Appliances Solar Batteries Run

What can a solar battery run

One common question Australian homeowners ask before installing battery storage is what a solar battery can actually run. The answer depends on several factors: the size of your battery, how much electricity your appliances use, and whether your system is configured to provide backup power during blackouts. A solar battery stores excess energy generated by your solar panels during the day, so you can use it when the sun isn't shining.
This can reduce your reliance on grid electricity and lower power bills. Many people assume a battery can run everything in their home indefinitely, but the reality is more complicated.In this guide, we'll explain what a solar battery can power, how long common household appliances can run, what battery size may suit your home, and the factors that affect battery performance.

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How Does A Solar Battery Power Your Home?

A solar battery stores excess electricity generated by your solar panels during the day. Instead of sending unused solar energy back to the grid, your battery keeps that power available for later use. When solar production drops in the afternoon or stops after sunset, your home can draw on the battery's stored energy before needing electricity from the grid.
The power a battery can provide depends on several factors, including its usable storage capacity (kWh), output rating (kW), household electricity use, time of day, weather conditions, and whether the system has backup power capabilities. Think of a solar battery like a fuel tank for your home. The larger the battery, the more energy it can store and the longer it can power your appliances before recharging.

Most modern solar batteries can power many of the appliances Australian households use every day. Common examples include lighting, refrigerators, freezers, televisions, Wi-Fi routers, computers, phone chargers, kitchen appliances, washing machines, dishwashers, pool pumps, ceiling fans, and reverse-cycle air conditioning systems.

While a battery can power multiple appliances at once, the total runtime depends on the battery's size and the electricity used throughout the home. A significant portion of evening and overnight energy consumption is met by stored solar energy, allowing it to be used when electricity prices are often highest. This helps reduce reliance on grid power while maximising the value of the solar energy your system generates during the day.

Solar Battery Appliance Guide

What Can A Solar Battery Run In Your Home?

A solar battery stores excess solar energy generated during the day and makes it available when your home needs power most. The appliances it can support depend on battery size, output capacity, household usage and whether the system has been configured for backup power.

Common Appliances A Solar Battery Can Run

Most modern solar batteries can power many everyday household appliances. Runtime will vary depending on the appliance, battery size and how much power is being used at the same time.

LED Lighting

Very Low Use

Refrigerator

Essential Appliance

Freezer

Essential Appliance

Television

Low Use

Wi-Fi & Internet

Very Low Use

Washing Machine

Moderate Use

Dishwasher

Moderate–High Use

Pool Pump

Moderate Use

Air Conditioning

High Use

What Affects Battery Runtime?

Battery runtime is not just about storage size. The way your home uses electricity, the number of appliances running and the system design all influence how long stored solar power will last.

Battery Capacity

Usable kWh determines how much energy can be stored and used later.

Battery Output

Output rating affects how many appliances can run at the same time.

Household Consumption

Homes with higher electricity demand will drain stored battery power faster.

Time Of Day

Battery use usually increases in the evening when solar production drops.

Solar Production

Sunny days allow batteries to recharge more effectively during daylight hours.

Backup Configuration

Not all battery systems provide blackout protection unless specifically configured.

Can A Solar Battery Power An Entire Home?

A solar battery can power many household appliances, and in some cases most of the home, but runtime depends on battery size, energy usage and system design. A properly sized battery can comfortably support essential appliances and evening electricity use, while larger battery systems may provide longer runtimes and greater energy independence.

Appliance Usage & Battery Sizing

Appliance Power Usage & Recommended Battery Sizes

Different appliances place very different demands on a solar battery. Lights, Wi-Fi and fridges are usually easy to support, while pool pumps, dishwashers and air conditioning use more stored energy and may need a larger battery system.

Common Appliance Energy Usage

This is a general guide to how much pressure common household appliances can place on stored solar energy. Actual usage varies depending on appliance size, age, settings and runtime.

