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Solar Batteries Brisbane

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Let's Obliterate Your Electricity Bill with a Solar Battery

  • A Solar Battery Perfectly Aligned with Your Energy Usage 
  • Industry leading Solar Batteries Paired with First-Class Design and Installation
  • Reliable Warranties Backed by Continuous After-Sales Service

Tesla Powerwall 2 Price

At the tail end of 2023, the Tesla Powerwall price dropped significantly, making the Tesla Powerwall 2 not only a bells and whistles battery but a cost-effective solution.

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Tesla Powerwall 2 Price Solar Battery Brisbane

Get Started With A Tesla Powerwall Solar Battery – Brisbane 
Perfect if you already have an existing Solar System:

  • The Tesla Powerwall 2 is a perfect retrofit solution for any existing solar system, or added to a new solar package.
  • 10-year Warranty
  • Includes Black-Out Protection
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13.5kWH One Tesla Powerwall Solar Battery
  • One Tesla Powerwall – 13.5kWH
  • 10-year Warranty
From $15,900*
27kWh Two Tesla Powerwalls Solar Battery
  • Two Tesla Powerwall – 27kWh
  • 10-year Warranty
From $28,900*
Three Tesla Powerwalls - 40.5kWh
  • Three Tesla Powerwalls – 40.5kWh
  • 10-year Warranty
From $39,900*

* Indicative prices based on a standard solar battery installation
* Prices are with STC Rebate applied (AKA: Gov Rebate)

“The Solar Battery market is an absolute minefield. After a tonne of research, it’s clear that Tesla and BYD just do Solar Batteries better.”

— Mark Cavanagh, MC Electrical

Queensland Electrician showing customer a Tesla solar battery
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5.1kWh Solar Battery Package

BYD Solar battery Brisbane - first home buyer

Get Started With A BYD Solar battery Brisbane 

BYD’s entry level option – the cheapest way to get solar batteries. (Upgradeable to 7.7kWh per stack)

  • BYD – 5.1kWh HVS Upgradeable Solar Battery
  • Fronius GEN24+ Inverter
  • Canadian Solar 440W Panels
BYD Solar system

Is a 5.1kWh solar battery big enough? Read about this easily upgradable Battery in Mark’s 5kWh BYD miniBLOG

5.1kWh BYD Solar Battery Brisbane
  • Perfect If You Already Have An Existing GEN24+ Solar System
  • 5.1 kWh BYD Solar Battery
  • 10-year Warranty
From $8,000*

From $ 8,800 If You Have An Upgradeable Gen24 Inverter.
Not Including Black-out Protection

5.1kWh BYD Battery + 6.5kW Solar - Solar Battery Brisbane Package
  • 5.1kWh BYD Solar Battery – 10-year Warranty
  • 5kW Fronius GEN24 Plus – 10-year Warranty
  • 15 x Canadian TOPCON 465W Panels – 25-year Warranty
From $17,900*

Includes Black-out Protection

* Indicative prices based on a standard solar battery installation
* Prices are with STC Rebate applied (AKA: Govt Rebate)

The most custom-fit home storage solution.

5.1 to 57.9kWh

Mark Explains 5 Things You Need To Know When Buying A Solar Battery

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11kWh Solar Battery Package

BYD Solar Battery Brisbane - Professional Couple Package

BYD’s Most Upgradeable Solar Battery, Scale Up Your Batteries As Your Energy Needs Grow! (upgradeable To 22kwh).

  • BYD – 11kWh HVM Upgradeable Solar Battery
  • Fronius GEN24+ Inverter
  • Canadian Solar Panels
BYD Solar system

Discover how easily this battery can be upgraded, and which homes would best suit an 11kWh BYD battery. Read Mark’s 11kwh BYD miniBLOG

11kWh BYD Solar Battery Brisbane
  • Perfect If You Already Have An Existing GEN24+ Solar System
  • 11 kWh BYD Solar Battery
  • 10-year Warranty
From $13,500*

From $14,400 If You Have An Upgradeable GEN24 Inverter
Not Including Black-out Protection

11kWh BYD Battery + 7.9kW Solar - Solar Battery Brisbane Package
  • 11kWh BYD Solar Battery – 10-year Warranty
  • 6kW Fronius GEN24 Plus – 10-year Warranty
  • 17 x Canadian TOPCON 465W Panels – 25-year Warranty
From $22,400*

Including Black-out Protection

* Indicative prices based on a standard solar battery installation
* Prices are with STC Rebate applied (AKA: Gov Rebate)

Did You Know?

