We need a new electric fencer for all of our new fence, and as stated on another post, the insurance company wants it installed outside. I am relying more on the electric than before, and I am concerned about a power outage if we aren't home to start the generater. Solar fencing would eliminate that worry, plus it is designed to mount outdoors. But we live in Michigan, and sometimes especially through the winter months, we don't see a lot of sunshine. Would the solar fencers be able to collect enough energy to operate efficiently, or would I have to have a back up fencer?