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What Size Solar Battery Do I Need Australian Homeowner’s Guide

Confused about the right solar battery size for your home? Get expert advice on sizing for 6.6kW, 10kW, and 13kW solar systems. Read more to make the right choice.

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What Size Solar Battery Do I Need Australian Homeowner’s Guide

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  1. What Size Solar Battery Do I Need? Australian Homeowner’s Guide What Size Solar Battery Do I Need? Australian Homeowner’s Guide The ideal battery size depends largely on the capacity of your solar panel system and your household’s daily energy habits. To simplify the decision, we’ve broken down common solar system sizes in Australia - 6.6kW, 10kW, and 13kW - along with recommended battery capacities for each. These guidelines can help you match your system’s output with a suitable storage solution, ensuring you get the most out of your solar 1. For a 6.6kW System A 6.6kW solar system typically generates approximately 24–27kWh per day, depending on your location, roof orientation, and seasonal sunlight variations. This size is ideal for small to medium-sized households with average daily electricity needs. 1300 345 365 www.solarjunction.com.au

  2. Recommended battery size: 8–12kWh usable capacity Pairing a 6.6kW system with an 8–12kWh battery allows you to capture excess daytime solar and use it during high-demand periods in the evening. It’s an excellent setup for reducing reliance on the grid, lowering energy bills, and gaining some independence from time-of-use tariffs. For homes looking to store enough power for essential appliances like lighting, fans, Wi-Fi, and small kitchen appliances, this range offers a balanced mix of affordability and functionality. 2. For a 10kW System A 10kW solar system produces around 38–44kWh per day, which is suitable for larger households, families with high daytime usage, or homes with electric vehicles or air conditioning. Recommended solar system battery storage: 12–16kWh usable capacity This battery size enables homeowners to store enough energy for evening use, manage peak-time loads, and even maintain limited backup during grid outages. With this setup, households can significantly reduce electricity bills, especially when paired with smart energy management systems. It also provides an efficient cushion against energy price volatility, making it a popular choice among future-proof homeowners. 3. For a 13kW System A 13kW solar system can output between 50–55kWh daily, making it ideal for energy-intensive households, multi-generational families, or homes running multiple high-consumption appliances. 1300 345 365 www.solarjunction.com.au

  3. Recommended solar system battery storage: 16–20kWh usable capacity This capacity allows for full home usage overnight, supports extended off-grid operation, and delivers robust protection against blackouts. It also suits those with growing energy needs - such as planning to install an EV charger or expand their home systems in the future. With a 13kW setup and a high-capacity battery, you’re equipped to reduce grid dependency, boost long-term savings, and prepare for rising energy prices and grid instability. To Know More About solar-battery-size-guide-australia CLICK HERE 1300 345 365 admin@solarjunction.com.au | www.www.solarjunction.com.au follow on

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