About Solar Batteries

With electricity prices continuing to rise and homeowners becoming more conscious of running costs, the uptake of battery storage systems in Australia is expected to quickly grow into a billion-dollar-a-year market.

To find out the wealth of benefits solar batteries can bring to both your home and the grid as a whole, read on.

Benefits of Solar Batteries for the Home

Significant Electricity Savings

Investing in a solar battery system for your home can help you save more money on your electricity bills, compared to just installing solar alone. Rather than exporting your excess solar energy to the grid for a small feed-in tariff (across Australia the average is around 9 cents per unit), your solar battery will store any excess electricity, allowing you to use it later in the evening, when your solar PV system is not generating any electricity. This will greatly decrease the amount of electricity you’re required to buy from the grid at full price (around 25 to 26 cents per unit), resulting in significant savings.

Energy Independence

Installing a battery bank at your home or business lessens the amount of energy you’ll need to buy from the grid. This decreases your reliance on the grid and major energy retailers, giving you more energy independence.

Energy Arbitrage

If your home is on a Time of Use Tariff, installing a solar battery means you can benefit from energy arbitrage. By charging your battery bank during off-peak rates and using your own stored electricity during peak rates, you’ll end up pocketing the difference and saving a lot of money on your electricity bills. Energy arbitrage can be accomplished with or without a solar PV system.

Backup Power in Case of Grid Outages

In some cases, it’s possible to install your home battery storage system to provide your home with backup power. This gives you the convenience and flexibility of always having electricity, regardless of what’s happening on the grid.

Benefits of Solar Batteries for the Grid

Reduced Pressure on Electricity Networks

By installing a home battery and taking pressure off the grid, your home is helping contribute to the longer life of local infrastructure and resources. This lessens the frequency of costly network upgrades, which end up being paid for by all grid users.

Mitigating Power Intermittency Caused by Solar PV

While solar PV systems produce electricity steadily and predictably throughout the day when the sun is shining, if there is cloud cover or any sort of climate disruption, solar electricity output for an entire region can fluctuate unpredictably, requiring other generation plants (typically coal and gas) to be brought quickly online to meet demands.

This can cause a lot of stress and strain for the grid. Common adoption of home battery storage systems would mitigate the impact of this problem, using the stored electricity of their own batteries, rather than the grid, to make up for any power shortages. Widespread uptake of batteries could also help to manage unintended voltage level fluctuations, helping current grid infrastructure have a longer life.

State of the Art Technology

Installing a battery bank means your home will be able to take advantage of future regulatory changes which will allow households, small businesses, and community groups to trade rooftop solar generated electricity between each other. Investing in a battery will allow you to store your excess solar electricity, and selling it to neighbours for more than the gazetted feed-in tariff rate, effective bypassing major energy retailers.

Enphase Battery

Tesla Power Wall 2

A Revolutionary Battery For Home and Business

Powerwall 2 is designed to store any excess solar energy your PV system produces. This allows owners to power their home or business with free solar energy during the day or night, and can provide seamless and reliable power in the event of a blackout.

Powerwall 2 also requires no maintenance and comes with a 10-year warranty.

The Tesla Powerwall 2 will also be able to be used for:

  • Energy arbitrage
  • Peak shaving
  • Backup power


How is Powerwall 2 Different?

Powerwall 2 offers 13.5kWh of usable capacity, and comes with an in-built inverter. This allows Powerwall 2 to convert DC power to AC power internally, getting rid of the need for an extra hybrid inverter. This will result in lower installation costs and a much easier installation process.

Safety and battery life is maximised thanks to the liquid thermal controls and touch safety technology.

Users can seamlessly monitor and automatically manage your Powerwall, solar panels, Model S or X with the Tesla App.

With over-the-air software updates, Powerwall 2 will continue to improve and adapt to your lifestyle.

Enphase IQ Battery 10

The Enphase IQ Battery 10 all-in-one AC-coupled storage system is reliable, smart, simple, and safe. It is comprised of three base IQ Battery 3 storage units, has a total usable energy capacity of 10.08 kWh and twelve embedded grid-forming microinverters with 3.84 kW power rating. It provides backup capability and installers can quickly design the right system size to meet the needs of both new and retrofit solar customers.

