[Aurel]

Originally Posted by tcar

Is that true?

So, $500 for enough panel to power a single 100 watt bulb.

Payback would be, what, 10,000 years?

Good idea, if true.

Now, with the cost down to $1/W, and using white LED lighting that consumes 20W for the same light output as a 100W incandescent, your cost is down to $20.
This illustrates that the solution will come not only from cheaper pannels alone(which polysilicon is very close to now), but their combination with other innovations. The energy problem must be adressed at both ends: production and consumption.

Aurel