Custom 3-Phase Off-Grid Systems – Scalable, Redundant Power for Bigger Jobs

Designed for rural and commercial properties that need serious off-grid capacity and true 3-phase supply. With inverter sizes from 10kW to 25kW (parallel-capable), we can build anything from a 10kW starter system up to 100kW+ for large properties. Each inverter-battery stack runs independently — so if one unit ever goes offline, the rest keep powering your site.

  • Solar panels: 10kW to 100kW depending on load and rebate eligibility.
    • Systems up to 100kW qualify for STCs (small-scale rebate)
    • Systems over 100kW fall under the LGC (Large-scale Generation Certificate) scheme
  • Inverter: 3-phase off-grid inverters in 10, 15, 20, or 25kW sizes
    • Fully parallel-ready — add more units as needed
    • Allows 100% phase load imbalance — perfect for rural sites with uneven 3-phase loads
    • System redundancy built-in — each inverter and battery stack runs independently, so your system keeps going even if one part fails
  • Battery: Scalable Sigenergy lithium battery banks — from 16kWh upward, matched to each inverter stack
  • Monitoring: Online platform for full system and battery tracking
  • Backup generator: Sized based on total load — we’ll help you spec it right

💰 Custom pricing on request
Final quote based on system size, battery capacity, and property inspection.

This is our most flexible and resilient off-grid system — ideal for farms, workshops, off-grid businesses, or large homes where uptime and load capacity really matter.

Need serious off-grid power? Call or text 0400 092 621 — we’ll design it properly.

Related Systems

Small 3-Phase Off-Grid System – Reliable Power with 3-Phase Capability

4–20kW solar, 10kW 3-phase inverter (100% imbalance support), 16kWh battery. From $26–34K installed.