This really appears to be viable, regardless of your politics, in certain states where the sunlight-days work out. I don’t live in one of those. One question mark I have is whether or not these panels will actually last as long as they are “guaranteed” to last. Sunlight and weather are brutal on equipment. I have a friend in Australia whose parents _make_ 3-600 dollars a year on electricity for their home, and this includes depreciation of the equipment!
It amazes me that you can get solar cells on eBay for very little money with unimaginable output and efficiencies that could not have been built by the entire resources of NASA, DOE, and the combined military of the US/USSR at any price whatsoever 25 years ago.
In the past solar cells were notorious for failing long before their cost was recouped....I am not aware of much improvement...but I could be wrong!!