[quote=ucodegen]
Already here.. Sun Tech Power.. Efficiency will always be a problem. The ‘window’ types will be less efficient because they are passing through light that might normally be converted.[/quote]
I wouldn’t say it will always be a problem. Right now, the efficiency is in the teens and twenties. I think, when solar tech matures, we’ll get much higher efficiency numbers. We’ll get to a point where it’ll be much much cheaper and even the cheapest product will be able to satisfy most people’s needs. It was only about 10 years ago where a color scanner was $1000, now it’s <$100. It was only about 10 years ago where we were using 166MHz CPU w/ hard drive space around 80MB. Now, we're talking about 3GHz CPU and 2TB. I full expect solar tech to have the same exponential improvements.