48 Hours Without Power: Is Your Victorian Home Really Prepared?
Have you actually thought about it?
Imagine this.
It is a hot summer afternoon in Victoria.
Your phone is sitting at 12%. The fridge is full. The kids are home from school. Your Wi-Fi has just stopped working. The air conditioner is off, the lights are gone and your electric cooktop will not turn on.
You check your phone.
The power outage is expected to last another 48 hours.
Suddenly, something most families barely think about becomes a serious question:
How would your household cope without electricity for two full days?
For many Victorian households, a short blackout is an inconvenience. But a prolonged outage can affect almost every part of daily life refrigeration, heating and cooling, cooking, communications, internet access, lighting and the ability to charge essential devices.
The good news is that preparing for a power outage does not necessarily mean living off-grid.
For homeowners considering solar battery Victoria solutions, a properly designed solar and battery system with backup functionality can provide an additional layer of household energy resilience.
But there is one important point to understand first:
Having solar panels or a battery does not automatically mean your home will have power during a blackout.
Let’s look at what could happen during a 48-hour outage and what Victorian homeowners can do before the lights go out.
What Would 48 Hours Without Power Actually Look Like?
A two-hour blackout can be annoying.
A 48-hour blackout is different.
Think about everything in your home that relies on electricity.
After the first few hours
You may notice:
- Your refrigerator and freezer are no longer actively cooling.
- Wi-Fi and internet equipment stop operating.
- Phones and laptops begin losing charge.
- Lights become dependent on torches or battery-powered alternatives.
- Air conditioning or electric heating stops.
- Electric hot water may no longer be available.
- Electric cooking appliances cannot be used.
- Home security and smart-home equipment may be affected.
The longer the outage continues, the more these small inconveniences begin to compound.
By the second day, the question is no longer simply:
“When will the power come back?”
It becomes:
“How are we going to manage the rest of today?”
Solar Victoria notes that Victorian power outages can occur for various reasons, including severe weather, fallen trees, vehicle accidents, technical faults, maintenance and other network issues.
That does not mean every Victorian household should expect a 48-hour outage.
It means having a plan can make an unexpected outage considerably easier to manage.
Your Fridge Could Become One of the Biggest Concerns
Most families do not think twice about refrigeration because it normally works continuously.
During a prolonged outage, however, keeping food cold becomes important.
A refrigerator needs electricity to maintain its normal operating temperature. A freezer also needs ongoing power to keep food frozen.
If your home has backup electricity available, refrigeration is usually one of the first loads many households would want to prioritise.
This is one reason home battery storage is not simply about reducing electricity bills.
It can also be about keeping essential household loads operating when the grid is unavailable.
Of course, exactly what a battery can run depends on the battery, inverter, backup configuration, available capacity and the circuits connected to the backup supply.
What About Heating and Cooling?
This is where a Victorian blackout can become particularly uncomfortable.
During summer, your family may rely heavily on air conditioning.
During colder periods, electric heating may be essential for comfort.
If your heating or cooling system stops operating, indoor temperatures can become difficult to manage.
But there is an important trade-off.
High-power appliances can consume a substantial amount of electricity.
Running an entire home exactly as normal during a long outage can drain a battery much faster than running essential loads.
That is why a good solar battery backup system should be designed around how your family actually uses electricity.
Before choosing a battery, ask:
What do we actually need to keep running during an outage?
For one household, that may be:
- Refrigerator
- Freezer
- Lights
- Wi-Fi
- Phones
- Security system
- Selected power points
For another family, it may include additional heating, cooling or other essential equipment.
The answer is different for every home.
“But I Already Have Solar Panels. Won’t They Work?”
This is one of the most common misconceptions about residential solar.
If you already have rooftop solar, you might assume that the sun will continue powering your home when the grid goes down.
In many standard grid-connected solar systems, that is not how it works.
Grid-connected solar systems are generally designed to shut down when the electricity network fails. This is an important safety function intended to prevent electricity being fed into network lines while workers may be repairing them.
So if you’re searching for:
“Will solar panels work during a blackout in Victoria?”
The answer is:
Not necessarily.
Your system needs to be specifically designed with appropriate backup functionality.
That distinction is extremely important when comparing solar panels vs solar battery backup.
A Solar Battery Is Not Automatically Backup Power
Adding a battery to your solar system can allow excess solar energy to be stored and used later.
But that does not automatically mean the battery will operate your home during a blackout.
The Australian Government explains that a battery can provide backup electricity during an outage if it is configured to do so, and not every battery system has this capability.
Solar Victoria makes the same distinction: some solar and battery systems can isolate from the grid and continue supplying energy, while standard systems may switch off during an outage.
This is why the right question isn’t simply:
“Does this battery have 10 kWh?”
Ask:
“How will this system behave when the grid goes down?”
What Happens When a Battery Backup System Detects a Blackout?
A suitably designed backup system can isolate the home from the electricity grid and supply electricity to the designated backup loads.
This is commonly associated with islanding or backup operation.
The exact process depends on the system design.
