Home Green Products Guide Does solar power vent fans for attic work well?

Does solar power vent fans for attic work well?

I reside in Texas. And it gets ridiculously hot in the attic. I am trying to improve the ventilation of the attic but the problem is that in the summer the winds in my area are pretty much non-existent, so I would like powered vent fans for the attic but I am looking only for solar power vent fans for attic as power consumption defeats any savings in cooling. So can somebody tell me about various brands for solar power vent fans for attic in Dallas region? I would really appreciate your information regarding this. Thanks.