Nearly half the solar companies in our directory hold a perfect five-star rating, and almost none rate badly. Of 1,222 rated companies, 571 sit at exactly 5.0 and only 13 sit below 4.0, as at 2 August 2026. When that many businesses share the top score, the score stops telling you who is good.
This post shows what we found, explains why solar company reviews in Australia bunch up at the top, and gives you a practical way to read one. The short version: the star count is close to useless on its own, but the reviews underneath it are worth reading if you know which to open.
What the numbers look like
Our directory held 1,611 Australian solar companies as at 2 August 2026. Of those, 1,222 had a public star rating, and between them they carried 130,526 reviews.
| Rating band | Companies | Share of rated companies |
|---|---|---|
| 5.0 exactly | 571 | 46.7% |
| 4.5 to 4.9 | 524 | 42.9% |
| 4.0 to 4.4 | 114 | 9.3% |
| 3.0 to 3.9 | 12 | 1.0% |
| Below 3.0 | 1 | 0.1% |
Read the bottom two rows again. Across 1,222 rated companies, 13 rate below 4.0 and exactly one rates below 3.0. That is about one in a hundred landing where most people would say “bad”. Now the top row. If 571 companies are tied at first place, five stars is not a distinction, it is the most common result in the market.
Put the two together and you have the problem. A homeowner comparing a 5.0 against a 4.8 thinks they are choosing between excellent and very good. In fact 89.6% of rated companies sit at 4.5 or higher and the bad end is nearly empty. There is not enough spread left in the number to separate anyone.
Most five-star companies have very few reviews
The 571 perfect scores are not 571 businesses with long, spotless track records. Most have thin evidence behind them.
| Perfect 5.0 companies | Count | Share of the 5.0 group |
|---|---|---|
| Fewer than 10 reviews | 217 | 38.0% |
| 10 to 49 reviews | 201 | 35.2% |
| 50 or more reviews | 153 | 26.8% |
About three in four perfect scores (418 of 571) rest on fewer than 50 reviews. A five-star rating built on six reviews and one built on six hundred look identical on screen and are completely different evidence.
Evidence is thin across the whole directory, not just at the top. Of the 1,222 rated companies, 289 have fewer than 5 reviews and 771 have fewer than 25. The median company has 27. Only 328 have 100 or more, and the most-reviewed has 6,654. The typical listing you click on carries about two dozen opinions.
Busier companies do not rate much worse
If ratings mostly measured quality, you would expect them to drop as a company does more jobs. More installs means more complex roofs, more crews and more years for a fault to surface. We checked. They barely move.
| Reviews on the listing | Companies | Average rating |
|---|---|---|
| Under 10 | 288 | 4.82 |
| 10 to 49 | 427 | 4.81 |
| 50 to 199 | 382 | 4.83 |
| 200 to 499 | 96 | 4.80 |
| 500 or more | 29 | 4.75 |
From one end of the directory to the other, covering businesses with a handful of jobs and businesses with thousands, the average shifts by 0.08 stars, as at 2 August 2026.
This is a boring result, and the boringness is the point. If the scale cannot tell apart a company with 8 reviews from one with 800, it is not measuring much. The busiest companies do rate very slightly lower, but 4.75 against 4.82 is not something a homeowner can act on. The flatness holds by state too, with every state and territory averaging between 4.77 and 4.91.
Why ratings bunch up at the top
None of this means the industry is dishonest. Ratings compress at the top in most local trades, for ordinary reasons. Understanding them lets you read around them.
Small samples swing wildly. With four reviews, one happy customer is a quarter of the score, and a single review from a neighbour can hold a perfect rating in place for a year. With 289 companies sitting on fewer than 5 reviews, plenty of scores are one opinion away from moving.
Businesses ask at the best possible moment. The standard practice is to request a review on handover day, when the system is on the roof and the app is showing generation. That is a real moment of satisfaction, but it is the high point of the relationship. Inverter faults, warranty claims and slow after-sales support show up months or years later, long after the review was left.
