For comparison, my rooftop solar array, with around 16 full-sized panels (~6kwp) produces just under 2 miles per hour in my electric car (around 3.3kwh/mi). Or in real life, takes about 2 fully sunny days to produce the power to charge the car.
Comment on Why don't electric car manufacurers put solar panels on the car roofs?
forgrytaboutit@lemmy.world 3 weeks ago
What I have seen previously is that the amount of energy you get from the solar cells that you could fit on the top of the car is really small compared to what it takes to charge the battery.
Since there is minimal benefit, and it’s costly to include them and wire them to the battery, it hasn’t been viewed as worthwhile.
Bigfish@lemmynsfw.com 3 weeks ago
BlameThePeacock@lemmy.ca 3 weeks ago
What kind of ev are you driving? That’s insanely high energy usage.
My EV gets about 6km per kwh (around 4 miles)
Guest_User@lemmy.world 3 weeks ago
You get 4 miles per kwh and they get 3.3 and you call that insanely high? The 2.5-4 mile to kwh is really standard for EVs. I don’t think the 3.3 is outside of the norm at all.
Phil_in_here@lemmy.ca 3 weeks ago
I don’t know anything about EV efficiency, but the rates are inverse, so they are drastically different. 3.3kwh/mile 4 miles/kwh or 0.25kwh/mile
tyler@programming.dev 3 weeks ago
Fish reversed the numbers. It should have been miles per kWh
Deestan@lemmy.world 3 weeks ago
Spot on.
Rough summary of when it is energy and effort efficient: xkcd.com/1924/
whodatdair@lemmy.blahaj.zone 3 weeks ago
Yeah this is what I’ve heard as well - aging wheels goes into it a bit in this review of a concept car, kinda neat - it has pedals like a bicycle but the energy they add is a tiny fraction of what the thing needs to move.
youtu.be/DDmeqLEB9c0
NABDad@lemmy.world 3 weeks ago
Are you taking about the Aptera from the video you linked?
If so, the Aptera doesn’t have pedals like a bicycle. It’s a fully electric vehicle (or it will be if it reaches production).
whodatdair@lemmy.blahaj.zone 3 weeks ago
Ah crap, you’re right - that’s another video of his, apologies