this post was submitted on 31 Oct 2024
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There's something that people really fail to grasp with solar, and that's the fact there is bugger all energy in the sun, and you need a huge surface area to get any meaningful energy.
A home solar array often takes up a significant chunk of the roof area, and the amount of surface area a car typically has means that even perfectly efficient solar panels wouldn't collect enough energy to significantly contribute to the vehicle's range.
There's a good reason why vehicle manufacturers don't bother adding them.
Their tech isn't just the solar, they've optimized the car solely for efficiency. They claim their car can get 10 mi/kwh, so with 700W of solar panels they can get up to 40 miles of charge per day with just the solar. By contrast, the solar panels that are available on the new Prius get 4 miles of charge per day.
Now that their production-intent vehicles are just starting to be built up, I'm eagerly awaiting their actual test data that hopefully verifies their claims on efficiency, range, crash safety, etc. but we'll see ๐ค I really hope they succeed.
Yes, the aerodynamics + solar panels is what makes this vehicle enticing, not just the solar panels alone.
Solar panels are also added weight, which reduces range. Any way you look at it, it makes more sense to have the solar panels at a base location you go back to.
I guess an RV, or a camp trailer, makes sense to have panels on it, but that's about it
There's also things like Sentinel mode on Teslas that use power.
My main gripe is people think a solar car will never need to be charged, or only on trips, and that's just not the case.
Aptera claims to be able to get 40 miles a day via solar. Most people drive less than that per day.
Solar panels are incredibly thin and light. There is no reason not to include them.
Price. Large standardized panels are cheaper. Until you cover static otherwise unused space with solar, there's no way this car is a better use of money.
There is good amount of energy in the sunshine. The output of solar arrays struggle to make big power out of small surface areas because we haven't figured out how to get more than 20% of the power that hits the panel. If they do get 20% or more, it's been with very expensive and fragile panels.