10KW vs 13KW solar system
Both solar systems are great but you need to decide which one fit the best for your roof, budget, and power
23 December, 2023 by
Ausgreen Solar Solutions, Von Mike
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If you are planning to install solar panels with many panels then 10KW and 13KW both are great options. But to make choice between them, you are in a fix what to choose.

In this blog post, I will comparison between 10kW and 13kW solar panel systems  

I'll cover all the big aspects: efficiency, cost, how easy they are to install, and who they're best for. It's going to be fantastic — you'll have all the information you need to make the best decision for your energy requirements. Let's get started!"

What is a 10kW Solar System?

A 10kW solar system typically comprises around 28 solar panels, each with a capacity of 370 watts. 

A 10kW solar system has many solar panels.

Imagine 10,000 watts, like 10,000 little light bulbs!

It can power a medium-sized house easily.

These systems are designed to cater to households with significant energy needs, potentially reducing electricity bills substantially.

Power Output and Efficiency

On average, a 10kW solar system in Australia can generate around 40 kilowatts per day, varying with location, roof pitch, and other installation-specific factors. The system’s efficiency lies in its ability to first cater to home energy needs, with surplus power being fed back into the grid.

What about a 13kW Solar System?

A 13kW solar system is generally made up of approximately 34 solar panels, each rated at 390 watts. 

It's like having 13,000 little light bulbs.

Big houses love this one because it's so powerful.

It's considered a large-size system in residential settings and is ideal for homes with exceptionally high electricity usage, including those with electric vehicles.

Power Generation Capabilities

In Australia, a 13kW solar system can produce on average 52 kilowatts per day. This output can cover extensive home usage, charge electric vehicles, and still have excess for battery storage or grid feedback.

Comparing 10kW and 13kW Solar Systems


10kW Solar System

13kW Solar System

Number of Panels

~28 (370W each)

~34 (390W each)

Average Daily Output

40 kW

52 kW

Ideal For

High energy consumption homes, future EV owners

Very high energy consumption, larger properties, EV owners

Power Generation

Enough for a medium house

Enough for a big house


10kw solar price is Less expensive

More expensive

Installation Requirements

8kW inverter or two 5kW inverters, possible export limitations

Typically requires three-phase power, export limiting may apply

Pros and Cons

10kw Solar System Pros:
  • Good for medium homes

  • Costs less money

  • Fits on smaller roofs

10kw Solar System Cons:
  • Less power than 13kW

  • Not best for big houses

13kw Solar System Pros:
  • Great for big homes

  • Creates more power

  • Better for the environment

13kw Solar System Cons:
  • Costs more money

  • Needs a big roof

Which System is Right for You?

Choosing bPicking the right one depends on a few things.

Think about:

  • How big your home is

  • How much money you want to spend

  • How much energy you use

Then choose the solar system that fits you best!

Cost and Return on Investment

While the initial investment for a 13kW system is higher, it offers a larger energy output which can be more cost-effective in the long run, especially for households with extremely high energy demands. The 10kW system, being slightly smaller, is less expensive but also produces less energy.

Future-Proofing Your Home

Both systems offer excellent opportunities for future-proofing, especially with the increasing trend towards electric vehicles. A 13kW system, however, provides more headroom for future energy needs.

For those with moderate to high energy needs, a 10kW system is sufficient. 

However, if you anticipate a significant increase in your energy usage or have existing high demands, the 13kW system may be more suitable.

Frequently Asked Questions For 10kw Vs 13ks Solar System

What Determines Solar System Size Choice?

Choosing the size of a solar system depends on energy needs, roof space, budget, and local sun exposure.

How Does A 10kw System Compare To A 13kw System?

A 10kW solar system generates less electricity than a 13kW system, affecting the energy output and potential savings.

What's The Cost Difference Between 10kw And 13kw?

Typically, a 13kW solar system costs more than a 10kW due to higher material and installation expenses.

Can A 10kw System Power An Average Home?

A 10kW system can power most average homes, but exact suitability depends on individual energy consumption patterns.


Both the 10kW and 13kW solar systems offer efficient, cost-effective solutions for different energy needs. Your choice should be informed by your current electricity consumption, future energy plans, and the specific characteristics of your property.

Ausgreen Solar Solutions, Von Mike
23 December, 2023

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