Keep an eye on those zip ties. The sun will eat them. Don't expect more than six to eight months before you may have to replace them. Of course your mileage may differ.
The white zip ties are no good, the UV will destroy them in a few months. There are some that are much better in sunlight, most of the ones I have seen happen to be black.
I once noted on this thread, "It is not so important to have the quietest generator in the campground, but to NOT have the loudest".
That is like the old saying "I don't have to out-run the bear, I just have to out-run YOU". :)