Going solar in Cairns is not the same as going solar in Brisbane. Your installer must mount panels for cyclone wind region C, pick hardware that survives tropical humidity and salt air, and navigate Ergon Energy’s export rules. This guide reviews six Far North Queensland installers: Hielscher Electrical, Replenishable Energy, Greencell Energy, G-Solar & Electrical, Solar Systems Cairns and East Coast Energy Solutions, compared on years operating, accreditation, equipment brands, workmanship warranties, pricing signals and customer review patterns.
This is independent desk research using company websites, public records, accreditation databases, customer review platforms and published pricing. We did not visit these companies, request quotes or contact them, and nobody paid to be included. By the end you will know who to call first, the trade-offs each installer carries, and what to ask before you sign.
Quick Winners
- Best Overall: Hielscher Electrical. In FNQ since 2010, in-house crews, 4.9 stars from ~130 SolarQuotes reviews.
- Best Premium Systems: Replenishable Energy. REC and AIKO panels, SolarEdge, Fronius and Enphase, since 2011.
- Best for Batteries: Greencell Energy. Battery-focused with a 10-year workmanship warranty.
- Best for Commercial: G-Solar & Electrical. Owner-run local handling 2kW homes to 1.7MW projects.
- Best Owner-Operator Service: Solar Systems Cairns. The owner quotes, installs and follows up himself.
- Best for Off-Grid and Rural: East Coast Energy Solutions. In-house teams, 10-year workmanship warranty, true off-grid capability.
Comparison Table
| Company | Years in business | Panel brands | Battery options | Workmanship warranty | Independent rating (July 2026) | Best suited for |
|---|---|---|---|---|---|---|
| Hielscher Electrical | Since 2010 | Trina, AIKO, LONGi, REC, Jinko | Tesla Powerwall 3, BYD, Sigenergy | Not published, ask | 4.9 stars, ~130 SolarQuotes reviews | Most Cairns households |
| Replenishable Energy | Since 2011 | REC, AIKO, JA Solar | Tesla Powerwall, BYD | Min. 5-year whole of system | Not independently verified | Premium builds, Tablelands |
| Greencell Energy | Since 2015 | Jinko, Trina, Qcells, Canadian Solar | BYD, Sungrow, Fronius | 10 years | Not independently verified | Battery and hybrid systems |
| G-Solar & Electrical | Since 2014 | Not published, ask | Tesla Powerwall certified | 10-year installation guarantee | Not independently verified | Commercial and complex jobs |
| Solar Systems Cairns | Owner ~15 yrs as electrician | REC, Qcells, Jinko, Phono | Limited range, ask | Not published, ask | 4.6 stars, 14 SolarQuotes reviews | Hands-on personal service |
| East Coast Energy Solutions | Since 2013 | AIKO, Jinko, Trina, REC, Hyundai | Tesla Powerwall, Sigenergy, BYD | 10 years | 4.6 stars, ~58 SolarQuotes reviews | Off-grid and rural properties |
Best Overall: Hielscher Electrical
Hielscher Electrical is the safest first call for most Cairns households. Installing across Far North Queensland since 2010, the company says it has completed over 3,000 installations and holds a 4.9-star average from roughly 130 SolarQuotes reviews as of July 2026 with no negative ratings visible. It runs its own crews rather than subcontracting.
Pros
- Sixteen years operating locally with a very large FNQ install base
- In-house installers, no subcontractors, per its SolarQuotes profile
- Wide range: Fronius, SolarEdge, Sungrow and Enphase inverters, Tesla Powerwall 3 and BYD batteries
- SAA accredited installers and designers, New Energy Tech Approved Seller, Master Electricians member
- Reviews consistently praise communication, punctuality and tidy work
Cons
- Does not publish a specific workmanship warranty term on its website, so pin this down in writing before signing
- Premium inverter focus means quotes typically land above budget offers
- Popularity in the dry season can mean longer waits for an install slot
Get a quote at hielscherelectrical.com.au or browse all Cairns installers in our directory.
Key facts. Installing since 2010, electrical contractor licence QLD 83104, servicing Cairns and Far North Queensland. SAA accredited installers, New Energy Tech Approved Seller, NECA and Master Electricians member.
