How Does Solar Power Work?

Simple explanation of turning sunlight into usable electricity

Solar power captures energy from sunlight and converts it into electricity for your home. During the day, solar panels generate electricity whenever sunlight reaches the solar cells. An inverter converts this electricity into usable power, which is supplied directly to your appliances, lighting, and electrical systems. If your solar system produces more electricity than your household uses, the excess energy can be exported to the grid or stored in a solar battery for later use. Understanding how solar works helps homeowners make informed decisions about solar panels, battery storage, energy savings, and long-term electricity costs.

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How Solar Panels Generate Electricity

Solar panels generate electricity using photovoltaic (PV) cells that convert sunlight into electricity. When sunlight strikes these cells, it creates an electrical reaction that produces direct current (DC) electricity. This process happens automatically whenever daylight reaches the panels, even on cloudy days.

The electricity produced by solar panels is usually not usable directly by household appliances, as most Australian homes operate on alternating current (AC). The solar inverter converts the DC electricity generated by the panels into AC electricity that powers everything from lights and televisions to refrigerators and air conditioning systems.
Once converted, the electricity is supplied to your home and used by appliances operating at that moment. A common misconception about solar power is that the electricity generated by the panels is automatically stored. In reality, your home uses solar electricity first, reducing the amount you need to purchase from your energy retailer.If your solar panels generate more electricity than your household uses, the excess energy is not wasted.

Depending on your system setup, surplus electricity can be exported back to the grid for a feed-in tariff or stored in a compatible solar battery for later use. This lets homeowners make greater use of the energy their system generates and reduce reliance on the grid.

Modern solar systems are highly efficient and require little ongoing maintenance. While output varies depending on factors such as roof orientation, panel quality, shading, and weather, solar panels generate electricity whenever sufficient sunlight is available. For many Australian households, this means producing a significant portion of their daily energy needs directly from the sun.
Solar Power Flow

How Solar Power Flows Through Your Home

Solar power moves through a simple process: sunlight is captured by your panels, converted by your inverter, used by your home first, and any excess energy is either exported to the grid or stored in a battery.

1

Sunlight Hits Solar Cells

Solar panels capture sunlight through photovoltaic cells on your roof.

2

DC Electricity Is Created

The solar cells generate direct current electricity from sunlight.

3

Power Flows To Inverter

The electricity travels from the panels to the solar inverter.

4

DC Converts To AC

The inverter converts solar electricity into usable household power.

5

Your Home Uses It First

Appliances, lights and electrical systems use solar power before drawing from the grid.

Step What Happens What It Means For Your Home
Solar Panels Generate Power
 DC electricity created Your solar panels begin producing electricity whenever sufficient sunlight reaches the solar cells.
Inverter Converts Electricity
 AC electricity produced The inverter changes solar electricity into the type of power used by most Australian household appliances.
Home Uses Power First
 Appliances run Your home uses available solar power before buying electricity from the grid.
Excess Energy Is Exported
 Sent to grid If your system produces more electricity than your home is using, the surplus can be exported to the grid.
Credits Are Applied
 Feed-in tariff earned Your electricity retailer may apply a credit to your bill for eligible exported solar energy.
Want to use more of your own solar power? Adding a solar battery allows excess daytime energy to be stored and used later, instead of sending it straight to the grid.
Solar Power, Savings & Batteries

What Happens After Your Solar System Generates Power?

Once your solar panels are producing electricity, your home uses that power first. Any extra energy may be exported to the grid or stored in a battery, depending on your system setup.

Topic What Happens Why It Matters Helpful Next Step
What Happens If You Produce More Power Than You Use?
Excess Solar Energy
If your solar system generates more electricity than your household is using at the time, the extra power can be exported to the grid or stored in a solar battery. 		Exported solar may earn a feed-in tariff credit, but feed-in rates are often lower than the price of buying electricity back later. This is one reason batteries are becoming more popular.
Best Solar Batteries Battery Upgrade
How Does Solar Save Money?
Lower Grid Usage
Solar helps reduce the amount of electricity your home buys from the grid by powering appliances during daylight hours. 		The more solar energy you use directly, the less electricity you need to purchase from your retailer. Batteries can improve savings by storing solar energy for evening use, especially as power prices rise.
Solar Payback Periods Is Solar Still Worth It?
How Does Solar Work With A Battery?
Store & Use Later
A battery stores excess solar energy during the day so it can be used in the evening, overnight, during peak-rate periods or during selected blackout backup situations. 		Solar batteries help increase self-consumption, reduce reliance on the grid, support blackout protection where designed correctly, and may help households prepare for EV charging or future energy needs.
Battery Upgrade Best Battery Size Best Batteries Australia
The key to better solar savings is self-consumption. The more of your own solar energy you use at home, the less you usually need to buy from the grid.
Solar Batteries & Backup Power

What Happens When The Sun Goes Down Or The Power Goes Out?

Two of the most common questions homeowners ask are how solar works at night and what happens during a blackout. While solar panels generate electricity during daylight hours, batteries and backup systems can play an important role when sunlight is no longer available.

How Does Solar Work At Night?

No Sunlight = No Solar Generation
Solar panels do not generate electricity after sunset.
Homes without battery storage typically use electricity from the grid overnight.
Solar batteries can store excess daytime solar energy for use later in the evening and overnight.

