This is not for that kind of setup, this is more of a button you press to get internet when you need it IMHO. It is 1 watt idle, so you need 24Wh to keep it running if there is no sun. On bad short days you might get 5% of solar power. A battery system might lose you 30% on that. Uptime is not primarily an technical issue, it depends on what your goals, skills and needs are.