Come celebrate the promise of a sun-powered future at the Twin Cities Sun Day Festival at Graco Park, 810 Sibley St. NE, Minneapolis. Free performances include dances by the Minnesota Ballet Collective, the Lincoln Latino Club, Elizabeth Flinsch, OVA and singers Katy Vernon and Mayda, and jazz musicians, Selby Avenue Brass Band. There will also be art activities for young and old and opportunities to learn about how you can join in the clean energy revolution.