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- Australia-Wide Installations
- Regional Australia Specialists
- On-Grid, Off-Grid & Hybrid Systems
- NETCC-Aligned Install Standards
Smarter Energy Starts with Battery Storage
Electricity prices are rising while feed-in tariffs are falling, reducing the value of exporting solar to the grid. Evening peak rates are also increasing when most households use the most power.
A home battery lets you store excess solar during the day and use it at night instead of buying expensive electricity. This boosts self-consumption, reduces grid reliance, and helps protect against rising energy costs.
It also provides backup power during outages and grid instability, giving homeowners greater energy security and control over future bills.
See what our customers say
Nexa Solar designs systems for households and property owners who need more than a standard solar setup. From family homes to acreage and regional properties, we create practical systems that are designed around real usage, not generic package sizing.
Nexa were more expensive but they came out and explained the process, installed the system with 2 weeks with no fuss and we are very happy with the result and constant communication.
Arise did not provide the same service and in fact they were the opposite promised everything and delivered nothing. A very stressful experience.
For peace of mind in regional Queensland try Nexa Solar.
We recommend them.
Day one produced over 60 kwh
Custom Battery Pricing, Not One-Size-Fits-All
Every home has a different energy profile, so battery systems should never be one-size-fits-all.
The right system depends on your solar size, daily and overnight usage, number of phases, backup needs, EV charging, on-grid or off-grid goals, and local export limits.
At Nexa Solar, we design custom battery solutions based on how your home actually uses energy—never oversizing or undersizing for the sake of a sale.
“Our goal is to recommend the right system, not the most expensive system.”
Our Step-by-Step Battery Design Process
We start by examining your recent electricity bills and assessing your existing solar system. This helps us understand your current energy usage patterns, system performance, and potential opportunities for improvement.
We break down how and when you use power across the day. This allows us to identify how much energy your solar system is directly supplying versus what you’re drawing from the grid at night.
We discuss your goals, whether it’s backup power during outages, reducing grid reliance, or preparing for future energy needs such as EV charging or home expansions.
Based on your usage and goals, we design a tailored battery storage and inverter system that maximises efficiency, savings, and energy independence. Every system is sized and configured for your specific home or business.
Our qualified team handles the full installation, system configuration, and testing. We also provide ongoing support to ensure your system continues performing at its best.
EASY BATTERY UPGRADES FOR YOUR EXISTING SOLAR SETUP
Nexa Solar can integrate battery solutions with your existing solar system where suitable. In many cases, we can upgrade or expand your current setup without requiring a complete replacement, making the switch to battery storage more cost-effective and seamless.
UNDERSTANDING BATTERY SYSTEM TYPES
On-Grid Battery Systems
On-grid battery systems are connected to the electricity grid and are designed to store excess solar energy for later use.
Who it suits:
Homeowners with existing solar systems who want to reduce energy bills without going fully independent from the grid.
Main benefits:
- Reduces reliance on the grid during peak times
- Helps lower electricity costs through energy storage
- Can take advantage of time-of-use tariffs
Common use cases:
- Storing daytime solar energy for evening use
- Reducing peak-hour electricity charges
Works with existing solar?
Yes. On-grid batteries are commonly added to existing solar systems.
Hybrid Solar & Battery Systems
Hybrid systems combine solar panels, a battery, and a hybrid inverter that manages both solar generation and storage in one integrated system.
Who it suits:
Homeowners installing a new solar system or upgrading an older system for better efficiency and control.
Main benefits:
- Integrated energy management in one system
- Improved efficiency between solar, battery, and grid
- Easier monitoring and control of energy usage
Common use cases:
- New solar + battery installations
- Upgrading older solar systems to modern hybrid technology
Works with existing solar?
Sometimes. Compatibility depends on your current inverter and system setup.
Off-Grid Battery Systems
Off-grid systems operate independently of the electricity grid, relying entirely on solar panels and battery storage.
Who it suits:
Properties in remote locations or users wanting full energy independence.
Main benefits:
- Complete independence from the electricity grid
- No exposure to grid outages or electricity price changes
- Designed for self-sufficient energy supply
Common use cases:
- Rural or remote homes
- Farms, cabins, and off-grid properties
Works with existing solar?
Yes, but usually requires a complete system design and may involve upgrading components.
Whole Home Backup Systems
Whole home backup systems are designed to keep essential or entire household circuits powered during a blackout.
Who it suits:
Homeowners looking for reliable backup power during outages.
Main benefits:
- Keeps critical appliances running during blackouts
- Can be configured for partial or full home backup
- Seamless automatic switchover when the grid fails
Common use cases:
- Power outages and grid instability
- Protecting appliances like fridges, Wi-Fi, and medical devices
Works with existing solar?
