A technician works on one of the wind turbines at Hawi Wind Farm. I believe this was just routine maintenance since on the following days I saw a similar sight at the other turbines.
I haven’t yet seen the operation from start to finish, but I suspect that inside the door at the bottom of the tower there’s a way of lowering a line to hook on the tool bags. Then I assume the technician has to climb a ladder to the top.
It’s pretty high up and there are strong winds, which is why the farm is where it is. So I hope the tech in the photo to the left doesn’t lean out too far. Probably not a job I’d be suited for.