The concept is nice but making it to market will still be tough. As far as windows and that type of small scale application, I hate to be a debbie downer but I

The concept is nice but making it to market will still be tough. As far as windows and that type of small scale application, I hate to be a debbie downer but I think the cost of MPPTs (Maximum Power Point Trackers), transformers, inverters and storage shouldn't be overlooked. Most of those components become more cost effective with larger PV installations and 6% (or even 10% if they actually get there) means that a few windows probably won't really bring the scale that makes the rest of a PV system a cost effective solution. I do see this as a cachet product though, maybe in the same way that the solar-prius uses its solar to run fans...Hopefully the efficiency goes up and it can be brought to market. If it really can be sprayed on then any and every surface has potential (yuck yuck yuck).