In a major boost for homeowners with ageing, faulty or outdated solar inverters, SolarEdge and Sungrow have jointly launched a new Inverter Trade-In Offer-a limited-time program designed to help Australians upgrade to safer, more efficient, and battery-ready inverter technology.
If your system is more than 5–10 years old, struggling with performance, showing error codes, or no longer compatible with modern standards, this trade-in program could significantly reduce your upgrade cost.
This guide breaks down everything you need to know-eligibility, savings, inverter options, how the offer works, and why now is the best time to upgrade.
Why Are SolarEdge and Sungrow Offering a Trade-In Program?
The Australian solar market is maturing rapidly. Millions of homes installed solar between 2010 and 2017, meaning a large proportion of inverters are now beyond their optimal operational life. These older devices struggle with efficiency losses, heat stress, warranty expiry, and—in many cases—complete failure. Modern standards are also more stringent, requiring enhanced safety features and better monitoring capabilities.
Both SolarEdge and Sungrow recognised the rising demand for reliable replacements and future-proof hybrid technology. At the same time, more households are exploring battery storage due to falling feed-in tariffs and rising electricity prices. The trade-in program directly supports this shift by making upgrades more affordable, especially for homeowners preparing for batteries or wanting to ensure long-term performance from their solar systems.
How the Solar Inverter Trade-In Offer Works
The process is simple and transparent:
Step 1 — Check Your Eligibility
Your old inverter likely qualifies if it is:
- Out of warranty
- Faulty or showing error codes
- Underperforming / unstable
- Older than 7–10 years
- A discontinued model
Step 2 — Choose Your Upgrade (SolarEdge or Sungrow)
Both brands offer hybrid and high-efficiency inverters.
- Home size
- Solar array capacity
- Battery plans
- Budget
- Energy consumption pattern
Step 3 — Installer Completes the Replacement
Your old inverter is safely removed and replaced with a new, high-performance unit.
Step 4 — Claim Your Trade-In Rebate
Once submitted, you receive:
- Cashback, or
- Discount applied at installation, depending on the model
Isolux Solar handles the submission to ensure you get the maximum eligible rebate.
Eligible Inverters for Trade-In
Many models qualify under this initiative, including older SolarEdge and Sungrow units that are no longer supported or have reached the end of their expected lifespan.
Older SolarEdge Models
- SolarEdge HD-Wave (early series)
- SE1000–SE5000 older generations
- Discontinued SolarEdge models
Older Sungrow Models
- SG series prior to 2020
- Early generation string inverters
- Units failing due to heat stress
Other Brands Often Eligible
(As long as they are being replaced with Sungrow or SolarEdge)
- Growatt older models
- Delta discontinued units
- ABB / Power-One
- SMA older TL series
- Solis early generations
Even if your brand isn’t listed, you may still be eligible.
What You Get With the Trade-In: Rebates, Discounts & Bonus Features
The primary benefit is financial relief. Instead of paying full price for a replacement inverter, the trade-in rebate reduces the overall upgrade cost. Homeowners also receive a brand-new warranty, typically lasting ten to twelve years depending on the model.
Beyond savings, the performance benefits are substantial. A modern inverter can improve solar energy harvest by up to 20–30% compared to units installed a decade ago. Newer models offer superior monitoring, improved thermal management, safer operation, and better protection against voltage surges. Perhaps the biggest advantage is battery readiness; both SolarEdge and Sungrow now design their systems with seamless integration for future home batteries, giving homeowners a clear upgrade path as energy independence becomes more attractive.
Why This Is the Right Time to Upgrade Your Inverter
Australian households continue to face increasing electricity prices, making efficient solar production more important than ever. Meanwhile, feed-in tariffs have been consistently declining, pushing homeowners to self-consume more of their solar energy rather than export it. An outdated inverter can significantly limit your system’s production, reducing the value of your investment at a time when every kilowatt matters.
Ageing inverters are also more likely to fail unexpectedly, creating potential downtime and costly emergency replacements. With the trade-in offer currently active, upgrading now ensures your system remains safe, reliable, and compatible with emerging technologies such as home batteries, EV charging, and advanced monitoring platforms.
SolarEdge vs Sungrow: Choosing the Right Replacement Inverter
Choosing between SolarEdge and Sungrow largely depends on your needs and roof conditions. SolarEdge is popular for homeowners who want the highest level of efficiency through panel-level optimisation. These systems are ideal for roofs with multiple orientations, shading issues, or complex layouts. SolarEdge also offers industry-leading monitoring and safety features, making it a strong choice for households that want premium performance and smart energy management.
Sungrow, on the other hand, is widely regarded as the best value hybrid option on the Australian market. Known for durability and high performance in hot climates, Sungrow hybrid inverters integrate seamlessly with the brand’s SBR battery, offering exceptional storage efficiency and reliability. For homeowners seeking battery-ready technology at an affordable price, Sungrow is often the preferred option.
How Much Can You Save Through the Trade-In Program?
Savings vary based on the model being replaced and the inverter chosen as the upgrade. Most homeowners benefit from rebates ranging between $250 and $600 for standard standalone inverter upgrades. Those upgrading to a hybrid inverter—especially if a battery is included—can save anywhere from $500 to $1,200.
Isolux Solar provides a personalised quote that includes your estimated trade-in rebate, replacement options, and total installation cost. This ensures full transparency and helps you make an informed decision.
Who Should Consider Taking This Offer?
The trade-in program is ideal for homeowners with systems more than five years old, as well as those experiencing performance issues, frequent shutdowns, or visible signs of component wear. It’s also an excellent opportunity for anyone looking to prepare their home for battery storage or upgrade monitoring capabilities.
If you’ve recently noticed lower solar output, unusual energy bills, or inverter error messages, this offer provides a timely and cost-effective solution. Instead of waiting for a complete inverter failure—often during peak summer—you can upgrade proactively while taking advantage of financial incentives.
How Isolux Solar Supports Your Inverter Upgrade
Isolux Solar specialises in inverter upgrades and system modernisation for Australian homes. Our team conducts a detailed assessment of your existing solar system to determine eligibility for the trade-in program and recommend the best replacement technology. We manage the full installation process, submit the rebate claim on your behalf, and ensure your system operates at its maximum possible performance after commissioning.
Our goal is to deliver a smooth, stress-free upgrade with long-term reliability and maximum energy savings.
Conclusion
For most Australian homeowners with ageing or inefficient inverters, the trade-in offer from SolarEdge and Sungrow is a valuable opportunity. The combination of reduced upgrade costs, improved solar performance, longer warranties, and full battery compatibility makes this one of the most attractive inverter replacement programs currently available.
Upgrading now ensures your system remains safe, modern, and ready for the future of home energy—especially as Australia moves toward greater electrification and energy independence.
Ready to Upgrade Your Old Inverter?
Contact Isolux Solar today to check your eligibility for the SolarEdge and Sungrow Trade-In Offer. Our team will provide expert advice, transparent pricing, and a complete upgrade solution tailored to your home.
