A 13kW solar system is a smart choice for bigger households in Melbourne that use a lot of energy. When you choose the right system quality, match it to your daily power needs, and take advantage of technologies like microinverters, you can get the most out of your solar setup. The result? Long-term savings on your electricity bills and a system that works efficiently for your lifestyle.
13kW Solar System Standard Price
With solar prices dropping and generous government incentives in place, 10kW to 15kW solar systems are becoming a top choice for many Australian homeowners. For example, a premium 13kW solar system, complete with a high-efficiency inverter and top-quality panels, starts at around $15,600 fully installed—and that’s before applying any rebates.
Thanks to the federal Small-scale Renewable Energy Scheme (SRES), you can claim a sizeable rebate that cuts down the upfront cost, making it much easier and more affordable to switch to solar.
While there are cheaper options on the market, they often come with trade-offs—lower-quality panels, reduced efficiency, shorter lifespans, and little to no support. In the end, these can cost you far more over time.
At Solar Miner, we focus on quality and long-term value for any solar power system. We recommend only trusted brands with excellent warranties, so you can feel confident that your solar system will deliver strong performance and maximum savings for many years to come.
For larger home solar setups, such as a 13kW system, we usually pair high-quality standard panels with reliable inverters. Over the years, these trusted brands have consistently proven their performance and value through the many successful installations we’ve completed.
13kW Solar System Output Details
A 13kW solar system installed on a north-facing roof in Melbourne can generate an average of around 51kWh of electricity per day. In many cases, our systems deliver even better results thanks to the use of high-quality panels and inverters.
As you’d expect, output is higher in summer than in winter. On a bright summer day, your system could produce over 70kWh, more than enough to cover your daytime energy needs.
Because a system this size generates so much power, it’s worth thinking about how you’ll make the most of it. For example:
Panel placement: Installing panels across different roof sections helps spread energy generation more evenly throughout the day.
Battery storage: Adding a battery lets you store excess solar energy and use it in the evenings, when grid electricity is more expensive.
This way, you get maximum value from your 13kW system while reducing your reliance on the grid.

How Much Will a 13kW Solar System Save Me in Victoria?
A 13kW solar system can make a big difference to your electricity costs, with potential savings of $1,000 to $1,300 every quarter. The exact amount you save will depend on how much energy you use during the day while your system is generating power.
To get the best return on your investment, it helps if your household uses a lot of electricity during daylight hours. For example, large families, homes with pools, or properties that run air conditioning regularly are ideal for larger solar systems.
Want to boost your savings even further? Learn more about how solar power helps cut down your energy bills and how to make the most of your system.
How Many Panels in a 13kW Solar System in Melbourne?
The number of panels in a 13kW solar system depends on the efficiency of the panels you choose. With high-efficiency panels, you’ll need fewer panels to reach the same output.
For example, a 13kW system can be built with just 29 high-efficiency 450W panels instead of 34 standard 390W panels. This not only saves valuable roof space but can also give your solar installation a cleaner, more streamlined look.
Key Takeaways:
Affordable Options and Rebates
A 13kW solar system starts at around $15,600, with generous rebates available through the Small-Scale Renewable Energy Scheme (SRES) to help reduce upfront costs.
Energy Output
In Melbourne, a 13kW system can generate an average of 51kWh per day, and on sunny days it can even produce over 70kWh. This makes it a great choice for large households with high daytime energy needs.
Potential Savings
With the right usage, a 13kW system can save you up to $1,300 per quarter. Homes with pools, air conditioning, or large families often see the biggest savings, since they use more power during the day.
Battery Options for Extra Value
Pairing your system with a battery, such as the Enphase IQ Battery or Tesla Powerwall, lets you store excess solar energy. This means you can use it in the evenings, when grid electricity is more expensive, or even during power outages for added security.
13kW Microinverter System
For larger solar systems like a 13kW setup, we strongly recommend using microinverters. Unlike traditional systems, microinverters make each solar panel work independently. This not only allows for more flexible panel placement but also helps maximise your power output in all conditions.
Microinverters are particularly useful if you’d like to install some panels facing west to capture the afternoon sun, which can be great for time-of-use billing.
Another big advantage is reliability. In a traditional setup, if the central inverter fails, the whole system stops working. With microinverters, even if one panel has an issue, the rest of your system keeps generating power.
Overall, microinverters deliver more flexibility, efficiency, and peace of mind, especially for larger systems. Want to dive deeper? Check out our guide on the 10 key benefits of microinverter systems.
Conclusion :
In conclusion, microinverters are a smart choice for larger systems like a 13kW solar setup. They give you greater flexibility, improved efficiency, and added reliability compared to traditional inverters. By ensuring each panel performs at its best, microinverters help you get maximum value from your solar investment, both now and in the long run.