Facetious, obviously, but any homeowner knows that stuff wears out and
has to be replaced. IMHO, estimated payback periods do not consider
this in their calculations.

And, a home powered by solar would cost a chunk of change to power just some
light bulbs, and a small TV. If you want microwave, clothes dryers, ovens,
toasters, and other stuff, you will have to fork out substantially more in
the beginning.

Amortized over time, it is worthless, unless you want to live in a cave with
one small light bulb.

Steve