the split air conditioner at the pre inverter stage. nothing else in the home would use the DC.
This idea is minimize the infrastructure, and maximize the benefit for a simple solar install.
So 6, 220 watt panels with 4, 12 v deep cycle batteries, (I had one of the schematics that had the input voltage
to the inverter at 48 vdc.)
The panels shade the sunny portion of the roof, and the 11 kwh per day of power remove heat during the hottest
part of the day.
Concepts like this were not even feasible two years ago, but prices have come down.
If people want solar to work it has to provide a clear benefit to someone who worries more about their
wallet, than their environmental patch on their sleeve.
I think some environmentalist have hurt alternate energy, by their willingness to pay more.