BYD do not use Cobalt or Nickel in their home storage batteries. A more sustainable and ethical home storage solution.

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13.8kWh Solar Battery Package

BYD Solar Battery Brisbane - Three Kids And A Pool Package

There’s A BYD Solar Battery For All Situations. Byd’s Upgradeable 13.8kwh Battery – Scale Up Your Batteries As Your Energy Needs Grow! (upgradeable To 22kwh)

  • BYD – 13.8kWh HVM Upgradeable Solar Battery
  • Fronius GEN24+ Inverter
  • Canadian Solar Panels
BYD Solar system

Mark explains the advantages 3⏀ Fronius and BYD in a blackout. Read Mark’s 13.8kWh BYD miniBLOG

13.8kWh BYD Solar Battery Brisbane
  • Perfect If You Already Have An Existing GEN24+ Solar System
  • 13.8 kWh BYD Solar Battery
  • 10-year Warranty
From $15,400*

From $16,300 If You Have An Upgradeable Gen24 Inverter
Not Including Black-out Protection

19.3kWh BYD Battery + 13.2kW Solar - Solar Battery Brisbane Package
  • 19.3kWh BYD Solar Battery – 10-year Warranty
  • 10kW Fronius GEN24 Plus – 10-year Warranty
  • 28 x Canadian TOPCON 465W Panels – 25-year Warranty
From $31,250*

Includes Black-out Protection

* Indicative prices based on a standard solar battery installation
* Prices are with STC Rebate applied (AKA: Govt Rebate)

Call 3268 3836 or Request A Callback For A Free Quote

Which BYD package is right for you?

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Everyone Knows Fronius Is The Best Solar Inverter...

Discover Why We Are One Of The Only Ten "Fronius Solution Partners Plus" In Australia - And How That Benefits You!

Mark’s Solar Battery Mini Blog

Solar Battery for the First Home Buyer

5.1kWh BYD Solar Battery Brisbane

Load profile: 8kWh/day, 8kWh/ night
$450 power bill

Proposed System

5.1kWh Upgradable BYD Battery Box
5kW Fronius Primo Gen24 inverter
6.6kW Solar Panels 

This is a small battery suited to a customer that just wants a bit of backup power in case of a blackout or a customer who is conservative with evening power usage and wants to avoid the peak demand tariff. 5kWh is the smallest battery BYD offers. Anything smaller would be a token toy. This battery is a good entry-level size from the Electric Vehicle company that started out as a battery maker in 1995. The battery can easily be upgraded when you have data from your Fronius monitoring and a bit more cash in the bank.  

Ballpark Average Solar Production
30kW Summer, 18kW Winter 

To future-proof a little, you could easily install a 6kW inverter & 7.9kW of panels to add 20 per cent more production. 

Battery capacity:

Usable storage = 5.1 kWh
Fastest charge rate = 4.49kW.
Continuous discharge = 4.49kW (plenty for a smaller battery) 

If you use a conservative amount of power during the daytime (8kWH) you will still be able to fully charge this battery on a midwinter’s day. Even for humble households, the battery will fully discharge most nights. That’s getting great use out of your solar battery, and it will not affect your warranty. 

Savings

The 5.1kWh BYD Battery Box is warranted for 15410kWh of usage, or almost one cycle a day for 10 years. If you calculated your savings on a traditional Brisbane tariff, this system would save you a maximum of $2200 in its warranty period. However, in 2022, Queensland is rapidly changing to “Demand tariffs,” where you are penalised for using power between 4 pm and 9 pm. Using your stored solar power during that time could save you significantly more. More importantly, your first home will be closer to being independent of coal-fired electricity, and your lights and power will work in a blackout. 

Blackout:

You’ll want to decide if you will set a “reserve” limit on the battery. If you set a 2kW reserve, you will be guaranteed at least 2kW in a blackout. However, your solar battery will only have 3.1kWh to charge and discharge daily. 

Max discharge during a blackout is a huge 4.49kW. However, to prevent the solar battery from discharging too quickly during a blackout, it may be wise to have just one light circuit and the kitchen power points only. 

Upgradeable Battery

At any time, you can easily add one more battery module to make your BYD solar battery 7.7kWh. You can do this now or later. 

You can then add a second or third stack of batteries to give you 15.4kWh or 23.1kW of storage. Each stack will require its own battery management unit. If you intend on upgrading to more than 7.7kWh of solar storage, you may be better off starting with our next package, the more easily expandable 11kWh battery. 

