| Himself - NYC Mayor's Office | Rohit J. Aggarwala | |
| Himself - Home Owner Richmond CA | Jerry M. Allums | |
| Herself - Home and Solar Roof Owner Richmond CA | Lela Allums | |
| Himself - Economist and Senior Fellow Tomales Institute | Peter Barnes | |
| Himself - CEO Virgin Group | Richard Branson | |
| Himself - Driver KKW Trucking | George Bravo | |
| Himself - President Earth Policy Institute | Lester R. Brown | |
| Himself - President & CEO Recycled Energy Development LLC | Sean Casten | |
| Himself - Lead Attorney NRDC | Ralph Cavanagh | |
| Himself - Garrison Commander - Garrison Fort Irwin Army Base | Col. Jim Chevallier | |
| Himself - Deputy General Manager Austin Energy | Roger Duncan | |
| Himself - Director of Energy and Environmental Programs Jaco Environmental Inc. | Michael Dunham | |
| Himself - Partner Peal Wind LLC | Cliff Etheredge | |
| Himself - Partner Peak Wind LLC | David Etheredge | |
| Himself - Partner Cook+Fox Architects | Bob Fox | |
| Himself - Senior Vice President / Chief Architect Rocky Mountain Institute | Greg Franta | |
