Hilbert residential solar, battery & EV project
Hilbert Solar Battery Installation with Whole-Home Backup & EV Charging
Australis Solar is a Perth-based, WA-owned solar company operating since 2008. At this Hilbert home, our team replaced an older 5.5 kW solar array and 5 kW inverter with an 18.48 kW AIKO solar array, a three-phase 20 kW Sigenergy SigenStor Energy Controller, 32 kWh of battery storage, Sigenergy Gateway whole-home backup and a 25 kW DC EV charger.
The system was designed for a household requiring greater solar generation, substantial energy storage, blackout support and integrated EV charging. Rather than adding new equipment around the limitations of the previous installation, Australis Solar redesigned the property as one coordinated solar, battery, backup and EV energy system.
- 18.48 kW AIKO solar array
- 32 kWh Sigenergy battery storage
- Sigenergy Gateway whole-home backup
- 25 kW Sigenergy DC EV charger
Confirmed project specifications
Hilbert Project Snapshot
A complete residential energy-system upgrade combining higher-capacity solar, modular battery storage, three-phase energy control, whole-home backup infrastructure and DC EV charging.
Hilbert, WA
Residential solar and battery upgrade.
2025
Confirmed project installation year.
18.48 kW
42 × AIKO Neostar 2S 440 W All Black panels.
20 kW
Sigenergy SigenStor EC 20.0TP three-phase controller.
32 kWh
Four 8 kWh SigenStor battery modules.
Whole-home
Sigenergy Gateway whole-home backup configuration.
25 kW DC
Sigenergy DC EV charger integrated with the wider SigenStor platform.
5.5 kW solar
Existing 5 kW inverter and previous solar system removed.
27,137 kWh/year
Published modelled annual estimate, not measured generation.
Production note: 27,137 kWh is a modelled annual production estimate. Actual generation varies with weather, shading, temperature, system availability and operating conditions.
Designed around an existing system
Customer Objective and Design Considerations
This was not a standard new solar installation. The property already had a 5.5 kW solar array connected to a 5 kW inverter, while the new brief required substantially more solar generation, meaningful battery capacity, whole-home backup and DC EV charging.
Increase solar generation
The previous system no longer provided the scale required for the property's changing electricity requirements. The replacement design needed to make better use of the available roof while supporting a larger three-phase energy platform.
Add substantial battery storage
Battery storage formed a major part of the brief. Solar generation, storage capacity and energy-controller architecture therefore needed to be designed together rather than adding a small standalone battery to the previous inverter.
Include whole-home blackout backup
Whole-home backup was incorporated using the Sigenergy Gateway. Backup requirements therefore influenced the controller, battery, electrical infrastructure and wider installation design.
Integrate high-power EV charging
EV charging formed part of the household's energy plan. The electrical system and Sigenergy architecture were designed so the 25 kW DC EV charger could operate as part of the coordinated energy platform.
System redesign
Replacing the previous system removed an unnecessary constraint
Australis Solar assessed whether retaining the existing 5.5 kW array and 5 kW inverter would restrict usable roof area, inverter architecture, battery integration or backup capability.
The previous equipment was removed so the property could instead be designed around the new solar, battery, backup and EV requirements as one complete system.
Explore solar upgrades in PerthRelevant design factors
- Existing 5.5 kW solar installation
- Available roof area and orientations
- Three-phase controller requirements
- 32 kWh battery installation
- Whole-home backup architecture
- Garage battery location
- Equipment impact protection
- DC EV charging
- Western Power connection requirements
One coordinated energy platform
System Design and Installed Components
Solar-panel capacity, battery energy capacity, inverter power, blackout capability and EV charging power describe different parts of the system. The Hilbert design brings them together through one coordinated electrical and energy-management architecture.
42 × AIKO Neostar 2S 440 W panels
The 42-panel array provides 18.48 kW of installed solar-panel capacity. The larger array increases daytime generation available for household loads, battery charging and EV charging when conditions allow.
Actual generation varies with roof orientation, shading, weather, temperature and operating conditions.
Compare solar panels for Perth homes20 kW three-phase Sigenergy SigenStor
The SigenStor EC 20.0TP manages the new solar generation and forms the central energy-control platform for the battery, monitoring, compatible backup hardware and EV charging architecture.
Its 20 kW rating describes power capability rather than battery energy capacity.
Explore Sigenergy systems in Perth32 kWh Sigenergy battery storage
Four 8 kWh SigenStor battery modules provide 32 kWh of installed storage capacity.
Storage allows suitable solar generation to be retained for later household use rather than relying entirely on instantaneous daytime consumption.
Compare solar battery optionsSigenergy Gateway whole-home backup
The Gateway provides the switching and system architecture required for this project's whole-home backup configuration.
Whole-home backup does not mean unlimited outage power. Available loads remain subject to inverter power, battery output, battery state of charge, available solar and simultaneous household demand.
Understand Sigenergy backup options25 kW Sigenergy DC EV charger
The DC charger forms part of the wider SigenStor platform, allowing vehicle charging to operate within the home's integrated solar and battery architecture.
Actual charging power depends on vehicle compatibility, vehicle charge limits, available energy, system settings and site conditions.
Compare EV charger optionsPrevious solar system removed
The previous 5.5 kW solar array and 5 kW inverter were removed instead of forcing the new battery, backup and EV architecture to work around older equipment.
This allowed the new array, three-phase controller, storage and supporting electrical infrastructure to be considered as one complete installation.
