Trentham Energy

Closed· Confirmed

Black Diamond Air & Solar

Golden Grove, SA

Closed

30 March 2026

Trading since

8 September 2014

Systems installed (est.)

~150

Size

Medium

Why we think this

Closed because Google lists Black Diamond Air & Solar (u7/31-49 Greenwith Rd, Golden Grove SA 5125) as permanently closed; ABN 65601687567 (BLACK DIAMOND SOLAR PTY. LTD.) cancelled on 27 June 2019; Solar Directory archived its listing on 14 August 2024 because its website stopped working. Closure dated 30 March 2026, from Last SolarQuotes review (last seen trading). Against that: its website http://www.bdsolar.com.au/ still loads. Google and websites often lag a collapse, so the registers win.

The date comes from: Last SolarQuotes review (last seen trading).

The business has stopped trading: a register, Google or the industry's review sites say so.

What customers said

5 star1
4 star0
3 star1
2 star0
1 star1

3 SolarQuotes reviews

The 5 star reviews say

The single 5-star review, posted in January 2017, simply praises the company as fantastic, with no detail on whether it concerns the sale, the install or later support.

The 1 star reviews say

The 1-star review, from January 2026, says the solar system installed in August did not reduce the electricity bill, even after the company reset the software and a battery was added in November. The customer also reports calls going only to a message service with no follow up, and calls the experience a scam.

Complaints about after sales support

Summaries of the reviews, written by us from the public reviews.

The evidence

  • Seen recentlyGoogle lists Black Diamond Air & Solar (u7/31-49 Greenwith Rd, Golden Grove SA 5125) as permanently closedGoogle business listing · check it
  • 27 June 2019ABN 65601687567 (BLACK DIAMOND SOLAR PTY. LTD.) cancelledABN register · check it
  • 14 August 2024Archived because its website stopped working. Said over 20 years.Solar Directory · check it

The legal entities behind it

  • BLACK DIAMOND SOLAR PTY. LTD.

    ABN 65601687567 · Australian Private Company · Cancelled · since 27 June 2019

    Trading names: MY BLACK DIAMOND

Installer gone? We look after orphaned systems.

If the company that put in your solar or battery has closed, we can check the system, chase the manufacturer's warranty and keep it running.

Black Diamond Air & Solar: Closed (Golden Grove, SA) | Trentham Energy