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SOLAR BATTERIES BRISBANE

Solar Battery Prices

byd solar battery brisbane

“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.

tesla powerwall

Tesla Powerwalls – 13.5kWh, 27kWh, 40.5kWh

Tesla Powerwall Solar Battery Brisbane

GET STARTED WITH A TESLA POWERWALL BATTERY –  BRISBANE

  • Perfect if you already have an existing Solar System:
    The Tesla Powerwall is a perfect retro- fit solution for any existing solar system, or added to a new solar package.
  • 10 Year Warranty
  • Includes Black-Out Protection

tesla powerwall 2

Is a 13.5kWh solar battery big enough? Read about more in Mark’s miniBLOG

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 POWERWALLS – 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 standard installation, dependant on battery location and backup requirements.

Mark reviews Tesla Powerwall vs. BYD

MC Electrical are proud to be Tesla Powerwall Certified Installers

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 Battery Brisbane 5.1

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 Gen24PLUS Solar System

5.1 kWh BYD Solar Battery

10 Year Warranty

from $9,500 *

From $ 10,200 if you have an upgradeable Gen24 inverter.

Not including Black-Out Protection

Genuine 0% financing from Nectr  nectr_bee

5.1kWh BYD Battery + 6.6kW Solar - Solar Battery Brisbane Package

5.1kWh BYD Solar Battery – 10 Year Warranty

5kW Fronius Gen24 PLUS  – 10 Year Warranty

15 x 440W Panels – 25 Year Warranty

from $18,690 *

Including Black-Out Protection

Genuine 0% financing from Nectr  nectr_bee

* Indicative prices based on a standard installation

* Prices are with STC Rebate applied (AKA: Govt Rebate)

The most custom fit home storage solution.

byd solar battery stacks

5.1 to 57.9kWh

Mark explains 5 things you need to know when buying a solar battery

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 440W Panels

BYD Solar Battery Brisbane 11

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 Gen24PLUS Solar System

11 kWh BYD Solar Battery

10 Year Warranty

from $13,500 *

from $14,400 if you have an upgradeable Gen24 inverter

Including Black-Out Protection

Genuine 0% financing from Nectr  nectr_bee

11kWh BYD Battery + 7.92kW Solar - Solar Battery Brisbane Package

11kWh BYD Solar Battery – 10 Year Warranty

6kW Fronius Gen24 PLUS  – 10 Year Warranty

18 x 440W Panels – 25 Year Warranty

from $23,990 *

Including Black-Out Protection

Genuine 0% financing from Nectr  nectr_bee

* Indicative prices based on a standard solar installation

* Prices are with STC Rebate applied (AKA: Govt Rebate)

Did You Know?

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

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+ SYMO Inverter

  • Canadian Solar 440W Panels

BYD solar battery brisbane 13.8

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 Gen24PLUS Solar System

13.8 kWh BYD Solar Battery

10 Year Warranty

from $15,400 *

from $16,300 if you have an upgradeable Gen24 inverter.

Including Black-Out Protection

Genuine 0% financing from Nectr  nectr_bee

13.8kWh BYD Battery + 13.2kW Solar - Solar Battery Brisbane Package

13.8kWh BYD Solar Battery – 10 Year Warranty

10kW Fronius SYMO Gen24 PLUS  – 10 Year Warranty

30 x 440W Panels – 25 Year Warranty

from $31,000 *

Including Black-Out Protection

Genuine 0% financing from Nectr  nectr_bee

* Indicative prices based on a standard solar installation

* Prices are with STC Rebate applied (AKA: Govt Rebate)

Did You Know?

BYD uses a safer battery chemistry than most other home storage solutions. LifePo (Lithium, Iron, Phosphate) is safer than NMC (Lithium, Nickel, Manganese, Cobalt). 

22.1kWh Solar Battery Package

BYD Solar Battery Brisbane - Large Family + Office Package

The maxed out BYD Solar Battery Stack

BYD’S 22.1kWh BATTERY – This stack is maxed out! But Don’t Worry, if this still isn’t enough you can have up to 3 x 19.3kWh Stacks! (57.9kWh)

  • BYD – 22.1kWh HVM Maxed Out Solar Battery Stack

  • Fronius Gen24+ SYMO Inverter

  • Canadian Solar 440W Panels

byd solar battery brisbane 22.1

Who needs a 22.1kWh battery? How well does it work, and can I go bigger? Read Mark’s 22kWh BYD miniBLOG↓

22.1kWh BYD Solar Battery Brisbane

Perfect if you already have an existing LARGE Gen24PLUS Solar System

22.1 kWh BYD Battery

10 Year Warranty

from $21,000 *

from $21,900 if you have an upgradeable Gen24 inverter.

