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25kW 3-Phase Off-Grid Workshop Kit

25kW three-phase system delivering strong AC output with 48kWh storage for workshops and machinery-heavy homes.,
after rebate
FROM
$
$58-$64
Request a Custom Solar Spec
White SIG battery unit positioned next to a dark solar panel against black background
White SIG battery unit positioned next to a dark solar panel against black background

Power your life off-grid, in every season.

Summary

25kW three-phase off-grid system for homes or workshops with three-phase machinery: continuous 25kW AC, 48kWh battery, expandable to 50kW solar. Integrates with diesel generator and EV DC charger. Roof install 8-64k after rebates.

Target Profile

Home Owner with Hobby Workshop, Small Manufacturing Business, Large Family with Electric Vehicle, Property owners with three-phase machinery

White SIG battery unit positioned next to a dark solar panel against black background
System Information
Estimated Daily Energy Usage
~ 46.875 kWh
Battery Capacity
48kWh
48kWh Battery Bank: Also backed by a 10-year warranty.
Inverter Capacity
25kW
25kW Inverter: Comes with a 10-year warranty.
Solar Array 
25kW
25kW Solar Panels: Available in any brand of your choice. (expandable up to 50kW)

25kW Three-Phase Off-Grid Solar System – 25kW

This robust 25kW three-phase off-grid solar system is designed to meet the needs of homes or workshops equipped with three-phase machinery. The system delivers a continuous 25 kW of AC power, ensuring reliable performance for your equipment. With a substantial 48 kWh battery bank, it guarantees a steady power supply.

The system is also highly versatile and expandable. You can integrate a diesel generator for additional power support if needed. Additionally, it supports the inclusion of a DC car charger, enhancing its functionality for electric vehicle owners.

Shed roof installation $58-$64 fully installed after rebate. Ground Mount Install can be quoted additionally if required.

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100Up DesignedOff Grid Solar

Systems designed for a Ballarat winter

Sized for real-world conditions

Recommendations based your property

Advice based on your family, home and the way you live

Off-grid Redundancy experience

Technical experience that goes beyond standard solar installs
Off Grid Solar Specialist

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Regional Victorian Home Owners 100% Off Grid with properties just like yours

Solar Projects

A modern solar and battery setup with solar panels also functioning as carport cover
Target Property Profile

Energy Independence Optimision

Home Owner with Hobby Workshop, Small Manufacturing Business, Large Family with Electric Vehicle, Property owners with three-phase machinery

~ 46.875 kWh
Daily Demand Target
Full Occupancy Design for Long-Term Performance
We size for maximum bedroom capacity, not current usage, so your system supports future owners, growing families, and stronger resale value.
Redundancy Where Reliability Demands It
For larger or higher-risk properties, we can design dual or triple inverter redundancy to reduce single points of failure and keep critical loads running if one unit goes down.
Worst-Case Winter Solar Sizing 
We oversize arrays for dark Ballarat winter weeks, capturing enough energy in short sun windows to recover batteries fast.
Battery Autonomy for Consecutive Low-Sun Days
Every system includes roughly two days of battery reserve, so poor weather doesn’t force lifestyle cutbacks or generator dependence.
Learn more about our Off Grid Design Principals
Target Profile

Energy Independence & Protection

100% OFF GRID
Built to handle real-world energy demand with confidence. The 25kW 3-Phase Commercial System is designed for reliable, long-term off-grid performance
FROM
$
$58-$64
after rebate
Request Your 25kW 3-Phase Commercial Install Estimate
Pricing Subject to Site Inspection, Roof & Ground SURVEY
We Desgin, Supply & Install
100up will help you plan and pick the best system to match your needs - give us a call
Access to Government Rebates
Remote Monitoring & Support
Complete System Documentation
Proven Components & Accredited Installers
Off‑grid systems designed by 100UP and installed by SAA‑accredited electricians using CEC‑approved products.
10+ Years Precision Installation

Ready to Plan your25kW 3-Phase Commercial System?

Talk to us about your property, your usage, and your timeline.
Call us direct on 1300 489 152 or send a text to 0400 092 621 — real advice from real off-grid solar installers.
Request a Solar Consultation
Find Your Systems Match
Local Ballarat Team ●  10 years Over 120+ Installs 
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