Don't know much about it but looks interesting I thought I should share it.
"Sustainival is THRILLED to be bringing the world’s first green midway to Calgary this September during the Beakerhead festival. Come on down and have your world rocked by a full-scale Carnival midway powered entirely by renewable energy."
http://sustainival.com/events/beakerhead/
http://blogs.calgaryherald.com/2013/08/14/a-100-green-midway-is-coming-to-calgary/
And there is a deal for tickets @ livingsocial.com (signup required) , $25 ($51 value) for two one-day passes.

