Solar storage batteries offer a solution to harness and preserve surplus energy generated by your solar power system, as opposed to exporting it to the grid at a lower value.

When you integrate a solar power system, the energy distribution within your household is overseen by your solar inverter. The primary objective of the inverter is to minimise your reliance on the grid, consequently reducing your electricity expenses.

Our solar battery storage range
SolarEdge Battery


Adding solar storage batteries to your home not only boosts your energy independence but also acts as a crucial safety net during power outages. These advanced battery systems serve as a reliable backup power source, ensuring that your essential appliances continue running.

During unexpected power disruptions, solar storage batteries seamlessly step in, providing immediate electricity for your crucial appliances. This ensures continuous comfort, allowing you to keep lights on, refrigerators running, and essential devices operational.


Storing surplus energy generated on sunny days and utilising it during periods of low solar production or at night not only enhances your energy self-sufficiency but also reduces your reliance on the grid.

This reduction in dependence on the grid is a direct pathway to lower electricity expenses, leading to significant cost savings over time. By leveraging stored energy intelligently, you gain greater control over your power consumption, ultimately contributing to a more sustainable and economical energy lifestyle.


When you invest in solar panels, you’re making a commitment to a cleaner, more sustainable future.

However, without the right strategy, a significant portion of the energy your panels generate goes to waste.

Solar storage batteries offer a brilliant solution. Instead of exporting surplus energy back to the grid at a lower value, you can store it for your own use, even when the sun isn’t shining.

Battery Size Calculator
Solar Install
Energy Security


Solar storage batteries allow you to maximize your self-consumption of the energy you generate.

Rather than selling excess power to the grid at a lower rate, you use it to power your home, making the most of your solar investment.


Harnessing stored energy from your solar batteries translates to a reduction in carbon emissions from conventional grid sources. By relying less on traditional power generation, you actively contribute to a cleaner environment and foster a more sustainable future for Sydney.

This commitment to cleaner energy practices not only benefits your immediate surroundings but also plays a part in building a greener and healthier planet for generations to come.


For electric vehicle owners, solar storage batteries represent a game-changing solution. With this technology, you can charge your EV using clean, renewable energy directly from your own system.

This not only reduces your carbon footprint but also cuts down on fuel costs, making the transition to sustainable transportation both environmentally friendly and economically advantageous. 

Embracing solar storage for your electric vehicle charging needs is a significant step towards a more eco-conscious and cost-effective lifestyle.

Our EV Charging range
ev charging


Will I be affected by power outages in my area if I have solar power?

It’s important to know that not every solar system is equipped with blackout protection. A typical solar setup alone won’t keep your lights on during power outages. By integrating a battery storage system with your residential solar installation, you can maintain power even when the grid fails.

A grid-connected solar system is connected to your power provider’s network, so when there’s a disruption, like a brownout or a drop in voltage, your panels may continue to generate energy. However, your inverter is designed to disconnect from the grid in such events for safety reasons, leading to a loss of electricity in your home like any other grid-dependent household.

This disconnection generally means that your solar installation is not operational during blackouts. It might seem counterintuitive. However, modern solutions are available to keep your grid dependent systems running when there’s a complete loss of power. By integrating a battery backup, you can ensure a continuous electric power supply, even when there’s a grid failure; effectively safeguarding your home from voltage reductions and power blackouts.

Power backup response times can vary, from immediate response (like a UPS system) to various delays (like an EPS system). If you’re looking for a solution that provides blackout protection, it’s best to discuss your options with your solar installer. They might suggest system upgrades or even a full replacement.

This hybrid approach of grid-connected solar and battery backup allows you to contribute to the electricity demand of the grid when your production exceeds your consumption, yet still provides a safety net during power blackouts.

If you have an off-grid solar power system, you are effectively the master of your own electrical system, significantly reducing the risk of being impacted by power blackouts; immune to the common vulnerabilities of the electrical grid. Off-grid systems are designed to be resilient against complete loss of power, ensuring that power lines and grid instabilities don’t affect your own generated power supplies.

It’s crucial to maintain your off-grid system properly; a drop in voltage or a depleted battery can lead to a power outage in your home. That’s where a backup generator becomes an essential part of your off-grid electrical system. With a reliable backup generator in place, even if your solar batteries run low, you can swiftly recover without being left in the dark.

If blackout protection wasn’t on your list of requirements, your current setup might not include this feature. In the event of a blackout where your battery fails to kick in, it’s worth evaluating how often and how long blackouts occur in your region before deciding on an upgrade.

To sum up, whether you wish to live off-grid or stay connected while enjoying a measure of independence, solar power offers a robust solution to keep your lights on, even when the grid is off.

What size solar battery should I get

Solar batteries play a crucial role in storing excess solar energy for later use, enabling homeowners to power their residences with renewable energy, especially during nighttime. Here’s an explanation of solar battery sizing to help you determine the right size for your needs:

Rough Calculation of solar needs:

Generally speaking, a 10-13 kWh solar battery is typically sufficient to power an average family home at night, assuming adequate solar panel capacity and daytime energy production.

Individual Calculations:

For a more in-depth and personalised answer, refer to your previous energy bills to understand your daily energy habits. For example, if your home uses 30kWh daily, you would require approximately 15kWh of solar battery storage.

