13kW Solar System Price in Australia — A Complete Guide by Ads Solar

As energy prices continue to rise and environmental awareness grows, Australian homeowners and business owners are increasingly turning to solar energy to power their properties. Among the most efficient and cost-effective choices is the 13kW solar system. This size is perfect for larger households or small-to-medium businesses with high energy consumption. But what does a 13kW solar system cost in Australia? What factors influence the price? And is it worth the investment?

In this comprehensive guide, Ads Solar breaks down everything you need to know about 13kW solar system prices in Australia, installation options, benefits, savings, and more.

What is a 13kW Solar System?

A 13kW solar system is a high-capacity solar power system capable of generating approximately 50 to 55 kWh per day under optimal conditions. It typically consists of:

• 30 to 36 solar panels, depending on panel wattage (usually 370W–450W)

• A 13kW inverter (or two 6.5kW inverters in some setups)

• Optional battery storage for energy independence

This system is suitable for:

• Large residential homes with high energy needs

• Households with electric vehicles

• Properties running home-based businesses

• Small to medium commercial properties

13kW Solar System Price in Australia

The price of a 13kW solar system in Australia can vary based on several factors, including the quality of components, brand of inverter and panels, installation complexity, and eligibility for government rebates.

System Type Price: Budget System $6,000 — $11,500

Note: These are indicative prices as of 2025. Actual costs may vary based on location, hardware, and specific site requirements.

What Affects the Price of a 13kW Solar System?

1. Solar Panel Brand and Efficiency

Higher-efficiency panels from top-tier manufacturers such as SunPower, REC, Canadian Solar, and Jinko Solar tend to cost more but deliver better performance and longevity.

2. Inverter Quality

The inverter is the heart of your solar system. Premium brands like Fronius, Sungrow, and SolarEdge offer superior monitoring, durability, and performance.

3. Installation and Labour Costs

Complex roof designs, multi-story homes, and additional switchboard upgrades can increase the total installation cost. Ads Solar includes a detailed site inspection before finalising quotes.

4. Battery Storage

Adding a solar battery (e.g., Tesla Powerwall, Sungrow Battery) can raise the cost by $8,000 — $15,000, but it enhances energy independence and backup during blackouts.

5. Government Rebates and STCs

The Small-scale Technology Certificates (STCs) scheme can significantly reduce upfront costs. For a 13kW system, STCs can equate to thousands in savings.

How Much Can You Save with a 13kW Solar System?

The savings depend on your location, energy usage, and solar feed-in tariffs.

📍 Estimated Annual Savings:

• Sydney: $4,000 — $5,500 per year

• Melbourne: $3,800 — $5,000 per year

• Brisbane: $4,200 — $5,700 per year

• Adelaide: $4,000 — $5,300 per year

• Perth: $4,000 — $5,500 per year

These figures assume 50–55 kWh daily output and partial self-consumption.

Payback Period

Depending on your energy usage and system cost, the payback period for a 13kW solar system in Australia ranges from 3 to 6 years. After that, your solar energy is essentially free!

Is a 13kW Solar System Right for You?

Here are some key factors to help you decide:

✅ You Might Need a 13kW System If:

• Your daily energy usage is 40kWh or more

• You own a large house with multiple air conditioners, electric water heating, or pool pumps

• You have or plan to buy electric vehicles

• You run a home-based business

• You want to future-proof your home with battery storage or off-grid capabilities

System Output: How Much Energy Does a 13kW System Produce?

On average, a 13kW solar system produces between 47–55 kWh per day, depending on your location and weather conditions.

Battery Storage for a 13kW Solar System

Pairing your solar system with a solar battery allows you to store excess power generated during the day for use at night or during power outages.

Popular Battery Options:

• Tesla Powerwall 2 (13.5 kWh)

• Sungrow SBR096 (9.6–25.6 kWh scalable)

• LG Chem RESU

• Alpha ESS

Adding a battery increases your self-consumption and improves energy independence but does increase the total system cost.

Why Choose Ads Solar for Your 13kW Solar Installation?

At Ads Solar, we pride ourselves on offering:

• Premium solar panels and inverters

• Customised system designs

• Clean Energy Council (CEC) accredited installers

• 10–25 year product warranties

• Excellent post-installation support

• Flexible payment plans and zero-deposit options

We serve residential and commercial clients across Sydney, Melbourne, Brisbane, Adelaide, and Perth, helping thousands of Australians switch to solar with confidence.

13kW Solar System Packages Available at Ads Solar

We offer a range of system packages to suit different budgets:

🌞 Budget Package

• Tier-1 solar panels

• Quality inverter (Growatt or GoodWe)

• STC rebate included

• 10-year installation warranty

🌤️ Mid-Range Package

• High-efficiency panels (Jinko, LONGi)

• Inverter from Sungrow or Fronius

• Online monitoring

• 15-year product warranty

☀️ Premium Package

• SunPower or REC Alpha panels

• Fronius or SolarEdge inverter

• Solar battery add-on (optional)

• 25-year panel performance warranty

• Smart monitoring system

Get in touch for a free, no-obligation quote based on your energy needs.

FAQs — 13kW Solar System Price Australia

💬 Q1: How many panels are in a 13kW solar system?

A 13kW system typically has 30 to 36 panels, depending on the wattage of each panel (e.g., 370W–450W).

💬 Q2: Can I install a 13kW system on a residential property?

Yes, provided you have sufficient roof space and approval from your local DNSP (Distributor Network Service Provider).

💬 Q3: Can I add a battery later?

Absolutely. Ads Solar systems are battery-ready, meaning you can upgrade in the future as your energy needs grow.

💬 Q4: Are 13kW systems eligible for rebates?

Yes. Systems under 100kW are eligible for STC rebates, which can reduce your cost by thousands.

💬 Q5: Is 13kW too big for my home?

If your household uses over 40kWh daily, or if you plan to expand energy usage, it’s a great fit. Our team can assess your usage and recommend the right size.

Final Thoughts — Is a 13kW Solar System Worth It?

A 13kW solar system is a powerful, future-ready solution for Australian homes and businesses with high energy demands. With generous government incentives, rising electricity prices, and falling solar technology costs, there has never been a better time to invest.

At Ads Solar, we make the switch easy. Our team will help you from quote to connection, ensuring you get the best 13kW solar system in Australia — tailored, reliable, and affordable.