Premium 20KW Solar Systems

Ideal for small commercial operations

  • Double Glass Solar Panels
  • PERC Technology Panels
  • 5yr Workmanship Warranty
  • 30yr Performance Warranty
Home » 20KW Solar System


Getting started with a 20KW solar panel system

Our 20KW solar power system is our smallest package on offer. This solution is an ideal sole traders running a small business. A 20KW solar panel and inverter solution is an affordable entry-level solar panel system and it can be upgraded to meet future needs if your situation changes.

Costline is proud to offer the best 20KW solar panel system that money can buy. This package includes high quality tier 1 solar panels and an efficient 20KW solar inverter. While it’s our smallest package on offer, it provides enough power for many small businesses.

Save up to $6400 / year*


20KW Of Solar Panels Power Out-Put

Tier 1 solar module
Reputed solar brand
High efficiency solar module
25 years of panel linear output warranty
Local Australian support

How much solar panels cost?


1 X 20KW Inverter

High efficiency
Proven track record
Online monitoring (optional)

What does a solar inverter do?


Flexible Roof Mounting Solution

Available in tin, tile and clip lock
Fully anodised and corrosion-resistant
Light weight
Easy to install

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Experts with Tons of Experience.
Fast Turn Around
* Performance Figures are Estimated Based on CEC Guidelines, Please Consult With Our Experts Before Using These Figures For Making a Purchase as it Varies Site by Site

Get a Free Solar Assessment

Speak to an expert
Request a call back to discuss your needs.

Let us analyse your electricity bills to find the best solar panels and system for your household or business.
Call 1300 582 706 or Click the button below to request a call back from one of our friendly consultants for an obligation-free chat.

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What is a Tier 1 Solar Panel System?

Solar power is broadly recognised as a simple and effective way to reduce your CO2 emissions and energy bills, but not all solar panel systems are equal. Some aren’t designed to cope with Australia’s heat, others don’t deliver comparable performance. A poorly performing system will limit your sustainability and financial return. The best way to protect your investment is to select high quality solar products designed for life in Australia.

Solar panel manufacturers are ranked into three tiers, 1-3. Tier 1 solar manufacturers gain the top ranking by proving themselves to be reliable and stable and they provide the best value products on the market. Only a small percentage of solar panels manufacturers around the world have achieved the top Tier 1 ranking. Costline only sells and installs Tier 1 products, giving you the peace of mind of receiving quality products that will provide the best return on investment.

Our 20KW solar system solution is designed for the needs of Australian families: efficient, weather resistant, and capable of meeting your power demands on a daily basis.

Quality you can trust

Costline is 100% Australian owned and operated — and one of the country’s leading solar providers.

We have partners in Melbourne, Sydney, Brisbane, and Adelaide and service the entire nation with a large network of professional, qualified installers.

Our 20KW solar panel system comes with a 25 year performance warranty, 10 year manufacturer’s warranty, and 5 year warranty on workmanship (including installation).

To find out if a 20KW solar panel system is right for your home or business, give us a call on 1300 582 706 or get a quote now.


We choose the most reliable solar brands for our customers


Installed Solar Systems

Most Trusted

Australian Solar Retailer

Zero Deposit

No deposit solar installation

The Costline Difference

We provide simple and straightforward proposals backed by full-service support.
So you can start saving, sooner.

We analyse your bills

Our consultants work out the systems that will deliver the best value and return.

You choose the design

Receive a proposal and select the product and price point right for you.

With you all the way

Costline is your one stop shop from support to installation, even cleaning.