The issue is that even the same brand can have multiple USB fingerprint scanners, which may not all work.
From a 4y old reddit thread some person found a fingerprint scanner which worked, but some other person who had a similar one didn't get it ot work.
https://www.reddit.com/r/linux/comments/gc8a2e/i_finally_found_a_cheap_usb_fingerprint_reader/
Well the issue with renewable power like wind and solar, is that they are not stable.
Having a battery in order to store the energy and release it when the demand is higher than production is one part of the solution.
But what happens when there wasn't enough solar and wind to replenish the batteries if those batteries aren't enough for the demand? Power shortages, which are pretty bad to get.
One of the solutions to this is natural gas for a simple reason : it's very fast to start generating power or to stop. It's also not very expensive, at least when there isn't a war... The co2 equivalent emissions aren't as high as coal either.
Nuclear power on the other hand is very hard to stop. Having a surplus of power on the grid is also very bad. Some of it could be used to recharge the batteries, but there would be some loss at some point.