In a simplified example:
Grid operating normally
Solar panels → Home → Excess solar → Battery
Then the grid fails:
Grid outage
Solar/Battery → Backup system → Essential household loads
Some systems may support selected circuits, while others can be designed for broader household backup depending on the equipment and electrical configuration.
The Australian Government notes that backup systems may supply the whole property, selected essential circuits or, in some circumstances, particular phases of a three-phase property.
That means battery size is only one part of the equation.
How Long Can a Solar Battery Run a House During a Blackout?
This is one of the biggest questions homeowners ask.
And unfortunately, there isn’t one universal answer.
A battery’s backup duration depends on several factors, including:
- Battery capacity
- Battery power output
- Household electricity consumption
- Which appliances are operating
- Solar generation during the outage
- Weather conditions
- Backup configuration
- Whether the system supplies essential circuits or the wider home
For example, a family that only runs the refrigerator, lights, Wi-Fi and phone chargers may use considerably less electricity than a household running multiple air conditioners, an electric hot water system, cooking appliances and other high-demand equipment.
Solar Victoria similarly notes that backup duration depends on the size of the solar system, household consumption and the appliances being powered.
So instead of asking:
“How many hours will my battery last?”
A better question is:
“How much electricity does my family actually need during an outage?”
Could Solar Help During a 48-Hour Outage?
Yes, if the system is designed appropriately.
This is where the combination of solar + battery storage + backup functionality becomes particularly interesting.
During daylight hours, solar panels can generate electricity.
Some of that electricity can power your home.
Excess energy can be used to recharge the battery, depending on the system design and available solar generation.
That means an appropriately designed islandable solar-and-battery system may have the potential to provide energy over a longer outage than a battery operating alone, particularly when electricity consumption is carefully managed. The Australian Government specifically notes that islandable solar-and-battery systems may provide electricity over multiple days when usage is carefully managed.
But weather matters.
A sunny day and a cloudy day will not provide the same amount of solar generation.
And a 48-hour backup strategy should never assume that solar production will remain constant.
What Should You Keep Running During a Long Blackout?
If your goal is energy resilience, think in terms of essential loads.
A practical priority list could include:
Priority 1: Essential household equipment
- Refrigerator
- Freezer
- Basic lighting
- Phone charging
- Internet modem/router
- Security equipment
Priority 2: Comfort
- Selected fans
- Heating or cooling where the system allows it
- Television or entertainment
- Additional lighting
Priority 3: High-energy appliances
- Electric hot water
- Ovens
- Induction cooktops
- Large air conditioners
- Pool pumps
- EV chargers
The final category can use considerably more energy, so whether they can or should operate during a prolonged outage depends on the system’s capacity and configuration.
This is why battery sizing for your home should start with your actual electricity usage rather than simply choosing the biggest battery available.
What Battery Options Are Available for Victorian Homes?RevoluSun Power currently promotes a range of residential battery solutions designed for different household requirements.
For example, its GoodWe ESA Series is positioned as an all-in-one solar battery solution with backup functionality and scalable storage options.
The SolarEdge Home Battery offered by RevoluSun Power is designed to store excess solar energy and provide backup when paired with the appropriate Backup Interface.
RevoluSun Power also offers PotisEdge Battery systems, with modular capacity options and automatic backup switching according to the product information.
These examples highlight an important point:
There is no one-size-fits-all battery for every Victorian household.
Your existing solar system, inverter, switchboard, energy consumption, property configuration and backup requirements all matter.
What Should a Victorian Family Ask Before Buying a Battery?
Before signing a solar battery quote, ask these questions.
Will the battery provide backup power during a blackout?
Do not assume the answer is yes.
Ask specifically about outage operation.
Which appliances will stay powered?
Will the system power the entire house or only selected circuits?
How long can the battery realistically operate our essential loads?
Ask the installer to model your actual household consumption.
Can solar recharge the battery during a blackout?
This depends on the system architecture and backup configuration.
What happens when the battery reaches its minimum state of charge?
Understanding this is particularly important during a long outage.
Is the system expandable?
Your electricity requirements could change if you add an EV, heat-pump hot water, electric heating or other appliances.
Solar Victoria recommends considering future energy needs when planning a battery system.
What backup equipment is required?
Depending on the system, additional equipment or electrical work may be required to enable backup functionality.
Don’t Forget About Your Switchboard
A battery installation is not just about putting a battery on the wall.
Your home’s electrical infrastructure matters too.
The installer may need to consider:
- Switchboard configuration
- Existing solar inverter
- Backup circuits
- Single-phase or three-phase supply
- Cable requirements
- Electrical protection
- Battery location
- Future electrical loads
This is another reason professional system design matters.
A battery that looks perfect on a product specification sheet may not be the right configuration for your particular property.
What If You Don’t Have a Battery Yet?
You can still prepare for a blackout.
Solar Victoria recommends practical measures such as keeping power banks charged, having torches available, unplugging appliances during an outage and taking care when electricity is restored.