Yes. Many backup systems can be integrated with existing solar and battery setups, depending on compatibility.
NEXA SOLAR SOLAR BATTERY INSTALLATIONS
Local installs. Real results. Energy independence for regional Australia.
GOLD COAST
13.3kW Solar + 20kWh Battery System
- Solar System Size: 13.3kW
- Battery: Sungrow SBR 20kWh
- Inverter: Sungrow Hybrid Inverter
OUTCOME ACHIEVE
Designed to reduce peak evening consumption and provide backup protection during outages. The system now powers the home day and night with minimal grid reliance.
EMERALD
10.6kW Solar + 15kWh Battery System
- Solar System Size: 10.36kW
- Battery: BYD Battery-Box Premium 15kWh
- Inverter:Fronius Symo Hybrid Inverter
OUTCOME ACHIEVE
This system was designed to maximise solar self-consumption and provide reliable backup during storms. The battery stores excess daytime energy for use in the evenings.
DUBBO
6.66kW Solar + 10kWh Battery System
- Solar System Size: 6.66kW
- Battery: Tesla Powerwall 2 (13.5kWh)
- Inverter:Tesla Hybrid Inverter
OUTCOME ACHIEVE
Compact system tailored to reduce high evening usage and provide essential backup. The Powerwall ensures peace of mind during power interruptions.
TAMWORTH
15kW Solar + 30kWh Battery System
- Solar System Size: 15kW
- Battery: Sungrow SBR 30kWh (2 x 15kWh)
- Inverter:Sungrow 15kWh Hybrid Inverter
OUTCOME ACHIEVE
Built for energy independence on a larger rural property. The system handles high daytime loads and delivers continuous backup for the whole home.
TRUSTED TECHNOLOGY PARTNERS
Battery Brands & Technology
Why We Recommend These Brands
Known for reliable hybrid inverters and battery systems with strong performance, smart monitoring, and excellent value.
Well-regarded for efficient hybrid technology, flexible system integration, and dependable residential energy storage solutions.
Offers integrated battery storage systems designed for energy independence, backup capability, and smart home energy management.
Next-generation modular battery and inverter systems featuring AI-driven energy management and scalable storage options.
We partner with manufacturers that have proven performance, strong warranty support, and reliable long-term operation in Australian conditions.
Our recommendations are based on:
- System compatibility
- Product reliability
- Performance and efficiency
- Warranty strength
- Local support availability
We do not recommend products based on whichever brand has the highest margin. Our priority is delivering the right solution for your property and energy goals.
Understanding Solar & Battery Systems
Practical Advice to Help You Make Smarter Energy Decisions
We believe homeowners should understand how solar batteries and energy systems actually work before making a decision. That’s why we focus on clear, practical advice. Not sales pressure.
Use the sections below to learn the fundamentals of solar storage, exports, backup power and battery sizing.
What’s the Difference Between kW and kWh?
This is one of the most common points of confusion in solar and battery systems.
kW (Kilowatts)
kW measures power – how much electricity is being used or produced at a specific moment.
Example:
- A 10kW solar system can produce up to 10 kilowatts of power under ideal conditions.
kWh (Kilowatt-hours)
kWh measures energy over time.
Example:
- If you use 2kW continuously for 5 hours, you consume 10kWh of energy.
Why It Matters
- Solar panels are typically sized in kW
- Batteries are typically sized in kWh
Understanding both helps determine whether a battery system will actually cover your evening and overnight energy usage.
Fixed Exports vs Dynamic Exports
When your solar system produces more energy than your home uses, excess electricity is exported to the grid.
Fixed Export Limits
Many properties have a fixed export limit set by the local network provider.
Example:
- A system may be limited to exporting 5kW regardless of how much solar is being generated.
Dynamic Exports
Dynamic exports allow export limits to adjust in real time depending on grid conditions.
Benefits may include:
- Higher export capacity during low-demand periods
- Better solar utilisation
- Reduced energy curtailment
Why This Matters for Battery Systems
Export limitations can influence:
- Solar system sizing
- Battery charging behaviour
- Payback periods
- Overall system performance
We assess export conditions carefully before recommending system designs.
Why Battery Sizing Matters
Choosing the right battery size is just as important as choosing the right solar system.
A battery that is too small may:
- Run out early in the evening
- Provide limited savings
- Deliver poor backup performance
A battery that is too large may:
- Take longer to pay for itself
- Remain underutilised
- Add unnecessary upfront cost
What We Consider
We size batteries based on:
- Evening energy usage
- Overnight loads
- Solar generation capacity
- Backup power requirements
- Future energy plans such as EV charging
Our goal is to recommend a battery that matches your real-world energy usage. Not simply the largest system possible.
