Solar Batteries Melbourne

A solar battery stores the surplus power your panels make during the day so you can use it at night instead of drawing from the grid.

By day your panels usually make more power than you use. Without a battery that surplus goes to the grid for a small credit. A battery keeps it instead, then runs your home in the evening on your own stored power rather than peak-rate grid electricity. It all happens automatically through the inverter.

If you already have working solar, a retrofit battery is usually the simplest path. If you are starting fresh or replacing an ageing inverter, a hybrid system designs panels and storage together from day one.

A retrofit battery is AC-coupled alongside your existing inverter, so you keep what you already own. It suits households with a system less than eight years old that is performing well. A hybrid inverter connects the battery on the DC side, which raises round-trip efficiency from roughly 90 to around 96 to 98 percent and gives you a cleaner single-system design. If your current inverter is approaching end of life, replacing it with a hybrid while adding storage often makes more economic sense than a retrofit onto ageing equipment. We help you map out both paths in your free quote so you can compare them clearly.

Sizing depends on your solar generation surplus and your evening demand. A 4-person Melbourne home with a 6.6 kW solar system typically suits 10 to 13 kWh usable capacity.

Oversizing a battery means you pay for capacity that does not charge on most Melbourne days. Undersizing means the battery fills and exports before evening demand arrives. The starting point is your generation data - how much surplus your panels produce after household base load - and your smart meter interval data showing when you actually draw power. Homes with EV charging, ducted air conditioning, or pool pumps will often benefit from larger or modular capacity. We size from your actual data, not a rule-of-thumb estimate.

Only if it is specifically configured for backup. Many standard battery installs run in self-consumption mode only and shut down safely during a grid outage.

A backup-capable battery uses a transfer switch that detects a grid outage, disconnects from the grid within milliseconds, and switches your home to island mode. Your solar panels can continue to generate and recharge the battery during a daytime outage. True backup requires the right inverter and changeover setup from the start - it is not something that can easily be added later. We specify backup capability upfront for households where outage resilience is a priority.

A Virtual Power Plant links thousands of home batteries so the grid can draw on their stored energy at peak times, and you earn credits for sharing it.

A VPP is a network of home batteries a provider can call on together at peak times, usually hot evenings when Victorian demand spikes. When your battery shares stored power during an event, you earn a credit, and your own essentials stay covered first. You keep control the rest of the time. Since 1 July 2025, on-grid batteries that receive the federal STC rebate must be VPP-capable at install - you do not have to actually join a VPP, but the hardware needs to support it. Not every battery suits every program, so we check your eligibility before you commit.

Yes. The federal Cheaper Home Batteries Program has been running since 1 July 2025 and delivers an indicative discount of around 30 percent through STCs at the point of sale.

The Cheaper Home Batteries Program uses Small-scale Technology Certificates to reduce the upfront cost of an eligible battery. Since 1 May 2026, the STC rate tapers for usable capacity above 14 kWh, so the proportional benefit is highest for typical residential sizes. The exact discount depends on your usable capacity, the STC market price on your install date, and whether your system meets eligibility criteria (solar-paired, VPP-capable on-grid hardware, CEC-accredited installer). Solar Victoria's interest-free battery loan is not currently open to new applications. The federal program is the main upfront incentive right now. We confirm exactly what you qualify for in your free quote - all figures here are indicative for 2026.

Your switchboard, inverter compatibility, roof orientation, network export limits, and tariff structure all affect which battery suits you and how well it performs.

A site assessment is not a sales visit - it is the data-gathering step that determines the right system. We review your existing inverter's compatibility with the battery being considered, your switchboard's capacity for a new circuit, the wall space and temperature conditions for mounting, and your distributor's current export limits (which affect how much surplus your system can put back to the grid). Getting these details wrong leads to either an incompatible battery or a system that does not perform as well as it could. The assessment is free and informs the written quote.