Yes of cource solar would be cool. But if it's in a location where you have power, that is going to be much more reliable. Even if you have power outages. If the voltage rises quickly as it usually does after a power outage, the node boots. But if the voltage rises slowly like with a solar panel and a battery, then this board will not boot. I had plans to deploy solar powered repeaters on a couple of mountain tops, but I'm still looking for hardware that would work more reliably.