Why we selected them. Longevity, volume and review quality together. A 4.9 average over 130 reviews is hard to fake, and its own crews have worked through many cyclone seasons.
Products and brands. Panels include Trina, AIKO, LONGi, REC and Jinko. Inverters span Fronius, SolarEdge, Sungrow, Enphase and Goodwe. Batteries include Tesla Powerwall 3, BYD and Sigenergy, plus EV chargers and heat pumps.
Installation quality and reputation. Work is done by in-house electricians. Reviewers repeatedly mention clean cable runs and crews arriving when promised, with no recurring complaint theme found.
Pricing and value. Not published. Quality 6.6kW systems in Cairns typically quote between about $5,000 and $9,000 after the federal STC rebate, and Hielscher’s brand list points to the upper half of that band.
Warranty and after-sales. The company advertises warrantied parts and workmanship and has dedicated aftercare staff, but the workmanship term is not published. Ask for the number of years in your quote.
Who they are best for. Anyone wanting the lowest-risk mainstream choice in Cairns. Look elsewhere for the cheapest possible system or a tiny operator’s personal touch.
Best Premium Systems: Replenishable Energy
Replenishable Energy has designed solar in the Far North since 2011 and leans premium: REC and AIKO panels, SolarEdge, Fronius, SMA and Enphase electronics, and Tesla Powerwall and BYD storage. Its footprint runs from Innisfail to Port Douglas and across the Atherton Tablelands.
Pros
- Fifteen years operating in the region
- Premium equipment list: REC panels, SolarEdge, Fronius, SMA, Enphase, Tesla Powerwall
- Wide service area including Mareeba, Atherton, Kuranda, Innisfail and Port Douglas
- New Energy Tech Approved Seller, SAA accredited installers, Smart Energy Council and NECA affiliations
- Reviewers specifically praise neat, level, square installation work
Cons
- Advertises a minimum five-year whole-of-system warranty, well short of the 10-year cover Greencell, G-Solar and East Coast promote
- Premium brand focus means quotes usually beat budget offers by thousands, hard to justify on small systems
- Publishes no indicative pricing, so comparison shopping takes legwork
Get a quote at replenishableenergy.com.au or browse all Cairns installers in our directory.
Key facts. Operating since 2011, electrical licence 75986, servicing Cairns, the Tablelands and the Cassowary Coast. New Energy Tech Approved Seller, SAA accredited installers.
Why we selected them. The strongest premium equipment list in the region, 15 years of local history, and reviews that repeatedly call out installation neatness.
Products and brands. REC, AIKO and JA Solar panels. SolarEdge, Fronius, SMA, Sungrow and Enphase inverters. Tesla Powerwall and BYD batteries, plus EV chargers.
Installation quality and reputation. Reviews describe careful, detail-oriented work and helpful technical advice. The company promotes oversized system design, which suits Cairns where wet season cloud can cut output by roughly 20 to 30 per cent.
Pricing and value. Not published. Budget for premium-band pricing. The step up buys panel-level monitoring with SolarEdge or Enphase, genuinely useful for spotting corrosion or connector faults early in a coastal climate.
Warranty and after-sales. Minimum five-year whole-of-system warranty with after-sales support and maintenance. That is the shortest headline installation cover among our picks, so ask whether they will match rivals in writing.
Who they are best for. Buyers who want top-shelf hardware anywhere from Port Douglas to Innisfail or the Tablelands. Look elsewhere if a long workmanship warranty is your top priority.
Best for Batteries: Greencell Energy
Greencell Energy, established in 2015 with offices in Cairns and Townsville, has built its offer around battery storage and hybrid systems, backed by a 10-year workmanship warranty. With the federal Cheaper Home Batteries Program cutting roughly 30 per cent off installed battery costs since July 2025, a battery-literate installer matters more than ever.
Pros
- 10-year workmanship warranty on all installations
- Strong battery and hybrid focus with BYD, Sungrow and Fronius options
- New Energy Tech Approved Seller with accredited designers and installers
- Residential and commercial systems across North Queensland
- Broad Tier 1 panel range: Jinko, Trina, Qcells, Canadian Solar
Cons
- Splits its operation between Cairns and Townsville, so it is not a solely Cairns-focused team and scheduling depends on where crews are working
- Founded in 2015, so it has weathered fewer FNQ cyclone seasons than the 2010 and 2011 veterans on this list
- No independent review rating could be verified for the Cairns branch as of July 2026, making reputation harder to benchmark
Get a quote at greencellenergy.com.au or browse all Cairns installers in our directory.
