Wind turbines for home roofs no good?

No good for your roof?

Does it make sense to put a wind turbine on your roof?

Experts don't agree.

"Small wind doesn't make economic sense," says Paul Gipe, who has written several books and commentaries on wind energy," because of reliability for example

On the other hand, "Mick Sagrillo, a small-windmill expert for AWEA, agrees with Gipe that some turbines have proven unreliable, but he says that well-built ones can last 20 years or more. "

"It's like you are prepaying your electricity bill for two decades," Sagrillo said.