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Chapter 1 - Welcome
8.5 - Power Flow Modes
The SolarCity H6 inverter operates in several power modes, as described in the following
sections.
8.5.1 - PV to Battery Pack
This is a factory-default mode that the inverter can automatically select when appropriate. If
the inverter is receiving power from both the grid and PV array, then it will use that PV energy
to charge the battery pack first. Any power left over from charging the battery pack will be
fed back to the AC grid. If the inverter is not receiving power from the grid but is receiving
enough PV energy to support the protected home loads, then it will support those loads first
and use any leftover energy to charge the battery pack.
8.5.2 - PV to AC Grid Output
This is a factory-default mode that the inverter can automatically select when appropriate. If
the inverter is receiving power from both the grid and PV array, then it will use that PV energy
to charge the battery pack first. Any power left over from charging the batteries will be fed
back to the AC grid. If the inverter is not receiving power from the grid, then it will not feed
any power to AC grid output.
8.5.3 - PV to Protected Home Loads
This is a factory-default mode that the inverter can automatically select when appropriate.
During the day, if there is enough PV energy available, the inverter will power the protected
home loads first and use any leftover power to charge the battery pack. At night, or if PV
power alone is not sufficient to support the protected home loads, then the inverter may
draw power from the battery pack to supply the protected home loads.
8.5.4 - Battery Pack to AC Grid Output
This is a special mode that can only be activated remotely via the ZigBee communications
channel because it requires approval from the local jurisdiction and/or utility. The inverter
can only supply battery pack power to the AC grid when grid power is available. The amount
of battery pack energy fed back to the grid can be controlled. If the inverter loses
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