How to account for special considerations:

Solar battery sizing depends on household consumption patterns, solar system capacity, available roof space, and future considerations like electric vehicle (EV) charging needs. If you are looking for solar, we will consult with you about your energy demands and future energy plans and help you decide on the size of your system.

Electricity Usage Patterns:

Daylight hours typically account for 30% to 60% of household electricity usage, depending on occupants’ presence and activities. Solar panels contribute to daytime electricity needs, while batteries store excess energy for nighttime consumption, ensuring 24/7 availability of renewable electricity.

Planning on getting an Electric Vehicle (EV):

EV charging adds to household electricity consumption, necessitating larger solar systems and batteries to meet increased energy demands. Solar battery size may need to be doubled or even tripled to accommodate EV charging requirements, emphasising the importance of thorough planning and sizing. Looking into the future and understanding what else you might need to get, and account for that in your energy usage.\

Solar System Sizing:

Solar system size should align with household electricity consumption, and EV charging needs to ensure adequate energy generation and storage capacity. You can use online calculators or consult with us at Soltek to determine the optimal solar system size based on location-specific sunlight intensity and energy requirements.

Location-Specific Considerations:

Solar system output varies based on geographical location, with regions experiencing higher sunlight intensity generating more electricity per kW of installed capacity. Consider location-specific factors when sizing solar systems and batteries to ensure sufficient energy generation and storage capabilities.

Determining the ideal solar battery size involves assessing household electricity consumption, accounting for future EV charging needs, and considering location-specific sunlight intensity. By analysing these factors and consulting with us at Soltek, we can help you select the most suitable solar battery size to meet your energy requirements effectively.

What are the benefits of adding a solar battery?

A house with solar panels and batteries can use the sun’s energy to charge an electric car at night. This means the solar system collects energy from the sun during the day, which is then stored in the battery. The stored energy can charge an electric vehicle overnight, eliminating the need for grid electricity. On par with this, a solar battery has numerous other benefits, including

Energy Independence:

Initiating the path to energy autonomy is a primary driver for why many homeowners integrate a solar battery into their solar system. Solar batteries empower homeowners to utilise sunlight beyond daylight, ensuring a dependable backup during power outages and unpredictable weather conditions.

Navigating Fluctuating Electric Bills:

In the world of rising electric bills, a solar battery helps eliminate the uncertainty of energy bills by reducing them and, in some cases, removing the need to pay them. Solar batteries offer a strategic remedy by optimising energy consumption for cost efficiency. This section delves into how solar batteries facilitate strategic charging and discharging, enabling homeowners to manage peak demand hours and contribute to long-term financial benefits.

Return on Investment (ROI) that Speaks Volumes:

The financial aspect of adding a battery to your solar system is a key consideration. This section illuminates the smart energy practices contributing to a noteworthy investment return. Balancing sustainability and financial gain, solar batteries become a financial asset and a conscious choice for environmentally responsible living.

Low Maintenance, High Efficiency:

The operational efficiency and maintenance requirements of solar batteries set them apart from traditional generators. This section highlights the quiet, self-replenishing nature of solar batteries, their minimal maintenance needs, and the efficiency and ease of operation they bring to homeowners.

Environmental Impact:

A critical aspect of the solar journey is understanding the environmental impact. This section underscores how integrating a battery into your solar system goes beyond personal benefits, actively contributing to reducing carbon footprints and fostering a greener planet through cleaner energy consumption.

Future-Proofing Your Energy Ecosystem:

As technology evolves, future-proofing your energy ecosystem becomes crucial. This section explores how having a battery in your solar system positions you to adapt to technological advancements and changing energy needs, ensuring long-term efficiency, savings, and security.

Value Enhancement:

The tangible impact of a battery on your property’s value is explored in this section. Solar batteries increase property value by aligning with modern living trends and offering enhanced energy efficiency. This section sheds light on how solar-equipped homes become marketable assets in the real estate landscape.

As you embark on the journey of contemplating the addition of a battery to your solar system, this comprehensive guide aims to be your beacon of information. Solar batteries are not merely technological additions; they represent a conscious choice toward energy independence, financial savings, and environmental stewardship.


10 kWh

SolarEdge Home Battery
SolarEdge Battery
  • Nominal capacity / Usable capacity 11 kWh / 10kWh
  • 10 years unlimited cycles
  • Available on finance
Get a free quote


Sonnen Batterie Evo
Sonnen battery
  • Nominal capacity / Usable capacity 11 kWh / 10kWh
  • 10 years or 10,000 cycles
  • Available on finance
Get a free quote

13.5 kWh

Tesla Powerwall
Tesla Battery
  • Nominal capacity / Usable capacity 11 kWh / 10kWh
  • 10 years unlimited cycles
  • Available on finance
Get a free quote
*Pricing may vary based on factors such as installation complexity, equipment specifications, and other project-specific requirements. Please consult with our team for a personalized quote tailored to your unique needs and circumstances.

Free Solar & Battery E-Book

10 Top Tips to get a great solar & battery solution

This detailed guide has been prepare using our over 15 years of industry experience. It gives you a great overviews of the key factors to consider in your purchasing decision.

Download your free 20 page E-Book with 10 of the best helpful solar purchasing hints. No Catch. Why? Because solar is a long term investment and we care about what we do and by providing important information to everyone that they can make the best solar & battery choice!