2025 Tesla Premium Certified Installer: Perth Solar Warehouse

Perth Solar Warehouse is honoured to announce that we have been officially recognised as a Tesla Premium Certified Installer for 2025. This exclusive certification places Perth Solar Warehouse among Tesla’s most trusted and technically advanced solar and battery storage partners — a select group that meets the company’s highest installation quality, performance, and customer satisfaction standards.

Perth Solar Warehouse recognised as a Tesla Premium Certified Installer 2025
Premium installers among Top 2% of Tesla Certified Installers in Australia
6 year combined Tesla Energy collaboration. 4 year Premium Certified
Tesla internal audit: Customer satisfaction rating of 4.8/5

Tesla’s Premium Certified Installer designation represents the top tier of accreditation within Tesla’s installation program. To achieve this recognition, solar companies must demonstrate resonance with Tesla’s values:

Exceptional installation quality
Deep product knowledge and understanding
Distinguished customer experience
Longevity of relationship with Tesla
Alignment with Tesla’s mission

Only a small number of installers worldwide earn this recognition — and Perth Solar Warehouse is one of them for a fourth consecutive year.

At Perth Solar Warehouse, our mission has always been to deliver renewable energy solutions that perform as promised. This recognition is a direct reflection of our team’s dedication to excellence in every aspect of the process — from design and consultation to installation and aftercare.

Our customers can have complete confidence that their Tesla Powerwall and solar systems are installed by a company that Tesla itself recognises for quality, reliability, and precision.

As part of the Premium Certified network, PSW customers benefit from:

Enhanced warranty support and direct alignment with Tesla’s service standards
Priority access to the latest Tesla products and updates
Expert system design optimised for performance, efficiency, and aesthetics
Peace of mind knowing installations are performed by Tesla-trained professionals

Launch: Perth Solar Warehouse receives the first Tesla Powerwall 3 in Western Australia.

Choosing a Tesla Premium Certified Installer ensures that your system is not only installed correctly, but also backed by Tesla’s confidence in our work. For homeowners, this means:

Maximum Powerwall performance and longevity
Streamlined product registration and service
Access to Tesla’s newest technologies sooner
A partner who understands the nuances of local energy regulations and grid requirements

When you choose Perth Solar Warehouse for your Tesla installation, you’re not just investing in technology — you’re investing in expertise, trust, and long-term energy independence.

Tesla Energy Tech Talk Event, Tesla Showroom, O’Connor, December 2024: Derek McKercher.

Since our founding, Perth Solar Warehouse has helped thousands of homeowners and businesses harness the power of solar and battery storage. Becoming a Tesla Premium Certified Installer reaffirms our position as Western Australia’s leader in cutting-edge energy solutions.

We’ll continue to uphold the high standards that earned us this recognition, ensuring that every customer enjoys the seamless, high-performance energy experience Tesla is known for.

It’s free to inquire. Get a quote from one of Tesla’s top 2% most trusted installers in Perth, Western Australia.

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Discover the benefits of working with a Tesla Premium Certified Installer. If you’re thinking about installing a Tesla Powerwall, expanding your solar capacity, or exploring energy storage for the first time, the team at Perth Solar Warehouse is here to assist you in taking the next step

📞 Contact us today to speak with a Tesla-certified expert or explore our Tesla Powerwall solutions to start your journey toward energy independence.

Perth Solar Warehouse — Proven. Certified. Tesla Premium.

Powerwall Solar Batteries Tesla

PSW Achieves Bureau Veritas Certification ISO 9001, 45001, 14001

Perth Solar Warehouse is proud to announce a significant milestone in its journey toward operational excellence and industry leadership: the achievement of ISO 9001 (Quality Management), ISO 45001 (Occupational Health and Safety Management), and ISO 14001 (Environmental Management) certifications. Attaining all three internationally recognised standards simultaneously demonstrates the company’s strong commitment to quality, workplace safety, and environmental responsibility.

In a rapidly growing and competitive renewable energy market, trust and reliability are key factors that customers look for in a solar provider. These ISO certifications reaffirm Perth Solar Warehouse’s dedication to delivering superior solar energy solutions backed by robust management systems and a culture of continuous improvement.

“Achieving these three certifications at once demonstrates that our team is deeply committed to doing things the right way—by our customers, our people, and the planet,” said Derek McKercher, Director. “This is more than a badge of honour; it reflects the standards we hold ourselves to every day.”

The ISO 9001 Quality Management System certification signifies that Perth Solar Warehouse consistently delivers products and services that meet both customer expectations and regulatory requirements. This framework ensures every process—from initial consultation and system design to installation and customer support—is guided by a focus on precision, reliability, and continuous improvement.

For customers, this translates into confidence that their solar investment is supported by proven systems and verified quality assurance practices at every stage.

The ISO 45001 Occupational Health and Safety Management System certification underscores Perth Solar Warehouse’s commitment to protecting the well-being of its employees, contractors, and partners. The certification ensures that rigorous safety standards and proactive risk management are integrated into every aspect of operations—from warehouse logistics to rooftop installations.

This achievement highlights the company’s belief that the drive for renewable energy should never come at the expense of worker safety. It also reinforces the message that Perth Solar Warehouse values its people as its greatest asset.

As a renewable energy provider, environmental responsibility is central to Perth Solar Warehouse’s mission. The ISO 14001 Environmental Management System certification formally recognizes the company’s efforts to minimize environmental impact, reduce waste, and promote sustainability across its operations.

From responsible sourcing and recycling programs to energy-efficient facility practices, the certification confirms that environmental care is built into the company’s DNA—not just its products.

This triple certification achievement marks the beginning of a new chapter for Perth Solar Warehouse. As the company continues to expand its reach and impact in Australia’s renewable energy landscape, maintaining and building upon these standards will remain central to its strategy.

“Our customers trust us to deliver energy solutions that are not only effective but also responsible,” said Derek McKercher. “These certifications affirm that trust—and strengthen our resolve to keep raising the bar.”

With ISO 9001, ISO 45001, and ISO 14001 now firmly embedded in its operations, Perth Solar Warehouse enters 2025 with renewed confidence and a clear vision: to lead the solar industry through excellence in quality, safety, and sustainability.

Certified under our broader regional trading name, PSW Energy, for enhanced market relevance, Perth Solar Warehouse and PSW Energy are wholly owned cooperative businesses of McKercher Corporation Pty Ltd, EC010771.

Certificate: ISO 9001:2015 | ISO 45001:2015 | ISO 14001:2018

Policy: Health, Safety, Environment, Quality

Organisational acknowledgement: McKercher Corporation | PSW Energy

Bureau Veritas ISO 14001 ISO 9001 ISO45001

Interest-free solar and battery: how the WA Government’s $10,000 loan changes the calculation

The interest-free solar conversation used to begin and end with private finance providers — Brighte, Plenti, HUMM and a repayment plan you arranged through your installer. That model still exists, but it’s no longer the most compelling option for eligible Western Australian households.

Since 1 July 2025, the WA Residential Battery Scheme has included an optional no-interest loan of up to $10,000, administered by Plenti, as part of the state government’s battery uptake program. For households that qualify, this is a structurally different proposition to a vendor-arranged finance product and it warrants its own analysis.

The WA Residential Battery Scheme delivers two financial benefits that can be combined:

The rebate is calculated per kWh of usable battery capacity, capped at 10 kWh:

This rebate stacks with the federal Cheaper Home Batteries Program — a separate federal initiative that delivers approximately a 30% upfront discount on eligible batteries (for usable capacity between 5 kWh and 100 kWh, claimable on the first 50 kWh). The combined effect can meaningfully reduce the installed cost before financing is even considered.

