"The pilot project, which is expected to be completed this summer at a cost of $560,000, will see Sun-Ways use a regular train to lay down 60 solar panels on a 140-foot stretch of railway track near the city of Neuchâtel"

it's not like all of Switzerland is doing this on all rail tracks. It's 60 small panels. A tiny experiment, nothing more. Who says they are "instead of, I don't know, people's roofs"?