I was thinking about installing a solar powered attic fan. In doing some research, I found an article that basically says, don't! The article states that attic fans draw cool air from the house to cool the attic and they can pull dangerous gases from appliances like water heaters, therefore, they aren't an effective way to help cool your house. He also says good insulation will do the job just fine.
I'm sure that there are some of you that are much more experienced than I in this field and I'm hoping that you will chime in here. I live in So Cal, where heat is an issue a good part of the year. Thanks for your collective wisdom.