Loan Amount

Term

Interest

Administered by

Household gross annual income must be under $210,000. Credit assessment applies.

The loan can be used to cover the battery and related equipment, including inverters and solar panels, where installed as part of a battery package under the scheme.

💡 Important: Participation in a Virtual Power Plant (VPP) is mandatory to access the rebate and loan. The VPP agreement period is two years, after which households can opt out.

The same honest question that applied to private interest-free solar finance applies here — perhaps more so, because the rebate and loan together are more likely to produce a genuine net benefit than a solar-only repayment plan ever was.

The original challenge with solar-only interest-free deals was misalignment between generation and consumption. Solar produces during the day; most households consume energy in the morning and evening. Without a battery, bill savings depend almost entirely on how much daytime load you can shift — an effort that requires behavioural change and, ideally, a consumption monitor to guide decisions.

A battery changes that dynamic. It captures daytime solar generation and makes it available after sundown, when household demand typically peaks and grid energy costs the most. In the Synergy area, the DEBS export rate during peak hours (3pm-9pm) is 10c/kWh — a fraction of what you pay to import at the same time. A battery earning you avoided imports is almost always more valuable than exporting to the grid at 10c and buying back at the retail rate.

This is why the WA scheme’s structure makes sense for many households: it finances the component — a battery — that most directly closes the gap between what solar produces and what you actually save.

State financing doesn’t change the physics of a solar-battery system, and the consumption profile logic remains valid.

Load shifting still improves outcomes. Running your dishwasher in the morning rather than after dinner, pre-cooling your home during midday solar production, and timing high-draw appliances to avoid evening peak periods all reduce how much you draw from the battery (and the grid) during expensive hours.

An energy consumption monitor — from around $390 added to the system — remains one of the highest-value additions to any solar installation. It puts generation, import, and export data in one place, replacing guesswork with actionable information. Perth Solar Warehouse recommends this addition wherever provision allows.

The Synergy Midday Saver tariff is also worth understanding if you’re evaluating load management options, as it offers the lowest cost-per-kWh during daytime hours for eligible customers.

Perth Solar Warehouse, operating under the PSW Energy brand, is listed by Plenti as an accredited WA Residential Battery Scheme vendor in the Synergy service area. Homeowners don’t lodge rebate applications directly — accredited vendors handle this through the scheme’s approved channel.

Confirm your eligibility: Synergy or Horizon Power account, residential property, new battery with at least 5 kWh usable capacity, willingness to join a VPP. For the loan, household gross income under $210,000.
Request a quote from Perth Solar Warehouse: Note whether you're considering the no-interest loan. We'll confirm approved product combinations and itemise the rebate separately in your quote.
Loan application (if applicable): Plenti will contact you to complete income verification and credit assessment. Have your most recent tax return accessible — scheme guidance references this — for income verification.
Installation and VPP onboarding: Timing constraints apply once approval is confirmed. Book installation promptly — conditional approval is not open-ended.

The scheme is funded for up to 100,000 rebates. Availability is finite.

Feature	WA Scheme (rebate + loan)	Private finance	No finance
Upfront cost reduction	Govt rebate + federal STC discount	Nil	Nil
Loan interest	0% fixed (scheme-administered)	0% vendor-arranged (merchant fees may apply)	n/a
Income test	Yes (under $210,000 gross)	Generally no	n/a
Battery included	Required	Optional	Your choice
VPP required	Yes (2-year minimum)	No	No
Best suited to	Eligible households wanting battery + govt-backed finance	Solar-only or flexible product preference	Households with capital to deploy outright

💡 Note: Perth Solar Warehouse remains an authorised vendor with Brighte and Plenti for private interest-free finance arrangements, where these better suit a customer’s situation or product preference.

Request a battery quote from Perth Solar Warehouse and note whether you’d like to explore the WA scheme’s no-interest loan. We’ll confirm your approved product options, calculate the combined rebate value, and lodge the application through the correct channel.

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WA Residential Battery Scheme guidance, DEBS pricing schedule (effective 1 July 2025), and federal Cheaper Home Batteries Program information current as of April 2026. Scheme availability and rebate rates are subject to change – verify current program status before proceeding.

interest-free solar no-interest loan Plenti Residential Battery Scheme Synergy VPP WA battery rebate

EUPD Research Top Installer Awards 2024 and a Digital Revolution in Solar

EUPD Research Top Installer Awards 2024 presentation banner (left to right): Daniel Fuchs, Nicole Bilman and Derek McKercher holding the EUPD Installer Award 2024 shield

The vibrant atmosphere of Melbourne’s Cargo Hall Southbank recently played host to the 2024 EUPD Research Top Installer Awards Australia. Amidst industry leaders and innovators, Perth Solar Warehouse once again claimed a top spot, marking a second consecutive year as an award recipient. This achievement underscores a commitment to customer satisfaction, quality installations, and innovative solutions in the Australian solar market. The awards ceremony highlighted Perth Solar Warehouse’s commitment to setting the benchmark for innovation and excellence in the industry.

EUPD Research, a globally respected authority in market research, employs a meticulous approach to identify top installers. Their methodology goes beyond simple sales figures, delving into the heart of customer experience. By combining customer satisfaction surveys with installation volume data, EUPD ensures that awardees are not just successful installers, but trusted partners in their customers’ solar journey.

For Perth Solar Warehouse, this recognition powerfully validates a unique approach to the market through a pioneering digitally enhanced buying experience.

Perth Solar Warehouse understands that navigating the world of solar can be daunting for many homeowners. The answer? A cutting-edge digital platform that simplifies the entire process, making it more transparent, convenient, and customer-centric. This innovative approach has resonated with customers, contributing significantly to high satisfaction ratings and, ultimately, EUPD Research Top Installer Award 2024 recognition.

Needing an in-home consultation to quote a modern solar energy system accurately is a myth in 2024. In 2010, solar panels were more expensive, and there was a lack of accurate design software. Therefore, precise sizing and a more consultive process for customer needs were valid (today, in-home ‘consultants’ don’t even measure from the on roof – they’re there to sell you). With most system sizes now standardised and spare time more elusive than ever, the need to schedule on-site quotes can be more of a hindrance for the astute shopper seeking a proven solution.

One step further, we can improve value through digitalisation. Sales consultations are rarely free, and the cost (commission) is often embedded in an inflated price for the end user. If a remote site assessment proves inconclusive, a Perth Solar Warehouse technician conducts a site review based on a customer’s preferred system. Most importantly, the quoted/contracted price is always the final price, earning Perth Solar Warehouse a strong community and local trust for over a decade.

Growing consumer appeal:

Transparency: Customers gain access to clear and detailed information about products, pricing, and installation processes, eliminating any ambiguity and fostering trust.
Convenience: The entire journey, from initial inquiry to system design and installation schedule, can be managed online, saving customers valuable time and effort.
Personalised Solutions: The digital platform allows customers to explore various options and customise their solar systems to perfectly match their energy needs and budget.
High-Quality Outcomes: By streamlining the backend process and ensuring clear communication, Perth Solar Warehouse minimises potential errors and provides a smooth and efficient installation experience.

This commitment to a seamless digital experience aligns perfectly with the values recognised by the EUPD Top Installer award. By prioritising customer satisfaction and embracing innovation, Perth Solar Warehouse is meeting the demands of today’s tech-savvy consumers and setting a new standard for the industry.

