6.6kW Solar System

A 6.6kW solar system in Australia is a popular choice amongst homeowners. If you have recently been searching for a solar company online, you would have noticed that a 6.6kW solar system is the most advertised system size. This is because it serves as an entry level solution for those looking to install solar on their residential home or small business. Outback Solar has put together the below guide to help you determine if a 6.6kW Solar System is the right size for your energy needs. Find out more below.

How many panels are there in a 6.6kW Solar System?

The number of panels in a 6.6kW solar system, typically ranges from around 15 to 17, based on the common panel wattage size in Australia, which falls between 390 Watts to 440 watts per panel. For example, if I am using a 440W solar panel, then I will require 15 solar panels to achieve a system size of 6600W or 6.6kW. However, variations may occur based on the individual panel efficiency, physical size, available roof space, orientation (whether installed Landscaped or Portrait), shading issues, and local energy distributor regulations. It is advised to speak to an Outback Solar consultant or installer to determine the optimal configuration tailored to your energy needs and site-specific installation requirements.

How much power does a 6.6kW Solar System produce?

A 6.6kW solar system typically produces an average of approx. 24 kilowatt hours (kWh) of electricity per day, depending on factors such as sunlight hours, installation location, weather conditions, and overall system efficiency. This daily energy output is typically more than what the average Australian home consumes. While the sun is up, the solar system will power various household appliances, lights, air-conditioning, and other electrical devices, significantly reducing reliance on the electricity you purchase from the grid. The excess electricity produced will be sent to the grid, which will be credited to you by your energy retailer in the form of a feed-in tariff. Outback Solar recommends that you use your electircity appliances during the day, as much as possible, in order to consume the electricity produced from the solar system instead of sending it back to the grid.

What size inverter should I use for a 6.6kw Solar System?

In Australia, most 6.6kW solar systems use a 5kW solar inverter for several advantages and reasons. Solar panels often produce less power than their rated capacity due to factors like temperature fluctuations, dirt on panels, weather conditions and efficiency losses in cables. By using a slightly undersized inverter, the solar system can operate closer to its optimal performance level more consistently. Furthermore, Outback Solar recommends people who are interested in getting solar to take advantage of government STC incentives. The incentives are greater as the system size increase with a eligible tolerance of solar panel output up to 33% of the inverters capacity. So in situations, where lets say you have no choice but to use a Inverter capacity of 5kW due to Energy Distributor regulations, it would be a sensible choice to add more panels to your system and claim further STC incentives. 

What’s the price of a 6.6kW solar system?

The price of a 6.6kW solar system can vary depending on several factors, including the quality of the products used, installation complexity, location, and any additional options included such as monitoring or battery storage. On average, in Australia, the price of a quality 6.6kW solar system can range from approx. $5,500 to $9,000 for a quality system and can extend upwards depending on the level of customisation, additional options and installation complexity. Outback Solar recommends that you get quotes from multiple reputable solar installers to get an accurate quote tailored to your specific energy needs and circumstances. Additionally, in Australia there are several incentives and rebates available depending on where you live, which may also impact the overall cost. Please speak to an Outback Solar consultant to get a quote for a 6.6kW Solar System.

Would I need a 6.6kW Solar System with Battery?

To determine whether you need a 6.6kW solar system with battery depends on various factors, including your energy usage behaviour, grid reliability, and individual preferences. A 6.6kW solar system alone can significantly reduce your electricity bills by utilising solar energy during the day, instead of purchasing electricity from your Energy Retailer. If you mainly consume electricity during the night, then a 6.6kW solar system with battery could be beneficial. This setup allows you to store excess solar energy generated during the day and use it during evening hours when solar production is minimal or nonexistent. Furthermore, adding battery storage can provide additional benefits such as energy independence and backup power during power outages. If you experience frequent blackouts or wish to maximise self-consumption of solar energy, a battery investment may be worth looking into. However, if you’re specific goal is to live off-grid, then adding a battery with your 6.6kW solar system is a must. An Outback Solar consultant can help assess your energy needs and determine if a 6.6kW Solar System with battery is right for you.

How much will a 6.6kW solar system save me?

Determining how much a 6.6kW solar system will save you depends on various factors such as the install location, your consumption of the solar energy, electricity rates, and your Feed in Tariff. On average, a 6.6kW solar system in NSW can generate approximately 8,000 to 9,000 kilowatt hours (kWh) of electricity per year, which can significantly offset your electricity bills. The payback period can vary, but many homeowners experience a payback period between 3-4 years. This is typically longer If you were to add a battery with your 6.6kW solar system. Additionally, government STC incentives, state specific rebates and feed-in tariffs can further enhance your savings. Over the lifespan of the system, typically 25 years or more, the cumulative savings from reduced electricity bills can be significant. Our Solar Selector Tool recommends the optimal solar system for your needs and estimates annual solar production and savings.

Another useful resource for Australians interested in exploring energy savings options is the ‘Energy Made Easy’ website, an Australian government initiative designed to help consumers compare electricity offers from different retailers. The website offers tools and information to help consumers understand their energy usage, compare energy plans, and find potential savings. Click Here or Visit www.energymadeeasy.gov.au

Or feel free to consult with an Outback Solar representative who can assess your energy needs and provide you with an accurate 6.6kW Solar System quote.

Get a Quote

Contact Outback Solar to get a quote for a 6.6kW Solar System.