A silly idea I got while browsing a recent topic:
Make your preferred wind energy harvesting system, put it on or under a hydrogen balloon, raise the balloon to your altitude of choice and tether it to the ground.
The new idea, for me though I know the idea has been around, is to generate methane or hydrogen while airborne. That eliminates the need to constantly raise and lower batteries, or use a heavy electric cable, or use an unproven rope drive system. Instead you would have a supply of gas containers that you would send down, and you would periodically send extra gas containers up.
The enabling technologies for this would be a relatively light yet high capacity apparatus for making methane or hydrogen (from air, CO2, hydrogen, water, or a combination of the above), a good hydrogen balloon that doesn’t allow much hydrogen to escape, and of course your AWE harvesting system.
Alternatively, you could ground your system every time your gas containers (or now also batteries or other https://en.wikipedia.org/wiki/Energy_storage medium) were full.