Need an award-winning comparison? Get a hassle-free Perth Solar Warehouse quote.

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Perth Solar Warehouse’s EUPD Research Top Installer Award 2024 success is further amplified by the fact that it is one of the few Australian solar companies with proven female leadership, Nicole Biman. Nicole’s leadership offers balance in a predominantly male-led industry and fosters a company culture prioritising customer-centricity, employee empowerment, and a passion for sustainable solutions.

Read more about Nicole Bilman on McKercher Corporations acknowledgment.

While Biman’s leadership sets the tone, the entire Perth Solar Warehouse team plays a vital role in the continued success. Their dedication to providing exceptional service, from the initial interaction to the final installation, ensures that every customer feels valued and supported. This strong team spirit is palpable and undoubtedly contributes to a high customer satisfaction rating.

Thank you, team! the EUPD Research Top Installer Award 2024 is your recognition as an elite performer in Australia.

Image: Daniel Fuchs (EUPD Research), Nicole Bilman and Derek McKercher on behalf of Perth Solar Warehouse.

Solar and battery technology is progressing more digitally each day, as are customer purchasing preferences. Perth Solar Warehouse connects customers with industry-leading sustainable technology on a hassle-free platform that respects the customer through transparency and detail.

Perth Solar Warehouse’s EUPD Research Top Installer award is a testament to a commitment to excellence in every facet of business. By combining a customer-focused approach with digital buying and management solutions, we are shaping the future of solar in Australia and inspiring other companies to raise the bar through modern convenience. As Australia transitions towards more renewable energy, Perth Solar Warehouse’s innovative approach is a shining example of how technology, transparency, and teamwork can pave the way for a brighter, more sustainable future.

EUPD Research

Western Australia’s first Tesla Powerwall 3 arrives ushering in a new era

Western Australia's first Tesla Powerwall 3 unit pictured in it's reusable delivery case inside the Perth Solar Warehouse showroom - Bibra Lake

Perth, Western Australia – September 17, 2024, marked a significant day for renewable energy in Perth as Perth Solar Warehouse proudly received the first Tesla Powerwall 3 in the city. This milestone event signifies a leap forward in energy storage technology, offering Perth residents greater control over their energy consumption and a more sustainable future.

Tesla Premium Installer. Get your copy of our latest catalogue for Perth’s best Powerwall 3 deals.

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Perth Solar Warehouse showcase the first Tesla Powerwall 3 in WA
Powerwall 3 specifications transform previous solar limitations
Virtual power plant (VPP) ready - watch this space
5 kW software locked inverter - upgradable when local regulation changes

The Tesla Powerwall 3 is the latest iteration of Tesla’s revolutionary home battery system. Known for its sleek design, advanced features, and seamless integration with solar panels, the Powerwall 3 is poised to change how Perth homeowners manage their energy needs.

Perth Solar Warehouse, a leading solar and battery solutions provider in Western Australia, was thrilled to be the first to receive this groundbreaking product. “We are incredibly excited to introduce the Tesla Powerwall 3 to Perth,” said Derek McKercher, Director of Perth Solar Warehouse. “This cutting-edge technology represents a major step towards a more capable and resilient sustainable energy future for our city.”

The Powerwall 3 boasts several improvements over its predecessors. Its increased storage capacity allows homeowners to store more solar energy, reducing their reliance on the grid and saving on electricity bills. The new Powerwall also features a faster charging rate, ensuring it can quickly replenish its reserves even on cloudy days.

One of the most significant advantages of the Powerwall 3 is its ability to provide backup power during outages. With Perth’s increasingly unpredictable weather patterns, power outages are becoming more frequent. The Powerwall 3 offers peace of mind, ensuring that essential appliances and devices remain operational even when the grid goes down.

The arrival of the Tesla Powerwall 3 in Perth will accelerate the broader adoption of solar and battery systems as an all-in-one solution towards holistic energy security. As more homeowners recognise the benefits of energy independence and resilience, the demand for these solutions will likely surge due to continuous grid electricity costs.

Tesla Trusted Installer. Premium-certified installers make up the top 2% of installers.

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Perth Solar Warehouse is committed to supporting this transition. The company offers comprehensive solar and battery installation services, ensuring homeowners can seamlessly integrate the Powerwall 3 into their existing systems. Perth Solar Warehouse’s team of experts also provides ongoing maintenance and support, ensuring that customers can maximise the benefits of their investment.

The Tesla Powerwall 3 is more than just a battery; it represents a shift in how Perth residents think about energy. It empowers homeowners to take control of their energy consumption, reduce their carbon footprint, and create a more sustainable future for themselves and their community.

Perth Solar Warehouse is proud to be at the forefront of this movement. The company’s dedication to providing innovative and sustainable energy solutions is helping to shape a brighter future for Perth. With the arrival of the Tesla Powerwall 3, Perth residents can now embrace a new era of energy storage, one that promises greater energy independence, resilience, and a cleaner environment for all.

As Perth continues its journey towards a more sustainable future, the Tesla Powerwall 3 is poised to play a pivotal role. It is a testament to the power of innovation and the potential of renewable energy to transform our lives. With Perth Solar Warehouse leading the way, Perth residents can now embark on a path towards a cleaner, more resilient, and energy-independent future.

The Tesla Powerwall 3 boasts impressive specifications that make it a highly desirable energy storage solution for West Australian homeowners:

Integrated Solar Inverter: A key feature of the Powerwall 3 is its built-in solar inverter, streamlining installation and reducing overall system complexity. This allows for direct connection to solar panels, maximising efficiency and minimising energy loss.
Power Output: With a continuous power output of 5 kW in Perth, Western Australia (Western Power requirements), the Powerwall 3 can comfortably handle the energy demands of most households, even during peak usage times. It can also support up to 20 kW of solar panel input, making it suitable for larger solar installations.
Compact and Scalable Design: The Powerwall 3 maintains its predecessors’ sleek and compact design while offering improved scalability. Three more 13.5 kWh battery units can expand it to a total capacity of 54 kWh, allowing homeowners to tailor their energy storage to their specific needs.
Enhanced Backup Capabilities: During power outages, the Powerwall 3 provides seamless and reliable backup power, ensuring that essential appliances and devices remain operational. Its quick backup transition time minimises disruption and ensures a smooth power supply.
Smart Energy Management: The Powerwall 3 seamlessly integrates with the Tesla app, allowing homeowners to monitor and manage their energy usage in real time. They can track their solar production, battery levels, and grid consumption, optimising their energy usage and maximising savings.
Virtual Power Plant (VPP) Compatibility: The Powerwall 3 is compatible with VPP programs, allowing homeowners to contribute their excess energy to the grid and earn additional income. This benefits individual households, helps stabilise the grid, and promotes a more sustainable energy future.
Durability and Longevity: The Powerwall 3 is built to last, with a 10-year warranty and a design that is resistant to harsh weather conditions. Its robust construction ensures that it can withstand the Australian climate and provide reliable performance for years to come.

The Tesla Powerwall 3 boasts impressive specifications that make it a highly desirable energy storage solution for West Australian homeowners:

AC Electrical Specifications:

Continuous Power: up to 11.04 kW*
Peak Power: 22 kW for 10 seconds
Nominal Voltage: 230 V, single-phase
Nominal Current: 48 A
Backup Loads: Up to 185 A LRA
Grid Services: Virtual Power Plant (VPP) compatible

* DNSP regulated. Western Power network: 5 kW limit.

