This quote is also a red flag for me:

"For the last six months, driving home, I've been looking at leaves, and saying, 'I own you guys now,'" Nocera said.

Nocera sounds a bit manic.

I would also point out that the idea itself - using peak solar to produce hydrogen which could then be used at night - is not new. My friend Jerry Unruh suggested this to me - and I wrote about it here - almost two years ago:

http://www.theoildrum.com/story/2006/12/19/164011/04

Nocera seems to be suggesting that he thought up the idea.

CSP can also be used to capture solar, store it for a few hours (in the form of heat), and then use the heat to generate electricity at night.

Yeah, I agree. I'm still struggling to see what is the connection between photosynthesis and electrolysis of water. This is beside the fact that he comes across as a total nut with a statement like that.