Store the sun, use it after dark.
A home battery captures the solar power your roof produces during the day so you can use it at night — slashing your grid usage and keeping the lights on during blackouts.
A rechargeable energy bank for your home
A home battery — sometimes called a solar battery or energy storage system (ESS) — is a wall-mounted lithium-ion unit that stores electricity generated by your solar panels. Instead of exporting your surplus solar for a small feed-in tariff, you keep it, then discharge it in the evening peak when grid power is most expensive. Popular models include the Tesla Powerwall, Sungrow, BYD, and Enphase IQ Battery.
Charge by day
Excess solar that would have been exported charges the battery instead of leaving your home.
Discharge at night
The battery powers your appliances after sundown, replacing expensive grid electricity.
Backup during outages
Compatible batteries automatically keep essential circuits running during a blackout.
A day in the life of your battery
- 01
Morning: solar starts producing
Panels power the house first. Anything extra is diverted to charge the battery instead of being exported.
- 02
Midday: battery fills up
Most home batteries reach full charge by early afternoon on a sunny day, then any further surplus exports for a feed-in credit.
- 03
Evening: battery takes over
As the sun sets, the battery powers your fridge, lights, TV and heating — no grid power needed during peak-price hours.
- 04
Blackout: seamless backup
If the grid goes down, an islanding-capable battery detects the outage and keeps essential circuits running.
More independence, bigger savings
- Cut evening grid usage
Households with solar + battery typically eliminate 70–90% of their grid consumption.
- State & federal rebates
The 2025 federal Cheaper Home Batteries program plus state incentives can knock thousands off the install price.
- Blackout resilience
Islanding-capable batteries keep your fridge, internet and lighting running when the grid drops out.
- VPP income potential
Join a Virtual Power Plant and earn credits by letting your retailer share stored energy during grid peaks.
Ready to store your solar?
Free battery quotes from CEC-accredited installers matched to your postcode.