PV Gap

Ross Said:

how come industries are not pursuing solar panels since there are millions of roofs in the planet?

We Answered:

You have the right idea, and we're moving towards that, but it's hard to see the gradual progress. Costs are still high, but coming down.

30 years ago, the IBM/370 at our college cost millions of dollars, but now, a PC with more computing power than that can't even be donated to an elementary school, because it's too weak. Solar cells were $100 / watt when I was in school, and now they're $4 / watt, and falling.

Believe me, all the manufacturers are quite conscious of cost. Whoever produces reliable cells at lowest cost will win.

Interesting article linked below about solar price trends.

Gene Said:

Where can I find some cheap solar cells?

We Answered:

Be careful going "cheap". Solar panels are so expensive that you want quality and long life. Go for the best and it will be cheaper in the long run.

Agnes Said:

Set up a cheap solar system to run a few 12volt lights off of. Can I use AA solar charging batteries?

We Answered:

you would need 8 AA batteries, and hood them all together to run 12v lights, but I am sure that it could be done.
or you could pick up a good car battery and do it easier.
maybe one from the wreaking yard.