Businesses can ask selectively. If a company only sends review requests to customers it knows are happy, the average is not a sample of its work, it is a sample of its best work. The Australian Competition and Consumer Commission says a business may mislead consumers if it suppresses or edits negative reviews, and that any incentive must be offered whether the review is positive or negative (ACCC, online reviews for products and services). In a December 2023 sweep of 137 businesses across the economy, the ACCC reported that 37% showed signs of concerning conduct around reviews (ACCC media release). That sweep was not about solar and says nothing about any company in our directory.
Unhappy solar customers often complain somewhere else. When a system underperforms or a warranty claim stalls, people frequently go to their electricity retailer, their state Energy and Water Ombudsman, state fair trading, or the complaints process under the New Energy Tech Consumer Code. Those complaints are real and recorded, just not where the star rating can see them. The Google score keeps the handover-day reviews and loses the year-three disputes.
Dodgy solar installers leave before the reviews catch up. A business gathering serious complaints often does not last long enough for them to settle into a low average. That is part of why only one company in our directory sits below 3.0.
How to read a solar installer’s rating
The number is weak rather than worthless. It still flags the rare outlier, since 13 companies below 4.0 out of 1,222 is a small enough group that a low score deserves a look. What it cannot do is rank the top. Use it as a filter, not a decision, and spend your time on the layer underneath.
| What to check | What good looks like | What should make you pause |
|---|---|---|
| Review count | 30 or more, ideally 100 or more | Under 10, where the score is one or two opinions |
| The star number | About 4.4 and up, as a pass or fail | Below 4.0, rare enough in solar to warrant a look |
| The 2 and 3 star reviews | Calm, specific, fixable complaints | None at all on a listing with hundreds of reviews |
| Recency and clustering | A steady trickle over 12 to 24 months | Nothing in the past year, or 20 reviews in a fortnight |
| Owner responses | Replies naming the issue and the fix | Arguing with customers, or no reply to any complaint |
| After-sales reviews | Year two or three, warranty claims, callouts | Every review written within days of install |
| Accreditation | Verified by you on the official register | No accreditation number offered |
| Cross-check | Same picture on Google, ProductReview and elsewhere | Glowing on one platform, very different on another |
Set a minimum review threshold
Decide before you start that you will not treat any average as meaningful below about 30 reviews. That already removes most of the directory, since 771 of 1,222 rated companies have fewer than 25. It does not make small companies bad, since plenty of good local installers just do not chase reviews. It means your evidence has to come from references, the quote, and the register checks below.
Read the 2 and 3 star reviews, not the 1 and 5 star ones
This is the most useful habit on the list. One-star reviews are often written in anger and can be about things outside the installer’s control, like a delayed grid connection. Five-star reviews are usually written at handover and say very little. The middle reviews are where you find the calm, fair customer who had a real problem, and where you learn how a business behaves when something goes wrong.
Look for repeats. One person waiting six weeks for a callout is an anecdote. Five people describing the same wait across two years is a pattern.
Check recency and clustering
Sort by newest and see whether good reviews are still arriving. A company that was excellent three years ago may have changed hands, grown too fast, or moved to subcontracted crews. Then eyeball the dates. A natural trickle looks different from a burst, and a burst is a prompt to read carefully rather than a verdict.
Watch how the company answers complaints
Owner responses are the most honest part of a listing, because the business writes them itself. A reply that names the issue, states what was done and gives a contact is a good sign about after-sales culture. A reply that disputes whether the person was even a customer tells you what a warranty argument would feel like.
Verify accreditation yourself
Do not take accreditation from a company’s homepage or from a directory, including ours. Solar Cobber does not verify, track or display any company’s accreditation status. Check it at the source, which takes two minutes.
- Installer accreditation. Ask for the accrediting installer’s name or accreditation number and check it on the Solar Accreditation Australia status check. Accreditation moved from the Clean Energy Council to Solar Accreditation Australia in 2024, and an accredited installer is required for the federal STC rebate and most state schemes.
- Retailer approval. Check whether the business you are signing with appears on the New Energy Tech Consumer Code approved seller directory, which covers sales practices, quotes, contracts and after-sales obligations. The Clean Energy Council also publishes its own accreditation and retailer information.