Solar Batteries for the Professional Couple

11kWh BYD Solar Battery Brisbane

Load profile: 6kWh/day 14kWh/night
$600 power bill

Proposed System

11kWh Upgradable BYD Battery Box
6kW Fronius Primo
7.8kW Solar Panels

The 11kWh BYD battery uses a lower battery module voltage than the 5kWh battery, allowing you to stack more modules in one stack. This package is a large storage system on a smaller solar system. It would be great for the couple who work by day and run the air conditioner by night. If you are uncertain about your energy consumption patterns, we’d recommend installing solar first and using the Fronius monitoring battery tool so we do not unnecessarily oversize your battery. It is fine to undersize with BYD, as we can retrospectively upgrade it in 2.5kWh increments. If you oversize the battery, you can just set your blackout “reserve limit” higher.  

BYD is a company that Warren Buffet bet big on in 2008. It hasn’t let him down. 

Ballpark Average Solar Production
36kW summer, 22kWh Winter 

To future-proof a little, you could easily install a 6kW inverter & 7.9kW of panels to add 20 per cent more production. 

Battery capacity:

Usable energy = 11kWh
Fastest charge rate = 4.49kW
Continuous discharge = 4.49kW (just a tad less than a Tesla Powerwall) 

Savings

It is warranted for 34,150 kWh of usage. If you calculated savings on Brisbane’s historical tariffs, the 11kWh BYD battery would save you a maximum of around $4,800 in its warranty period. However, Queensland is rapidly changing to “Demand Tariffs”, where you are penalised for drawing power in the evening. A correctly sized battery will protect you from these demand tariffs and potentially save you a lot more.

If you chose a 6kW inverter, you are much less likely to waste energy by “export limiting”. More of your solar can be harvested, saving you a little bit more money. But solar batteries are less about savings & more about energy independence – and electricity stability.

Blackout

If your main aim is to have solar storage for a blackout, you may want us to set your battery to discharge to no more than 2kWh in normal operation. While this will ensure you always have some reserve power in a blackout, it will naturally limit the normal nighttime battery capacity. It’s a tradeoff. The chances are – your battery will not be completely flat when a blackout occurs anyway.

The max discharge rate is a healthy 4.49kW total and 3.68kW per phase. A conservative Brisbane couple could back up their whole house with this – including your hot water. If your battery charge gets too low, you may just want to manually turn off your hot water and air conditioning during a blackout.

Upgradeable

This solar storage battery can easily be upgraded to 13.8kWh, 16.6kWh, 19.3kWh or even 22.1 kWh. You could also install a second stack of solar batteries, but that wouldn’t make much sense with a smaller solar system. Maybe you should plan ahead for a baby.

Solar Batteries for a small family

10.2kW BYD Solar Battery Brisbane

Load profile:12kWh day, 10kWh night
$650 power bill

Proposed System

10.2 kWh BYD battery
6kW Fronius Symo Gen24
7.9kW Solar Panels 

This BYD solar battery Brisbane system allows for a healthy 7.9kW solar system and a decent sized battery. With a three-phase home, you will want the Fronius & BYD option over any other for the reasons below. If you have a small family household with some daytime usage, a 7.9kW solar system should be able to charge a 10.2 kWh battery most of the year round. It may be wise to install solar before the battery so we can use your Fronius data to ensure we don’t oversize the battery.  

Ballpark Average Solar Production
36kW Summer, 22kW Winter 
BYD Battery Statistics:

Usable energy = 10.2kWh
Fastest charging rate = 6kW
Continuous discharge = 6kW or 3.68kW/phase 

Savings

The BYD Battery Box is warranted for 30,820 kWh of usage which in the past would have worked out as a maximum saving of $4,300 in its warranty period. However, with Queensland’s new “Demand Tariffs,” you are charged a higher rate for using power in the evenings. If you eliminate your evening load with a battery, your savings could be significantly more than they would be otherwise.
Nevertheless, batteries are still mainly about protecting yourself from future energy hikes, being mostly independent of the grid, and having power in a blackout.

Blackout

The advantage of Fronius & BYD on three-phase is a no-brainer. If you have a blackout during the day, your solar panels will keep charging the battery. You would think you can take this for granted – but it does not work that way with most 3-phase battery solutions.

Additionally, during a blackout, you can supply a three-phase load, such as an air conditioner. That would work just fine during a hot summer’s day while your solar is continually topping up your battery for nighttime use.