DC Electrical Specifications:

Max. PV Input Power: 20 kW
Max. PV Input Current (IMP): 26 A
Max. PV Input Current (ISC): 30 A
Max. DC Voltage: 600 V
MPPT Voltage Range: 150-550 V

Battery:

Usable Energy: 13.5 kWh
Chemistry: Lithium-ion LFP
Round-trip Efficiency: 94.5%
Warranty: 10 years unlimited cycles

Inverter:

Type: Integrated DC-to-AC inverter
Efficiency: 97.5% CEC weighted

Physical:

Dimensions (H x W x D): 1105 mm x 609 mm x 193 mm (including glass front cover)
Weight: 130 kg
Mounting: Floor or wall-mounted, indoor or outdoor
Operating Temperature: -20°C to 50°C (performance may be de-rated above 40°C)
Enclosure Rating: IP65 (dust-tight and protected against water jets)

Other:

Connectivity: Wi-Fi, Ethernet, Cellular (optional)
Gateway Requirement: Tesla Gateway 2 is required for monitoring and control
Certifications: AS/NZS 4777.2, AS/NZS 5033, IEC 62109-1, IEC 62109-2
Safety Features: Overcurrent protection, overvoltage protection, overtemperature protection, and more

Tesla Powerwall 3 datasheet

Overall, the Tesla Powerwall 3’s standout specifications make it a compelling choice for Australian homeowners looking to embrace renewable energy and achieve greater energy independence. Its integrated solar inverter, increased power output, scalability, and intelligent energy management features offer a comprehensive solution for powering homes efficiently and sustainably.

Teslarati: Tesla Powerwall 3 is now available in Western Australia

McKercher Corporation: Tesla Powerwall 3 Arrives at Perth Solar Warehouse

Powerwall 3 Solar Batteries Tesla

Silicon wafer prices rise, wholesale module prices likely to follow

Advanced stage of silicon wafers within the solar module manufacturing process, under a red light with an engineer observing through a processing window to identify that silicon wafer prices have stabilised and and downstream effect to overall module costs is coming.

The wholesale downward trend of solar module prices on a cost-per-watt level had to end eventually, and the tide may have just turned, citing an August increase in silicon wafer prices by LONGi and TCL Zhonghuan—two large manufacturers of silicon wafers used in solar panels. This comes as an overdue respite for solar module manufacturers seeking a return to profitability in 2025. So, what does this mean for the future solar energy landscape locally?

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LONGi and TCL Zhonghuan raise silicon wafer prices, reports PV Magazine
Improved international solar panel demand
Likely increase 'cost p/Watt' of record low wholesale solar panel prices
Reduced subsidy value and increased panel prices will affect system affordability (Cost per/Watt) in 2025

Like all global markets, the solar energy market has endured an interesting period, with continued ripples affecting purchasing certainty at scale: COVID-19, the Russia-Ukraine conflict, US Manufacturing laws, and the overall complex international landscape, which affect supply chains in a start-stop, start-stop, start-again motion.

The recent increase in silicon wafer prices is a reprieve for manufacturers forced to sell excess stock below the cost of manufacture. Demand for silicon wafers is a sign that the previous market saturation has cleared, and pressure for increased production of the fundamental component used to build solar panels has returned internationally among a broader segment of solar panel manufacturers. Interestingly, a turn towards higher solar module prices is good for purchasers.

Image: Whole cell Silicon wafer used in solar panel construction.

Considering the new solar panel warranty is at least 25 years for residential rooftop solar panels, system owners need a manufacturer that is more likely to be around in 25 years. When writing, most solar panels at wholesale in Australia are close to or below the manufacturer’s production cost. All businesses have a limited window to exist without margin. An increase in silicon wafer prices signals that many remaining manufacturers have more likely weathered the loss and resumed taking new orders.

Forecast: Leading manufacturers will return to profitability in 2025/26 as demand firms through more countries adopt a more carbon-neutral future. Smaller module manufacturers will experience an enduring period of uncertainty.

1. The Small Technology Certificate (STC) value used to subsidise solar energy system costs in Australia will be reduced from the 1st of January 2025. Example: A $38 Small Technology Certificate value and 440W solar panel for multiplication of the most common system sizes in the Perth and Bunbury region of Western Australia:

3.9 kW

3.9 kW = $1,456 – 2024 installation
3.9 kW = $1,248 – 2025 installation

6.6 kW

6.6 kW = $2,426 – 2024 installation
6.6kW = $2,088 – 2025 installation

10.5 kW

10.5 kW = $3,882 – 2024 installation
10.5 kW = $3,327 – 2025 installation

13.2 kW

13.2 kW = $4,852 – 2024 installation
13.2 kW = $ 4,159 – 2025 installation

19.8 kW

19.8 kW = $7,279 – 2024 installation
19.8 kW = $6,239 – 2025 installation

39.6 kW

39.6 kW = $14,577 – 2024 installation
39.6 kW = $12,478 – 2025 installation

99.8 kW

99.8 kW = $36,717 – 2024 installation
99.8 kW = $30,908 – 2025 installation

2. Should silicon wafer prices continue to increase, downstream newly produced module costs will increase. Silicon wafers are a fundamental component of the greater global demand for improved sustainable energy resources in areas with abundant sunlight than alternative sustainable energy sources.

As the August 2024 PV Magazine article Chinese PV Industry Brief: Longi, TCL Zhonghuan Raise Silicon Wafer Prices points out, major silicon wafer manufacturers Longi and TCL Zhonghuan have recently increased their prices. This is due to several factors, including rising polysilicon prices and strong demand for solar panels. Price increases are expected to continue, which could lead to higher solar panel costs depending on alternative local market factors.

Image: Raw material Poly Silicon rock used in solar panel construction.

Like any market saturation, prices fall as the demand to move excess stock becomes more critical. Astute investors identify opportunities where rebound potential exists. With record-low wholesale cost p/Watt module prices and improved global demand for the fundamental component required for manufacturing solar panels, it may well be that a more opportunistic moment for a solar energy investment exists today.

Perth Solar Warehouse is committed to providing our customers with the latest information on the solar industry. If you are looking for local advice on a solar energy system that matches your needs without overcomplication, we can assist.

PV Magazine: Chinese PV Industry Brief: Longi, TCL Zhonghuan raise silicon wafer prices

McKercher Corporation: Silicon Wafer Prices Rebound: Implications for Solar

Solar Panels

Introducing the Aiko Neostar 2P: A New Standard in Solar Innovation

Perth Solar Warehouse is excited to unveil the latest addition to our solar panel lineup: the revolutionary Aiko Neostar 2P series. This groundbreaking panel, now available to order, showcases Aiko’s commitment to pushing the boundaries of solar technology. The most appealing aspect of the Aiko Neostar 2P is that it’s remarkably affordable for world-leading specifications compared to alternative ‘innovation’ brands.

Aiko discounts await. Get your copy of our latest catalogue for Perth’s best Aiko solar package deals.

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The Neostar 2P isn’t just another solar panel; it’s a paradigm shift. Its cutting-edge ABC N-type cell technology achieves an exceptional efficiency rating of up to 24.3% module efficiency, outperforming many conventional home solar panels, which hover around 22.5% efficiency. Presenting as one of the world’s most efficient solar panel designs, customers can now generate even more energy per square meter, maximizing their rooftop’s potential even in Perth’s diverse weather conditions.

