Co-generating wind power not financially viable

Colby Cosh links to a post at Sambal talking about the economics of domestic wind power:

Installation cost, including hardware and labor, is estimated at $25k. More than I have in my wallet, but that's okay, maybe we can finance it. It takes money to make money, and the power is free, right? So what the ROI, or, in terms the efficiency types like, the payback on that puppy? The calculator knows how much power costs here, so it can work all that out.

The answer is (drumroll please): 91 years. No typo, ninety-one. I'll be dead, and probably my kids too, and no doubt my house will have been gone for decades before it pays off. Oh yeah, not to mention the turbine itself, which has only a 25 year life expectancy.

Wow. That's even worse than I would have expected!

So much for the hopes of going "off the grid" with your own wind power generation capability.