A solar battery is like a home power bank. It stores excess solar power during the day and lets you use it at night or during blackouts. Different chemistries (like lithium or lead-acid) affect cost, safety, and lifespan.
Most lithium batteries last 10–15 years with a warranty of ~10 years. Lead-acid batteries usually last 5–7 years. Lifespan depends on how often you cycle it, depth of discharge, and local climate.
Yes, in many cases. A battery lets you avoid buying expensive evening electricity, improves self-consumption, and keeps the lights on in blackouts. With time-of-use tariffs (cheap daytime, expensive evenings), the savings can be significant.
Without a battery, surplus solar is exported to the grid—usually for just a few cents per kWh. At night, you buy electricity back for 4–5× the price. A battery lets you store that cheap power and use it later.
Most Australian households choose between 7–13 kWh of usable storage. A good starting point is to cover essentials in a blackout (fridge, Wi-Fi, lights) and then match evening usage.
Yes—if installed with an automatic switch and a backup circuit. Most households back up essential circuits (fridge, Wi-Fi, lights, garage door). Whole-home backup is possible but requires a larger battery and higher cost.
Batteries must be installed by licensed electricians. They need proper ventilation, clearance, and weather protection. The case should meet IP ratings (e.g., IP65 dust- and water-resistant). Safety switches and emergency shut-offs are also required.
Yes, many modern batteries are VPP-ready. In a VPP, your battery helps the grid during high demand, and you may earn bill credits or rebates. It’s optional and requires your consent.
Yes. Several states plus the federal government offer rebates or low-interest loans. From mid-2025, a new federal battery rebate will cover up to 30% of system costs (5–100 kWh), cutting payback times to 3–4 years for many households.
List your essential loads (fridge, lights, Wi-Fi).
Add their wattage × usage hours = Wh.
Convert Wh → kWh (÷1,000).
Add ~10% margin for safety. Example: A home using ~30 kWh/day may size for 10–13 kWh of storage.