Greenfield Energy
Jack personally monitors customer systems after install — and customers notice the difference on their power bills.
The business installs Fronius inverters and Jinko panels among others, and explicitly avoids recommending undersized or low-quality systems, which several customers say made the difference versus cheaper quotes they received. Recent reviews have averaged slightly lower than earlier ones, which is worth keeping in mind — if you're concerned about aftercare, it's worth asking Jack directly how post-install support is structured and who your contact point will be if issues arise.
Their work
What it's like working with them
Based on a sample of Google reviews (68 total)
“system's performance has noticeably improved since the service”
What they help with
Based on what their customers hired them for
How they stack up
Context from 447 solar panel installations in Cairns
Credentials & background
Sourced from 5 public records so you don't have to look them up yourself
About Greenfield Energy
Jack Greenfield, the owner, leads consultations personally — customers repeatedly highlight that he visits homes, explains system options in plain language, and matches system size to actual usage patterns rather than defaulting to a one-size-fits-all pitch. The installation side involves a rotating crew of named technicians: Adam, Harley, Matt, Kyle, and others who are each praised for clean, fast rooftop work — often completing full installs in a single day even on 15kW+ systems in Cairns heat. Beyond standard grid-connected installs, Greenfield handles off-grid systems, battery storage with rebate paperwork, 3-phase setups, and solar panel cleaning and maintenance — making them a genuine one-stop shop across the solar lifecycle rather than just a new-install business. Kyle specifically handles servicing and cleaning of existing systems, while Jack and team member Howard assist with app setup and remote monitoring so customers can track production versus consumption in real time. The business also takes on warranty troubleshooting and remediation work for failed systems installed by competitors who've since closed — a niche that's hard to find locally. With around 12 years operating out of Cairns North, they cover residential and commercial projects and have an office team — including Tracey — managing scheduling, communication, and follow-up.
Best for: homeowners wanting a sized-to-usage system with genuine post-install monitoring, customers adding battery storage or going off-grid, and anyone needing maintenance or warranty remediation on an existing solar system.
Location
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Claim This Profile — Free →Common questions about Greenfield Energy
What areas does Greenfield Energy service?+
The business is based in Cairns North and serves the broader Cairns region. Customers mention installations at Trinity Beach, Palm Cove, and other surrounding suburbs. For more remote locations, it's worth confirming coverage directly with Jack, as reviews don't specify a formal service boundary.
What do customers say about Greenfield Energy's pricing?+
Pricing comes up frequently as competitive but not always the lowest quote. Several customers explicitly note they chose Greenfield over cheaper alternatives because Jack took time to explain what each system would actually deliver. One customer moved from a $1,300 quarterly bill to $45, and another reports zero electricity costs since install — suggesting the value-for-money argument holds up over time.
Does Greenfield Energy handle battery storage and off-grid systems?+
Yes — multiple reviews reference battery storage installs alongside solar, and at least one customer had a full off-grid system installed. The team is also noted for managing battery rebate paperwork on the customer's behalf, which reduced the upfront cost in one reviewed case. If you're planning a hybrid or off-grid setup, this appears to be within their core scope rather than an occasional add-on.
Can Greenfield Energy service or repair an existing solar system installed by another company?+
Based on reviews, yes. At least one customer had panels replaced under warranty after their original installer ceased trading, and Kyle is specifically mentioned for solar cleaning and servicing work that measurably improved system output. If you have an underperforming or legacy system, it's worth contacting them directly to describe the setup and see whether they can assess it.
How long does installation typically take from first contact?+
Most reviewers report installs completed within one to two weeks of initial contact, with a handful noting the job was done in under a week. One large 15.4kW system with 35 panels across two inverters was completed in a single day. Weather and scheduling can affect timing — a couple of reviews mention brief delays due to rain — so confirming your expected date at the quote stage is sensible.