EU Generator maintenance?

Something so that the long term slow generators aren't so prone to becoming time/bed = power with a single bulk investment?
Namely, some ideas being:
Water Mills: You'd have the surface of it be "overgrown with barnacles". This'll just gradually block it off and make it slower, should take a spectacularly long time to form, and take a quick second to clean out?

Wind Mills: I'm not sure, greasing? Perhaps just attracting lightning somehow would be a nice way to make "maintenance" as it is, though I don't know what else would be fitting.

Can't think of much at the moment for geogenerators, same with coal generators, which may not even need maintenance as it is. Nuclear reactors already have maintenance in spades.
Any other ideas? Do these seem reasonable?

Oh, woops. My bad.

EDIT: Though, admittedly, that topic speaks on machines and their breaking down, while here I'm suggestion basic maintenance and decrease in efficiency without it.
Speaking of which,
Solar panels: Accumulate dust, which hinders operation. First level of dustiness is invisible, and reduces efficiency by a tiny bit, as to make a player more inclined to wash off their Solar panel arrays every so often. Could perhaps get occasionally scratched and more rarely broken when tread upon by mobs/players without rubber boots.

Thoughts and ideas?

I'm deriving the water mill clogging with easily cleanable barnacles idea from something I watched the other day. Was a show that explained what would happen if all humans suddenly vanished, and one of the last places to still have electricity after everything else would be around hydroelectric dams, namely hoover dam of interest. It wouldn't stop because of breaking down from no maintenance, rather, it would actually stop because it got stopped up with barnacles, causing it to gradually shut down if it weren't cleaned out.
Plus, there's gotta be something to prevent water mills from becoming no effort power sources after it is set up.

Another idea for water mill barnacles: Water Mill Cleaning/All Purpose Cleaning laser. Zap in a sweeping motion to clean out solar panels and water mills free of debris rather than having to do so by hand at very little EU cost! Hayo!

But these are just ideas yeah, I like the idea about watermills getting pressure, perhaps increase it's efficiency with that proximity to lava as well? Would make some nice risky builds with that.