this post was submitted on 09 Jun 2024
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No Stupid Questions

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Honestly it seems like a no-brainer to me to put a solar panel on the roof of electric cars to increase their action radius, so I figured there's probably one or more good reasons why they don't.

Also, I acknowledge that a quick google could answer the question, but with the current state of google I don't want to read AI bullshit. I want an actual answer, and I bet there will be some engineers eager to explain the issues.

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[–] [email protected] 66 points 5 months ago (11 children)

Doesn’t provide enough power for the cost of the cells, plus having to clean and upkeep them. And the more material you cover them with (to protect them; solar cells are INCREDIBLY fragile), the less efficient they are. I was on a solar car team in college and the cells are so fragile that to clean them, we had to use new microfiber cloths every time. Any dust would scratch and ruin them (which made it quite tough when I drove across the outback in the thing). We kept our cells completely uncovered because we needed maximum efficiency - but even with a super light carbon fiber solar car that’s got very minimal tire contact patches, specialized tires from Bridgestone, and a very aerodynamic shape (plus no amenities like A/C), I think our car could sustain something like 10-15 km/h on a perfectly sunny day in the middle of the outback. It just doesn’t add enough on a huge, heavy EV

[–] [email protected] 4 points 5 months ago (5 children)

On the other hand: most cars are not moved 23h a day. They just stand around.

A lightweight solar panel could be a worthwhile range extender in at least some climates.

[–] [email protected] 12 points 5 months ago

On the other hand: most trips are made to the exact same place, why move solar panels around when you could just leave them in place (especially if the car isn't moving for 23hr)?

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