If you are concerned about having power in a blackout on a stormy day, you may want us to set your battery to discharge no further than 2kWh. This will ensure you always have some reserve power in a blackout, but it will limit your discharge capability during normal operation.

Maximum discharge in a blackout is 6 kW over 3 phases. However, each phase is limited to 3.68kW. While this won’t affect your savings while connected to the grid, you won’t be able to go crazy with hot water and air-conditioning on the same phase. It may be safer to leave your hot water off backup.

Upgradeable

To upgrade this battery, you would need to buy another battery charging module (BMS). You could upgrade to 15.3kWh (by splitting the first stack) or to 20.2kWh (by adding a completely new stack.)

However, if you wanted the option of upgrading, you may be better off starting with the 11kWh battery. And if roof space permits, you might want to consider a second or third kid.

Solar battery for a medium family

13.8KW BYD SOLAR BATTERY BRISBANE

Load profile: 16kWh day, 20kWh night
$800 power bill

Proposed System

13.8 kWh BYD battery
10kW Fronius Symo
13.3kW Solar Panels 

This BYD solar battery Brisbane system allows for a three-phase family sized solar system and a battery that will cover most of your nighttime load. With your pool running during the day, and kids home at 3 p.m. and school holidays, you will use a significant amount of solar during the day. The larger 13.3kW solar system may be needed to ensure your battery gets charged each day.  

As I’ll explain below, the three-phase GEN24 / BYD combo has significant advantages over most other battery systems.

Ballpark Average Solar Production
60kW summer, 36kWh Winter
Battery Capability

Usable energy = 13.8 kWh (bigger than the Tesla Powerwall)
Fastest charging rate = 5.63kW (faster than the Tesla Powerwall)
Continuous discharge = 5.63kW (higher than the Tesla Powerwall).

Savings

It is warranted for 42690kWh of usage. If you worked out your savings on the old Brisbane and surrounds tariff structure, this battery would save you around $6000 in its warranty period. However, South East Qld is changing to a demand tariff structure where you are penalised for using grid power in the evening. Depending on the energy plan you choose, and your usage patterns, a battery can save you significantly more when you cook dinner for the kids using your stored solar power. More importantly, you can say goodbye to future blackouts.

Blackout

The advantage of the Symo Gen24 is your panels will keep charging the solar battery in a blackout. Most other 3-phase inverter + battery solutions (e.g., Tesla Powerwall) will inconveniently disengage the solar panels when you have lost grid power.

Max discharge in a blackout is a healthy 5.63kW over three phases and 3.68kW maximum per phase. Assuming you are sensible in a blackout, you could potentially back up your whole house. You may just need to downsize any large 3.6kW hot water elements. Whole house backup is not recommended with other inverters (e.g. Sungrow) because you could overload the inverter while connected to the grid.

The Fronius Gen24 inverter can also uniquely supply 3-phase power in a blackout – but with a 13.8kWh battery and the limited 5.63kW discharge rate, you wouldn’t want to run your ducted air-conditioning for extended periods. – unless it was a sunny Brisbane day.

If you are concerned about being self-sufficient in a blackout during stormy weather, you can always upgrade to another solar storage module down the track and set a minimum reserve capacity for blackouts.

Upgradeable

This BYD solar battery is easily upgradable to 13.8, 16.6, 19.3 or 22.1kWh by simply adding extra battery modules. This will also significantly increase your discharge rate. You can go even higher by adding a second or third stack of batteries, but if you do that, you’d probably want more solar, too.

Solar batteries for a large family

22.1kW BYD Solar Battery Brisbane

Load profile: 40kwh a day, 30kWh at Night
$1600 power bill

Proposed System

22.1 kWh BYD solar battery
10kW Fronius Gen24 + 5kW Fronius Snapinverter
19.9kW Solar Panels

This BYD solar battery Brisbane system is for a three-phase large family solar system with a battery that won’t quite cover an average summer’s night. The Solar is maxed out, and depending on seasonal household consumption, it may still struggle to fully charge your solar storage battery regularly in wintertime. Any load profile is hard to guestimate. Instead of installing a 22.1kWh BYD battery on the same day as your solar, I’d suggest you install an 11kWh battery and wait 12 months for your Fronius monitoring data.

