Considering a couple of Powerwalls to deal with occasional 1-2 day post severe weather outages and the memory of Hurricane Sandy. We lose power a couple times a year due to tree limbs. When power goes out, I just want the fridge to keep running, some lights to work, charge cell phones/tablets and have the option to run laundry or central air or open the garage if needed. Right now I manage this through a couple UPS devices and a propane generator where I string extension cords all over the place. It would make sense to allow off grid recharge, but solar panels will greatly detract from the beauty of my home on the West/SouthWest facing front side. The only way I can place solar is effectively NE facing on the back of my home. And due to facing being less than ideal, I would seek the smallest possible system just to trickle charge the Powerwalls. This is because the 30% incentive is pretty attractive. Anyone done something similar? On a NE facing in the the NE of USA, what could a 1 or 2 KW sized system actually capture? Would I get some energy generation? Enough to be at all meaningful for replenishing powerwalls and justifying cost increase to obtain the 30% credit? Thanks!