Published 10 January 2026 · updated 1 July 2026
Perth has around 45 active solar installers, and on paper, they look identical. The same 4.8-star rating. The same wall of badges on the homepage. The same promise to look after you for 25 years. None of that tells you who will still be answering the phone in year six, when an inverter throws a fault and the warranty is only as good as the company standing behind it.
TL,DR
- Five public checks verify any Perth solar company in about 10 minutes: NETCC Approved Seller status, ISO 9001/14001/45001 certification, a current WA electrical contractor (EC) licence, how long the business has actually traded, and a real local address.
- Stars and badges don't separate installers. Almost every Perth company shows 4.8 stars and the same logos, so they tell you little about who survives to honour a 10-year workmanship warranty.
- Read reviews lowest-first. Aftercare shows on a company's worst day, and a 5.0 from eight reviews is not a 4.9 from 1,600.
- The market matrix below ranks no one. It lists installers on objective columns only, and we have put ourselves in it on the same terms as everyone else.
Contents
So here is a sharper way to think about how to choose a solar installer in Perth: stop trusting the marketing and verify it yourself. Almost every claim that matters can be checked against a public register in about 10 minutes, from your kitchen table. This guide gives you the five checks, shows you how to read reviews without being played, and lines the WA market up on facts instead of star ratings.
What stars and badges
don't tell you
A star rating measures how a sale felt on installation day. It says almost nothing about what happens three years later, when a panel underperforms or a battery needs a firmware fix and the original crew has moved on. Solar is a 10-to-25-year relationship. The question that matters is not “are they nice”, it is “will they still exist, still be licensed, and still pick up the phone when something goes wrong”.
Badges have the same problem. A logo on a website is a claim, not proof. Manufacturer accreditations lapse. Certifications expire. Some companies display credentials they no longer hold, and a few display ones they never did. The good news: every credential worth having is logged in a public register you can search yourself. If a company is what it says it is, verification takes minutes. If it isn’t, that is exactly what you want to find out before you sign.
The five checks
that verify an installer
Work through these in order. Each one is independently checkable, and each tells you something a star rating can’t.
| Check | Why it matters | Verify it yourself |
|---|---|---|
|
NETCC Approved Seller |
Binds the business to the New Energy Tech Consumer Code, which sets sales, contract and dispute-resolution standards |
|
|
ISO 9001/14001/45001 |
Independently audited quality, environmental and safety management systems, not a self-awarded badge |
|
|
WA electrical contractor (EC) licence |
The business is legally permitted to perform and certify the electrical work |
|
|
Years actually trading |
A 25-year warranty is only as strong as the company behind it |
|
|
Real local HQ (not a PO box) |
Local presence is what makes aftercare and call-backs realistic |
Street address on the website, checked on a map (or visit) |
Two points add depth to the table. First, NETCC Approved Seller status sits at the business level, but the people designing and installing your system should hold their own accreditation through Solar Accreditation Australia (SAA), which replaced the old Clean Energy Council installer programme in 2024. Look for SAA GCPV accreditation for grid-connected solar and SAA GCBS for battery storage. NETCC tells you the retailer is code-bound; SAA tells you the person on your roof is qualified to be there.
Second, a compliant grid-connected install in Perth has to meet AS/NZS 4777.1 and AS/NZS 4777.2 for connection to the SWIS, the network Western Power operates. A properly licensed, SAA-accredited installer handles that as routine. If a quote is vague about who holds the EC licence or who lodges the network application, treat that as a warning sign rather than a detail.
How to read reviews
Reviews are useful once you stop reading them the way the company hopes you will.
Sort lowest-first. The one and two-star reviews are where aftercare shows its real face, because they capture the days a company would rather you didn’t see. A business that replies to its worst reviews with specifics, dates, and a fix has nothing to hide. One that replies with a defensive template, or doesn’t reply at all, is telling you how a future problem of yours will be handled.
Then weigh volume. A 5.0 from eight reviews is not the same signal as a 4.9 from 1,600, and a sudden cluster of glowing five-star reviews in a single week is worth a second look. Cross-check across more than one platform, because a company that looks flawless in one place and ordinary in another is showing you which platform it manages hardest. And keep one thing in mind that the review sites rarely advertise: many of them earn a referral fee when you request a quote through them. That doesn’t make them useless. It makes them a starting point, not a verdict.
