Solar System Replacement for Moreton Bay & Sunshine Coast
An ageing or failing solar system does not just underperform — it can leave you generating far less than you should be, or nothing at all. If your original installer has since closed down, or your system is showing its age, SEBSS is based right here in the Moreton Bay region and provides direct, local replacement and upgrade services across Moreton Bay and the Sunshine Coast, both served by the Energex network.
Signs your solar system needs replacing
- Frequent inverter error codes, especially ones referencing internal temperature, insulation resistance, or DC bus voltage
- Unusual buzzing, clicking or grinding noises from the inverter
- Overheating or repeated shutdowns on hot days
- Unexplained generation drops that do not match weather or shading in your monitoring data
- Total system failure — no output and it will not restart
- Your original installer has gone out of business, leaving the system "orphaned" with no warranty support
What a replacement typically costs
Costs depend on how much of the system needs replacing. A straightforward string inverter replacement for a typical 5–6.6kW system runs roughly $1,500–$3,000 installed. Upgrading to a hybrid inverter — which also unlocks battery compatibility down the track — runs $2,500–$4,500 for an equivalent system size. Where individual microinverters have failed, replacement runs $150–$250 per unit plus labour. If your system is “orphaned” because the original installer no longer trades, the full cost typically falls to you since there is no warranty path back to a business that no longer exists — which is exactly why choosing an established, locally based installer matters this time around.
Full replacement or just the inverter?
Not every ageing system needs to be torn off the roof. In many cases the panels are still structurally sound and producing close to their rated output, and only the inverter has failed or aged out — a straightforward, lower-cost fix. In other cases, particularly with systems approaching 15–20 years old, panel degradation and outdated technology mean a full system replacement delivers meaningfully more generation for a similar spend to a partial fix. We assess your actual system before recommending either path, rather than defaulting to the more expensive option.
The smart time to add a battery
If you are already replacing your inverter, it is worth deciding upfront whether to install a hybrid unit rather than a like-for-like string inverter. A hybrid inverter is what enables a DC-coupled battery later without a second inverter swap, and if you are considering adding a battery to your system at all, doing it at the same time as a replacement avoids paying for inverter work twice.
What's included in a system replacement
- On-site assessment and diagnosis of your existing system
- Safe removal and compliant disposal of old equipment
- New inverter and\/or panel installation to current standards
- Updated network connection paperwork with Energex
- Reconfigured monitoring so you can see performance from day one
- Manufacturer and workmanship warranty documentation
Locally based in Moreton Bay, servicing the Sunshine Coast
SEBSS is based in the Moreton Bay region, giving us direct, local reach across both Moreton Bay and the Sunshine Coast without a metro installer’s travel surcharge. All replacement work is carried out under CEC accreditation and Electrical Licence 73850, with full compliance documentation and network re-notification handled on your behalf.
Frequently asked questions
How do I know if I need a new inverter or a whole new system?
It depends on what is actually failing. Persistent error codes or unusual noises usually point to the inverter alone, while unexplained generation loss across the whole array, or panels approaching 15–20 years old, often justifies a full system replacement. A site assessment settles it before you spend anything.
What if my original installer has gone out of business?
This is common with older systems and is called an “orphaned” system. There is no warranty path back to a business that no longer trades, so the replacement cost typically falls to you. SEBSS assesses the existing installation, handles compliant removal, and installs and certifies the replacement with our own local warranty backing it.
How much does it cost to replace an old solar system?
A straightforward inverter replacement runs roughly $1,500–$3,000 for a typical home system, or $2,500–$4,500 for a hybrid inverter that also supports a future battery. A full panel-and-inverter replacement costs more and depends on system size — a site assessment gives you an exact figure.
Can I add a battery when I replace my system?
Yes, and it is usually the ideal time to do it. Installing a hybrid inverter as part of the replacement avoids a second inverter swap later if you decide to add a battery down the track.