Does the federal solar system tax credit also apply to RVs? I'm fairly confident that the tax code considers RVs and boats residences, as you can deduct loan interest on such vehicles, so why wouldn't the solar credit also apply? IIRC, the credit is for something like 30% of the price of the system & installation. And that's a CREDIT, not a deduction, so it's like getting a 30% refund on your solar system.
For those who are interested, check out the relevant IRS publication:
http://www.irs.gov/pub/irs-pdf/f5695.pdf
It appears as though travel trailer installations qualify.
Dave