Key facts. Established 2015, offices in Cairns and Townsville, servicing homes and businesses across North and Far North Queensland. New Energy Tech Approved Seller.
Why we selected them. The clearest battery specialisation of the local field, at exactly the moment the federal battery rebate makes storage stack up. See our solar battery rebate guide for how the discount works.
Products and brands. Panels from Jinko, Trina, Qcells and Canadian Solar. Inverters and storage from Fronius, SMA, Sungrow and BYD.
Installation quality and reputation. The company says it uses accredited installers and industry best practice, and the reviews we found praise thorough, quick work, though the verifiable review footprint is thinner than Hielscher’s or East Coast’s.
Pricing and value. Not published. Battery-inclusive hybrid quotes in FNQ commonly run from the low teens of thousands upward before the federal battery discount. Get the rebate shown as a line item.
Warranty and after-sales. The publicly stated 10-year workmanship warranty is among the best terms on this list. Confirm battery installation labour is covered by the same term.
Who they are best for. Anyone whose main goal is storage, blackout resilience during storm season, or a hybrid-ready system. Look elsewhere if you want the longest-established purely local operator.
Best for Commercial: G-Solar & Electrical
G-Solar & Electrical, established in 2014 and owned by fifth-generation Cairns local Grant Newman, installs everything from 2kW residential systems to 1.7MW commercial projects, with a 10-year installation guarantee and off-grid capability.
Pros
- Commercial capability up to 1.7MW alongside residential work
- 10-year installation guarantee, stated publicly
- Owner-led local business with accredited installers, Tesla Powerwall certified
- Off-grid systems, batteries and EV chargers
- A reviewer with 40 years in the electrical trade called its workmanship the best they had seen
Cons
- Small owner-led team, so capacity is limited and lead times can stretch when a large commercial job is running
- Does not publish its panel and inverter brand list, so you cannot compare hardware before enquiring
- We could not verify an independent review rating and count as of July 2026
Get a quote at g-solar.com.au or browse all Cairns installers in our directory.
Key facts. Established 2014, electrical contractor licence QLD 82908, based in Cairns and servicing the wider region. Accredited installer credentials published on its site.
Why we selected them. No other genuinely local operator publicly documents commercial projects at this scale, and the workmanship praise in reviews is unusually specific.
Products and brands. Grid-connect and off-grid solar, batteries, EV chargers and solar health checks. Tesla Powerwall certified. Specific panel and inverter brands are not published, so request exact hardware and datasheets in your quote.
Installation quality and reputation. Reviews describe professional, drama-free installs with accurate savings estimates and transparent communication from Grant directly. Testimonials reference in-house teams.
Pricing and value. Not published. Handypay finance is available. For commercial work, insist on a performance-modelled proposal against your actual interval data rather than a generic payback claim.
Warranty and after-sales. The 10-year installation guarantee is competitive with the best here, and ongoing maintenance is offered, which matters for commercial owners with financed assets.
Who they are best for. Businesses, farms and complex jobs that want one accountable local. Look elsewhere for published package pricing or the fastest start date.
Best Owner-Operator Service: Solar Systems Cairns
Solar Systems Cairns is the smallest operation on this list, and that is its appeal. Owner Elliott Fox, an electrician with around 15 years on the tools, quotes, installs and handles the follow-up himself. It holds 4.6 stars from 14 SolarQuotes reviews as of July 2026, all four stars or above.
Pros
- The owner personally inspects, quotes and installs, with no sales layer or call centre
- Quality equipment: REC, Qcells and Jinko panels with Enphase, Fronius, SMA and SolarEdge electronics
- Reviews specifically praise first-rate follow-up assistance after installation
- Handles grid-connect, off-grid, batteries, EV chargers and heat pumps
Cons
- Tiny capacity means longer waits, and a one-person-led business carries key-person risk if the owner is sick or booked out
- Small verifiable review base of 14 SolarQuotes reviews, against 130 for Hielscher
- Publishes no workmanship warranty term or battery range, so both must be clarified in the quote
Get a quote at solarsystemscairns.com.au or browse all Cairns installers in our directory.
