I'm not sure about the specific power modes of Rasp Pi except I hear they're barebones and kinda bad. But in any case, servers cannot sleep. Only clients can.

I'm not sure about the specific power modes of Rasp Pi except I hear they're barebones and kinda bad. But in any case, servers cannot sleep. Only clients can. Maybe the software architecture of this SolarPi should be rethought. Or maybe perpetual power needs to be more carefully figured out here so that the Pi can truly function as a server.