At risk· Confirmed
GT Solar
Welland, SA
Sign seen
6 August 2026
Trading since
1 November 1999
Systems installed (est.)
~4,650
Size
Large
Why we think this
Under threat because Business name GT Solar cancelled on 6 August 2026. Still trading signs: ABN 23609222755 (GREENTECH GROUP PROPRIETARY LIMITED) is still active; ABN 18083664331 (SPINNAKER WATCH INVESTMENTS PTY LTD) is still active. Only a business name has been cancelled. That can mean the business closed, or just that it now trades under another name or ABN. A second source (ABN cancelled, Google closed, dead website) would confirm a closure.
The date comes from: ASIC business names: Business name GT Solar cancelled.
One sign of trouble (a cancelled name or ABN, a dead website, a run of one star reviews) but not enough to call it closed.
What customers said
The 50 most recent of its 93 SolarQuotes reviews
The 5 star reviews say
The 5-star reviews praise the sales staff (mainly Jack and Mel Tan) for being knowledgeable, patient and not pushy, plus competitive pricing, on-time and tidy installers, and help with grid connection and the app. Most are written just after the sale or install, with some noting good follow-up.
The 1 star reviews say
One reviewer says the battery did not back up the house during a blackout and the company wanted $1200 to fix it, and threatened court. Another paid for a 6.6kW system installed over 4.5 months earlier but it was never working and the company would not return calls or emails.
Summaries of the reviews, written by us from the public reviews.
The evidence
- 6 August 2026Business name GT Solar cancelledASIC business names register · check it
The legal entities behind it
GREENTECH GROUP PROPRIETARY LIMITED
ABN 23609222755 · Australian Private Company · Active · since 24 November 2015
Trading names: Pattern Energy, GT Solar, GREENTECH HOME IMPROVEMENTS
SPINNAKER WATCH INVESTMENTS PTY LTD
ABN 18083664331 · Australian Private Company · Active · since 1 November 1999
Trading names: Surf Experience, SW Sales, KAIHUI, SW Car Success, Property in 360, GT SOLAR, EDWARDS SOLAR HOT WATER - BAULKHAM HILLS, S.W.I.T. SPINNAKER WATCH INFORMATION TECHNOLOGY
The Trustee for GT Solar Unit Trust
ABN 83305469859 · Fixed Unit Trust · Cancelled · since 30 October 2010
GT Solar
Business name · Cancelled · since 6 August 2026
Installer gone? We look after orphaned systems.
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