While not yet available in Australia(Expected Q2- 2023) some it’s details are listed below.

  • Fully integrated AC battery system
  • 3 IQ Battery 3 storage units
  • 12 embedded IQ8X-BAT Microinverters
  • Stable lithium iron phosphate (LFP) chemistry for maximum safety and longevity
  • Quick and easy plug-and-play installation
  • Remote software and firmware upgrades
  • Grid-forming capability for backup operation
  • Mobile app-based monitoring and control
  • Support for self consumption
  • Utility time of use (TOU) optimization
  • 10-year limited warranty

Technical Specifcations

  • Power rating: 3.84 kW
  • Energy capacity: 10.08 kWh
  • Peak output power: 5.76 kVA
  • Rated output power: 3.84 kVA
  • DC round trip efficiency: 96%
  • AC round trip efficiency: 89%
Length 188 mm
Width 1283 mm
Height 775 mm
Weight 316.5 lbs

Compatability with existing enphase systems

  • IQ Battery
  • IQ Series Microinverters
  • IQ System Controller
  • Wireless Communication Kit
  • IQ Combiner
  • M Series Microinverters


Enphase IQ Batteries are covered by an industry-leading 10-year limited warranty, with an optional 5-year limited warranty extension available for purchase.

Enphase IQ 10 Home Battery



The BYD Battery Premium storage system is based on lithium iron phosphate, which is one of the most reliable storage technologies available. The battery has a modular structure and can be expanded in steps of 2.76 kWh for the HVM, giving you the option for your storage to be expanded on at a later date.

BYD or Build Your Dreams( I kid you not.) are one of the largest battery manufacturers world wide You can knock the name but not the product, after all Warren Buffett owns 24% of the company and he knows a thing or 2 about investing in winners. The BYD HVM range is modular so expansion in the future is possible and it means your not locked into buying 10 or 14kW units when that much is not required.

They couple beautifully with Fronius Gen24 Hybrid inverters which also means that a larger PV system is possible as the Hybrid inverter can take both DC from solar panels and Dc from the lithium battery. 

One Battery-Box Premium HVM is composed of 3 to 8 HVM battery modules that are connected in series to achieve a usable capacity of 8.3 to 22.1 kWh.

BYD Battery Box Home

BYD HVM Data Sheet

BYD HVM Battery Box Warranty

    Technical Specifications

    Tesla PW2

    Technology Wall mounted, rechargeable lithium ion battery with liquid thermal control.
    Model 14 kWh
    Warranty 10 years
    Power 7kW peak / 5kW continuous
    Usable Capacity 13.5kWh
    Supported Applications Solar self-consumption
    Time of use load shifting
    Off grid
    Scalable Up to 9 Powerwalls
    Operating Temperature -20°C to 50°C
    Enclosure Floor or wall mounted
    Indoor or outdoor
    Installation Requires installation by a trained electrician
    Weight 264.4 lbs / 110 kg
    Dimensions 1150 mm x 755 mm x 155 mm

    Technical Specifications



    Technology Wall mounted, rechargeable lithium ion battery _LFP
    Model 10.08 kWh
    Warranty 10 years
    Power 5.76kW peak
    Usable Capacity 10.08Wh
    Supported Applications Solar self-consumption
    Time of use load shifting
    Off grid
    Scalable Up to 9 Powerwalls
    Operating Temperature -20°C to 50°C
    Enclosure Floor or wall mounted
    Indoor or outdoor
    Installation Requires installation by a trained electrician
    Weight 45 kg
    Dimensions 450 mm x 355 mm x 155 mm

    Technical Specifications

    BYD Battery-Box Premium HVM

    Round trip efficiency ≥96%
    Battery Cell Technology Lithium Iron Phosphate (cobalt-free)
    Useable battery capacity 8.3kWh – 22.1kWh
    Ambient temperature range 5C to 40C
    Warranty 10 years
    Dimension (W x H x D)
    (HVM 11.0)
    1,178mm x 585mm x 298mm
    (HVM 11.0)
    167kg (38kg per battery module)
    Communication CAN/RS485
    Enclosure Protection Rating 1P55 (Indoor and Outdoor)
    Communication RS485


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