Check out Citysol festival, a festival about green energy, art, music, and education. My friends Angela Pablo (seen below in the photo, demonstrating the Electric Garden) and Megan MacMurray, former ITPers, have a project called Garden Electric that they created in a Tom Igoe's Sustainable Practices class.

You can learn more about solar and biodiesel power. If you bring your electric bill and switch to a green energy package with ConEdison Solutions, you can "receive free Brooklyn Brewery beer! ++ Bring your own reusable mug/glass and receive $1 off Brooklyn Brewery beer!"

Located along the FDR between 18 & 23rd streets - stuyvesant cove park (sat + sun will be better, as there's more programming on those days like music and workshops)