Learn about solar upgrades in PerthFrom constraint to solution
How Australis Solar Resolved the Hilbert Installation Requirements
Several parts of this project required more than simply mounting new equipment. The existing system, garage installation area, equipment protection, cable requirements, backup architecture, EV charging and network connection all influenced the completed design.
Existing solar constrained the new system architecture
Challenge
The home already had a 5.5 kW solar array and 5 kW inverter, while the new brief required substantially more generation, battery storage, whole-home backup and EV charging.
Australis Solar assessment
Australis Solar assessed whether retaining the previous installation would compromise usable roof area, inverter architecture or integration of the battery and backup equipment.
Australis Solar solution
The previous equipment was removed so the property could be redesigned around an 18.48 kW AIKO array and integrated three-phase Sigenergy platform.
Battery equipment installed within a vehicle-accessible garage
Challenge
The nominated battery position was within the garage, where equipment placement needed to account for its surroundings and potential vehicle interaction.
Australis Solar assessment
The installation team reviewed equipment positioning, physical protection and the building surfaces surrounding the battery installation area.
Australis Solar solution
Bollard protection was installed in front of the battery stack and fibre-cement sheeting was added to the garage ceiling around the equipment installation area.
Gateway installed in an exposed external position
Challenge
The selected Gateway position was on an external wall where additional protection from direct weather exposure was appropriate.
Australis Solar assessment
The final location was considered alongside cable routing, equipment access and environmental exposure.
Australis Solar solution
Australis Solar installed a dedicated rain cover above the Gateway while retaining practical access to the equipment.
Larger three-phase controller required suitable electrical infrastructure
Challenge
Moving from a 5 kW inverter to a 20 kW three-phase Energy Controller changed the electrical requirements between the new equipment and the property's connection infrastructure.
Australis Solar assessment
Cable capacity, routing, voltage rise, electrical protection and the approved network configuration needed to suit the upgraded equipment.
Australis Solar solution
A larger AC cable run was installed across the garage to the Gateway, with the completed system commissioned around the applicable approved connection requirements.
New or changed inverter and battery systems generally require an embedded-generation connection application. Read Western Power connection guidance .
EV charging needed to integrate with the wider energy system
Challenge
The household wanted higher-power EV charging to form part of the wider solar and battery installation.
Australis Solar assessment
Vehicle charging needed to be considered alongside the large solar array, battery storage and SigenStor energy-control architecture.
Australis Solar solution
A 25 kW Sigenergy DC EV charger was installed within the same energy ecosystem, bringing rooftop solar, stationary battery storage and vehicle charging into one coordinated platform.
Installed by Australis Solar
Hilbert Solar, Battery and Gateway Installation
Genuine Australis Solar project photographs showing the rooftop array, Gateway installation and protected SigenStor battery equipment installed at the Hilbert property.
Hilbert project questions
Solar, Battery, Backup and EV Charging FAQs
Practical answers based specifically on the confirmed Hilbert installation.
What solar and battery system was installed at this Hilbert home?
Australis Solar installed an 18.48 kW array using 42 × AIKO Neostar 2S 440 W panels, a 20 kW three-phase Sigenergy SigenStor Energy Controller, 32 kWh of SigenStor battery storage, a Sigenergy Gateway for whole-home backup and a 25 kW Sigenergy DC EV charger.
Why was the previous solar system replaced rather than simply expanded?
The home previously had 5.5 kW of solar with a 5 kW inverter, while the new brief required substantially more generation, battery storage, whole-home backup and EV charging. Removing the previous system allowed the roof, inverter architecture and electrical infrastructure to be redesigned around the new requirements.
Why does this Hilbert installation have 32 kWh of battery storage?
Substantial battery storage formed part of the homeowner's project brief, including increased use of stored solar and blackout backup. The completed system uses four 8 kWh SigenStor battery modules for 32 kWh of installed capacity. Battery size for another home should be assessed against its own usage, solar production, backup reserve and future electrical loads.
Does this Sigenergy installation provide whole-home blackout backup?
Yes. This project includes a Sigenergy Gateway configured for whole-home backup. Whole-home connection does not mean unlimited power during an outage. Available backup still depends on inverter output, battery state of charge and the household loads operating at the same time.
Why were a bollard and fibre-cement sheeting installed around the battery area?
The SigenStor equipment was installed in the garage. Australis Solar incorporated physical bollard protection for the battery position and added fibre-cement sheeting to the garage ceiling around the installation area as part of the completed battery installation scope.
How is the 25 kW DC EV charger integrated with the solar and battery system?
The Sigenergy DC EV charger forms part of the SigenStor energy ecosystem, allowing vehicle charging to be coordinated with the home's solar generation and stationary battery storage. Actual charging power depends on the vehicle, system conditions and available energy.
Can Australis Solar design a similar system for another Hilbert or Perth home?
Yes, but the system should be designed around the individual property rather than copying this installation. Australis Solar assesses the Synergy bill, electricity usage, roof, shading, existing solar, inverter, switchboard, battery location, backup requirements and future EV plans before recommending solar and storage capacity.
Request a property-specific design
Planning Solar, Battery, Backup or EV Charging in Perth?
Send Australis Solar your latest Synergy bill and details of your existing solar system. Our Perth team can assess your electricity usage, roof, shading, inverter, switchboard, battery location, backup requirements and future EV plans before recommending a suitable configuration.
Your proposal will identify the equipment, capacity, electrical work, backup scope and connection considerations for your property rather than relying on a generic package.