You can also create a simple family blackout kit containing:
- Rechargeable torches
- Power banks
- Spare batteries
- Portable radio
- Drinking water
- Basic non-perishable food
- Essential medications
- Important contact information
- Phone charging cables
But if your household depends heavily on electricity, it may also be worth investigating whether battery backup for your home makes sense.
What Would Your Family Do at Hour 6, Hour 24 and Hour 48?
This is perhaps the easiest way to think about energy resilience.
Hour 6
You can probably manage.
The fridge is still a concern, but most family routines can be adjusted.
Hour 24
The inconvenience becomes much more noticeable.
You are thinking about refrigeration, hot water, cooking, heating or cooling, internet access and phone charging.
Hour 48
Now you’re managing your home’s electricity rather than simply waiting for the power to return.
Every appliance matters.
Every battery percentage matters.
Every available source of electricity matters.
And this is exactly why energy resilience is worth considering before an outage happens.
Solar + Battery Isn’t Just About Blackouts
There is another reason Victorian homeowners are considering battery storage.
It can also help households use more of their own solar energy.
During the day, your solar panels may generate more electricity than your home immediately needs.
A battery can store some of that surplus energy for later use.
When solar production falls in the evening, stored energy can then be used instead of immediately relying on electricity from the grid.
The Australian Government describes this as one of the key functions of home batteries, alongside potential backup during outages.
So your battery can have two jobs:
Everyday:
Store solar → use it later → reduce grid reliance.
During a compatible outage:
Store energy → provide backup → keep selected household loads operating.
That combination is what makes a properly designed home energy storage system different from a simple emergency generator or portable power bank.
Is a 48-Hour Backup System Right for Your Home?
That depends on your family.
If everyone in your household works away from home and you rarely experience outages, your priorities may be different.
If you work from home, have young children, depend on refrigeration, use electric heating and cooling, or simply want greater energy resilience, backup functionality may be more important.
And if your home is moving towards full electrification, planning ahead becomes even more relevant.
The important thing is not to buy a battery simply because it has a large capacity.
Buy a system based on:
The Best Time to Think About a Blackout Is Before It Happens
Nobody knows exactly when their next major power outage will happen.
You may never experience a 48-hour blackout.
But if it did happen tomorrow, would your family know what to do?
Would the fridge stay cold?
Could everyone charge their phones?
Would your internet work?
Could you keep essential lights running?
Would your heating or cooling be available?
And most importantly:
Would your solar system actually work when the grid went down?
That last question is worth asking your solar installer.
For Victorian homeowners considering solar battery backup, RevoluSun Power provides residential solar and battery solutions designed around household energy requirements, including battery options from brands such as GoodWe, SolarEdge and PotisEdge.
A properly designed system can help you make better use of your solar energy every day while potentially providing backup power when the grid is unavailable.
Because energy independence isn’t necessarily about disconnecting from the grid.
Sometimes, it is simply about being better prepared when the grid isn’t there.
Ready to find out what your home would need during a blackout? Talk to RevoluSun Power about a solar and battery solution designed around your household’s energy use and backup requirements.
Frequently Asked Questions
1What happens if the power goes out for 48 hours in Victoria
A prolonged outage can affect refrigeration, lighting, heating and cooling, electric cooking, hot water, internet access, phone charging and other household services. Victorian households can prepare with emergency supplies and, where appropriate, a solar battery system designed with backup functionality.
Will solar panels work during a blackout in Victoria?
Not necessarily. Standard grid-connected solar systems are generally designed to shut down during a grid outage for safety reasons. A specially designed solar and battery system with appropriate backup functionality can isolate from the grid and continue supplying electricity to designated loads.
Can a solar battery power my house during a blackout?
Yes, some battery systems can provide backup power, but not every battery installation does. The battery, inverter, backup equipment and overall electrical design need to support backup operation.
How long will a home battery last during a power outage?
There is no fixed number of hours. Backup duration depends on usable battery capacity, household electricity consumption, solar generation, weather conditions, inverter capacity and which appliances are being powered. Reducing unnecessary electricity use can extend available backup time.
Can solar recharge a battery during a 48-hour blackout?
Some islandable solar-and-battery systems can continue using solar generation during an outage and recharge the battery when solar production is available. The exact capability depends on the system’s design, inverter and backup configuration.
What appliances should I run during a long power outage?
Most households would prioritise essential loads such as refrigeration, lighting, communications and selected power points. High-energy appliances such as large air conditioners, electric hot water systems, ovens, pool pumps and EV chargers can use substantially more energy and should be considered based on the battery and backup system’s capacity.
How much battery storage does a Victorian home need?
There is no universal battery size. The appropriate capacity depends on your solar system, electricity consumption, evening usage, desired backup duration and the appliances you want to operate during an outage. Solar Victoria recommends considering current and future energy requirements when planning a battery.
Is a solar battery worth it for blackout protection in Victoria?
It depends on your household’s needs and budget. A battery can store excess solar energy for later use and, when configured appropriately, provide backup during an outage. It can therefore serve both everyday energy-management and resilience purposes, but the financial and practical value varies between households.
