I’m interested to see how this turns out, because I’m thinking this would significantly increase maintenance costs on those panels due to rocks being kicked up, vibration from the train, etc.

This doesn’t seem like it would work. Debris falling off the trains, dusty buildup, vibrations, rocks bouncing around the tracks; heck, even just wildlife crossing the tracks. So many things are gonna damage those panels if they’re just lying on the ground between tracks, and solar panels are extremely fragile.

I hope they have some sort of bullet proof glass or something over those panels. Probably going to need a special train to spray water over them to clean regularly, too.

I dunno about Swiss trains, but the tracks behind my house in America leave a thick black film on everything, and it’s very hard to clean by hand. I think they transport coal.

Good thing they stopped emptying train toilets on the tracks.

My first reaction was how stupid this is. Dirt, debris and other things will get on the panels and cause lots of problems, but after a few minutes I realized it’s actually quite brilliant.

There are three major costs of solar, the panels, the location, and the wiring + inverters. If the tracks are used as the wires (extremely low resistance paths back to an inverter), the location is wasted space so basically free, and the inverter can be placed anywhere along the path to remove the power from the tracks, the cost of this comes down to mainly the cost of the panel, which is actually pretty cheep these days.

The real challenges will be in cleaning & maintenance, vandalism, and modifying the track to limit the conductive paths (assuming they’re used for this).

Why not just make solar roofs over things like parking lots and sidewalks? That way it can provide cover and power, you can use off the shelf panels, and they are unlikely to get damaged.