Battery Backup vs True Off-Grid Systems
Many people assume a battery automatically powers the home during a blackout. In reality, not all battery systems include backup capability.
Battery Backup Systems
Backup-enabled systems can power selected circuits or the entire home during grid outages.
Depending on the setup, this may include:
- Lights
- Refrigeration
- Internet
- Essential appliances
True Off-Grid Systems
An off-grid system operates completely independently from the electricity network.
These systems typically require:
- Larger battery storage
- Additional solar capacity
- Backup generators
- Advanced energy management
Why the Difference Matters
Backup capability, blackout protection and full off-grid operation all require different system designs and hardware selections.
We help homeowners understand the practical differences before making a decision.
Why More Solar May Be Needed Before Adding a Battery
A battery can only store excess solar energy that your system generates during the day.
If your existing solar system is undersized, there may not be enough surplus energy available to charge a battery effectively.
Common Scenarios
You may benefit from additional solar panels if:
- Most solar power is already consumed during the day
- The battery rarely reaches full charge
- Evening usage is high
- Future electricity demand is increasing
Why This Matters
In many cases, improving solar generation first can provide better financial outcomes and stronger battery performance.
We assess your existing system carefully to determine whether battery storage, additional solar, or a combination of both will deliver the best long-term result.
MAKING SOLAR & BATTERY MORE ACCESSIBLE
There are a range of government rebates, incentives, and financing options that may help reduce the upfront cost of your solar and battery system.
Battery Rebates & Incentives
Depending on your location and system design, you may be eligible for available energy storage incentives or rebates. These programs vary by state, network provider, and installation type.
Flexible Finance Options
We can help connect you with flexible finance solutions that allow you to:
- Spread the cost over manageable repayments
- Install your system sooner without large upfront payments
- Structure payments around your budget
Eligibility Disclaimer
Rebate eligibility and incentive amounts are not fixed and will depend on:
- Your property location
- System size and configuration
- Network approval requirements
- Current government and energy programs at the time of installation
A full assessment is required to determine what you may be eligible for.
For Business Owners (ABN Holders)
If you are installing a system under an ABN, there may be additional tax benefits or depreciation advantages available depending on your business structure. We recommend discussing this with your accountant to understand your specific situation.
Talk to Our Team
We can assess your property and provide a clear breakdown of available rebates, financing options, and estimated system costs tailored to your setup.
Frequently Asked Questions
Common Questions About Solar & Batteries
How long do batteries last?
Modern lithium solar batteries typically last between 10 to 15 years, depending on usage patterns, system design, and brand quality. Most reputable manufacturers also provide performance warranties covering around 6,000–10,000 cycles.
Can batteries work during blackouts?
Yes, but only if the system is designed with backup capability. Not all battery systems automatically provide power during outages. Backup systems require specific inverter configurations and usually support selected essential circuits such as lights, refrigeration, and internet.
Can I add a battery to my existing solar system?
In many cases, yes. However, compatibility depends on your existing inverter type, system age, and electrical setup. Some systems may require upgrades to support battery integration effectively.
How much battery storage do I need?
Battery size depends on your household energy usage, particularly evening and overnight consumption. Other factors include whether you want blackout backup and if you plan to increase usage in the future (e.g. EV charging).
Are batteries worth it in Australia?
For many households, batteries can be worthwhile due to rising electricity costs, feed-in tariff changes, and government incentives. However, value depends on system size, usage patterns, and available rebates.
Can batteries power air conditioners?
Yes, batteries can run air conditioners, but the duration depends on both battery capacity and the air conditioner’s power demand. High-usage cooling systems will require larger storage to maintain longer runtime.
What happens during cloudy weather?
On cloudy days, solar production is reduced. This means batteries may charge more slowly and households may rely more on stored energy or grid supply depending on system design.
Do batteries require maintenance?
Modern lithium battery systems are designed to be low maintenance. Most systems require no regular servicing, aside from occasional monitoring through the system app or inverter interface.
READY TO GO BEYOND THE GRID?
Ready To Reduce Your Reliance On The Grid?
Every home and business uses energy differently. That’s why we design tailored solar and battery systems that focus on performance, reliability, and long-term savings not one-size-fits-all packages.
Whether your goal is to lower your power bills, gain backup protection during outages, or increase your energy independence, our team will guide you through the best solution for your needs.
Thanks for your enquiry!
You've unlocked our E-book "Remove Your Reliance On The Grid!"
In this E-book:
– How to get your Energy Bills to $0 if you’re in a regional area
– How to know when you should invest in a battery
– How to know what system you should get?
– What is Off-Grid Solar?
– Top Tips for Regional Energy Consumption
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