Off grid system on fickle Hill Supervisor: Ben Scurfield

With off-grid systems a different type of inverter is required. An Outback inverter was used for this home. A charge controller is also included on the right side of the unit to ensure proper charge of the batteries. The batteries need to be charged at a certain rate and for a particular amount of time to keep the batteries from overcharging. A gas release tube is needed to prevent hydrochloric gas from entering the fuse box or room.

System overview:

  • .8 kilowatt
  • 4 panels
  • Inverter: Outback
  • Off grid system with battery back up
  • 120 volts


  • $15,000


  • 20% efficient panels
  • 91% efficient in conversion in inverter
  • <1% line loss
  • Additional 10% loss from chemical transition to and from batteries
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