Including Black-Out Protection

Genuine 0% financing from Nectr  nectr_bee

22.1kWh BYD Battery + 19.8kW Solar - Solar Battery Brisbane Package

22.1kWh BYD Solar Battery – 10 Year Warranty

10kW Fronius SYMO Gen24 PLUS  + 5kW Fronius Snap Inverter – 10 Year Warranty

45 x 440W Solar Panels – 25 Year Warranty

$ POA *

* Indicative prices based on a standard solar installation

* Prices are with STC Rebate applied (AKA: Govt Rebate)

Which BYD package is right for you?

⇓⇓  KEEP SCROLLING  ⇓ ⇓

QUOTE FORM

Everyone knows Fronius is the best solar inverter …

Discover why we are one of only TEN “Fronius Solution Partners Plus” in Australia – and how that benefits you!

Fronius Solution Partners Plus

READ OUR CUSTOMERS’ REVIEWS

MC Electrical
4.9
Based on 234 reviews
We had a battery installed yesterday by MC Electrical. Installer Shane Telfer performed the job neatly and seamlessly. He explained the ins and outs of operating with the battery, and we had a short unexpected power outage overnight which proved to us how simply our power supply transitions from the grid to battery. The MC Electrical team installed our solar as well, and we can’t recommend them highly enough for their professionalism, follow-up and work quality, from their admin to their tradies.
Janene B
Janene B
Believe the reviews. Mark and the team did a great job at every stage of the process. Only regret is not doing it sooner.
Tanvir K.
Tanvir K.
Mark and his team did an excellent job. They came on time, and worked extremely hard. Michael the electrician was instrumental in explaining everything to us. The aftercare customer service was 10 out of 10. We spent a lot of time researching solar panels and the different companies. We are glad we picked MC Electrical and we would 100 percent recommend.
Angella K.
Angella K.
These guys are champions! - they helped us out with a pesky roof leak.They got onto it in a flash and reconnected our solar app to our new wifi router. We would highly recommend them to anyone, they understand great customer service. We are glad we chose them as our solar provider.
Mike R.
Mike R.
If you're reading this, you've probably entered the rabbit hole of getting solar quotes and wondering why the price is so extreme vs another. No need to look any further. Reviewers have saved you the hassle! MC electrical were exceptional to deal with pre sales and post install. They provide awesome quality all round (product and customer service!). Thanks Brady and Shane for your services. It's obvious Mark C wants the best for his customers too, with the extra effort he goes to with his videos and knowledge sharing.
Jaime B
Jaime B
Excellent communication and quality of work.
Tod C.
Tod C.
Team was great to deal with from start to finish. Explained all of the options and provided quotes on all of these to inform my decision on which system and components. Pricing was good and communication has all been great during the whole process. Installation went well and the team fully cleaned up afterwards so very happy.
Troy H.
Troy H.
We finally decided to put solar panels up and MC Electrical were one of few we looked at. Friends had recently employed MC Electrical and spoke in glowing terms of them and after speaking with Yorick we decided to go with MC Electrical. We were well informed throughout the process and the 8kW system installation (Nov 2023) went smoothly. A month and a bit after installation we had frame work for a new flyover roof installed and needed to moved some panels. Shane's help to get people here on a few days notice before xmas is very much appreciated. We are very happy with the service. I can recommend MC Electrical, simple as that.
Stephen W.
Stephen W.
Excellent sharing of information, Mark was very forthcoming with information.
Brian M.
Brian M.
MC Electrical installed a BYD battery (16.6 kWh), Fronius Symo GEN 24 8.0 Inverter and Wattpilot home 22kW EV charger on 18th September.The whole process from initial contact to installation and commissioning was very professional. I was kept fully informed throughout.Ben was very helpful with my requests for information and providing quotes for a few options.Shane (electrician), Jin and Stephan (apprentices) did a neat job replacing the existing inverter with the new one, installing the battery (connecting to my existing solar panels) and EV charger.A big thank you to Shane for returning promptly to track down a faulty isolation switch on the EV charger which was faulty on one phase.The system is performing very well.If you are looking at installing a PV system, battery or EV charger I recommend you give MC Electrical the opportunity to assist you.
Neil W
Neil W
I am aware a lot of people are having trouble with their solar retailers. I suspect its the nature of the industry with its race to the bottom (price). MC Electrical were not the cheapest, however now i can see why they weren't. Very sophisticated customer experience processes, they were patient with the covid delays and when it was time to install they did it in one morning, beautifully neat job.
