Electric Vehicles EVs

Solar panels don't really have enough output to make a meaningful difference. Technology isn't good enough, surface area isn't very big, roof frequently points in the wrong direction or is obstructed.

https://lightyear.one/

It adds very little range (30km on a good day) for a big cost. As much as I like the idea of a solar car, I think in most parts of the world we’re better off putting the panels on buildings. No faff with having to park in the sun etc, and usually at a better orientation. The big nut to crack is energy storage, if you have a big cache battery or some such at home you don’t have to rely on the weather as much. E.g. charge from wind surpluses at night and solar surpluses whenever the weather allows.

There’s a Dutch startup that does variable prices for fast chargers based on energy availability, I think they also experimented with using cars as buffer batteries. The question is if the benefits of load balancing weigh up to the accelerated battery degradation though.