Here's an update to Mary Gauthier, who is still playing. Apparently the power didn't get pulled because she was going over, but the power went out.
Over at the Mustang Stage, Truth and Salvage Co. also went acoustic. It's funny because they're probably the most rock-driven band in there all day. Everyone else is more acoustic and bluegrass.
At 1:25 the power is back on at the Palomino Stage and Gauthier is doing one more song with the power back on.