I’ve looked for graphs showing funding% over time, to see if funding happens mostly at the beginning, constantly or at the end. Didn’t find much. There’s this paper, but I didn’t want to dive that deep.
I also don’t see the NGO use case. A stationary windmill would just be much more reliable. Don’t know what a NGO could do that requires it to move and have power when resting. Maybe protecting animals from poachers, wildlife studies or something like that.
Maybe power on a sailing boat for cool drinks is a good use case.