Address: 3/90 Discovery Drive, Bibra Lake, Western Australia, 6163.
3 kW Solar is the new 4 kW solar system. Why? 3.9 kW is the largest system configuration available on a 3 kW inverter while generating a very similar output (kWh) to a 4 kW solar system at a lesser price!
GENERATE
Power
Choose a 3 kW solar energy system that suits you. All Perth Solar Warehouse 3 kW solar energy systems generate an average of 15 units(4) per day, which is your energy-saving potential. Packages start from $2590.
Get the best 3 kW solar deals. Here’s quick access to our latest catalogue ›
Factors influencing your ideal solar panel selection are (1) Budget, (2) Warranty, (3) Technology and (4) Available roof area. When you’re ready, we’re here to help with a 3 kW solar package comprised of leading brand technology that suits you.
Assisted pairing: 
Popular by demand, 
Most popular all-time
We hate spam as much as you do. Understandably, customers prefer to supply different levels of information when seeking deeper product and pricing insight. Express quotes (more information) automatically receive a copy of the latest catalogue (less information) with our most up-to-date promotional pricing: Perth and Bunbury region, Western Australia.
Your solar inverter is the heart of your new sustainable energy ecosystem. Limited by 3 kW output power, select your solar inverter with future brand-aligned system expansion capabilities for a more seamless, sustainable energy experience.
Assisted pairing: 🔥 Popular by demand, ⚡️ Most popular all-time.
Need assistance? Contact sales support
Your
NEXT
STEP
Make sure the above 3 kW solar package prices are our best and customise your selection:
- Receive a copy of the latest 3 kW solar catalogue when you submit an express quote.
- Choose your ideal 3 kW solar package.
- Reconnect for a hassle-free property compatibility check.
There’s a reason we are one of Perth’s most trusted solar installers. Perth Solar Warehouse makes buying 3 kW solar energy systems transparent and user-satisfying, revolutionising sustainable energy supply chain and delivery. We simplify buying solar through an enhanced, locally proven buying and support experience.
Combine your 3 kW solar system with a battery for the ultimate bill reduction success. You’re buying a 3 kW solar energy system to do a job, make sure it does the whole job with a battery. Compare batteries ›
Experience 3 kW
SOLAR
BLISS
We've committed to providing Perth's most valuable 3 kW solar system guarantee
We’re delivering more than the best 3 kW solar deals Perth customers seek. Locals like you, we’re invested in your electrification shift as you need. Every 3 kW solar energy system by Perth Solar Warehouse is a commitment to energy savings and our community. Our system and workmanship guarantees are defined from over twenty years of local business history towards a proven operational guarantee you can trust.
Perth’s best value 3 kW solar energy system retailer/installer guarantee [complemented] x time in business.
Very professional. I chose this company as it was WA based and had competitive prices with very good customer service. From start to finish the process was easy very minimal hassle all questions were answered in a timely manner. Installation went without a hitch and the guys did a good job tidying up after themselves. I would highly recommend this company.
Amanda Veitch
Very professional. I chose this company as it was WA based and had competitive prices with very good customer service. From start to finish the process was easy very minimal hassle all questions were answered in a timely manner. Installation went without a hitch and the guys did a good job tidying up after themselves. I would highly recommend this company.
Amanda Veitch
We are very pleased with our decision to get our solar system from PSW.
The whole installation process was quick and painless and has been working perfectly all year. We run ducted reverse cycle air con and I used to have a standing order with Synergy for $150 a month, this has been reduced to $20 a month and covers our bills. So approx savings are $1560 per year which means the payback period for the system is less than 3 years for us. I would love to get a battery for the system when the prices come down in the future.
Trevor Smith
A very easy and stress-free experience. Once I contacted PSW the whole process ran smoothly. There was no pressure to sign-up, all relevant information was sent to me and I was left to make my decision. The date was booked in and the system was installed without any issues. My roof faces East-West but PSW were able to install the system to still make full use of the conditions. Started producing power immediately. Have already recommended PSW to friends and will continue to do so.
Craig Van Der Laan
Google and SolarQuotes 4.9/5. PSW ranking ›
Western Power may restrict inverter capacity in certain network locations to no more than 3 kW inverter output capacity.
Most leading inverter brands state that their inverters can endure solar array oversizing by up to 50%. The Clean Energy Regulator has had its say on this topic and capped the oversizing of solar inverters to 33% without a battery.
Therefore, 3 kW Inverter capacity (3) ÷ 0.75 = 3.99 kW of solar panels.
