Basically my conclusion (in amidst a lot of embarrassingly arrogant stuff) was that maybe silicon PV was going to get a lot cheaper, because I looked long and hard for any fundamental cost floor within an order of magnitude or so of where we were, and I couldn't find one. But even if silicon PV didn't, there were several plausible alternative technologies that could move in to fill the gap.
As it turned out, silicon PV is now about 20 times cheaper than it was then.
Basically my conclusion (in amidst a lot of embarrassingly arrogant stuff) was that maybe silicon PV was going to get a lot cheaper, because I looked long and hard for any fundamental cost floor within an order of magnitude or so of where we were, and I couldn't find one. But even if silicon PV didn't, there were several plausible alternative technologies that could move in to fill the gap.
As it turned out, silicon PV is now about 20 times cheaper than it was then.