Anton V.
Anton V.
MC Electrical have just installed a 13 kWh system at our house and I cannot recommend them highly enough.From the initial sales consultation to the pre install site visit by Alan and then the scheduling of the installation by the office staff to the actual installation by Alan and his team today, they all went above and beyond what was necessary to make the experience as easy as possible.It is rare to find diligent and efficient and professional "old school" service nowadays and MC Electrical have it in spades.If you want a solar system of the best quality installed by professionals then you need to contact MC Electrical.
Luke M.
Luke M.
Michael M.
Michael M.
Honestly, I am very appreciative of these guys. No fault of their own, my system was much more complicated than most jobs, including 3 phase meter upgrades for my business. They helped me with Energex and went above and beyond to make sure my solar system was connected and working. They were easy to talk to and always answered my questions both on-site and over the phone. This is my first time installing solar, and it can be a headache trying to sift through to find the right provider but boy am I glad to have found these guys. Highly recommend and thank you for the support.
Noel S.
Noel S.
A+++++ MC Solar & Electrical have exceeded my expectations. I had a 5KW system installed and it has been excellent. From the initial enquiry to quote, to installation and follow up, they have been very professional, prompt and reliable. Product and workmanship is second to none! They even rang me up a few weeks after the installation to check that everything including the solar wifi system monitoring has been going well. My power bills have dropped from over $1200 to below $200 per quarter after the installation! WOW, I'm very happy. I would recommend Mark and his team to anyone who wants good reliable service at a competitive price. Thank you again :)I was so happy I added another 10KW system after 6 years with the original (still going strong 💪) now I’ve got 15KW in total, the job done was excellent as before! Thanks again 😉
Huy Dinh V.
Huy Dinh V.
Great company. They aren't the cheapest but you get what you pay for so for an investment like solar you want to use someone you can trust. We installed solar using MC Electrical in 2022 and the before, during and after support is great. Strongly recommend using them.
Tim R.
Tim R.
WOW! I'm impressed. Right from the initial phone call the team from MC Electrical were fantastic! They weren't pushy like all the other solar companies we reached out to. We found them to be very open and honest about their products and the industry. It was easy to see that this company was very much customer focused. This was reflected in the respectful nature of the install team, and the follow up calls from the office ensuring everything went smoothly. We received regular updates of where we are at in the process and were regularly asked if we have any questions. Our solar has been installed and it is working beautiful (and looks amazing too). If you are chasing the WOW factor for quality products and services, make sure you reach out to MC Electrical.
Sarah W.
Sarah W.
It's now been several years since I have dealt with MC Electrical. I needed to contact them for an inverter fault. Shane made it so easy, just a picture from the panel and the unit was ordered. Shane's flexibility to bring flexibility forward the replacement was awesome for me as weather conditions had created an opportunity. His tech team was outstanding explained the process of the replacement and where he would need my assistance i.e. wireless setup and power off. He kept me informed through the process and addressed all my questions politely and in a way I could understand. When he was leaving there was no mess even though he had been drilling the wall for new mounts for the inverter. He also explained the difference I would see from the newer type of inverter. All round from the installation of solar to this replacement MC Electrical are just outstanding and have maintained that for years. Thank you, so much very happy camper, 🙂
Gary S.
Gary S.
They're the best in town for a reason! Every tiny details like the brackets they used to screw the panels onto the roof are of highest quality and rust-free.
Nicholas C.
Nicholas C.
Dane from MC electrical came out to inspect a roof leak that we thought may have been related to our solar panels.Dane went out of his way to locate the likely source and seal it up. Great service Thanks to Dane and MC electrical.
Don M.
Don M.
MC Electrical is absolutely amazing! Their sales team is top-notch, demonstrating excellent knowledge and expertise. The company's communication is outstanding, keeping me informed every step of the way. The traddies who handled the installation were not only respectful, but also completed the job quickly and efficiently. They took great care in leaving the site neat and tidy. I can't recommend MC Electrical enough!
