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20kW Solar Inverter Systems

A 20kW inverter is one of the most robust phase solar inverter solutions available for residential and light commercial applications. Designed for properties with three phase power, this system offers high efficiency, powerful output, and advanced features such as backup mode, smart grid controls, and scalable connection options through our solar inverters.

At Solar Galaxy, we install CEC Certified 20kW three phase inverters from leading brands like Fronius, Sungrow, and SMA. These units are engineered for indoor or outdoor installation, offering flexibility, quiet operation, and proven reliability in the Australian market.

Why Choose a 20kW Solar Inverter

A 20kW inverter is ideal for larger rooftops, businesses, and energy-intensive homes. These phase inverters support high-capacity PV arrays and enable participation in advanced energy systems.

  • Seamless installation for both indoor and outdoor settings
  • Designed for three phase grid environments
  • Operates efficiently in grid mode max and backup configurations
  • Supports energy storage integration with batteries
  • Helps customers play installation quiet operation without compromising power
Why Choose a 20kW Solar Inverter

20kW Solar Inverter Specifications

Before selecting your 20kW solar inverter, it’s important to understand the system’s specifications and how it aligns with your property’s needs. Whether you’re installing for a large home or small commercial site, the right phase inverter ensures optimal efficiency, durability, and future-ready performance. The following features demonstrate why this inverter size is a top choice in the Australian solar power market.

Key Benefits of Our 20kW Inverter Solutions

  • Engineered for three phase properties with high energy loads
  • Built-in options for backup mode, battery readiness, and advanced grid sync
  • Enables quiet operation, suitable for indoor or outdoor installation
  • CEC Certified for compliance with national solar standards
  • High efficiency ratings, even under partial load conditions

Best Applications for a 20kW Inverter

  • Large residential homes with high electricity usage
  • Small business sites with three phase infrastructure
  • Properties preparing for EV chargers, batteries, or VPP participation
  • Systems needing multi-string configuration and scalable growth
  • Installations requiring outdoor installation safe components

Saving Millions, Planting Billions

1

Rated Warranty

50,000

Tons CO2 Reduction

50,000,000

Generated In Savings

200,000,000

Trees Planted
SOLAR AND BEYOND

Powering Partnerships

Our Inverter Brands

We install proven solar inverter brands trusted by Australian consumers, from homes to fleets. Compare features, serviceability, and monitoring in our brand hub.

FAQs About 20kW Solar Inverter Systems

Got Questions About 20kW Solar Inverter Systems? We’ve Got Answers!

Typically, large residential homes or small commercial buildings with three phase power infrastructure.

Yes. All models are rated for outdoor installation safe use, with weatherproofing and quiet operation.

Absolutely. When paired with compatible batteries, it enables backup mode to protect key loads during outages.

Yes, many 20kW inverter installations are eligible for financial incentives such as Small-scale Technology Certificates (STCs). These rebates can significantly reduce upfront system costs and improve overall payback time. For full details on eligibility and current incentive rates, visit our solar inverter rebates page.

A 20kW inverter typically pairs with a solar system sized between 24kW and 28kW, depending on roof space, panel efficiency, and design goals. Most properties will require high-output modules and a carefully planned layout to achieve maximum performance. For full system guidance, explore our solar systems options and browse compatible solar panels.

Pricing

6.6kw
Perfect for smaller homes
From $50 / month
Up-to
$
2000
Savings
  • Tier-1 N-Type High Performance Panels
  • Lifetime support included!
  • Battery and EV compatible for future upgrades!
  • Free Monitoring to track your savings!
  • Fast-track installation
Unlock Savings Now
13.2kw Solar
Best for mid-sized homes
From $75 / month
Up-to
$
4000
Savings
  • Tier-1 N-Type High Performance Panels
  • Lifetime support included!
  • Battery and EV compatible for future upgrades!
  • Free Monitoring to track your savings!
  • Fast-track installation
Unlock Savings Now
15kW +
Ideal for energy-hungry homes
From $90 / month
Up-to
$
5000+
Savings
  • Tier-1 N-Type High Performance Panels
  • Lifetime support included!
  • Battery and EV compatible for future upgrades!
  • Free Monitoring to track your savings!
  • Fast-track installation
Unlock Savings Now

Want to get started with a high-output solar solution? Contact Us for a quote tailored to your home or business.

1300 339 596