About Us





Over 35 years of experience in Home Energy Smart Solutions

A Company You Can Trust

Cool or Cosy, part of the Homeworks Co Group, emerged from humble beginnings in 1984 to become South Australia’s leading Energy Solutions provider, and a company recognised for its innovation, customer service and integrity.

• Established in 1984

• Over 75 South Australian employees

• Over 100MW of solar systems installed

• In-house finance company

• We are the manufacturer

• We are the retailer

• We are the installer

Brands You Can Rely On

The Homeworks Energy Group


Learn more about what makes us so good!

Manufacture and Installation

We Keep Pushing The Market

We pride ourselves in providing ‘Value for Money’ high quality energy efficiency products and services to all South Australians.

As South Australia’s pioneering manufacturer of Cellulose Fibre Insulation, Cool or Cosy showed from its inception that cutting-edge innovation is at its core. This coupled with the desire to provide unparralled customer service, soon saw Cool or Cosy dominating the market with its local version of the world recognised form of natural Cellulose Insulation.

In 2010, we commenced installation of Solar PV systems in South Australia and, to date, we have installed more than 12,000 systems. In addition to our direct sales to residents, we have been successful in gaining two key contracts through State and Local Government.


Our People Are The Best In The Business

Our Team Is Still Growing

Cool or Cosy and the group of companies provides employment for over 70 South Australians and their families and are proud to be an Equal Opportunity Employer in SA.

Not only is our Cellulose Insulation used in homes locally, but we send it interstate and export it to a number of countries- including to Dubai in the UAE!

Over thirty years in operation, Cool or Cosy now has over 45,000 customers, an enviable reputation of quality and service, and is currently one of the largest Solar System installers in South Australia with over 7000 systems installed.

Ranked South Australia’s #1 Solar Installer in 2017 and 2018 by SUNWIZ.

We are a key supplier to Renewal SA for the installation of Solar PV systems on SA Housing Trust homes through South Australia.

We are also the sole supplier for the City of Adelaide’s Solar Saver Program.

*promotion ends 31st of December 2023, Terms & Conditions apply.
20% Off, Plus Up To 48 Months Interest Free*