From the Facebook event page:

A Free + Unplugged Show Featuring:

1 – 1:30 p.m. Herro Sugar
1:30 – 2 p.m. The Mothball Fleet
2 – 2:30 p.m. Paul Ivey & The Rubes
2:30 – 3 p.m. Bermuda Triangles
3 – 3:30 p.m. The Milkstains
3:30 – 4 p.m. Tyrannosaurus Awesome
4 – 4:30 p.m. The Garbers
4:30 – 5 p.m. Peace Beast
5 – 5:30 p.m. THE DOG SHOW (not a band, a real dog show)
5:30 – 6 p.m. Broken Pony
6 – 6:30 p.m. Black Liq
6:30 – 7 p.m. Nervous Ticks

Here’s some footage from 2010 (by Silver Persinger):

The Diamond Center: http://vimeo.com/14978251
Nervous Ticks: http://vimeo.com/12815648

The power plant looks like this:
http://www.youtube.com/watch?v=MnRt_W5F_jQ

Fun for all. No plugging in allowed. Bring your dogs and smiles. PICK UP YOUR TRASH, TOO.