This is one of the main reasons solar batteries are becoming increasingly popular. Rather than exporting excess solar energy during the day and buying electricity back later, homeowners can store that energy for use when the sun is no longer shining.

Battery Size Guide Best Solar Batteries

How Does Solar Work During A Blackout?

Not All Solar Systems Provide Backup Power
Standard solar systems automatically shut down during a blackout for safety reasons.
Battery systems with backup functionality may continue powering selected circuits during outages.
Not all batteries provide backup power, and additional hardware may be required.

Backup capability depends on the battery, inverter, switchboard configuration and how the system has been designed. If blackout protection is important, this should be considered when planning your solar and battery installation.

Battery Upgrade Best Battery Size
Important: Many homeowners assume solar panels automatically provide power during a blackout. In reality, most standard solar systems shut down unless a compatible battery backup system has been installed and configured for backup operation.
Solar Benefits

Why Solar Is Such A Strong Investment In Australia

Australia's climate, electricity prices and available incentives make solar one of the most attractive long-term home improvements for many households.

Australian Climate
Australia receives some of the highest levels of solar radiation in the world, allowing solar systems to generate significant amounts of electricity throughout the year.
Excellent
Bill Reduction
Solar allows you to generate your own electricity rather than purchasing all of it from the grid, helping reduce ongoing power bills.
High Impact
Federal Incentives
Government solar incentives help reduce upfront installation costs, making solar more affordable than many homeowners expect.
Available
Battery Storage
Adding battery storage allows excess daytime solar energy to be used later, increasing self-consumption and reducing grid reliance.
Growing Fast
Future Energy Costs
Generating your own energy can help reduce exposure to future electricity price increases and improve long-term energy independence.
Long-Term Value
Bottom line: Solar continues to make sense for many Australian households because it combines strong solar generation conditions, lower electricity bills, government incentives and the ability to add battery storage as energy needs evolve.
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What our customers say

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“The speed that they got a quote to me – and had the system erected – was super-fast. They were straight to the point, legitimate; I could get them on the phone, and not beat around the bush with a salesperson. They were polite and enjoyable to have around. Get Stag to do it – I’d recommend them any day of the week.”

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“The enquiry and quoting process was very easy. We were very happy with [the quote] and accepted it straight away. We’re saving a lot of money with the solar panels. The total experience with Stag was one that left us feeling very good, very satisfied, and we’d be happy to recommend them to anyone – I don’t think you could do any better.”

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Platinum Warranty Package

We pride ourselves on delivering exceptional products and services, which is why we offer our comprehensive 25-year Platinum Warranty. This industry-leading warranty goes above and beyond standard workmanship warranties, covering various components not typically included in manufacturer warranties.

With our Platinum Warranty, you can rest assured that your solar investment is well protected, giving you complete peace of mind as you enjoy the benefits of clean, renewable energy.

Workmanship (lifetime)*
Broken Tiles Repaired/Replaced*
Property Damage*
Wiring & Conduits
AC & DC Isolators
Excessive Broken Tiles*
No Call Out Fees for Warranty Repairs
Express Warranty Claims
Any At-Fault Damage Not Under Warranty
Racking, Railing, Brackets, and Clamps
Electrical Safety Certificate Provided
Warranty Documents Provided
Pre and Post Installation Photos
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Frequently Asked Questions: How Solar Works

Talk to a Verified Installer No pressure! Just expert advice

How Does Solar Power Work?

Solar power works by converting sunlight into electricity. Solar panels generate DC electricity, which is sent to an inverter and converted into AC electricity that can be used by your home.

Do Solar Panels Work At Night?

No. Solar panels do not generate electricity at night because they need sunlight to produce power. At night, your home will usually use grid electricity unless you have a solar battery storing daytime solar energy.

What Happens To Extra Solar Power?

If your solar system produces more electricity than your home is using, the excess power can be exported to the grid or stored in a solar battery if your system includes battery storage.

How Does Solar Save Money?

Solar saves money by reducing the amount of electricity your home needs to buy from the grid. The more solar energy you use directly during the day, the more you can reduce your power bills.

Does Solar Work During A Blackout?

Most standard solar systems shut down during a blackout for safety reasons. If you want backup power, you generally need a compatible battery system with backup functionality designed into the installation.

How Does Solar Work With A Battery?

A solar battery stores excess solar energy generated during the day so it can be used later in the evening, overnight, during peak electricity periods or during selected backup power situations.

Does Solar Work On Cloudy Days?

Yes. Solar panels can still generate electricity on cloudy days, although output is usually lower than on clear, sunny days. Performance depends on weather, shading, panel quality and system design.

Can Solar Eliminate My Electricity Bill?

Solar can significantly reduce electricity bills, but it may not eliminate them completely. Most homes still have fixed daily supply charges and may need some grid electricity, especially at night or during periods of high usage.

Is Solar Worth It In Australia?

For many households, yes. Australia has excellent solar conditions, rising electricity prices and government incentives that can help reduce installation costs, making solar a strong long-term investment for many homes.

How Long Do Solar Panels Last?

Most quality solar panels are designed to last 25 years or more. While output gradually reduces over time, a well-installed solar system can continue producing electricity for decades.

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