Be completely disconnected from the Grid with Off Grid Solar Installation
Expert Off Grid Solar Installation in Perth
At Westsun Energy, our expert team provide premier off grid solar installation services that ensure your property has reliable power while completely disconnected from the grid. Specialising in bespoke off grid solar systems for Perth and wider WA, we tailor energy solutions to suit your individual needs. Trust us to deliver efficiency and independence with our high-quality off grid solar installation.
Frequently Asked Questions
What is an Off Grid Solar System?
An off grid solar system is a stand-alone system that is not connected to the electricity grid. Off grid solar systems in remote Perth locations ensure a reliable power supply for properties without viable access to the grid.
How Much Does An Off Grid Solar System Cost?
The price of off grid solar systems in Perth varies depending on how much power you use, your location and the amount of backup power you have.
Off grid solar systems are expensive and generally only a suitable option when the cost to connect a property to the electricity network is inordinate.
What Off Grid Solar System Size Should I Get?
The key to a successful off grid solar installation is ensuring you have enough panels and batteries to power your daily electricity consumption and not leave you in the dark.
Consider Days of Autonomy
If you do not have any back-up power in the form of a generator, you will want to ensure you have enough solar storage to get you through a few days. If your solar panels do not generate any solar energy over those days, you will still have power. The amount of storage and days of autonomy depend entirely on your location.
Consider Back-Up Power
It is common for off grid solar systems to have back-up power in the form of a diesel generator or wind turbine. Back-up power is beneficial and can mitigate the 100% reliance on battery storage.
How Does An Off Grid Solar System Work?
Off grid solar systems work by generating electricity from solar panels and using that energy to charge a solar battery with a charge controller. Inverters convert the DC (direct current) to AC (alternating current) so that the system can power your home or business appliances. The excess solar power charged through your solar battery allows you to use electricity at night or during times your system is not generating power.
What Components Are Involved In an Off Grid Solar System?
For off-grid solar systems to work effectively, the average home or business will require the following components:
- Solar panels
- Solar battery
- Solar inverter
- Solar charge controller
- Alternative energy resource (optional)
Solar Panels
Solar panels are a necessity for stand-alone solar systems. The number of panels you will need depends on your daily electricity usage.
Solar Battery
Solar batteries are also necessary as they allow your home to continue to run after the sun goes down. During the day, your solar battery will charge as your solar panels generate excess electricity.
Solar Inverter
Solar inverters convert the direct current collected by your solar panels into alternating current, which is required to run your household appliances and electronics.
Solar Charge Controller
Solar charge controllers are vital to your battery’s health. Your controller regulates the voltage and current that your solar battery receives.
Standout Off Grid Solar System Brands
We work with leading brands to deliver optimal off grid solar systems in Perth. Choose from innovative, high-performance solutions that will meet your energy demands.

Selectronic
Selectronic is an Australian owned company who have been delivering energy solutions to Australia and the world for more than fifty years. Their SP PRO is the only bi-directional, multi-mode inverter charger made in Australia and forms the heart of every battery-based energy system. The Selectronic approach allows complete flexibility with system design, ensuring a tailored solution perfect for buyers.

PowerPlus Energy Life Premium Series
The beauty of the Life Premium batteries is they are suitable for numerous applications, ranging from residential to industrial, commercial and telecommunication. They are Australian made and designed to be robust, reliable and well suited to the harsh Australian climate all year round.
Off Grid Solar Installation with The Life Premium Series
Out with the old (lead); in with the new (lithium)!
Due to niggling issues and increased energy demand, here we installed a new off grid solar system and upgraded the size of the ground-mount array.
The system installed in Muchea included:
- 9kW solar system
- 18 x 500w Trina solar panels
- 1 x Fronius 8.2kW Primo Single Phase Inverter
- 5 x Life Premium Series 3.3kWh with Battery Storage Cabinet
- Design, install and commission from our CEC Accredited installers

SMA
This company has achieved a leading technology position in the market thanks to its development and production of cutting-edge off grid solar inverters and monitoring devices for PV systems. SMA can provide the right inverter for any application, whether for an on grid system, self-sufficient power supply or back-up operations.
SMA Sunny Island Inverter Off-Grid / Stand Alone Power Systems Video
Benefits of Stand Alone Power Systems
SMA Sunny Boy Off Grid Solar System
SMA Sunny Boy Storage 2.5 (Battery Inverter)
- Charge and discharge power of 2.5kW
- Ideal for residential applications
- For new and existing installations; it is compatible with all lithium-ion batteries
- AC-connected system
- Efficiency up to 97%
SMA Sunny Island Off Grid Solar System
SUNNY ISLAND 3.0M/4.4M (For Single and Three-Phase Systems)
- For self-consumption systems, battery back-up systems and off-grid power systems
- All lead-acid batteries and lithium-ion batteries can be used
- Maximum efficiency greater than 95%
SMA Sunny Island Off Grid Solar System
SMA Sunny Island 6.0H/8.0H (Off Grid Inverter)
- OptiUse: Fast installation and commissioning, plus simplified operation
- OptiBat: State of charge calculations, keeping you informed at all times
- For systems from 3 to 300kW
Off Grid Solar Installation with SMA
Due to niggling issues and increased energy demand, we installed a new system and upgraded the size of the ground-mount array here.
The system installed in Brunswick included:
- 02kW solar system
- 18 x 390w Q.MAXX ALL BLK G4+ solar panels
- 1 x SMA Sunny Boy 5kW single phase inverter
- 1 x SMA Sunny Island 8kW single phase battery management
- 4 x 120VDC 3.3kWh LFP Chemistry Self-Managed
- Design, install and commission from our CEC Accredited installers
Take Control With Our Off Grid Solar Systems in Perth
Gain energy independence and contact Westsun Energy for off grid solar installation in Perth or wider WA. Our expert team are dedicated to delivering reliable, high-quality solar solutions tailored to your unique needs. Contact us today for more information or request a free quote.