Robbie McDonald Electrical
Off-Grid Battery Systems Sunshine Coast
- Free Quotes, Fast Turnarounds
- Over 28,000 Installs Completed
- 30-Day Price Beat Guarantee
Sunshine Coast Off-Grid Battery Systems
Sick of blackouts and power outages you can’t control? Off-grid battery systems from Robbie McDonald Electrical give you full independence, without the fuss. Servicing the Sunshine Coast—including Buderim, Sippy Downs, Maroochydore, Gympie and Caloundra—we install self-sufficient power setups that don’t rely on the grid. With more than 22 years of hands-on experience and 28,000+ installs completed, we build systems that match your property, usage and future plans.
Whether you're remote, building new or just want energy freedom, we’ll deliver a reliable, long-term setup that keeps your home running smoothly day and night. We use high-efficiency solar panels, smart inverters and durable lithium battery banks, with free quotes and a 30-day price beat guarantee.
No guesswork—just dependable off-grid power made simple. Give us a call on
0412 020 609 to get started.
Complete Power Control, Zero Compromise
Off-grid battery systems aren’t just for bush blocks. They're for anyone tired of rising power bills, patchy service or being tied to the grid. These setups combine solar panels, battery banks and inverters to create a standalone energy system that powers your home 24/7. With the right design, you’ll have stable, safe and efficient electricity that works just as well—if not better—than a traditional supply.
Our licensed team tailors each setup to suit your needs, from single dwellings to larger properties with higher demand. We’ll talk you through the right battery capacity, panel size and inverter options, plus future-ready upgrades like EV charging or backup generators.
We use only proven components that handle Australia’s conditions and back our installs with full support. If energy freedom is what you’re after, we’ll help you get there—without compromise.
What is an off-grid battery system?
An off-grid battery system is a standalone power setup that operates independently from the main electricity grid. It combines solar panels with a battery bank and inverter to generate, store and supply electricity directly to your home.
Unlike grid-connected solar, these systems are fully self-sufficient—you generate your own power during the day, store what you don’t use, and draw from the battery at night. They’re ideal for remote areas, farms or properties wanting full control over their power.
How many batteries do I need for off-grid living?
It depends on how much energy your household uses, especially overnight or during cloudy days. Most homes need a battery bank that can supply 1–3 days of power without sunlight.
For example, a typical home might use 10–20kWh of electricity daily, so a 20–30kWh battery setup is common. Battery needs should be sized alongside your solar array and inverter for best results.
Do off-grid systems work in bad weather?
Yes, but performance depends on system design. In cloudy or rainy weather, solar production drops—so the system must have enough battery storage or generator backup to compensate.
Good off-grid setups are sized with weather variability in mind, often including extra solar panels or hybrid inverters to manage low-light days. Monitoring systems help you track usage and make adjustments in real-time.
