Unlock More Solar Power Without Paying for a Bigger Inverter
Purchase an eligible Sigenergy integrated solar battery system before 30 June and receive a FREE inverter upgrade worth up to $1,166 — automatically included at installation.
Instant Value — From Day One
Your free inverter upgrade isn't a future promise. It starts working the moment your system switches on.
Your inverter upgrade is included free of charge. Up to $1,166 of value added to your system at no extra cost — applied automatically on eligible Sigenergy systems.
A larger inverter increases power throughput, charging your battery more quickly during peak solar hours so you have full storage before the sun goes down.
Remove the bottleneck that wastes the solar energy you're already generating. A correctly sized inverter means your home and battery can absorb more of your panels' output.
When your system captures more of the solar it generates, you draw less from the grid at peak rates — reducing your electricity bill from day one and across the life of your system.
Why Does Inverter Size Matter?
Your inverter is the heart of your solar and battery system. It controls how much solar energy can flow from your panels to your home and battery. An undersized inverter creates a bottleneck — limiting how much solar power your home can actually use and how quickly your battery can charge.
- More solar energy being curtailed or wasted
- Increased reliance on electricity from the grid
- Slower battery charging during peak solar production
- Higher ongoing power bills as a result
Gold Coast solar irradiation
The Benefits of a Larger Inverter
Use more of the solar energy you generate instead of exporting it to the grid at a lower feed-in rate.
A larger inverter means more power throughput — your battery charges quicker during peak solar hours so you have full storage before the sun goes down.
Stop paying peak electricity rates unnecessarily. Let your solar and battery system cover more of your household demand throughout the day.
A correctly sized inverter today gives you the headroom to add more panels, batteries, or an EV charger down the track without needing to replace it.
Over the life of your system, a correctly sized inverter can potentially save you thousands in electricity costs that would otherwise go to the grid or retailer.
Right-sizing at installation is always better than retrofitting. Get the full benefit of your system from the moment it's switched on — no compromises, no bottlenecks.
By upgrading your inverter, you increase the system's throughput capacity
This allows your home and battery to access more of the solar energy you're already generating — energy that was previously being curtailed or wasted due to an undersized inverter.
EOFY FREE Inverter Upgrade Offer
Get a FREE Inverter Upgrade
Purchase an eligible integrated solar battery system before 30 June 2026 and we'll upgrade your inverter size FREE as part of our End of Financial Year Sale.
Inverter Upgrade Value — What You Save
| Inverter Size | Phase | Your Saving |
|---|---|---|
8kW Single Phase | SP | |
10kW Single Phase | SP | $266 saved |
10kW Three Phase | TP | |
15kW Three Phase | TP | $1,166 saved |
20kW Three Phase | TP | $682 saved |
25kW Three Phase | TP | $816 saved |
30kW Three Phase | TP | $632 saved |
Upgrade value applied as a free-of-charge inclusion at point of installation. Available on eligible Sigenergy integrated solar battery systems only. Offer ends 30 June 2026.
Don't Miss Out — Speak With a Solar & Battery Specialist Today
Purchase an eligible Sigenergy integrated solar battery system before 30 June and get a free inverter upgrade as part of our End of Financial Year Sale. Visit one of our showrooms or book a free consultation to find out how a properly sized system can maximise your savings.