5kW Solar System

In Australia, a 5kW solar power system was the go to choice for many homeowners seeking to switch to solar energy. They were popular because of their ability to efficiently meet the energy needs of an average household. However, as the solar industry evolved, there has been a shift towards homeowners and businesses opting for larger solar systems with a 6.6kW solar system now considered the entry level and a 13kW solar system a robust, future proof investment if roof space permits. As a result, the once popular 5kW systems are gradually being replaced by larger solar systems that offer greater savings and energy independence. Despite this trend, the 5kW solar system continues to offer significant benefits, especially for smaller Australian households or those who cannot fit a larger system on their roof. Here's everything you need to know about 5kW solar systems:

How many panels make a 5kW Solar System?

The number of panels in a 5kW solar system, typically ranges from around 11 to 13, 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 390W solar panel, then I will require 13 solar panels to achieve a minimum system size of 5000W or 5kW. However, variations may occur based on the individual panel specification, available roof space, orientation (whether installed Landscaped or Portrait), shading issues, and local grid regulations. It is advised to speak to an Outback Solar specialist or installer to determine the ideal configuration customised to your energy usage and specific circumstances.

What is the output of a 5kW Solar System?

A 5kW solar system typically has an output of approx. 20 kilowatt hours (kWh) of electricity per day, depending on factors such as sun exposure, location of install, weather, and solar panel efficiency. This daily energy output covers the average Australian household. The 5kW solar system will power during sunlight hours various home appliances, lights, heating and cooling, and other electrical devices, significantly reducing reliance on the grid network. The surplus electricity produced will be sent to the grid, which will be credited to you by your electricity company in the form of a feed-in tariff. Outback Solar advises that you use your household appliances during the day, to maximise consumption of the solar energy produced and not having to send it back to the grid in the form of a feed-in tariff.

Should I install a larger inverter on my 5kW Solar System?

Installing a larger inverter on your 5kW Solar System might seem like a good idea as it potentially allows for future expansion and more power, however there are several points to evaluate. Firstly, it’s essential to check if your local grid network will allow oversizing an inverter, as 5kWs is typically the maximum inverter capacity permitted in many Australian areas. Oversizing the inverter beyond the system’s panel output and capacity may lead to reduced efficiency as the inverter is not working at its ideal rating. Additionally, opting for a larger inverter on a 5kW solar system may lead to warranty concerns. Manufacturers typically provide warranties based on the system’s rated capacity. Please speak to an Outback Solar consultant if you anticipate future upgrades as there could be better alternatives than increasing the size of the inverter beyond your 5kW Solar System.

What’s the cost of a 5kW solar system?

The cost of a 5kW solar system can change depending on a number of factors, including the quality of the components used, installation issues, location, and any additional features included such as consumption monitoring. On average, the cost of a quality 5kW solar system in Australia can range between $4,500 to $8,000 for a premium system and can extend upwards depending on extra options, and installation difficulty. Outback Solar advises that you get quotes from a number of good solar installers in the market to get an accurate estimate designed to your specific needs and specific circumstances. Additionally, in Australia there are many incentives and rebates available depending on where you live, which may also impact the overall cost. Please speak to an Outback Solar specialist to get a quote for a 5kW Solar System.

Would I require a 5kW Solar System with Battery Storage?

To determine whether you require a 5kW solar system with battery storage depends on various factors, including your energy usage pattern, grid reliability, and individual preferences. A 5kW solar system alone can put a dent in your electricity bills by using solar energy while the sun is up, instead of importing electricity from the grid . If you mainly consume electricity during the evening, then a 5kW solar system with battery storage could be an advantage. The solar system coupled with battery allows you to store excess solar energy during the day and use it during the night when solar does not work. Furthermore, adding battery storage can provide additional benefits such as resilience to power outages. If you wish to maximise your residential solar investment, a system tied in with a battery may be the way to go. Otherwise, if you’re goal is off-grid living, then you should add battery storage with your 5kW solar system. An Outback Solar consultant can help assess your energy needs and figure out if a 5kW Solar System with battery storage is the right solution for you.

What are the savings with a 5kW solar system?

With favorable government incentives such as STCs, state government rebates, feed-in tariffs, and reduced electricity bills, a 5kW solar system offers compelling long-term savings potential. Our Solar Selector Tool can help estimate annual solar production, savings, and payback periods based on your location and energy consumption patterns.
On average, a 5kW solar system in NSW can generate approximately 7,000 to 8,000 kilowatt hours (kWh) of electricity per year, which can significantly offset your power bills. The payback period can vary, but many customers experience a payback period between 3-3.5 years. This could be longer If you opt to add a battery with your 5kW solar system. 

Energy Made Easy is 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 to learn more

Or feel free to speak with an Outback Solar consultant who can assess your energy needs and provide you with an accurate 5kW Solar System quote.

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