▲ 348 ▼ Sweden is testing a semi-truck trailer covered in 100 square meters of solar panels (www.popsci.com) submitted 3 years ago by L4s@lemmy.world [M, B] to c/technology@lemmy.world 68 comments fedilink hide all child comments Sweden is testing a semi-truck trailer covered in 100 square meters of solar panels::A Swedish manufacturer wants to harness green energy from a cargo trailer's free real estate.
[–] kent_eh@lemmy.ca 7 points 3 years ago (2 children) It makes more sense than solar roads. permalink fedilink source parent hideshow 2 child comments replies: [–] n0m4n@lemmy.world 4 points 3 years ago* (last edited 3 years ago) (1 child) Solar ditches make more sense. Carrying solar panes add weight and air resistance. The trailer area is 416 ft which can hold ~33 panels if panel configurations are optimized for a trailer. Weight will be 3000 lbs, which cuts the tare payload by 6%. This is not enough electricity to run a semi with two drivers splitting driving responsibilities, running day and night, and in weather that does not have power for the cells. Trains are the most efficient system that we have. I wonder how the math would work for trains? I expect that it would be a net gain, but the added complexity of connecting and disconnecting for each car as the cars get switched in yards would be a nightmare. Once travelling, there is little braking and acceleration, which lowers the power demands. permalink fedilink source parent hideshow 1 child comment replies: [–] bitwolf@lemmy.one 6 points 3 years ago Yes but sadly no one wants to talk about trains. It's really killing the Utopian dreams of public transport permalink fedilink source parent
[–] n0m4n@lemmy.world 4 points 3 years ago* (last edited 3 years ago) (1 child) Solar ditches make more sense. Carrying solar panes add weight and air resistance. The trailer area is 416 ft which can hold ~33 panels if panel configurations are optimized for a trailer. Weight will be 3000 lbs, which cuts the tare payload by 6%. This is not enough electricity to run a semi with two drivers splitting driving responsibilities, running day and night, and in weather that does not have power for the cells. Trains are the most efficient system that we have. I wonder how the math would work for trains? I expect that it would be a net gain, but the added complexity of connecting and disconnecting for each car as the cars get switched in yards would be a nightmare. Once travelling, there is little braking and acceleration, which lowers the power demands. permalink fedilink source parent hideshow 1 child comment replies: [–] bitwolf@lemmy.one 6 points 3 years ago Yes but sadly no one wants to talk about trains. It's really killing the Utopian dreams of public transport permalink fedilink source parent
[–] bitwolf@lemmy.one 6 points 3 years ago Yes but sadly no one wants to talk about trains. It's really killing the Utopian dreams of public transport permalink fedilink source parent