In the picturesque region of Victoria, Australia, the city of Ballarat has found its sweet spot with a 10kW off-grid solar system, perfectly catering to the typical Australian household’s daily energy usage of 16-20kWh. However, as the crisp Ballarat winter sets in, solar panels are put to the test, with each kW generating approximately 2kWh of electricity per day. It’s worth noting that Ballarat experiences particularly dull winters, which can further challenge solar energy production.

But what happens when we consider doubling the system to 20kW? Let’s delve into the potential advantages and considerations for Ballarat homes contemplating this upgrade.

Enhanced Energy Production

Doubling the system size to 20kW could potentially yield around 40kWh of electricity per day during winter. This surplus energy can be stored for later use or allocated to additional household needs, providing a comfortable buffer for days with lower sunlight.

Inverter Considerations

While a 10kW inverter is sufficient for basic household energy needs, upgrading to a 16-20kW inverter is recommended for households looking to charge an electric vehicle. This upgrade ensures that there are extra kilowatts available for charging, without compromising the household’s energy supply.

Expanded Battery Storage

To fully capitalize on the increased energy production, a larger battery bank is essential. A 20kWh battery bank would offer ample storage, ensuring that excess energy is not wasted and providing a reliable power reserve for extended periods of low sunlight.

Charging Electric Vehicles

A significant advantage of a 20kW system is the capability to charge an electric vehicle. With the surplus power generated, especially during the sunny summer days and even on brighter winter days, Ballarat homeowners can comfortably charge their electric cars, further enhancing their energy independence.

Considerations for Sunnier Climates

For regions with more sunshine, like Queensland, a 20kW system could be even more beneficial. The increased solar energy production would not only cover daily household needs but also provide enough surplus power to run air conditioning overnight, especially during the hot summer months. However, this would require an expanded battery storage capacity to ensure a continuous power supply.

For Ballarat homes in Victoria, Australia, considering an upgrade from a 10kW to a 20kW off-grid solar system, the potential for increased energy production and the added convenience of electric vehicle charging presents an attractive opportunity to embrace a more sustainable and independent lifestyle.