Durability is equally paramount. The Neostar 2P’s robust construction ensures long-lasting performance, backed by Aiko’s comprehensive 25-year product and 30-year performance warranty with reduced degradation. Its sleek, black-frame busbar-free design adds a touch of sophistication, improving integration with modern architecture.

In the video above, Aiko’s revolutionary partial shading optimisation improves yields in less optimal conditions, such as obstruction, compared to standard format ‘N-Type TOPCon’ solar panels. For Perth homeowners, the new Aiko Neostar 2P presents an exciting opportunity to embrace a new era of solar efficiency. Its advanced features boost energy production and provide peace of mind, knowing your investment can deliver beyond expectation.

At Perth Solar Warehouse, we’re dedicated to providing top-tier solar solutions. The Aiko Neostar 2P perfectly embodies this ethos, offering a premium product that delivers exceptional value. Stay tuned to our social media channels to witness firsthand how this solar panel redefines solar excellence in 2025.

Highlights:

Unmatched Efficiency: Harness ABC N-type technology for maximum energy production from an area.
Superior Durability: Leading durability specifications ensure years of reliable performance.
Elegant Aesthetics: Streamlined black-frame, busbar free design complements any rooftop.
Industry-Leading Warranties: Enjoy peace of mind with Aiko’s comprehensive 25-30 year guarantee and Perth Solar Warehouse’s local longevity.

Embrace the future of solar with the Aiko Neostar 2P, now available at Perth Solar Warehouse in the improved maximum system size multiplying 470W format. We’re excited to help you embark on your solar journey with confidence matched with high-end performance.

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Now available to order within a Perth Solar Warehouse solar package is the 470W version of the Aiko Neostar 2P. The most efficient residential solar panel on release at 23.6%, the 470W variant is as close to the ideal maximum system size multiplier (without batteries) currently available in Australia. It’s a powerhouse of efficiency and durability, packed with energy yield-improving features to maximise your solar energy harvest:

Electrical Characteristics (STC):

Maximum Power (Pmax): 470W
Open Circuit Voltage (Voc): 40.89 V
Short Circuit Current (Isc): 14.61 A
Maximum Power Voltage (Vmp): 33.90 V
Maximum Power Current (Imp): 13.87 A
Module Efficiency: 23.6%
Power Tolerance: 0~+3%

Mechanical Specifications:

Dimensions: 1757 mm x 1134 mm x 30 mm
Weight: 21.5 kg
Cell Type: N-Type ABC
Number of Cells: 108 (6×18)
Frame: Anodized aluminium, Black
Front Cover: 3.2 mm tempered glass
Connector: MC4-Evo2
Cable: 4mm² (IEC) / 12AWG (UL), 1200mm

Temperature Ratings & Coefficients:

Operating Temperature: -40°C to +85°C
Temperature Coefficient of Pmax: -0.26%/°C
Temperature Coefficient of Voc: -0.22%/°C
Temperature Coefficient of Isc: +0.05%/°C
NOCT (Nominal Operating Cell Temperature): 45±2°C

Warranties:

Product Warranty: 25 years
Performance Warranty: 30-year linear

Warranty download

Additional Features:

High-Temperature Restriction: Reduces fire risk
Partial Shading Optimisation: Maintains performance even with partial shade
Micro-crack Resistance: Enhances durability
No Front Grid Design: Sleek aesthetics
Better Temperature Coefficient: Improved performance in hot climates

Aiko Neostar 2P datasheet

The stand-out specifications of the Akio Neostar 2P are the [residential] common format dimensions (1757 mm x 1134) and power output (470W). Achieved through an improved module ABC N-Type architecture which boasts an incredible 23.6% module efficiency. The more proportionate sub 22 kg (Neostar 2P—21.5 kg) weight class is ideal for installer manhandling and improved residential structural integrity with less concentrated weight compared to similar power class solar panels of increased weight.

Efficiency is one thing in standard test conditions, but temperature coefficients better assist performance guidance for each degree above 25°C cell temperature. The Aiko Neostar 2P is of an elite calibre at -0.26%/°C (lower the better).

Beyond enhanced aesthetics, these specifications highlight the Aiko Neostar 2P’s cutting-edge technology and performance, making it an excellent choice for Perth homeowners seeking a high-efficiency, reliable solar panel by a world-class brand.

Aiko Solar Neostar Solar Panels

How much does it cost to add more solar panels in Perth?

There’s no hiding; finding an installer willing to add more solar panels can be challenging for modern solar energy systems. Accountable for 90% of solar energy systems in Perth, WA, solar panels within a string inverter system must be matched for similar electrical characteristics, assisting uninhibited electrical flow throughout the solar array. Coupled with generational solar panel dimension and characteristic changes, adding more solar panels to your existing solar energy system can sometimes be more complex than first thought.

In a short period of research, you’ll identify that most solar installation companies want to avoid adding more solar panels to your existing solar energy system and will often default to recommending an entire system upgrade. Yet you have a perfectly functioning system that seems ridiculous to remove and discard based on your commitment to greener energy outcomes.

Indeed, there is a market for adding more solar panels to existing solar energy systems globally, but is it viable in Western Australia?

Image: Perth Solar Warehouse technicians add more solar panels to an existing system.

A defection among installers of adding more solar panels to your existing system exists in two forms:

1) The cost of adding more solar panels vs current market new system options due to available subsidies.

2) Electrical characteristics (mismatch) among newly available solar panels since you installed the original solar energy system.

3) Scarcity of previous-generation solar panels for ideal compatibility.

Within, we’ll explore what has changed since you installed your solar energy system and the current market prices of adding more solar panels vs removing and replacing with an entirely new solar energy system for the greater Perth, Western Australia region.

Seeking a quote? We know what it takes to add more solar panels in Perth, Western Australia.

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Consider the output of your current solar panels. Standard previous-generation solar panel sizes on Perth homes are 250W, 275W, 330W, 370W, 390W, and 415W. Finding a similar-output solar panel is essential if adding it to a string [inverter] solar system. As the more affordable solution, these account for approximately 90% of solar installations in Western Australia.

Power output is one of many considerations systems designers need to make. Irrelevant to the brand, solar panels have vastly different electrical characteristics depending on their cell architecture (60 cells, 72 cells, 120 half-cells, 144 half-cells, shingled, etc.). The internal solar cell foundation (poly or mono) and configuration (architecture) are important aspects affecting two essential string inverter design elements, Isc and Voc.

Isc: Short Circuit Current
Voc: Open Circuit Voltage

These two figures are essential to a string’s solar panel compatibility. The closer the better for optimal system performance when matching: Brand (if possible) and cell architecture.

In short: If similar solar panels can’t be sourced, adding more solar panels to your existing string-wired solar system could have minimal to negative benefits.

Image: Perth Solar Warehouse technician adds more solar panels as part of a system upgrade.

Your previous solar energy system may have been installed according to prior electrical standards. When a technician alters the existing system, they must notify with an Electrical Safety Certificate that the alteration/addition meets current electrical standards. Their personal and company licencing ensures your property is insured, and the statement must be correct. It will be considered a significant alteration for notifiable work (an increase of power class), and the system it incorporates must meet the current standards.

In short: The cost of adding more solar panels becomes elevated when an existing system upgrade is required.

