Updated September 2026
Best Solar Installers in Perth
Perth gets more sunshine than any other Australian capital, making it ideal for solar. But WA's unique electricity market (Synergy/Western Power, separate from the NEM) means you need an installer who understands local export rules and connection requirements. We reviewed Perth installers on accreditation, local experience, years trading, and pricing.
Our Top Perth Solar Installers
5 established solar companies working in Perth, rechecked on 30 September 2026 against each company's own website, its ABN record and dated customer reviews. We list only companies that are trading and have an office serving Perth; any that close, leave solar or move on come off the list. They run by years trading, longest first, and the details come from each company's own website and public records. We don't accept payment for places on this list, and being listed here is not the same as being Why Solar Approved.
| Installer | Office | Trading since | NETCC approved seller | Best for |
|---|---|---|---|---|
| Regen Power | Canning Vale | 2003 | Not confirmed | Homeowners wanting an experienced Perth company for solar and a battery |
| Solargain | Malaga | 2005 | Not confirmed | Homeowners wanting a large, established Perth company |
| PSW Energy | Bibra Lake | 2011 | Yes | Homeowners north or south of the river adding a battery |
| Perth Solar Force | Wangara | 2013 | Yes | Homeowners north of the river wanting a high-volume local installer |
| Solahart (Perth dealers) | Perth | Not published | Not confirmed | Homeowners wanting the security of a national brand |
Regen Power
A Canning Vale company founded in 2003, with the solar engineer Professor Chem Nayar as its founding managing director. It is a Tesla Powerwall Certified Partner and has offices in other states as well as Perth.
- Office:
- Canning Vale, serving Perth
- Years in business:
- 23 (since 2003)
- Accreditation:
- Ask for its NETCC approved seller status and the SAA numbers of the installers on your job
- Best for:
- Homeowners wanting an experienced Perth company for solar and a battery
- More than two decades trading from Perth
- Tesla Powerwall Certified Partner
- Founded with a solar engineering professor as managing director
Solargain
A family-owned company that started in Perth in 2005 and now has offices across Australia, with its head office at Malaga. Its WA roots mean long experience with Western Power and Synergy.
- Office:
- Malaga, serving Perth
- Years in business:
- 21 (since 2005)
- Accreditation:
- Ask for its NETCC approved seller status and the SAA numbers of the installers on your job
- Best for:
- Homeowners wanting a large, established Perth company
- Perth-founded and family-owned
- Trading since 2005
- Large team with offices around the country
PSW Energy
Formerly Perth Solar Warehouse
Perth Solar Warehouse, now PSW Energy, works from Bibra Lake and Neerabup with an in-house installation team. It is a Tesla Powerwall Certified Premium Installer and a New Energy Tech Consumer Code approved seller.
- Office:
- Bibra Lake, serving Perth
- Years in business:
- 15 (since 2011, ABN registration)
- Accreditation:
- New Energy Tech Consumer Code approved seller
- Best for:
- Homeowners north or south of the river adding a battery
- In-house installation team
- Tesla Powerwall Certified Premium Installer
- Sites north and south of the river
Perth Solar Force
A Wangara-based installer that started in 2013 as RJB Electrical. SunWiz ranked it WA's largest residential installer by capacity for 2024, and it is a New Energy Tech Consumer Code approved seller.
- Office:
- Wangara, serving Perth
- Years in business:
- 13 (since 2013, as RJB Electrical)
- Accreditation:
- New Energy Tech Consumer Code approved seller
- Best for:
- Homeowners north of the river wanting a high-volume local installer
- WA's largest residential installer by capacity in 2024 (SunWiz)
- New Energy Tech Consumer Code approved seller
- Started as an electrical contractor
Solahart (Perth dealers)
The national Solahart brand sells through local dealers, and Perth has four: Joondalup, Balcatta, Cannington and Rockingham. The Cannington dealer has traded since 1992.
- Office:
- Perth, serving Perth
- Years in business:
- Solahart brand since 1953; each dealer is its own business
- Accreditation:
- Ask for its NETCC approved seller status and the SAA numbers of the installers on your job
- Best for:
- Homeowners wanting the security of a national brand
- National brand and warranty backing
- Dealers north and south of the river
- Solar panels and solar hot water from one company
How We Chose These Installers
We're a comparison platform, not an installer. We don't sell solar systems, no installer owns a piece of Why Solar, and nobody pays to appear on this page. This list started as our own research into the Perth market. On 30 September 2026 we rechecked every company against its own website, ABN Lookup and dated customer reviews, and took off any that had closed, left solar, could not be found or worked in another city. The ones left are real, trading and local.
