A 5 kW solar panel system can generate about 20-30 kWh of electricity daily. For this configuration, you’ll need a backup battery with a capacity of 14 kWh.
Installing a 5 kW solar system with battery backup will cost between $17,500 and $23,500 on average.
In this article, we will provide you with a detailed review of the 5kWh solar system with battery price. We will also highlight the popular battery systems you can consider installing alongside your solar system.
On average, a 5 kW solar system costs approximately $6,034, installed. The cost ranges between $5,719 and $6,309. This cost is inclusive of the solar rebate.
The Australian government’s rebate amount depends on the STC zone you live in. Australia is divided into 4 STC zones based on the level of solar radiation and other factors. Let''s find out how much a 5 kW solar system will cost in each zone.
Installing your 5 kW solar system with a battery system will help you store the excess solar energy generated during the day for use later at night or on overcast days when your solar system isn''t producing enough power.
Let''s find out how many batteries you need for your 5 kW solar system and the overall installation cost.
A 5 kW solar system typically generates about 20–30 kWh of electricity daily. A solar battery with a capacity of 14 kWh would be ideal for this solar system.
Depending on the type of battery you choose, you may need one or more batteries to reach the required capacity of 14 kWh. We recommend the Tesla Powerwall 2 battery system, which has a 13.5/14 kWh capacity, as you will only need one battery for your 5 kW solar system. The SonnenBatterie Eco is also a good option.
On average, a 14 kWh battery system costs between $12,500 to $16,000. The actual cost will depend on the type and brand of the battery. For instance, the 14 kWh Tesla Powerwall 2 battery costs approximately $1,000 per kWh, with an overall cost of $14,000.
Installing a 5 kW solar system with a battery backup (a Tesla Powerwall 2 battery in this case) will set you back by approximately $19,655.
This cost may vary depending on the type and quality of solar panels and batteries you choose. Cheaper panels and batteries will be much cheaper to install.
On average, solar batteries cost between $668 and $2,240 per kWh. However, the exact cost varies depending on your preferred brand, battery type, and capacity.
The following table displays the average battery installation prices, GST included.
There are many brands of solar batteries on the market, but they are divided into 3 broad categories:
The type and brand of battery system you choose will depend on your budget and preferences. Of the three types named above, lithium-ion battery systems are the most efficient as they have a larger storage capacity and a longer life span. However, they are quite expensive.
Yes. Adding a battery backup system to your solar system allows you to use more of the electricity you generate. Solar batteries help you store the surplus energy your solar system generates for use later in the day, at night, during power outages, and on overcast days.
With solar batteries, you will reduce the amount of electricity you draw from the grid when your panels are not generating energy. Therefore, your overall electric bill will be significantly low.
There are several factors that can affect the cost of solar systems with battery storage. They include:
Installing solar batteries has many benefits, including a reduced electric bill and staying powered during power outages. Whether you need a battery system will depend on your needs and preferences.
Let''s find out the pros and cons of installing solar batteries.
A 14 kWh battery has a high storage capacity and can last between 14 and 18 hours in blackout conditions. The battery will drain quickly if you run heavy-duty appliances like air conditioners and washers and dryers.
Under proper care and maintenance, the battery can serve you for about 10 to 15 years before it needs replacing. This means you will need to replace our battery system at least once or twice during the lifespan of your solar panel system, which is usually 25 to 30 years.
Yes. AC batteries are flexible and can be compatible with any solar PV system so they can be retrofitted to your solar system. You may however need an inverter system for the batteries and extra solar panels for maximum power generation.
An average Australian homeowner can save anywhere between $100 and $1,000 per year with a battery backup system, depending on the size of the battery and consumption habits.
An unsubsidised battery system can take around 10 to 20 years to fully pay for itself, depending on its capacity, size, and type. Subsidised battery systems can pay for themselves sooner.
Although some homeowners may have the skills to install solar panels and battery systems, it is not recommended to DIY the installations due to safety concerns. These systems should be installed by licensed and accredited electricians in accordance with Australian standards.
An average Australian homeowner can save anywhere between $100 and $1,000 per year with a battery backup system, depending on the size of the battery and consumption habits.
Table of Contents
5kWh solar systems are now the go-to for Aussie families, especially those with 3 to 4 members, fitting their energy needs like a glove [1]. They’re a hit because they crank out heaps of power without breaking the bank.
A 5kWh solar panel system will cost you between $5,719 and $6,309 installed [2–3]. The average price for a 5kw system in 2024 is $5,975.
The government solar rebate varies by the state you live in. For a 5kW system in NSW, QLD, SA and WA you will get a $1,886 rebate. For VIC and TAS, the rebate is $1,611.
This is not a fixed price and will go up or down by about 5% depending on the current price of STC’s.
As you can see, prices do vary depending on where you live in Australia and mostly due to the government rebates being more generous in some states. As you can see Western Australia is a full 12.72% less than the rest of the country on average.
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