Solar panels will be rolled onto Swiss railway tracks ‘like a carpet’
www.euronews.com
After long delays, the removable PV system will finally be tested on a western track next spring.

I’m all for putting solar panels all over the place, but won’t these get dusty and oily and need loads of cleaning after trains pass over?

Also, costing €623,000 over three years sounds rather expensive for just 100m (although that roughly equates to 11KW).

  • Swedneck@discuss.tchncs.de
    26·
    11 days ago

    have we run out of convenient places to put panels? that’s news to me, last i checked we still had a hilarious amount of free roof space and stuff like parking lots where we can just slap up the panels.

    • qupada@fedia.io
      14·
      11 days ago

      Putting a solar roofs over any open-air carpark you happen to own is just a hilariously easier option. Hell, you could erect these OVER the train tracks.

      https://greenox-group.de/photovoltaik-carport/ (Article is in German, but it’s really more around the picture)

      According to a completely un-sourced picture I found online, one carpark (in the USA) is typically around 5.5 x 2.6m, so if you had even 50 carparks on your site you could have ~715 square metres of panels. More, if you figure a way to cover the aisles between the rows of carparks too.

      At the top end of all applicable figures (panel efficiency, solar irradiance, inverter efficiency), that could net you ~160kW at solar midday.

      Now on the other side, standard-gauge railway is around 1.4m wide, and maybe you could cram a 1m width of panels between the rails.

      That sounds like a lot - 1000 square metres per kilometre, and there are thousands of kilometres of railway lines out there - but it’s harder to install, harder to service, gets dirty faster, is liable to get damaged, and now you have to figure out how to extract power from somehing a kilometre long, instead of an area that could be a square only around 35m (~115’) on a side (for the above 50 carparks).

      I know which one of those I’d want to run the cables for.

      As has been pointed out many times when this dumb-ass idea comes up, only once you’ve exhausted every other possibility (carparks, rooftops, putting panels ABOVE roads/rivers/canals/cycleways/railways) and have literally no other viable installation locations, then we can talk.

      • kokopelli@lemmy.world
        7·
        10 days ago

        My dad worked with a guy who is designing a system like this and it makes all the sense.

        1. you shade the parking spaces

        2. you absorb less heat into the ground than tarmac

        3. free energy

        4. direct panel-to-car charging for EVs

      • humanspiral@lemmy.ca
        11·
        7 days ago

        solar canopys are actually quite expensive. Needs a very sturdy structure to hold panels high up and deal with wind loads. Solar panels are getting so cheap, that it becomes very reasonable to lay them on the ground instead of optimal angles, higher up.