Do not look for this in a listing description. Only 93 companies (5.8%) mention the Clean Energy Council or CEC there and 103 (6.4%) use the word “accredited”, as at 2 August 2026, which tells you nothing about the rest. The other claims in that field are just as unverifiable: 52 companies call themselves premium and 18 award winning.
What we are not saying
We are not saying any company with a five-star rating is doing anything wrong. Most five-star ratings here are best explained by small samples and ordinary review-request timing, not by manipulation. We have not audited any individual listing, we do not name any company as suspicious, and nothing here is an accusation against a particular business. The finding is about the shape of the market. When 46.7% of rated companies share the same top score and 1.1% score below 4.0, the distribution is too narrow to carry information, whatever the cause.
Nor are reviews useless. There are 130,526 of them behind these listings. The mistake is reading the average instead of the reviews.
Methodology
What the data is. Aggregated public Google Business listing data for solar companies in the Solar Cobber directory, covering star rating, review count, listing description text and location.
Sample. 1,611 companies, of which 1,222 carried a public star rating and are the basis for every rating figure here. Together they held 130,526 reviews. Percentages of “rated companies” use 1,222 as the denominator.
When and how. All figures were queried directly against the live directory on 2 August 2026, with no sampling or weighting, and no exclusions beyond companies with no public rating.
Limitations, honestly stated:
- This is not a census of the Australian solar market. It is our directory, a large sample but not a complete list. Companies we do not list, or that trade only through a parent brand, are missing.
- We measure the rating, not the installation. We have not inspected a single system. Nothing here can tell you whether a company installs well, only what the public scoreboard looks like.
- A snapshot moves, and descriptions are patchy. Ratings change daily, especially for the 217 perfect scorers with fewer than 10 reviews. The claim counts come from keyword matching on description text, which many companies leave blank.
Frequently asked questions
Does a five-star rating mean a solar installer is bad?
No. It means the rating is not doing much work. As at 2 August 2026, 571 of 1,222 rated companies in our directory sit at exactly 5.0, so a perfect score is the most common outcome rather than a rare one. Plenty of good installers hold a 5.0, and so do plenty of businesses with six reviews.
How many reviews should a solar company have before I trust the rating?
We would not treat an average as meaningful below about 30 reviews, and would want 100 or more before leaning on it. The median company in our directory has 27 reviews and 771 of the 1,222 rated companies have fewer than 25. A small company can still be excellent, you just judge it on the quote, the references and the register checks instead of the stars.
Is a 4.6-rated installer worse than a 5.0-rated one?
Not in any way you can rely on. In our data 89.6% of rated companies sit at 4.5 or above, and the average shifts by only 0.08 stars between companies with under 10 reviews and companies with 500 or more. Compare instead on warranty, equipment, who does the install and how complaints are handled. Our guide on how to compare solar quotes covers what to line up.
Where do unhappy solar customers actually complain?
Often not on Google. Billing and feed-in tariff disputes tend to reach the state Energy and Water Ombudsman, while workmanship and product faults go to the installer, state fair trading, or the complaints process under the New Energy Tech Consumer Code. That split is one reason star ratings look better than the experience behind them.
Do star ratings protect me from solar panel scams in Australia?
Not on their own. Ratings sit near the top of the scale across the whole market, so they cannot separate a careful installer from a bad one. Verify accreditation yourself, read the two and three star reviews, get the full system specification in writing, and be wary of large upfront deposits.
Where to go from here
Build your shortlist from the company directory or your state’s listings, then apply the checks above rather than sorting by stars. Our guide on how to choose a solar installer covers what to ask once you are talking to them. Get three quotes, read the middle reviews, verify accreditation yourself, and treat the star rating as the least interesting thing on the page.
Related reading
- The Australian Solar Installer Report 2026
- do bigger installers give worse service
- what installers claim about themselves, and what it is worth
- what happens to your warranty if your installer disappears
About this research
This is independent desk research by Solar Cobber. We did not visit sites, request quotes or accept payment for inclusion. Figures are dated and sourced, and pricing and policy details change, so confirm current terms directly before you sign anything.