Earliest review timeline.
What to look for: a long, visible timeline of customer feedback.
What it means for you: the longer the public track record, the harder it is for a business to “reset” its story. It’s also your best hint about aftercare maturity.
Averages across platforms
What to look for: similar sentiment across at least two credible sources (e.g., SolarQuotes + Google, or SolarQuotes + Solar Choice).
What it means for you: a strong operator usually looks steady everywhere. A weak operator often looks “amazing” in one place and meaningfully worse in another, your job is to find out why.
Enough reviews to matter
What to look for: a sample size that reduces the odds of luck. To further refine the results, we’re considering more than 400 reviews across measured platforms.
What it means for you: 10 perfect reviews can be real. It can also be fragile. Hundreds of reviews generally give you a more stable signal of what you’re walking into.
What to look for: consistency across diverse platforms where customers visit frequently.
What it means for you: Diverse opinons including that of non-purchasing customers. For this aspect Google provides a greater holistic customer cross section experience.
Reviews that prove behaviour over time. If solar and batteries are an investment, your decision framework should be built around risk reduction, not hype.
Perth's market matrix
on the facts
Here is the part most “top 10” lists skip: the methodology. This matrix ranks no one. It lists installers on objective, public-record columns only, ordered by how long each has traded rather than by any score we invented. We have included ourselves on exactly the same terms, in the same order as everyone else. The point is not to crown a winner. It is to give you a template you can extend to any installer you are considering. Position 2 onwards in alphabetical order.
| Installer | NETCC Approved Seller | EC licence | Local HQ | Trading since | ISO 9001/14001/45001 |
|---|---|---|---|---|---|
|
Perth Solar Warehouse |
Yes (current to May 2027) |
Yes (EC010771) |
Yes (Bibra Lake and Neerabup) |
Group since 2004; PSW trading since 2013 |
Yes (9001/14001/45001) |
|
Empower Solar |
Yes |
Yes |
Yes |
2019 |
– |
|
JFK Group |
Yes |
Yes (EC16068) |
Yes |
2017 |
– |
|
Koala Solar |
Yes |
Yes |
Yes |
2016 |
– |
|
MLEC |
Yes |
Yes |
Yes |
2014 |
– |
|
Perth Solar Force |
Yes |
Yes |
Yes |
2016 |
– |
|
Positive Energy |
Yes |
Yes |
Yes |
2021 |
– |
|
Regen Power |
Yes |
Yes |
Yes |
2003 |
– |
|
Solargain |
Yes |
Yes |
Yes |
2009 |
Yes |
|
Sunterra |
Yes |
Yes |
Yes |
2010 |
– |
Every cell in that table comes from a register you can open yourself. Run the five checks on each company, fill in the columns, and the market sorts itself on facts. You will notice quickly that very few installers hold all of ISO 9001 quality, 14001 environment and 45001 safety, and that “years on the website” and “years on the ABN” are not always the same number.
Frequent questions
How do I check if a solar installer is properly accredited in WA?
Cross-check three public registers. Use the NETCC register, administered by the Clean Energy Council, for Approved Seller status. Use the WA Building and Energy register for a current electrical contractor (EC) licence. Use IAF CertSearch for any ISO certifications the company claims. For the people doing the work, confirm SAA accreditation (GCPV for solar, GCBS for batteries).
What ISO certifications should a good solar installer have?
ISO 9001 (quality), ISO 14001 (environmental) and ISO 45001 (safety). Few installers hold all three. Holding them signals audited internal systems checked by an external certifier, rather than a logo a company has awarded itself.
Are online star ratings enough to choose an installer?
No. Read the lowest reviews first to see how a company handles problems, compare across more than one platform, and weigh review volume rather than the headline number. Remember that many review sites earn a referral fee when you enquire, so treat them as a starting point.
How long should a solar company have been operating?
Long enough that its warranty means something. A 25-year promise from a business that has traded for two years carries more risk than the same promise from one with a long, checkable history. Confirm the ABN registration date on ABN Lookup and the earliest public review, not just the “established” line on the website.