LED Lights

Very Low

Wi-Fi Router

Very Low

Laptop

Low

Television

Low

Fridge & Freezer

Low–Moderate

Washing Machine

Moderate

Dishwasher

Moderate–High

Pool Pump

Moderate–High

Split System Air Conditioner

High

Recommended Battery Sizes

The right battery size depends on your evening usage, solar system size, backup expectations and whether you want to support heavier appliances.

5kWh

Essentials Only

Best for smaller homes wanting to support lights, fridge, Wi-Fi and small electronics.

10kWh

Average Household Usage

A common option for covering evening use, including refrigeration, lighting, entertainment and kitchen loads.

13.5kWh

Larger Family Homes

Useful for homes with higher evening demand or households wanting to run multiple appliances at once.

20kWh+

High-Energy Homes & EV Owners

Better suited to larger homes, heavier usage, extended backup needs or households planning for EV charging.

What Size Solar Battery Do You Need?

The best battery size is not always the biggest battery. For most households, the right option is the system that matches your evening energy usage, solar production and backup expectations. A properly sized battery can reduce grid reliance, improve solar self-consumption and avoid overspending on unused storage capacity.

Battery Runtime Examples

How Long Can Different Solar Battery Sizes Last?

Solar battery runtime depends on the usable capacity of the battery and how much electricity your household is drawing at the time. A small battery may comfortably support essentials, while a larger battery can run more appliances for longer periods.

Small Battery

5kWh

Essentials For Several Hours

Best for keeping basic low-energy appliances running rather than supporting heavy household loads.

LED lights

Wi-Fi router

Fridge

Phone charging

Common Battery

10kWh

Typical Evening Usage

A popular size for covering everyday evening loads after solar production drops.

Lights and fridge

TV and Wi-Fi

Kitchen appliances

Small air conditioner

Larger Battery

13.5kWh

Evening & Overnight Support

Useful for larger households or homes wanting to run more appliances at once.

Most evening loads

Multiple appliances

Overnight essentials

Backup-ready homes

Large System

20kWh+

Extended Backup & High Usage

Better suited to larger homes, heavier usage, long backup periods or future EV charging needs.

High-energy homes

Extended backup

Air conditioning support

EV planning

Why Runtime Can Vary So Much

A battery will last much longer running low-energy essentials than it will running high-demand appliances. For example, lights, Wi-Fi and refrigeration may use stored energy slowly, while air conditioning, pool pumps and EV charging can drain a battery much faster.

Runtime Estimates Are A Guide Only

Actual battery runtime depends on appliance efficiency, household behaviour, weather, solar production and system design. For the best result, your battery should be sized around your real evening usage, not just the headline battery capacity.

Daily Usage & Backup Power

A Typical Day Using Solar Battery Storage & Backup Power

Solar battery storage is most useful when it matches the natural rhythm of your home. During the day, solar panels can power appliances and charge the battery. In the evening, stored solar energy can help reduce grid reliance when electricity usage is often higher.

Typical Solar Battery Usage Timeline

This example shows how a household may use solar, battery storage and grid electricity across a normal day. Actual usage depends on system size, weather, appliance demand and battery capacity.

7am

Solar + Grid

Early morning demand may use a mix of leftover battery power, new solar generation and grid electricity.

10am

Solar Power

Solar production usually increases through the morning and may cover many daytime loads.

12pm

Solar + Battery Charging

Excess solar energy can begin charging the battery once household demand is covered.

2pm

Solar + Battery Charging

Strong afternoon solar production can continue charging the battery for evening use.

6pm

Battery Power

As solar generation drops, the home can begin drawing on stored battery energy.

9pm

Battery Power

Evening appliances, lighting, entertainment and refrigeration may be powered by stored solar energy.

12am

Battery Power

Overnight essentials may continue using battery storage depending on remaining charge.

3am

Grid Power

If the battery has discharged, the home may return to grid electricity until solar production resumes.