When adding more solar panels, there are different warranty layers of obligations to consider, as the last person who worked on the system will always choose to absolve themselves from warranty ownership of the existing system if it is within a particular warranty period. We’ll always encourage building your energy ecosystem alongside a proven local installer to ensure your original installation warranty remains uncompromised. It is recommended that you consult the prospect of adding more solar panels with your original installer first.

Perth Solar Warehouse compliments future system upgrades and improved warranty assurance with 20 years of business operational history and one of the most proven local guarantees.

In short: Adding more solar panels to an existing system may affect the original installer’s warranty.

Discover hassle-free solar. We’re a proven local WA company measured x time. Google & SolarQuotes 4.9/5.

Express Quote

Does the existing system qualify for the current solar rebate (if available) to aid the reduced cost of adding more solar panels? The Small Technology Certificate (STC) subsidy is determined by the ability of your sustainable energy system to offset carbon emissions effectively. If your existing solar energy system doesn’t meet the current Australian and local standards, the cost of adding more solar panels will become 100% reflective of the actual price.

Further complicating layers to subsidy qualification, the existing system’s inverter must be on the current approved CEC list of inverters. Past approvals don’t qualify. The new solar panels must also be on the current CEC list of approved solar panels.

Should the existing system qualify for the current period Small Technology Certificates (subsidy), adding more solar panels can often be calculated at a cost-per-watt, better assisting with normalising residential solar energy system costs.

As a gauge, the cost to add more solar panels to an existing string-wired solar system in the greater Perth region of Western Australia ranges from $1 to $2 per/Watt.

Example: On the more economical end of the spectrum, a 440W solar panel upgrade will likely cost $440 after qualifiable subsidy discounts at the point of sale. Always seek a site-specific quote for accuracy. We can assist.

Remove and replace your existing system with Perth Solar Warehouse starting from $.50c per/Watt. 6.6 kW Solar ›

Sunwiz Awards 2024: Perth appreciates Perth Solar Warehouse’s customer-centricity, local public knowledge base and high-quality outcomes. Best solar company (Australia) by customer satisfaction data [2023,24].

1) Avoid the subsidy: It’s an option, but specific standards for energy generation supply equipment must still be adhered to. As a guide, the cost of adding solar panels with the subsidy applied often offsets the panel cost. The price is likely to be similar.

2) Remove the current system. Go new. It’s now the most popular method towards expanding a solar energy systems capacity in Perth, Western Australia. Starting from 50c per/Watt, what should be the seemingly more expensive option can often cost less while improving user-system experience, performance and function with more modern technology.

3) Add a new system alongside your existing system. If choosing this option, try to match inverter brands where possible. Matching like-for-like inverter brands should simplify system monitoring through the one performance monitoring portal. Due to the current subsidies and reduced cost of high-power inverters, this option may prove similar to removing the current system and starting fresh.

No matter your preference for adding more solar panels to increase the overall solar system generating capacity, consider Perth Solar Warehouse, the researched shoppers’ choice for solar and batteries, with our renowned no-hard-sell guarantee. After all, that’s how you found this post. One of Perth’s few no-pressure-to-buy installers, follow the path of least resistance that thousands before you have experienced and enjoyed. We can assist you with the best direction for adding more solar panels. It costs nothing to ask.

Solar Panels

Microinverters or string inverters: what’s best for Perth homes?

Enphase Inverters by Perth Solar Warehouse

The inverter matters more than the panels. It converts DC from your roof into AC that your home can use. Choose wrong, and you lose performance every day for 25 years.

Three architectures exist: string, microinverter, and hybrid. This guide covers how they work, what they cost, and which suits your Perth roof. Perth Solar Warehouse installs string and hybrid inverter architectures from Fronius, Sungrow, Goodwe, Sigenergy, and Tesla. We don’t stock microinverters, which is why this guide can be honest about when they’re the right choice and when they’re not.

The inverter matters more than the panels. Same panels on a different inverter will produce different results for 25 years. Choose this component carefully.
Hybrid is the real 2026 question, not micro vs string. If a battery is on your roadmap within five years, a hybrid inverter avoids paying twice when you add storage later.
Shading is the only reason to pay the microinverter premium. On unshaded Perth rooftops, a quality string inverter captures virtually the same energy at 25 to 40 percent lower cost.
CSIP-AUS compliance from May 2026 is non-negotiable. All string and hybrid inverters in the Perth Solar Warehouse range comply. Microinverter systems depend on the gateway, so confirm before committing.

Solar panels produce DC electricity. Your home runs on AC. The inverter converts one to the other. Every system needs this conversion; the question is where it happens and how many devices do the work.

One box on your garage wall. All panels wired in series feed into this single inverter for DC-to-AC conversion. It’s the most common type in Perth and across Australia: proven, cost-effective, and well-suited to the majority of WA rooftops.

Most Perth homes have pitched, north-aspect roofs with minimal shading. On these roofs, a string inverter captures virtually the same energy as a microinverter at significantly lower cost.

Strengths: Lowest upfront cost ($1,000–$2,500 installed on a 6.6 kW system), simple one-device installation, easy wall-mounted servicing, decades of proven field reliability.
Trade-offs: One shaded panel drags down the entire string. 10–12 year warranty means budgeting for a mid-life replacement. System-level monitoring only. Single point of failure.
Best for: Unshaded roofs, one or two orientations, budget-first installs.

A small inverter mounts behind each panel, converting DC to AC independently. Panels are wired in parallel; each operates as its own power plant. Enphase (IQ8 series) dominates the market; Hoymiles and APsystems are emerging alternatives.

The honest take for Perth: On an unshaded roof, the majority of Perth metro homes, the performance gap between microinverters and a quality string inverter is marginal. The 25-year warranty is genuine, but the premium is hard to justify without real shading. Clear roof = string or hybrid. Shaded roof = microinverters earn it.

Strengths: Panel-level independence, 25-year Enphase warranty (no mid-life replacement), panel-level monitoring, easy expansion, lower DC voltage on roof.
Trade-offs: 30–50% higher upfront cost ($3,000–$6,000 more on a 6.6kW system), 15 roof-mounted components to maintain, roof access required for servicing, and battery integration requires a separate AC-coupled unit.
Best for: Shaded roofs. Each panel works independently, so shade on one has zero impact on the others. On heavily shaded roofs, that’s ~10 to 25% more annual energy than a string inverter on the same roof.

Perth Solar Warehouse does not stock Enphase. Our range focuses on hybrid-capable inverters with battery integration, reflecting how most Perth systems are designed in 2026. If a shading analysis shows that microinverters are the best fit, we’ll let you know and recommend an installer who carries them.

A hybrid does everything a string inverter does, plus manages battery storage in one unit. No separate battery inverter needed. This is what Perth Solar Warehouse installs most in 2026: battery attachment rates are rising, Synergy’s DEBS makes time-shifting valuable, and a hybrid future-proofs your system.

Hybrid brands PSW installs: Fronius Gen24 (passive cooling, BYD and Fronius Reserva pairing) · Sungrow SH-RS/RT (SBR/SBH battery, excellent value) · Goodwe ESA (all-in-one cabinet, whole-home backup) · Sigenergy SigenStor (premium ecosystem, 25kW DC EV charger) · iStore (Huawei-manufactured, Malaga WA support) · Tesla Powerwall 3 (All-in-one solution, Tesla energy ecosystem)

Why hybrid is the real 2026 comparison: The traditional micro vs string debate misses the point for most Perth homes. If you’re considering battery storage within five years, a hybrid saves you from replacing your inverter or adding an expensive AC-coupled battery later. With DEBS paying variable export rates, storing daytime solar for evening peak use is where the real bill reduction happens.

