecologenics DBA Save Power Texas | Driftwood | TX |
| Eco-Wise | Austin | TX |
| EH Systems LLC | New Braunfels | TX |
| Electric Power Engineers, Inc. | Waco | TX |
| element 7 concrete designs (sic) | Burnet | TX |
| Environment Sensitive Pest Control | San Marcos | TX |
| enXco | N. Palm Springs | CA |
| Evolution Biodiesel LLC | Huntsville | TX |
| Exeltech | Ft. Worth | TX |
| Fredericksburg Farmers Market | Fredericksburg | TX |
| Fresh | Weatherford | TX |
| Gary Balluck & Assc. LED & Solar Lighting | Houston | Tx |
| Green Mountain Energy | Houston | TX |
| Greenling Organic Delivery | Austin | TX |
| GreenSwitch Team | Austin | TX |
| Healing House - Threestrand - EcoQuest | St. Charles | MO |
| Hill Country Alliance | Bee Cave | TX |
| Holistic Management International | Bangs | TX |
| Homes For4Ever | San Antonio | TX |
| Innovative Water Solutions LLC | Austin | TX |
| JOLEE-Enterprises, LLC | Kerrville | TX |
| Mason Greenstar, Inc. | Mason | TX |
| Meridian Energy Systems, Inc. | Austin | TX |
| Mike Pilley Enterprises | Marble Falls | TX |
| Moore Energy, Inc. | Devine | TX |
| MTH Greenhomes, LLC | Austin | TX |
| Nana's Ice Cream | Llano | TX |
| Navajo Grill | Fredericksburg | TX |
| North Texas Renewable Energy | Fort Worth | TX |
| Northern Power | Barre | VT |
| Northern Sun | Minneapolis | MN |
| Pedernales Electric Cooperative | Johnson City | TX |
| Pioneer Water Tanks | Austin | TX |
| Public Citizen/SEED Coalition | Austin | TX |
| Pure Quality Water | Bulverde | TX |
| Rainfilters of Texas LLC | Austin | TX |
| Reclaimed Space | Austin | TX |
| Renewable Energy Demo. Trailer - TSTC | Waco | TX |
| REVOLT Custom Electric Vehicles | Austin | TX |
| Sierra Club, Lone Star Chapter | Austin | TX |
| Sierra Homes | Fredericksburg | TX |
| SMU Geothermal Lab | Dallas | TX |
| Sola-Lite Incorporated | San Antonio | TX |
| Solar Oven Society | Marble Falls | TX |
| Solarplex of Texas | Comfort | TX |
| Solluna Builders | Austin | TX |
| South Texas Renewable Energy | McAllen | TX |
| Southwest Septic Loo, Inc. | Elgin | TX |
| Standard Renewable Energy | Houston | TX |
| State Energy Conservation Office | | |
| Sunrise Solar | Canyon Lake | TX |
| Sunrise Solar of Dallas-Ft. Worth, Inc. | Arlington | TX |
| Sunsational Solutions | Cedar Park | TX |
| Tanner Foods | Stonewall | TX |
| Techsun Solar | Martindale | TX |
| Termimesh, LLC | Austin | TX |
| Texas Nature Project | Mason | TX |
| Texas Organic Farm Gardeners Assc. | Corsicana | TX |
| Texas Rainwater Systems | Kerrville | TX |
| Texas Solar Cookers | San Antonio | TX |
| Texas Solar Energy Society | Austin | TX |
| Texas Solar Power Company | Austin | TX |
| The Cliffs at Water Ridge | Austin | TX |
| The Sustainable Concept House | Boerne | TX |
| ThinkSolar | Oakland | CA |
| Today's Water | Boerne | TX |
| Woodwright Construction | San Marcos | TX |
| Xella AAC Texas, Inc. | Cibolo | TX |
| Zhi Tea LLC | Austin | TX |