In Victoria, we offer solar solutions including batteries for existing setups and complete solar systems with panels and batteries. Our aim is to enable homeowners to become grid-independent, with systems that can be tailored to make homes self-sufficient.
Many Australians seek solar batteries to reduce power bills, but are often disappointed by low feed-in tariffs, which limit the financial benefits of solar systems. A common misconception is that adding a battery to an existing solar setup will lead to significant savings. However, many systems, especially older ones with only 3-4kW of panels, aren’t capable of charging batteries effectively due to high household energy consumption, often exceeding 20kWh per day.
For a battery to be effective, a solar system should have at least 6kW of panels for households using less than 20kWh of energy per day. A battery size of 7-8kWh is ideal, with an optimal setup featuring up to 10kW of solar panels and a 10kWh or larger battery.
The cost of adding a solar battery starts at around $10,000, and it’s important to note that this upgrade requires replacing the inverter with a new hybrid model. Additionally, a large inverter is essential for powering the entire home with the battery.
There’s also interest in solar battery systems for charging electric vehicles. For an average household, a 20kW solar array and a 50kWh battery bank are needed. This setup, costing between $40,000 and $50,000, can enable off-grid living and car charging. However, during Victorian winters, grid support may be necessary.
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