Blackout Backup Priorities

Not every appliance needs to be backed up during an outage. Many battery systems are designed to support essential circuits first, with heavier loads only included where the battery and inverter capacity allow.

Essential

Fridge & Freezer

Usually one of the first priorities for backup power during an outage.

Essential

Lighting

Low-energy lighting can be suitable for backup circuits.

Essential

Internet

Wi-Fi and modem equipment generally require minimal power.

Essential

Medical Equipment

Critical medical devices should be discussed during system design.

Optional

Television

Entertainment loads may be included if backup capacity allows.

Optional

Pool Pump

Often lower priority during outages because it can consume more stored energy.

High Load

Air Conditioning

Backup depends heavily on battery size, inverter output and system configuration.

High Load

EV Charging

Usually requires a larger system and careful design if backup support is required.

Backup Power Needs To Be Designed Properly

Not all solar batteries automatically provide blackout protection. Backup power usually needs to be included in the system design, with selected circuits configured for essential loads. A properly designed setup can keep important appliances running, while larger battery systems may support more household loads for longer periods.

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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.

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Broken Tiles Repaired/Replaced*

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Wiring & Conduits

AC & DC Isolators

Excessive Broken Tiles*

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Express Warranty Claims

Any At-Fault Damage Not Under Warranty

Racking, Railing, Brackets, and Clamps

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Frequently Asked Questions: What Solar Batteries Run

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What Can A Solar Battery Run?

A solar battery can run many everyday household appliances, including lights, fridges, freezers, Wi-Fi routers, televisions, computers, washing machines, dishwashers, pool pumps and some air conditioning systems. What it can run depends on battery size, output capacity and household energy usage.

Can A Solar Battery Power A Whole House?

In some cases, yes. A larger solar battery system may be able to power most of a home for a period of time, but runtime depends on how much electricity the household is using. High-demand appliances such as air conditioning, electric hot water and EV charging will drain a battery faster.

Can A Solar Battery Run Air Conditioning?

Yes, many solar batteries can run air conditioning, especially smaller split system units. However, air conditioners use a lot of electricity, so runtime depends heavily on battery capacity, inverter output, temperature, home insulation and what other appliances are running at the same time.

What Can A 10kWh Solar Battery Run?

A 10kWh solar battery can usually support common evening household loads such as lights, refrigeration, Wi-Fi, television, computers, kitchen appliances and sometimes a small air conditioner. Actual runtime depends on appliance usage and how much usable battery capacity is available.

How Long Will A Solar Battery Last At Night?

A solar battery may last several hours or through much of the night depending on its size and your household electricity usage. Low-energy essentials will use stored power slowly, while appliances like air conditioning, pool pumps and dishwashers will drain the battery faster.

What Size Solar Battery Do I Need?

The right battery size depends on your evening energy use, solar system size, appliance demand, budget and backup power goals. Many Australian homes choose batteries between 10kWh and 15kWh, while larger or high-energy households may need 20kWh or more.

Can A Solar Battery Run A Fridge?

Yes. A fridge is one of the most common appliances powered by a solar battery. Modern refrigerators usually have relatively low ongoing energy demand, making them well suited to battery storage and blackout backup circuits.

Can A Solar Battery Run A Pool Pump?

Yes, a solar battery can run a pool pump, but pool pumps can use a moderate to high amount of electricity depending on their size and runtime. Many households prefer to run pool pumps during the day when solar production is strongest.

Will A Solar Battery Work During A Blackout?

Not always. A solar battery only provides blackout protection if the system has been designed and configured for backup power. Some systems can support selected essential circuits, while others may shut down during a grid outage unless backup hardware has been included.

What Appliances Should Be Backed Up During An Outage?

Common backup priorities include fridges, freezers, lighting, Wi-Fi, medical equipment and essential power points. High-demand appliances such as air conditioning, pool pumps, electric hot water and EV chargers usually require larger systems and careful design.

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