Off-Grid Home Kits

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4kWp Solar Off Grid Home Kit

Off-grid solar kit to power AC loads and incorporate back-up diesel generator.


  • SMA Sunny Island battery inverter/charger
  • 4.48kWp PV system and solar inverter
  • Battery
    • ~26kWh battery (~13kWh usable at 50% DOD, C20)
    • 3200 cycles to 50% DOD (depth of discharge)
    • 10 year warranty

More information

Consider adding:

  • FCS-1-B frequency controlled switch to turn loads on when battery is fully charged and solar generation is being regulated
  • PV-MAX3UK4KW(N) ground mount for solar panels
  • Back-up generator e.g. diesel (not supplied by us) to provide power when batteries are low
  • C/O-SW4 change over switch to bypass Sunny Island but keep generator connected to loads
  • BAT-MAIN Battery Maintenance Kit
  • BAT-FL15 Battery fluid level indicator for Rolls 5000 series
  • LBL/16 Battery Area Warning Sign

Additional components also required:

  • Mounting system for solar panels (see example above)
  • AC wiring and distribution
SMA Sunny Island Off-Grid FiT Kit Sunny Island 6.0-8.0H Single Phase Schematic
Product Code Description Retail Price
(ex VAT)
SI-OFF-GRID-HM1 4kWp Solar Off Grid Home Kit £9,473.06