Welcome! Idaho is beautiful. Visited Boise once for a conference about a decade back, would like to return and see more of it.
For some examples of how others are working at this, see my Urbana thread.
https://community.gotennamesh.com/t/urbana-illinois-now-a-gotenna-mesh-ambassador-city/1660
I’ve tried a lot of different things, nothing exotic really and towards the current end of the thread you can see what I’m working with now. Idaho is generally just a little farther north than Illinois, so solar solutions that work here should be in the ballpark for use there.
The key to this is reliable power in the form of a suitable battery pack (at least 4,000 mAh, preferably more), fed by about 6 watts or more of solar panel inside a weather-tight container. Node spacing should be on the order of about a half-mile radius. Access to a particularly high point can substantially increase range.