Large metal shed with complete rooftop solar panel array and construction equipment on rural property surrounded by trees
Sizes and Prices

The Cost of a 20kW Off-Grid Solar System

20kW off-grid solar system typically falls within the range of $40,000 to $60,000.

Solar technician in safety gear standing on large commercial rooftop solar panel installation in Ballarat
BY: Fedor Torgovnikov
Updated July 21, 2026
Published March 21, 2024
Large metal shed with complete rooftop solar panel array and construction equipment on rural property surrounded by trees

Are you considering going off-grid with solar power in Australia? A 20kW off-grid solar system can provide energy independence, and understanding the cost is crucial. While prices can vary, a 20kW off-grid solar system typically falls within the range of $40,000 to $60,000.

Off-grid solar calculator · 100up.com.au

Find your off-grid system size.

Answer a few questions for indicative solar, battery and inverter sizing plus a matched system recommendation.

1. How many people?
2. Ballarat region?
3. Property type?

Home uses single-phase; workshop uses three-phase.

Your recommendation

Calculate to see your matched system recommendation and sizing.

Factors Influencing the Cost

  1. Battery Storage: Off-grid systems rely on batteries to store excess energy for cloudy days or nights. Battery type and capacity impact the cost.
  2. System Components: The quality of solar panels, inverters, and other components can influence pricing. Premium components may come at a higher cost but offer better efficiency and durability.
  3. Location: Regional factors like labor rates and incentives can affect installation costs.

Investing in Energy Independence

While the initial investment may seem significant, consider it a long-term investment in energy independence. Off-grid systems reduce reliance on the grid, providing a reliable source of clean energy that can lead to savings over time. They also offer energy resilience, valuable in remote areas or during power outages.

Before deciding, consult reputable solar installers for customized quotes based on your location and energy needs. They can recommend suitable brands and components for your off-grid solar solution.

  • Our Kits & Products

    High Energy Use 20kW Family Off-Grid Kit

    High Energy Use 20kW Family Off-Grid Kit

    A 20kW off-grid solar system suits families of five or more with minimal power restrictions. Both Deye/Pylontech and Sigenergy options offer expandable batteries and solar arrays up to 27-36kW, with integrated EV charging capabilities and independent operation for uninterrupted power supply.

10+ Years - 100% Off Grid In Victoria

Go100% Off Gridwith 100up!

Get real advice from real off-grid solar design technicians. Call Fred direct on 1300 489 152 or send a text to 0400 092 621
Avaiable Vic Wide
Worse Case Winter Sizing
Generator-less Design
Google
Large metal shed with complete rooftop solar panel array and construction equipment on rural property surrounded by trees

Enquire about - The Cost of a 20kW Off-Grid Solar System

We respect your privacy - View our Privacy Policy.