The installer we match you with is held to a higher bar. An installer earns the Why Solar approval by passing six checks before they see a single homeowner. Together they are the Why Solar Approved standard:
Credentials
Accreditation and licensing, current and genuine, checked rather than assumed.
Staying power
Years actually trading, and the financial stability to still be here in a decade to honour what they promise.
Proof of work
Real installations we can examine, not a folder of stock photos and slogans.
The actual hands
Who physically turns up to do the job, not the cheapest available subcontractor.
What goes in
Genuine, traceable components that match the quote exactly. No quoting German and fitting Chinese.
How they handle trouble
How they behave when something goes wrong. That, not the sales call, is the true measure of a company.
In Perth those checks have a local edge. Credentials means the licences and accreditation for this state, and experience with Western Power, which runs the Perth network. Staying power means years trading under the same name, because a warranty is only as good as the company behind it. The actual hands means the licensed electricians and accredited installers who turn up, not the cheapest subcontractor available that week.
After every match, one of our team calls you to make sure they turned up, quoted what they said they would, and treated you properly. Installers who don't measure up are removed from the network. Some already have been.
What solar costs in Perth
Typical installed prices in Perth by system size, before and after the federal STC rebate. Perth is in STC Zone 3, which sets how many certificates a system earns. The rebate falls every 1 January until the scheme ends after 2030, so the same system earns less the longer you wait.
| System size | Installed price (before rebate) | STC rebate in Perth | Price after STCs |
|---|---|---|---|
| 5 kW | $4,500 to $6,500national band | $1,292 (34 STCs) | $3,208 to $5,208 |
| 6.6 kW | $5,000 to $6,500 | $1,710 (45 STCs) | $3,290 to $4,790 |
| 10 kW | $7,200 to $9,500 | $2,622 (69 STCs) | $4,578 to $6,878 |
| 13 kW | $10,000 to $15,000national band | $3,382 (89 STCs) | $6,618 to $11,618 |
Assumptions: installed prices are indicative ranges from our solar panel cost guide: the Perth bands for 6.6 kW and 10 kW and the national bands for 5 kW and 13 kW. STC rebate: system size × STC zone multiplier × deeming years, rounded down to whole certificates (6.6 kW × Zone 3 multiplier 1.382 × 5-year 2026 deeming period = 45 certificates at $38 each). Retailers usually apply it as a discount on the quote. State programs are not included. Actual quotes vary with the roof, the equipment and the switchboard.
Solar payback in Perth
How long a 6.6 kW and a 10 kW system take to pay for themselves in Perth, on the price after STCs above. The range runs from a cheap install on a good feed-in rate to a dear install on a poor one.
| System | Yearly generation | Yearly saving | Price after STCs | Simple payback |
|---|---|---|---|---|
| 6.6 kW | 10,853 kWh | $1,180 to $1,769 | $3,290 to $4,790 | 2 to 4 years |
| 10 kW | 16,443 kWh | $1,788 to $2,680 | $4,578 to $6,878 | 2 to 4 years |
Assumptions: 5.3 peak sun hours a day (our postcode solar data for 6000) × 365 days × 85% system efficiency. 30% of the generation is used in the home at 31c per kWh, the WA average retail rate in our electricity data, and the rest is exported at 2.25c to 10c per kWh. Synergy pays the top rate only for exports between 3pm and 9pm, so most midday exports earn the low end. Payback is the price after STCs divided by the yearly saving, with no battery, tariff changes or panel degradation. A household that uses more of its solar at home pays back faster.
Solar in Perth: What You Need to Know
How much solar Perth is installing
In the 12 months to 1 October 2026, 26,832 small solar systems were installed across Greater Perth, averaging 9.3 kW each, according to the Clean Energy Regulator's postcode data. That brings the total to 455,296 systems since records began.
Single-storey homes on big blocks leave plenty of roof, but the export rules mean a bigger system mostly earns more if the household can use the extra power in the day or store it for the evening.
Local considerations
Western Australia operates outside the National Electricity Market. Synergy is the sole retailer for most Perth households, and Western Power manages the grid.
