How to extend wifi outdoors?

I want to setup a camera system outside. I have a large 20 acre property and was looking at solar powered cameras. Only problem is that the network won't reach as far as I need it to.

I can't find any solar powered wifi repeaters. Do they make such a thing?

Has anyone else successfully extended wifi range outdoors? I need about .17 miles range in 1 direction through some trees. Possible or not?

Edit: please don't go into detail about cell/4G cameras. I could do that if necessary and am familiar with it, I am trying to figure out if the wifi is an option because AT&T rips people off big time for a simple camera to be added to their network and Verizon doesn't get any service here. Thanks!