One does not need to be a fan/recurrent viewer of LTT to be curious about a technology. And while most of the technical information sucks, the introductory level stuff can be useful for low and middle-end enthusiasts.
I wonder how much sunlight we can convert into stored energy until we are non-trivially detracting from the amount of energy that reaches the earth’s surface.
It’s probably an absurd proportion of solar panel coverage.
The holes at the bottom were probably tacked into a strip of leather and secured, and I’d imagine there’s some sort of stud or hook on the backside of the buckle.