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How home batteries work, the main types, and the WA rules that apply from May 2026.
A home battery (also called a solar battery or energy storage system) stores surplus electricity from your solar panels during the day. You can then use that energy at night, or when the grid goes down.
It works like the battery in a phone or laptop, scaled up to run a whole house.
Your solar panels generate electricity during daylight hours. Any excess power not immediately used by your home flows to the battery.
The battery charges throughout the day, storing energy in lithium-ion cells, similar to your phone or electric car battery.
At night or during peak pricing periods, the battery automatically supplies stored energy to your home, reducing grid reliance.
Use your own stored solar energy instead of buying electricity from the grid during peak times. Perth households typically save $1,000-$1,500 a year from self-consumption alone (based on a 10kWh battery, 20kWh daily usage, A1 Midday Saver tariff).
Keep essential appliances running during blackouts. Critical for medical equipment, food preservation, and comfort during Perth's occasional storm-related outages.
Reduce how much you draw from the grid, and limit your exposure to rising electricity prices.
Synergy Battery Rewards pays 70¢/kWh during 15-25 activation events per year. For a 10-13kWh battery, expect $100-180/year from VPP. DEBS peak exports (10¢/kWh 3-9pm) add another $50-100/year. The bigger win is self-consumption savings.
Homes with solar and battery storage can appeal to buyers, and may add $10,000-$20,000 to resale value.
The most popular choice for home batteries, with a solid balance of performance, lifespan, and cost.
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A safer lithium-ion variant with a long lifespan, well suited to Perth's hot climate.
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Older technology rarely recommended for new installations.
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Under the WA framework in force since 1 May 2026, battery installations follow tier and equipment rules. The tier you choose sets your export limit and whether you can earn Battery Rewards.
Use our tools to size a battery, compare your options, and request quotes from verified Perth installers.
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