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Note: This is an illustrative scenario representing a typical household configuration—not a documented case study from a specific customer. Figures shown are typical ranges based on industry patterns and manufacturer specifications.
How a typical Perth family might size their battery for evening usage
Typical Capacity
10-13 kWh
Typical Solar
6-8 kW
Typical Savings
$1,000-1,500/year
Typical Payback
7-9 years
Many Perth families with school-age children find their solar panels export most of their generation during school hours while they pay higher rates in the evening. A battery can help capture this daytime solar for evening use.
A typical family with 6-8kW of solar panels may export 60-70% of their solar generation during school hours, then buy grid power from 4pm onwards when the family returns home and starts using appliances, cooking dinner, and running entertainment systems.
Common goals for families include: reducing evening electricity bills, having backup power for essentials (fridge, internet, lights) during outages, and making better use of existing solar panels that were over-generating for daytime needs.
For families with evening usage of 8-12 kWh (4pm to 10pm), a 10-13 kWh battery typically covers most evening needs without over-sizing. LFP chemistry is often preferred for longer lifespan and safety, especially in homes with children.
Look for installers with experience in your chosen battery brand who offer workmanship warranties (typically 5-10 years) on top of the manufacturer's product warranty. Local installers can provide faster support if issues arise.
Note: These are typical outcomes based on industry patterns. Individual results vary based on actual usage, solar generation, and system configuration.
These are typical figures. Get matched with installers or use our calculator for estimates based on your specific situation.