We have been following with interest our friends in Colorado as they build their solar-powered log cabin. Here is an update:
"Well... our solar powered log home is finally finished. The electric company called Aquila (in Colorado) offered up to a 50% rebate depending on the direct angle to the south exposure. They came out and inspected it to determine how much of a rebate that we qualified for. We fortunately qualified for the full 50% rebate. We are on-grid though so we are able to sell back electricity to Aquila that we don't need to operate the house on a monthly basis. We installed 18 solar panels, mainly because we couldn't afford any more than that even with the rebate. FYI- $30,000 before the rebate. (I will send you the two photos I have as soon as I download them from my camera)
Just for future info to those considering using solar panels: If possible, plan ahead by angling your home to take advantage of the full rebate amount."