Join your neighbours in going solar!

United Solar Energy is a team of engineering experts ready to help you find the right solar system! Start with your home address for a solar estimate.


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Solar is the way to go

More than 1.6 million Australians are enjoying solar energy every day. They save up to $1,000 per year and don't have to worry about rising electricity prices anymore.

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power to the people

Start producing your own solar energy today and become empowered by the sun. It’s time to take control of your personal energy needs.

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bigger bang for your buck

Save money on your energy bill, protect yourself from rising electricity prices and enjoy a world where you get paid for electricity.

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Love our planet

Don’t forget you’re also saving the planet! Share this love and invite friends and family to join you in going solar.


What our solar customers say

We live in a country that’s full of sun so for us it was totally clear that solar energy was the right option to save money by cutting down our energy usage.

"Keep up the great work!"


How we will help you

Three simple steps
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Your solar profile

Tell us where you live, so that we can make an analysis of your roof.

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Personalise your profile

Get a detailed solar estimate by informing us about your personal energy needs and preferences.

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Your solar estimate

Save your solar estimate for later or book a session with one of our energy solution providers.


See your solar profile now

Start with step one:

Fill in your home address for an instant analysis of your roof.


Why United Solar Energy?

Since 2009, United Solar Energy has grown into a country wide business, we have partners all over Australia delivering energy cost reductions for families, businesses and government buildings. Today, we’re an Clean Energy Council approved retailer with over more than 10,000 solar systems installed in Victoria.

We started as a local solar energy provider with a small team of dedicated people helping people just like you choose products that help reduce the cost of using power by switching to solar power for as little as possible.

Our strong volume of clients helps us negotiate better priced solar packages that all our customers can afford. Our team always delivers quality solar packages at lower prices than our competition. We also have $0 deposit terms via our Energy Flexi Plans so that every family can afford to switch to solar electricity.

We’re here to help you find the right solar system for your house. That’s why we developed this online tool to help you choose the right solar system based on your personal energy needs and preferences. You can easily book a date to speak to one of our energy solution providers or feel free to give us a call on 1800 00 SOLAR | 1800 007 652 and start reducing the cost of using electricity today.

Our team will take the solar journey with you without paying through the roof.

What is a solar system?

With a solar system you’ll start producing your own solar energy. A solar system consists out of solar panels, an inverter, a balance of system and a grid-connect solar meter.

The solar panels collect energy from the sun using photovoltaic cells. Solar panels have an average lifespan of 25 to 30 years. The inverter converts the energy generated by your solar panels from direct current (DC) into alternating current (AC) - the grid voltage - to either use within your home or to export to the grid. The average lifespan of an inverter is 10 to 15 years.

There are two types of inverters. A standard string inverter is the most commonly used and the lowest cost type of inverter that sits on the side of your house. A micro-inverter is a small inverter that sits directly under the solar panel on your roof. This type of inverter is commonly used when there’s partial shading on your roof. Shading can lower the performance of your solar panels with up to 20%. We’ll make sure that we choose the type of inverter that perfectly suits your personal situation.

We connect your solar system to the grid using a grid-connect solar meter. This solar meter measures the amount of solar energy you’re exporting back into the grid. Your energy retailer can then pay you for this excess solar energy with a feed-in tariff.

What should I know about batteries?

Batteries help you maximise the value of your solar system. With a battery you can store your excess solar energy during the day for overnight use. When sizing batteries it’s important to understand your personal energy needs. Every household has its own way of using energy throughout the day. Some use most of their energy during the day, others during the night. By personalising your solar profile we can help you find the right system.

Installing a solar system means that you’ll start producing your own solar energy during daytime. This means that your financial benefit will be the greatest when you use most your energy during the day. If your solar production exceeds your energy consumption, you’ll start exporting the excess solar energy back into the grid. You receive little value for this solar energy you’re selling back into the grid and that’s where batteries come in. A battery maximises your energy independence, which is the amount of energy used from the sun to offset the energy you buy from the grid. We see energy independence as the number of hours per day your home is being powered by energy from your solar system.

A battery enables you to store excess solar energy for overnight use rather than selling it back into the grid. Batteries are becoming rapidly more affordable and widely applicable. Experts see batteries as a gateway technology in the transition of our energy system to one powered by the people.

Whereas a battery is just a device to store energy, software is required to control battery. Getting a good energy management system for your battery helps you make the most out of it. This software might be part of the battery or can be bought separately as an add-on.

In the near future our energy system will be powered by the people. Solar and batteries have the unique potential to enable homeowners to share their solar energy with friends and family in local communities.

How do batteries work?

A battery is essentially a box of chemicals that uses a chemical reaction to store energy. Every chemical has its own characteristics and that’s why you can easily get lost when reading through the product sheets of different batteries. There are three key features that you should remember when choosing a battery: chemistry, usable capacity vs. power rating and warranty vs. cycles per day.

The chemistry explains the chemical properties of a battery. Most of the old batteries are lead-acid, but increasingly the industry is shifting toward lithium-ion. Today, lithium-ion is used in most mobile devices and electric vehicles because of a combination in price, weight, capacity and lifespan.

Usable capacity (in kWh) is the amount of energy stored in a battery that you can actually use on a regular basis. Usable capacity is derived from the total capacity (in kWh) of the battery by considering the point towards the battery can be discharged (depth-of-discharge in %). The power rating (in kW) of a battery explains you something about the rate at which the usable capacity is either charged or discharged. The higher the power rating the stronger a battery is.

Obviously, you want your battery to last as long as possible. Over time batteries will start to degrade. Degradation means that the usable capacity decreases and therefore its performance. The warranty is an important indicator for performance of the battery over time. The warranty is either expressed in a number of years or the amount of cycles a battery can handle at a certain depth-of-discharge. A cycle is a charge and discharge event. Dividing the total amount of cycles by the warranty period gives your the cycles per day. The higher the cycles per day the longer your battery will maintain its performance.

Will a battery save me money?

Although a battery will definitely save you money over time, they’re still relatively expensive when looking for a high return on investment. The payback period or the time it takes for a battery to pay for itself depends on many factors, which makes it hard to calculate.

For a positive return you always want your payback period to be shorter than the warranty period, which is for batteries around 10 years. You can calculate this by dividing the system costs with the annual bill saving. Unfortunately, batteries do not yet pay for itself. Solar, on the other hand, does pay for itself and gives an excellent return on investment. If you consider adding a battery in the near future, make sure you get enough solar to cover your personal energy needs.

If you’re less motivated by financial returns, but you rather become independent from your energy retailer, then a battery might be the right option for you. Include a battery in your personal offer and we’ll make sure you maximise your energy independence.

For the early adopters amongst us, innovative technology, such as batteries, might be the thing you’re looking for. Batteries are considered a gateway technology that helps us unlocking our new energy future. By installing solar and batteries combined with smart software you can become part of a fleet of solar households, also known as a “virtual power plant”. A virtual power plant synchronises multiple solar battery systems to sell energy back to the grid when the grid needs it the most. Virtual power plants can responds much faster at a local level than coal- and gas-fired power plants.

What is a Clean Energy Counsil approved retailer?

The Clean Energy Council is the peak body for the clean energy industry in Australia. Accreditation with the Clean Energy Council gives installers access to continuous professional development and technical support to ensure the best possible standard for solar PV installations. A Clean Energy Council accredited solar installer is certified and trained to ensure the installation of your solar system meets industry best practice standards and all relevant Australian standards.