Top Volume Solar Retailers 2025

The Annual Top Volume Retailer Award Winners for 2025

Another year has passed in the Australian solar industry and the continued shift towards renewable energy has driven the market at a steady pace. There have been a few bumps in the road for 2024 and the market hasn’t performed as well as previous years.

After careful analysis of national installation volumes, Sunwiz is happy to announce this years Top Volume Retailers, whom have taken extra steps to adapt to changes in the market and have spectacularly risen in the ranks, which deserves to be celebrated and endorsed for their stellar efforts.

SunWiz has been tracking every solar power system installed in Australia since 2009. We are the undisputed authority on solar market volumes, and our data is widely quoted by companies, NGOs, and government agencies.

Numerous companies assert themselves as the largest without substantiating their claims, creating a challenge for customers to navigate through the plethora of often unsubstantiated assertions.

SunWiz has created digital endorsement badges for the companies listed below to validate their status as the top installers of solar power in 2024.

Want to see if you are eligible to be a Top Volume Retailer?

To find out if you’re a Top Volume solar company in 2025 and would like to obtain your badge and listing, please click the button below and submit your details.

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TOP RETAILER

Overall

Commercial - Overall STC + LGC

Sub-100kW

Residential

Think Renewable is in the Top 10 Companies in Australia for Residential Solar installations.

Think Renewable won the SunWiz 2025 Awards and is ranked among the Top 10 Companies in Australia for residential solar installations. Additionally, Think Renewable has been recognized as a Local Solar Hero for the capacity of solar systems installed in 2024 across multiple regions, including Sydney-City & Inner South, Sydney-Eastern Suburbs, and Sydney-Sutherland & Shire.

Australian Capital Territory

New South Wales

Queensland

South Australia

MLEC Solar is in the Top 5 SA Retailers for 2024

MLEC also won SunWiz 2025 Awards for Top Volume Battery Retailer and Best Rated Retailer – Most Popular Category.

Tasmania

Victoria

Advantage Solar is a Top Volume Solar Retailer, and Local Solar Hero For 2025

Advantage Solar won the SunWiz 2025 Awards and is ranked among the Top 10 Companies in Victoria for the residential capacity of solar systems installed in 2024. Additionally, Advantage Solar has been recognized as the #1 Local Solar Hero in Melbourne West and a Local Solar Hero in Melbourne-North East for the capacity of solar systems installed in 2024.

Western Australia

Perth Solar Force is the #1 Residential Solar Power Retailer in Western Australia for 2024

Perth Solar Force also won a SunWiz 2025 Award for Top Volume Battery Retailer.

MLEC Solar is in the Top 10 WA Retailers for 2024

MLEC also won SunWiz 2025 Awards for Top Volume Battery Retailer and Best Rated Retailer – Most Popular Category.

Interval Meter Data Tool Disclaimer

The Interval Meter Data Tool is designed to convert standard form meter data for the OpenSolar platform.

Users are responsible for meeting the requirements of the data that needs to be uploaded to the tool, which extends to but is not limited to

The completeness and accuracy of the data
Ensuring that there are no missing records
Uploading the data in one of the compatible intervals (15m, 30m or 1h).

Data uploaded to the Interval Meter Data Tool should not contain multiple datasets. In the case an excel file is uploaded, only the first sheet will be considered.

The accuracy of the output is dependent on the user’s dataset, therefore SunWiz does not guarantee the accuracy of the output.

The user must acknowledge that the output of the tool is beyond the control of SunWiz, and they must ensure that the data is accurate on their own behalf.

In the event that the program runs into an issue, the user will be issued with warnings or solutions to address or resolve the issue.

If the user requires additional support, they can avail it as a separate service from SunWiz

Warranties on performance

The Interval Meter Data tool from SunWiz attempts to convert most frequently occurring types of standard meter data file types in specific formats for the purpose of being used on the OpenSolar platform. Unless mentioned otherwise, SunWiz does not extend any guarantee of any kind, either expressed or implied, on the limited success of the Interval Meter Data Tool and the extent of it’s automation. Depending on the user’s upload, the program may require additional inputs, the training for which is not included in the purchase of this service and can be purchased separately.

Input requirements

The Interval Meter Data Tool accepts data in the 15-minute, 30-minute and 60-minute(hourly) intervals. In case the file is uploaded in an excel format (*.xls, *.xlsx, *.xlsm), only the first sheet of the file will be considered. Our tool is required to accept raw meter data, usually highlighted as ‘E’ data in its standard format; and therefore SunWiz does not guarantee that all data formats will be accepted.

For complete automation, the file must adhere to an acceptable standard format. In the case of an issue, the user will be provided with instructions by the tool on how it can be resolved. Warnings will be issued if the data is incompatible, incomplete with missing records and if multiple datasets are uploaded at once.