Increase savings potential and improve system efficiency by overdriving your inverter ›
This depends on you. A 3.9 kW solar energy system with a 3 kW inverter will generate an annual average of 15 units⁴ (kWh) per day, but we can estimate maximum saving potential through historical irradiance data and Synergy tariff prices.
Consider a maximum energy saving potential: The ability to consume the maximum annual estimated yield on a Northern roof aspect (0°) with a 25° roof pitch, located in Perth (6000) and environmentally derated to 70% generation potential, your energy savings substituting the Synergy Home Plan A1 tariff in 2024/25 of 30c per kWh would be similar to:
3.9 kW = $1640
The above is a maximum saving potential using a general (central) installation profile to assist in determining a best-case return on investment in annual energy savings.
Suppose you choose to opt out of a battery. In that case, these savings reflect unobstructed daylight hours within a variable solar bell curve period, 8 am to 5 pm, and are presented as unit-for-unit savings, which may not directly reflect bill savings.
It’s important to note that every installation is unique and requires a location-specific energy yield report for more solid investment decision-making. We’ve made getting your free yield report easy. Request a noninvasive express quote, and we’ll send your complimentary energy yield report.
Yes. As with all 3 kW solar systems, battery choices are limited. For example, if the only battery you want to install in the future is a Tesla Powerwall (AC coupled), then selecting any standard (solar only) inverter will work.
Although, should your preference be a Goodwe Lynx Home F (DC coupled), a compatible hybrid solar and battery inverter such as the Goodwe EH+ inverter is required.
Using a $38 STC (Small Technology Certificate) valuation and 440W solar panel size for multiplication, the solar rebate you can access in the Perth and Bunbury region of Western Australia for common solar energy system sizes is as follows:
- 3.9 kW = $1,248 – 2025 installation
- 3.9 kW = $1,040 – 2026 installation
For your convenience, advertised Perth Solar Warehouse 3.9 kW solar package prices include the subsidy already deducted as a ‘point of sale discount’ (redeemable by Perth Solar Warehouse after installation to recover the total system cost).
If you would like to take advantage of the current year 2025 solar rebates, Perth Solar Warehouse provides a hassle-free express quote for your convenience.
Learn more: Your solar rebate amount ›
Most residential 3.9 kW solar arrays installed on a 3 kW inverter will qualify for the Synergy solar feed-in tariff named; DEBS (Distributed Energy Buyback Scheme). This means you can receive:
2c ex GST: off-peak
10c ex GST: peak (3 pm to 9 pm)
2024/25 Synergy solar feed-in tariff update ›
As wholesale energy values vary at different times of the day, the Distributed Energy Buyback Scheme values your excess solar energy with the energy available in the grid at a nominated time. A two-cent valuation during higher ambient light periods reflects a surge of wasted solar power to the grid by a high-volume accumulated number of dwellings exporting simultaneously.
Solar energy is most valuable when used directly or stored in a battery for later use. If eligible, the Synergy Distributed Energy Buyback Scheme will only favour your energy bill in a reduced capacity.
Explore: Proven battery technologies by Perth Solar Warehouse ›
Based in Bibra Lake, Perth Solar Warehouse installs home/business solar and battery systems from Yanchep (North) to Bunbury (South), Fremantle (West) to Northam (East), and most regions in between.
View the Perth Solar Warehouse 3.9 kW solar installation zone, including customer map; Installation Zone ›
*Conditions:
1. Structure: The listed prices refer to single-level, single-phase, and single-roof-face dwellings with adequate switchboard accessibility/provisions available to accommodate the additional circuitry or associated components. Additional installation costs may apply; inquire or learn more via PSW Energy (affiliate business).
2. Product/ package: The base package must have an accompanied inverter (³) or integrated storage system such as Tesla Powerwall 3, Alpha ESS G2/G3 or Sigenergy SigenStor for eligible prices within the PSW Installation Area after the STC Zone 3 subsidy has been deducted as a point-of-sale discount. Additional installation costs may apply to ensure this package is compatible with your property. Inquire or learn more via PSW Energy (affiliate business).
3. Advertised inverter prices are to be used as package price break itemisation guidance and are not a substitute for individual sale use outside of the solar package.
4. Generation figures are general only, based on historical Zone 3 annual average irradiance data. Figures may not represent precise daily generation data. Customers should obtain site-specific average generation data for their particular system size and solar orientation. To obtain this information, contact sales support.
5. Perth Solar Warehouse reserves the right to decline to commit to tender for selected projects without reason.