Feature	String Inverter	Microinverter	Hybrid Inverter
Upfront cost (6.6kW system)	$1,000–$2,500	$2,500–$4,500	$2,000–$4,500
Warranty	10–12 years	25 years (Enphase)	10–12 years
Shading tolerance	Weakest panel limits string	Each panel independent	Weakest panel limits string
Battery compatible	AC-coupled only (add later)	AC-coupled only	DC-coupled built in (nominated batteries)
Monitoring	System-level only	Panel-level	System-level (some offer panel-level with add-ons)
CSIP-AUS compliant	Depends on make/ model	Depends on gateway/envoy	Yes (all PSW-stocked brands)
Noise	Low	Silent	Low
Expansion	May need inverter resize	Add panels freely	May need inverter resize
Mid-life replacement cost	$1,500–$3,000 at year 10–15	None (25-year warranty)	$2,500–$5,000 at year 10–15
Best for	Unshaded, budget-first	Shaded, complex roofs	Battery-ready, future-proofed

Irradiance: STC Zone 3, among the highest in Australia. Great for generation, but with high year-round operating temperatures. Temperature coefficients matter, and they’re a panel spec, not an inverter spec.

Grid: SWIS network (Western Power + Synergy). Current 5kW single-phase export limit transitioning to 30kVA aggregate under CSIP-AUS from May 2026.

Typical roof: Pitched, single-orientation, minimal shading. This profile suits string or hybrid. Microinverters add value only where shading, multi-plane layouts, or complex hip roofs make string design difficult.

Coastal: Burns Beach to Rockingham — salt mist means IP rating matters. All-in-one units like the Goodwe ESA (IP66) suit outdoor coastal installation better than separate components.

Enphase is the global microinverter leader: 25-year warranty, excellent monitoring, lowest documented failure rates. Perth Solar Warehouse doesn’t stock Enphase because our range is focused on hybrid inverters with integrated battery management, which is how most Perth systems are designed in 2026.

If your roof has shading challenges a hybrid can’t address, we’ll tell you. Honesty is worth more than a sale.

Brand	Type	Positioning	Learn More
Fronius	String + Hybrid (Gen24)	Austrian-made, passive cooling, premium build quality	Fronius inverters Perth
Sungrow	String + Hybrid (SH-RS)	Global #1 by volume, strong value, SBR battery pairing	Sungrow inverters Perth
Goodwe	Hybrid + All-in-one (ESA)	ESA combines inverter + battery in one cabinet, lowest cost per kWh	Goodwe home batteries
Sigenergy	Hybrid + EV integration	Premium ecosystem, 25kW bidirectional DC EV charger, Gold Certified Installer	Sigenergy SigenStor
SMA	String + Hybrid	German engineering, long track record, strong commercial heritage	Contact us
iStore	Hybrid (Huawei-manufactured)	Full home electrification ecosystem, Australian HQ in Malaga WA	iStore inverter and battery

Are microinverters worth the extra cost in Perth?

On most Perth roofs, unshaded, single-orientation, the performance gap is marginal. The 25-year warranty is real, but the 30–50% premium is hard to justify without actual shading. For shaded roofs in leafy suburbs, microinverters recover 10–25% more energy annually, paying back the premium within 3–5 years.

Can I add a battery to a microinverter system?

Yes, via an AC-coupled battery (Franklin WH). Works well but adds cost versus a DC-coupled battery on a hybrid inverter. See our compare solar batteries page.

What happens if my string inverter fails?

The whole system stops until replaced. Covered by 10–12 year manufacturer warranty. Budget $1,500–$3,000 for replacement at year 10–15. Perth Solar Warehouse backs every install with our own workmanship guarantee, one call to Bibra Lake or Neerabup.

Does Perth Solar Warehouse install microinverters?

Not currently. We focus on string and hybrid inverters. If shading analysis shows microinverters are the best fit, we’ll say so and recommend a suitable installer.

Which inverter type is best for a shaded roof in Perth?

Microinverters. Each panel produces independently, so shade on one doesn’t affect the rest. DC optimisers (SolarEdge) offer a middle ground, though PSW doesn’t currently carry SolarEdge.

Unshaded roof + want battery-readiness → Hybrid inverter. Where most Perth homeowners land in 2026.

Unshaded roof + budget-first → String inverter. Cheapest, proven, reliable. Budget for one replacement at year 10–15.

Shaded roof on multiple planes → Microinverter. 10–25% generation gain is real. Get a shading analysis first, don’t guess.

Perth Solar Warehouse designs systems around your roof, not around a single brand. Request a quote, and we’ll recommend the right inverter type with transparent pricing and all applicable rebates included.

Enphase Solar Inverters

Sunwiz Awards 2024: Top 5 WA and a Best Rated Solar Company Australia

Sunwiz Awards 2024 with Derek McKercher in the foreground standing infront of a room full of people with arms crossed and smiling. Sunwiz Awards logos featured in the top left corner

Each year, market intelligence firm Sunwiz compiles solar market data to identify trends better and assist in improved decision-making content from an arbitrary position. Eliminating as many bias points from the methodology as possible ensures a respected annual awards event of significant credibility among industry peers, known as the Sunwiz Awards. Perth Solar Warehouse’s photovoltaic installation performance data from the 2023 calendar year is now available for customer/investor research and review.

Perth Solar Warehouse a Top 5 installer by SPV data—Photovoltaics (Western Australia)
Top 20 Best Rated installer (Australia) - more than 150 reviews [319], 4.85 average
Improved battery appeal reduces photovoltaic market share Q3 & Q4
Top 10% Tesla Powerwall installer (Australia) 362% YoY growth Q3 & Q4

Source [Sunwiz]: PSW is A Top Volume Solar Retailer & Best Rated for 2023 ›

Market share of Solar Panel Verification data reduced from July 2023 due to Perth Solar Warehouse’s limited in-house installation capacity and increased market share of energy storage systems . Nevertheless, Perth Solar Warehouse registered a Top 5 overall traded volume of Small Technology Certificates combining residential and commercial installations, proportional to the total generation capacity of registered photovoltaic modules installed to the grid.

Complementing a voluminous accolade is a 4.85/5 customer satisfaction rating from two key review platforms with more than 150 experiences over the last 12 months. Perth Solar Warehouse ranked 12th overall in Australia—a tricker position for companies to hold with a larger cross-section of customers. Superior customer satisfaction x leading volume is a testament to the PSW customer-centric process that ensures excellent outcomes along the journey. There are over 4000 solar companies nationally, most of whom don’t service Western Australia, so to get into the Top 20 nationally is quite an accomplishment.

Learn about the people behind Perth Solar Warehouse’s success. About ›

A testament to the digitalisation of internal workflow, Perth Solar Warehouse appeals to a wide demographic of local consumers with a multifaceted Sunwiz Award 2024 sweep that complimented high volume and superior customer satisfaction.