Synergy's DEBS export rates vary by time of day. Your installer should design the system to maximise self-consumption, not just generation.
Perth has some of the highest solar penetration in the world. Western Power has introduced export limits in many areas. Ask about export limiting and battery storage.
The sandy soil in many Perth suburbs means ground-mounted systems are a viable option for larger properties.
Electricity networks and export limits
- Western Power (Perth metro and surrounding areas)
Western Power's standard connection pathway caps exports at 1.5 kW, and larger systems need its approval, so a Perth system is designed around what the home uses rather than what it can sell. New systems also have to support emergency solar management, which lets the network turn rooftop solar down on the rare days when there is too much of it on the grid.
Synergy's Distributed Energy Buyback Scheme pays more for exports between 3pm and 9pm than during the middle of the day. That is why west-facing panels and batteries make more sense in Perth than in most capitals: both move your solar into the hours when the grid pays for it.
State rebates and incentives
On top of the federal STC rebate in the table above, and the federal battery rebate if you add a battery: Western Australia offers up to $1,300 (Synergy) or $3,800 (Horizon Power) from the WA Residential Battery Scheme, stackable with the federal rebate. Western Australia rebates in full
What to look for in a Perth installer
- SAA-accredited installers on your job (mandatory for STC rebates)
- Deep familiarity with Western Power connection processes and Synergy DEBS rates
- At least 5 years operating in the Perth market
- Workmanship warranty of 5+ years
- Experience with export limiting (increasingly required in Perth)
- Clear advice on battery storage vs. export given WA's unique market
Perth Suburbs We Cover
Our installer directory covers all of Greater Perth, including:
Installs, rebates and feed-in tariffs suburb by suburb: solar panels in Perth.
Questions about solar installers in Perth
Who is the best solar installer in Perth?
There is no single best installer for every Perth home: the right one depends on your roof, your network and whether you want a battery. We judge installers on the six checks of the Why Solar Approved standard: credentials, staying power, proof of work, the actual hands, what goes in and how they handle trouble. The companies on this page are established Perth installers worth comparing. If you want one that has passed all six checks, the rebate quiz matches you with one Why Solar Approved installer near you, and a solar expert calls you before you sign anything.
How much does it cost to install a solar system in Perth?
A 6.6 kW system, the size most price comparisons use, typically costs $5,000 to $6,500 installed in Perth before rebates. The federal STC rebate on that system in Perth (STC Zone 3) is worth about $1,710 this year, which brings the price to about $3,290 to $4,790. A 10 kW system is typically $7,200 to $9,500 before the rebate and $4,578 to $6,878 after it. Retailers usually take the STC value off the quote for you. Tile roofs, two storeys, switchboard upgrades and premium panels or inverters push the price up.
What is the 20% rule for solar?
It is a rule of thumb for sizing panels against the inverter: fit around 20 to 33 percent more panel capacity than the inverter is rated for. Panels rarely deliver their full rating on a roof, because heat, dust and the angle of the sun all take a share, so a slightly larger array keeps the inverter working close to capacity for more of the day. The Clean Energy Council's rules allow panels up to a third larger than the inverter, which is why a 5 kW inverter is usually paired with 6.6 kW of panels and a 10 kW inverter with up to 13.3 kW. Oversize beyond that and the system is not eligible for STCs. Ask your installer to show the panel-to-inverter ratio on the quote.
Why are people getting rid of their solar panels?
Mostly they are not giving up on solar, they are replacing a bad system or a small old one. The common stories are an installer that went broke and left nobody to honour the warranty, a cheap inverter that failed after a few years, panels mounted badly enough to leak or come loose, and an export limit that stops a large system earning what the salesperson promised. Our register of collapsed solar companies lists 18 that operated in Western Australia. Some owners are also swapping early systems of a kilowatt or two for a modern array and a battery. Solar itself is rarely the problem; the company behind it often is, which is why staying power is one of our six checks.
How much does a solar installer charge?
Installers price the whole job rather than charging for labour separately. The quote covers the panels, inverter, mounting, cabling, the electrician's time, the connection paperwork and the STC claim. In Perth that works out to about $758 to $985 per kilowatt for a 6.6 kW system before the rebate, and less per kilowatt for bigger systems. Extras that appear on some quotes: a switchboard upgrade, a meter change, tilt frames, work on a steep or two-storey roof, and a three-phase connection. Our service is free for homeowners.
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