Key facts. Based in Cairns North, servicing the Cairns region. Owner-operated by a licensed electrician with roughly 15 years of trade experience.
Why we selected them. Every review we found describes the same experience: the owner turns up, explains everything, does the work and answers the phone afterwards. That consistency earns a place.
Products and brands. Panels from REC, Qcells, Jinko and Phono. Inverters from Enphase, Fronius, SMA, SolarEdge and SolaX, including microinverter options that suit shaded or complex Cairns rooflines.
Installation quality and reputation. Reviewers describe on-time completion, minor problems fixed quickly, and comfort dealing directly with the tradesperson doing the work. No complaint themes surfaced.
Pricing and value. Not published. Owner-operators often price competitively because no sales commission sits in the quote, but confirm the Ergon connection paperwork is included in scope.
Warranty and after-sales. Follow-up service is the recurring theme of its reviews. The formal workmanship warranty term is not published, so get it in writing.
Who they are best for. Homeowners who want one accountable person from quote to aftercare. Look elsewhere for large commercial projects, a big battery range or the fastest install date.
Best for Off-Grid and Rural: East Coast Energy Solutions
East Coast Energy Solutions, founded in Cairns in 2013, is our pick for properties beyond or on the edge of the Ergon network. It builds genuine off-grid systems alongside residential and commercial work, uses long-term in-house installers, and backs installations with a 10-year workmanship warranty. It rates 4.6 stars from roughly 58 SolarQuotes reviews as of July 2026.
Pros
- Genuine off-grid design and installation capability for rural FNQ
- 10-year workmanship warranty, stated publicly
- In-house installation teams with post-install quality assurance
- Modern equipment: AIKO, Jinko, Trina and REC panels, Sungrow, Sigenergy, Goodwe and Fronius inverters, Tesla Powerwall, Sigenergy and BYD batteries
Cons
- A minority of reviews report communication delays during quoting and occasional installation inconsistencies, worth watching on a complex job
- Large hybrid systems are a serious outlay, with customers reporting roughly $27,000 to $30,000 for 13 to 20kW systems
- Its Hyundai panel line is less common in Australia, so weigh local support against the 30-year warranty the company promotes
Get a quote at eastcoastenergysolutions.com.au or browse all Cairns installers in our directory.
Key facts. Founded 2013, based in Cairns, servicing North Queensland including Townsville. In-house accredited electricians.
Why we selected them. Off-grid is unforgiving work, and East Coast pairs a decade-plus of it with the strongest publicly stated warranty position of the off-grid capable installers here.
Products and brands. Residential, commercial, off-grid, batteries and EV chargers. Panels from AIKO, Jinko, Trina, REC and Hyundai. Inverters from Sungrow, Sigenergy, Goodwe and Fronius. Batteries include Tesla Powerwall, Sigenergy and BYD.
Installation quality and reputation. Most reviews describe punctual, tidy crews. The complaint pattern is thin but real: a handful mention slow quoting responses and minor quality inconsistencies, which its in-house teams and QA checks should catch.
Pricing and value. Reviewer-reported figures put large hybrid systems in the high twenty thousands, consistent with market rates. Compare like-for-like hardware across three quotes, as our guide to comparing solar quotes shows.
Warranty and after-sales. The 10-year workmanship warranty ties for best-in-class here. For off-grid systems, ask specifically about outage response times, because an off-grid fault means no power at all.
Who they are best for. Rural blocks, farms, and anyone weighing an off-grid or heavily battery-backed system. Look elsewhere if flawless quoting communication is a dealbreaker.
How We Reviewed
We shortlisted every installer we could find actively marketing and installing in the Cairns region, then cut companies we could not verify as currently operating. That check mattered: one frequently recommended name, Hush Energy, has been reported to SolarQuotes as having ceased trading, so it does not appear above.
We assessed each remaining company on reputation and years operating, equipment quality, installation quality signals (in-house versus subcontracted labour where discoverable), pricing transparency, warranty terms, customer service patterns, review volume and sentiment, and after-sales support. Sources included company websites, SolarQuotes and other review platforms, accreditation records and business directories, all checked in July 2026. Where a fact could not be verified, we said so rather than guessing. We did not request quotes, contact any company, or accept payment for placement. There is no scoring formula behind the awards, just judgement about who fits which buyer.
