The annual innovators get to have a free booth at the fest, and one of them will be selected for a $750 cash prize. Judges have a say, but the public can vote online as well on the Greenfest website. Grid Magazine will host a special edition of Grid Alive with the Innovators on the Greenfest stage at the festival. The winner will be announced on stage at the conclusion of Greenfest. So here they all are: Bog Berry Drexel Smart House Lots of Power Paper Wool Postgreen Homes RAIR South Philly High School Greening Program TerraCycle