Ballpark Average Solar Production
90kW Summer, 54kW winter
Battery Capability

Usable energy = 22.1 kWh
Fastest charging rate I = 9kW
Continuous discharge = 9kW (3.68kW/phase)

Savings

The 22.1kWh BYD Battery box is warranted for 68,310 kWh of usage. If you worked out your savings on the old Brisbane tariff structure this battery would save you around $9,500 in its warranty period. However, depending on the new Demand energy plan you choose, a battery can save you significantly more because you won’t need to rely on the grid at peak times. More importantly, you’ll be less affected by blackouts.

BYD in a Blackout

One reason I recommend the Fronius Symo GEN24 is that your panels will keep charging the solar battery in a blackout. Believe it or not, most other 3-phase inverter + battery solutions are useless for an extended blackout because they can’t keep charging your battery from your solar panels when grid power is lost. (e.g: Tesla Powerwall)

The maximum discharge with this system in a blackout is a healthy 9kW over three phases and a 3.68kW maximum per phase. Unlike the Sungrow RT Hybrid inverter, this Fronius/BYD combo could back up a large house. We would just need to be careful of balancing large hot water systems for off-grid mode, and you’d need to use common sense about the solar storage battery charge levels.

The Fronius Gen24 inverter can also supply 3-phase power such as ducted aircon in a blackout – and with a 21kWh battery, and a 9kW discharge rate, you could get away with it if you were not running other heavy loads at the same time.

Upgradeable

To upgrade this solar battery, you would need to add another BMU (battery management unit) but you could increase the solar storage in 5.5kWh increments by adding old batteries with the new stack. This would also increase your charge and discharge rate to 10kW. But why not go the whole hog – and be prepared for the worst!

Commercial Solar Batteries/Armageddon Prepper.

57.9KWH BYD SOLAR BATTERY BRISBANE

Load profile: 20kWh a day, 30kWh a night
$1100 power bill

Proposed System

57.9 kWh BYD solar battery (3 stacks of 19.3 kWh)
10kW Fronius Gen24 + 5kW Fronius Snapinverter
19.9kW solar panels

If you are a serious prepper, you would not purchase such a large battery system without 6 to 12 months of monitoring with solar installed. When installed, you would still want to keep around 20 kWh of this battery in reserve for a blackout or WWIII. Not fully discharging your battery would also make it much more likely to charge your battery back to a healthy state on an overcast day.

If you are in the energy-guzzling family; you may not always have enough energy to fully charge this solar battery. If the solar storage is not fully charging at least once a week, we’d suggest increasing the reserve power limit, so your battery does not degrade too quickly.

As a prepper, you will want proven reliability. BYD makes the world’s largest electric buses. They’ll work just fine powering your home.

Ballpark Average Solar Production
90kW Summer, 54kW winter
Battery Capability

Usable energy = 57.9 kWh
Fastest charging rate = 10kW
Continuous discharge = 10kW (3.68kW/phase)

Savings

It is warranted for 179,310kWh of usage. If you calculated savings on a traditional 8-cent feed-in tariff, this solar battery alone would save you around $25,000 in its warranty period. However, all Brisbane homes will soon be on a “Demand Tariff,” where you are penalised more for using power between 4 pm and 9 pm. This is when a battery can offer significantly higher savings while minimising your impact on the grid’s peak demand. More importantly, your family will be ready for the zombie apocalypse.

Blackout

If you want a guarantee of power when that day comes, you will want to set a reserve power limit on your solar battery. However, assuming you have some sunshine, a battery and a solar system, this size should be able to keep you comfortable for many weeks without grid power.

The max discharge rate in a blackout is a huge 10kW or 3.68kW per phase. The Fronius GEN24 inverter can supply 3-phase power in a blackout – so you will even be able to run 3-phase loads in a blackout – such as a bunker air filtration system.

Unlike most 3-phase solar battery storage systems, your GEN24 inverter will keep charging the BYD battery in a blackout. Almost every other 3-phase battery solution cannot keep a 3-phase solar inverter online – so you wouldn’t last without grid power for more than a day.

Upgradeable

Congratulations. At 57.9kW, you have realistically maxed out your BYD solar battery capacity.

Mark's YouTube And Blog

If you want to do your homework before purchasing a solar panel system, Mark’s blog is one of the most valuable resources you’ll find. Mark reviews solar panels, solar batteries, solar inverters, solar optimisers, microinverters and solar installation methods. See why Mark and the team at MC Electrical are considered solar industry thought leaders.

Watch Mark's Latest Video

The New 8kW & 10kW Primo Fronius GEN24

Read Mark's Latest Blog Post

Hot Water Heat Pump vs. Electric Element Calculator

Mark showing family tesla solar battery

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