Choosing a Solar Company in Cairns
Check accreditation properly. Installer accreditation moved from the Clean Energy Council to Solar Accreditation Australia in 2024. Confirm current SAA accreditation and that the retailer is approved under the New Energy Tech Consumer Code, since STC rebate eligibility depends on it.
Ask who actually climbs the roof. In-house crews are the norm among our picks, but confirm the names on your job. Cyclone region C mounting is not the place for an unknown subcontractor.
Demand cyclone-rated engineering. Racking, fixings and clamps must be certified for wind region C. Ask for the engineering certificate for your roof type and how penetrations are sealed against wet season rain.
Think corrosion. Salt air and humidity attack cheap frames, clamps and isolators. Ask about salt mist certification and marine-grade fixings near the coast.
Understand Ergon’s rules. Ergon Energy runs the Cairns network. Standard residential connections are export-limited, commonly to 5kW, while Ergon’s dynamic connection option lets larger systems export flexibly with a guaranteed 1.5kW floor. Your installer should handle the application and be upfront about metering delays.
Plan around the wet season. Cloud cover from roughly December to April cuts production by 20 to 30 per cent at its peak, and installs get rescheduled around rain. Book in the dry season for better availability.
Compare warranties in writing. Panel product, panel performance, inverter and workmanship warranties are four different things. Publicly stated workmanship terms on this list run from five years to ten. Our guide on choosing a solar installer covers what each warranty protects.
Get monitoring included. Consumption monitoring, not just generation, lets you size a battery properly later.
Get at least three quotes with identical hardware tiers, and check the Queensland installer rankings and our directory before you shortlist.
Frequently Asked Questions
How much does solar cost in Cairns in 2026? A quality 6.6kW system from an established local installer typically quotes between about $5,000 and $9,000 after the federal STC rebate, depending on hardware tier. Cyclone-rated mounting and steep tropical roofs push quotes up, and reviewer-reported figures for large 13 to 20kW hybrid systems with batteries reach the high twenty thousands. See our STC rebate guide.
How many quotes should I get? Three is the practical sweet spot. Fewer gives you no price signal, more mostly earns repeated sales calls. Make sure each quote specifies the same panel, inverter and mounting tier.
Which warranties actually matter? Workmanship first, because roof leaks and cable faults are installer problems. Then inverter (aim for 10 years), then panel product warranty (25 years is common). Panel performance warranties matter least.
Are cheap solar deals safe in Cairns? Be careful. A rock-bottom quote usually means budget racking, entry-level hardware or subcontracted labour. In wind region C, undersized fixings are a safety risk and corrosion-prone components fail early. Only accept a cheap quote if the racking certification, salt mist rating and workmanship warranty survive scrutiny.
How do I check an installer is legitimate? Look up the installer’s SAA accreditation, check the retailer against the New Energy Tech approved seller list, verify the Queensland electrical contractor licence, and read the newest reviews, not just the headline average.
What happens if my installer goes bust? Your workmanship warranty usually dies with the company, which is what makes long-established locals attractive. Manufacturer warranties on panels, inverters and batteries survive, claimed directly or through another accredited installer. Hush Energy’s reported closure shows this is a live risk.
Should I get a battery now or wait? The federal Cheaper Home Batteries Program has discounted installed battery costs by roughly 30 per cent since July 2025, and in Cairns storm season blackout resilience adds value beyond bill savings. If you are not ready, at least buy a hybrid-ready inverter and consumption monitoring now.
How much deposit is normal? Around 10 per cent is typical. Treat requests for 50 per cent or full payment before installation as a red flag.
What are the red flags in a Cairns solar quote? No engineering certification for wind region C, no line item for the Ergon connection application, big systems sold without mentioning export limits, pressure to sign today for a disappearing discount, and no specific panel or inverter models named.
Written by the Solar Cobber editorial team. Last updated July 2026.
Disclosure: Solar Cobber is a free directory that may earn referral or advertising fees from installers listed on this site. Commercial relationships never influence rankings or awards. This review is based on independent desk research using company websites, accreditation records, review platforms including SolarQuotes and ProductReview, and published pricing, checked in July 2026. No quotes were requested and no company paid for inclusion. Browse our directory or the best installers in Queensland.