P-O-P, I expect that the real cost has been calculated to be lower than the cost of installing grid power (and the associated metering). ...plus, it makes some feel good. (and the birds have a nice place to perch. . .and crap. ...oh sh:t - there goes the real cost savings.)
. ..edit: I mean .. .uhm ... time for the development of a new solar-panel maintenance crew. (so we can realize the great savings as formerly calculated.
