If you mine with solar power on batteries you will almost always come out worse off than if you just bought the power at residential retail rates. You have to factor in wear and tear on the batteries - which by itself can be greater than just buying the electricity. On another note - if mining on solar power skip the inverters and power supplys and use direct current DC converters.
Great in theory, hard in practice due to the wire gauges involved in carrying the current to your miner. Math: 13.5Th at 0.098w/GH = 1323 watts at 12V = 110.25 amps. Would you really be willing to run 00 gauge wire to each miner and then break that down to (9) 6-pin connectors?