Measurement (2023)	Performance	Award
Installation Volume, Solar Panel Validation data	4th Overall Combined Residential & Commercial (WA)	Top 5 Solar Installer Combined, Western Australia
Customer Satisfaction	12th (Australia) Greater than 4.85/5 over 150 reviews	Best Rated Solar Installer Most Popular, Top 20 Australia

Numbers are outstanding visual elements. The great news is that Sunwiz, as a market intelligence provider, is renowned as a source of SPV (Solar Panel Validation) data access. SPV data is based on each solar panel serial number submitted for claiming Small Technology Certificates (subsidy) and is issued to the Australian government’s Clean Energy Regulator to track the scheme’s progress. Perth Solar Warehouse cumulative SPV data by month:

Even though photovoltaic implementation (SPV registration) falls away from first-half trends, in the second half of 2023, energy storage adoption replaces [Perth Solar Warehouse’s] photovoltaic growth with a consecutive Q3: 363% and Q4: 362% Q4—2023 YoY growth in Tesla Powerwall installations (kWh not represented in Sunwiz data). Australia’s Top 10% Tesla Powerwall volume: Tesla Performance Excellence Award ›

Best-rated reports are a little more proprietary. However, as opposed to singular platform (website) customer satisfaction data, Sunwiz measures customer satisfaction data from at least two platforms to better discern patterns over the calendar year. Two platforms where Perth Solar Warehouse customer experiences are measured extensively are Google and SolarQuotes.com.au.

In 2023, Perth Solar Warehouse accumulated 115 SolarQuotes.com.au customer experience with an overall 4.88/5 review average. Delving deeper than most, SolarQuotes.com.au further discerns alternative layers of customer satisfaction. In four alternative layers of customer satisfaction recorded on the SolarQuotes.com.au website, Perth Solar Warehouse customer average scores were evaluated as follows:

Category	Score
Value for money	4.87
Quality of System	4.93
Installation	4.84
Customer Service	4.91

Summary: PSW Eenrgy, Perth Solar Warehouse customer experience summary on SolarQuotes.com.au in 2023.

SolarQuotes.com.au: An overall 4.88 customer experience is considered Legendary with only 10 companies Australia wide attaining such position.

Deeper insight: Using a zoomed-in approach, we understand areas of refinement for future customer experience.

Reviewing Google is always a little more interesting when comparing companies. Take them with a pinch of salt, as anyone can leave reviews. Most importantly, look for variables/comments that make a company appear real—including responses to dissatisfaction. It’s also becoming more apparent to distinguish AI Chatbots in a business’s customer replies (they are often over-evaluated and emphasised; we’re sticking to keeping it personal in 2024). Perth Solar Warehouse attained an average 4.81/5 review rating from 204 Google reviews in 2023. Not all of these reviews were purchasing customers; they also included inquiries. A leading local company, PSW is exposed to up to one hundred daily inquiries for which we always try to assist.

Real companies have real scores.

There is no such thing as a unanimous review score when a significant cross-section of the population is surveyed. We’re consistently improving for the ideal balance of company security, competitive options, premium local support and outstanding customer satisfaction. We’re monitoring satisfaction to a standard. Exceeding customer expectations is our goal, yours is long-term energy security with an established, leading local company more assured of being there for your energy future. With established business roots in Perth, we’re invested as much as you are.

Ahead of the Smart Energy Conference 2024 and before a decorated awards ceremony presented by John Grimes, Smart Energy Council, and Warrick Johnston, Sunwiz, Perth Solar Warehouse’s preliminary awards were confirmed.

23rd February 2024: Sunwiz – Advisor to Solar Businesses, announced on LinkedIn:

Sunwiz Awards 2024: Top 5 Installer Western Australia and Best Rated Installer Australia

Congratulations Perth Solar Warehouse [and PSW Energy] on winning two SunWiz Top Solar Company Awards. Your efforts propelled you into the Top 5 retailers for solar installations of all sizes in Western Australia.

It’s amazing to install that much solar in one year… it’s even more incredible when those customers leave such extraordinary reviews. Congratulations on also being in the Top 20 Most Popular Solar Companies in all Australia.

SunWiz is Australia’s pre-eminent market analyst, and has been awarding the leading solar companies since 2015. Our awards are open to everyone, are 100% objective & unbiased, and prestigious. As part of our Best Rated solar company award, SunWiz gathers every solar company’s customer reviews in 2023, from the five most-used review sites. It isn’t difficult to achieve a 5-star average from a handful of reviews; it is harder to maintain such high customer satisfaction in every review. Best Rated solar companies achieved a weighted-average rating above 4.8 stars from 50 reviews in 2023. Of these, Most Popular solar companies garnered more than 125 reviews.

Once again, well done on being both a Top Volume WA and Most Popular Best Rated Australia Retailer!

We look forward to congratulating you at the SunWiz Top Solar Company awards ceremony at the 2024 Smart Energy Conference.

Derek McKercher commented on Sunwiz’s Facebook, acknowledging the Sunwiz awards, “I’m a fan of any award structure that remains impartial and distinguishes accolades based on accumulated broad industry data. Outstanding work SunWiz and congratulations to all Awardee’s”.

In collaboration with Australia’s Smart Energy Council, the 2024 Sunwiz awards provide one of the most respected solar installer award structures for customers seeking to differentiate a solar company’s industry standing. When Australia’s number one solar company by volume (SPV data) occupies only 3% of the national market, many options exist. Therefore, customers need an impartial data-backed measuring stick. The Sunwiz Awards 2024 summarises data for investors seeking organisational past performance insight deserving acknowledgement.

Sunwiz Award 2024. Ensure a hassle-free quote by a Sunwiz awarded Top 5 Western Australian installer.

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The 2024 Sunwiz Awards is the second year Perth Solar Warehouse has partaken in the event. In 2023, Perth Solar Warehouse qualified as a Top 10 Best Rated Solar Company (Australia) when analysing customer review platforms. Achieving a Top 5 Western Australia combined volume ranking plus a 12th position in the Best Installer rankings is significant. But we’re not resting. There’s room for improved performance in 2024; we look forward to the 2025 results.

Extended references: McKercher Corporation, PSW Energy.

Best of Sunwiz

Contents

Key points

An aligned commitment to quality

What This Means for Our Customers

Leading Western Australia’s Solar Revolution

Ready to Power Your Home with Tesla?

Contents

A Milestone of Excellence in Solar

ISO 9001: Quality You Can Trust

ISO 45001: Prioritising Health and Safety

ISO 14001: Valuing the Planet We Power

It's a Win for Customers, Employees, and the Environment

References

Contents

What the WA scheme actually offers

1. A government rebate on the battery

2. A no-interest loan (optional, means-tested)

$2,001 to $10,000

3 to 10 years

0% Fixed

Plenti

Is the interest-free loan right for you?

Making the numbers work: consumption still matters

How to apply through Perth Solar Warehouse

Comparing your options

Ready to check eligibility?

Contents

Key points

Revolutionising the solar buying journey

Award winning digital buying experience

A woman led success story

Credit to the entire team

The future of solar in Australia

Key points

Stand-out features

Tesla Powerwall 3 specifications

References

Key points

Why are increased silicon wafer prices good?

What should purchasers consider?

Weight to the argument

References

Key points

Aiko Neostar 2P specifications

Contents

Size matters

Past installation standards

Warranty

Subsidy qualification

What does it cost to add more solar panels?

Alternative options

Quick insight

Contents

How solar inverters work

String inverters

When they make sense

Microinverters

When they make sense

Hybrid inverters

Perth's most popular option in 2026

Head-to-head

Perth’s conditions

Affect your inverter choice

What about Enphase?

Inverters PSW installs

Common questions

Final takeaway

Contents

Key statistics 2023

Sunwiz awards 2024

Top 5 solar installer report

Best rated solar installer report

Official announcement

What's your cost? It's free to ask

What's your cost? It's free to ask

What's your cost? It's free to ask

Your interest-free solar price in a few questions.