Solar & Battery System Upgrades

Integrated Electrical & Solar provides solar & battery system upgrades across Busselton, Dunsborough, and the South West.

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Solar System & Battery Upgrades Busselton

Is your older solar system struggling to keep up with your changing lifestyle? Many households in Busselton and the South West originally installed systems designed for lower electricity consumption. With the addition of modern luxuries like ducted air conditioning, electric vehicle (EV) chargers, and induction cooktops, those older, smaller solar arrays often leave homeowners facing high power bills once again.

At Integrated Electrical and Solar, we specialise in future-proofing your home. A professional solar system and battery upgrade in Busselton allows you to transform your legacy setup into a high-performance energy hub, increasing your self-sufficiency and breaking free from rising grid electricity prices.

Expanding Your Solar Panel System for Maximum Yield

If your current rooftop solar system isn’t generating enough power to cover your daytime energy usage, expanding your capacity is the most cost-effective solution. You don’t necessarily need a complete, expensive system tear-down to see a massive boost in performance.

Our clean energy specialists assess your existing roof space, orientation, and electrical infrastructure to determine the best path forward:

  • Upgrading to High-Wattage Panels: Older systems often feature 250W or 300W panels. By replacing or expanding your array with modern, high-efficiency panels (often 440W+), you can generate significantly more electricity using the exact same amount of roof space.
  • Adding a Secondary System: If your original inverter is maxed out but you have remaining unshaded roof space, we can design and install an additional independent solar array that works seamlessly alongside your current setup.
  • Optimising for EV Charging: We can size your expansion specifically to match the high-draw demands of a home electric vehicle charger, allowing you to drive on pure, free sunshine.
Drone footage solar panels
sungrow solar battery stack

Retrofitting Batteries to Existing Solar Systems

One of the most frequent requests we handle is adding energy storage to existing “solar-only” systems. Because feed-in tariffs continue to drop, sending your excess solar power back to the grid offers very little financial return. It makes far more sense to store that energy for your own evening use.

We provide advanced solar battery retrofitting in Busselton utilising two main methods:

1. AC Coupling Technology

This allows us to add a cutting-edge battery storage system (such as a Tesla Powerwall) directly to your home’s electrical switchboard without touching your existing solar inverter. Your current solar panels keep working exactly as they are, but the excess power they generate is routed into the battery instead of the grid.

2. Hybrid Inverter Upgrades

If your older solar inverter is approaching the end of its lifespan, we can replace it with a modern, intelligent hybrid inverter. This dual-purpose unit manages both your solar panels and your new battery storage system from a single, high-efficiency device.

Upgrade Readiness Checklist

Not sure if your system is a candidate for an expansion or battery addition? Review our quick assessment guide:

Current System AgeTypical SetupBest Upgrade Pathway
1 to 5 Years OldHigh-efficiency panels, modern standard string inverter.AC-Coupled Battery Retrofit: Keep your excellent existing solar setup and simply add independent battery storage.
5 to 10 Years OldSub-300W panels, older inverter approaching end-of-warranty.Hybrid Inverter & Battery Upgrade: Replace the aging brain of the system with a hybrid unit and add storage.
10+ Years OldSmall 1.5kW to 3kW system, obsolete components.Full System Modernisation: Replace the entire array to benefit from massive leaps in safety, efficiency, and modern solar technology.

Modernising Inverters & Advanced Smart Monitoring

An upgrade isn’t just about adding more raw power; it’s about gaining total control over how that power is used. A major component of our solar upgrade services in Busselton involves installing modern, smart-connected hardware.

Unlike older systems where you only know something is wrong when a massive electricity bill arrives, modern smart inverters feature comprehensive app-based monitoring.

Through your smartphone or tablet, you gain access to real-time data:

  • Live Consumption Tracking: See exactly how much power your appliances are drawing at any given second.
  • Production Analytics: Monitor daily, weekly, and seasonal solar generation trends.
  • Virtual Power Plant (VPP) Readiness: Modern hybrid systems ensure your home is fully equipped to participate in future smart-grid incentives and energy-sharing programs.

Our customers say it best

EXCELLENT
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Based on 19 reviews
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Genna Haines profile picture
Genna Haines
4 April 2026
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We recently had cam fit out a new solar system at our house. The process was made easy from start to finish. There’s so much information out there and I was feeling very overwhelmed but cam explained it all to me. Karen was great helping us apply for all the paperwork and the guys that turned up to fit the system were very professional.
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Grit2Glow
17 February 2026
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Awesome work, efficient, professional and helpful. Thank you Cam, Michael and team. We are future proofed! 🙌⚡️🚙🏡
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Dan Bawden
6 February 2026
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Liam and Ben were great to deal with during the Battery Install. Excellent and efficient work. Very polite too. Cam and Liam were great in the lead up to the Battery Install to keep its in the loop. Great work Integrated Electrical and Solar. I would definitely use them again.
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Antonia C
28 November 2025
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An amazing job putting in an EV charger done by Liam & Cam the younger. Very efficient. And respectful of garden plants. Highly recommend. 11/10.
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Ben Freer profile picture
Ben Freer
8 October 2025
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Cam and the Team were great and fitted a 30Kw Deye sola and battery system at our house. They were quick eficient and neat and super easy to deal with. They sorted all the rebates - Very highly reccomended.
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Joshua McArtney profile picture
Joshua McArtney
4 July 2025
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Liam and Cam did a great job for us in Cowaramup!
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M M
1 May 2025
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Cam was excellent to deal with and the quality of the product and installation was above and beyond. Cam and his team were very transparent for not over or under selling a solar solution to fit my requirements highly recommend Cam and his team 5 star business who’s customer focused.
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John Sherry profile picture
John Sherry
27 March 2025
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Cam is the best guy to deal with, very proactive and nothing is too hard. In fact the whole experience with Integrated Electrical and Solar was great, and now I have my 10KW Fronius & REC solar installed and working with the least amount of fuss, and the price was great too! 😀 They even did some electrical work for me at the same time, all very reasonable priced and excellent quality. Would definitely recommend them.
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Martina Hopkins profile picture
Martina Hopkins
27 March 2025
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I am very happy with the professional and friendly, service. Highly recommended to anyone wanting a solar system and/or battery