Following up on the previous post regarding SolFocus and Xerox PARC, here are two good columns on the same topic (actually, here and here), with additional information and thoughts.
[Update: For a fantastic resource, see Xerox PARC's videotaped technology speaker series, many of which are on cleantech topics]
PS... On the topic of the broader cleantech investment thesis, there was this story today. "This is the kind of study that should make people stay awake at night wondering what we're doing to the climate, how we're shaping the planet for future generations and, especially, what we can do about it."
