Our Solar blog

What is the Best Home Solar System?

The best home solar system in Australia

Home solar systems have grown in popularity in recent years. Reduction in electricity bills, increase in property value, and contribution to a greener future are just some of the benefits that owners can reap from solar energy. But what is the best home solar system?

The hype surrounding solar energy continues to build, and many more homeowners are starting to look at solar energy. Determining the best home solar system requires some important information, and all of your questions will be answered in this comprehensive article.

The best type of solar system for homes

In general, there are three types of solar systems for residential homes. Each comes with its own distinct advantages and disadvantages:

ComparisonOn-Grid SystemHybrid SystemOff-Grid System
AdvantagesSince you have access to the grid, you don’t have to spend money on batteries. With access to both the grid and batteries, you have a strong backup when a blackout occurs. You are fully independent of the grid, meaning you no longer have to pay for electricity bills.
Who’s it for?It’s the most cost-effective solution to cut down your energy bills gradually.It’s the best solution for those who live in an area with frequent blackouts or need to run appliances 24/7.It’s the best solution for property owners who wish to deliver power to remote areas but are hampered by the high costs of building access to the grid.
DisadvantagesSince you still rely on the grid, you may be prone to power outages.It’s even more expensive than an On-Grid system, and backup power typically isn’t worth the investment unless absolutely necessary.With the addition of batteries, the upfront cost is much more expensive. At the same time, you are going to need serious technical expertise as you will lose all your electricity should the system fail. 

The best solar system size for a home

A 6.6kW system has been the go-to system size for quite some time now. However, with advancements in solar technology and the fall in solar panel prices, the number has increased significantly. By September 2023, the average solar system size in Australia had hit 9.3kW in number, as you can see in this report from the Australian Energy Council.

So what size is best for a residential solar system? There’s no universal answer to that question. But, you can find out the best size for your system by doing a series of calculations. Read more about that in our article, ‘How Big of a Solar System Do I Need at Home?’

There are two variables you need to know before you can calculate the right size for your solar system: your daily electricity consumption and the peak sun hours in your area. In the table below, we’ve covered a simple example to give you an idea of the best solar system size, based on your daily electricity consumption.

We picked Melbourne as the example, with the average peak sun hours of 4.1. The calculation is daily power usage divided by peak sun hours.

Daily power usageSolar system sizeDaily power usageSolar system size
15kWh3.7kW27kWh6.6kW
18kWh4.4kW30kWh7.3kW
21kWh5.1kW33kWh8.0kW
24kWh5.9kW36kWh8.8kW

The best solar panels for home

The best home solar panels differ from one home to another, as the choice depends on the objectives you want to achieve, as well as warranty preferences. We have listed some of the best solar panels, along with their advantages:

CompanyModelEfficiencyDegradation RatePerformance Warranty
RECAlpha Pure-RUp to 22.3%0.25%/year25 years
Alpha Pure-RXUp to 22.6%0.25%/year25 years
SunPowerMaxeon 6Up to 22.0%0.25%/year40 years
QcellsQ-Peak DUOUp to 21.7%0.5%/year25 years
TrinaVertex S+Up to 22.5%0.4%/year30 years
Vertex NUp to 22.5%0.4%/year30 years
JinkoTiger NeoUp to 22.72%0.4%/year30 years
Tiger ProUp to 21.48%0.45%/year30 years

Factors you need to consider when choosing a solar panel

Choosing the right panels for your system is not just about finding the cheapest option. There are several considerations you need to take into account, including:

  • Cost – a universal yet important factor to consider when making a purchase. More expensive solar panels usually come with better performance and warranty. 
  • Type and efficiency – each type of panel has its fair share of pros and cons, with monocrystalline having the highest efficiency rate, but with a more expensive cost.
  • Durability – includes annual degradation rate and temperature coefficient solar panels. While the annual degradation rate indicates a permanent decrease in system performance every year, a temperature coefficient means a dynamic decrease in performance every degree the temperature rises.
  • Warranty – includes performance warranty and product warranty. The industry standard for performance warranty is 25 years, whereas the product warranty period ranges from 10 to 25 years.

The last word

So what is the best home solar system for you? At Sungain Solar, we understand that each home is unique, and so are the energy needs of its residents. Our team of experienced professionals is dedicated to guiding you through the process of choosing the best solar system for your home.

Free Solar Consultation Form