Keep what still works
Retain suitable equipment where condition, compliance, compatibility and warranties support it.
EXISTING SOLAR / BATTERY RETROFIT
Add storage without
guessing compatibility.
A retrofit begins with what is already installed: inverter type, array capacity, age, monitoring, supply phase, switchboard and network approval. That evidence determines whether the best path is AC-coupled, platform replacement or a broader upgrade.
Check my retrofit path
WHAT CHANGES FOR YOU
The practical value.
Select a viable coupling path
Compare AC-coupled, hybrid or replacement pathways around the actual site.
Add backup deliberately
Treat backup, metering and gateway hardware as part of the electrical design.
YOUR OPTIONS
Work with what is installed.
Retain + AC couple
Existing solar performs well and a supported battery pathway is available.
CHECK BEFORE COMMITTINGMetering, backup interaction and multiple-app experience.
Hybrid conversion
A compatible upgrade creates a cleaner solar, battery and backup architecture.
CHECK BEFORE COMMITTINGArray compatibility, rework scope and warranty boundaries.
Broader refresh
The existing system is old, underperforming or poorly aligned with future loads.
CHECK BEFORE COMMITTINGWhether the extra capital produces a meaningful long-term benefit.
BEFORE YOU DECIDE
Get the variables clear.
Will my current inverter work?
Some systems support straightforward addition; others need AC coupling, a controller change or more investigation. Model number and installation details matter.
Does an old system affect eligibility?
Existing solar, approved products, battery capacity and installation timing all require verification before a certificate estimate can be relied on.
Is replacement wasteful?
Sometimes retention is best. Sometimes an ageing or incompatible inverter limits monitoring, storage or warranty outcomes. Nexen should show both cases where viable.
What the proposal
needs to establish.
- Existing solar stays in the brief
- Compatibility checked before rebate assumptions
- Photos, bills and monitoring screenshots accepted securely
- Upgrade and retain options compared
QUESTIONS & ANSWERS
The details that matter.
What should I upload?
A recent bill, inverter model/serial photo, switchboard photo, monitoring screenshot and any original system paperwork are the most useful starting set.
Can I add a different battery brand?
It depends on the coupling architecture. Battery modules generally need to remain within their supported controller platform, while AC-coupled options may coexist with a separate solar inverter.
Will Nexen service the old solar too?
The enquiry will identify the existing-system boundary. Any inspection, rectification or adopted warranty responsibility is confirmed in writing rather than assumed.