Andrew J.
Andrew J.
Nice and neat installation. Cleaned up afterwards and all the blokes were nice and easy to chat with. The layout looked nice and professional. Would recommend.
Sweden
Sweden
If there was a 10 star rating they would have got that. Highest praise for all the team at MC Solar, real professionals quick always responsive and I am over the moon or should I say sun with the installation. Only possitives!!!!
John W.
John W.
Daniel K.
Daniel K.
MC Electrical’s installers were very professional, prompt and completed the install quicker than they had advised. The quotation process was excellent, no-nonsense and had no hidden surprises or exclusions.Cannot recommend them enough.
Ben P.
Ben P.
From our initial chat with Nicole through to Shane and the team that installed our new solar, the entire MC Electrical team have been an absolute pleasure to deal with. We are very happy with our new solar and helping do our part for the planet. I would recommend them to any who wants to get solar!Thanks again 😊
Jayden B.
Jayden B.
MC Electrical state that one of their goals is excellent customer service and support. This customer focus is very evident even in just the nice little additions that they add. Post sales support has been excellent. I highly recommend this very professional crew, as I know you will always be very happy with the result.
Andrew G.
Andrew G.
I had a long technical talk with Mark today about Solar in general. Even though I am not from Qld., and can't purchase from him, I am mightily impressed by his knowledge and very appreciative of his advise.He has direct contact with Fronius in Austria and is thus very up to date with their products. Part of his advise was to use Solar Analytics in order to find accurate information about my consumption and what I would expect to save.I especially like his review videos and will now be saving money by not purchasing Enphase Microinverters or Solar Edge Optimisers. In my case, there is little to no shade and would not benefit from the added expense of these two porducts. Money I can now put towards a larger solar panel array. So thank you very much Mark.
Patrick P.
Patrick P.
MC Electrical are without a doubt a fantastic company to deal with. Unbelievable customer service and very high quality work. If you are looking for a no fuss, high quality solar installer, don't look elsewhere. These guys are very reliable and after-sales support is stellar.
Michael R.
Michael R.
They did a amazing job recently installing our solar panels, couldn't be more happier with the outcome. Also the team of guys who came out were very professional, clean after installation, easy to communicate with and can tell they are all good friends 🙂 would definitely recommend them to others. Thank you guys!
Chene C.
Chene C.
2nd job on another site: 5 star service again. When some minor issues arose post install the MC Electrical team were very professional in dealing with the matter. A great company to deal with. I recommend them to anyone who asks.1st job years ago: Great company that prides itself on doing a good job. Very helpful post install when I had some wifi issues.
Thomas B.
Thomas B.
Finally we made the decision to get a solar system and chose MC Electrical from 3 quotes and are so glad we did. We were very apprehensive as we are not "technically minded" but they explained everything very clearly from quotation, through the installation process and how to set up the inverter. We are now looking forward to our next electricity bill ! Happy to recommend.
Sue A.
Sue A.
I was recommend by my sister to use MC Electrical to install my solar system and i was very happy from the start to the end of the job. The boys that install the system was with friendly and left my place tidy after the job was done. I highly recommend MC Electrical. To all the team at MC Electrical thank you for a great job.Belinda Smith
bls C.
bls C.
Was referred to MC by a friend who is getting work done, outstanding work, I had to get some extra switchboard work done as it was an old house. Professional and Neat installation, they have a good back-end support and set everything up for you.I have an EV and they handled putting in the charger etc, Not the cheapest but I went with them because I heard they were end too end great installers and not some cowboys, I wanted to make sure I get some back up service if anything goes wrong... which from what I have seen shouldn't. From the installers to the Office staff, big thumbs up.They also thing outside the box if there is something that needs to be changed on your installation.
Donnie M.
Donnie M.
The team at MC Solar are amazing. From getting the quote from Nicole, arranging installation with Hannah and the work done by Josh and the team was second to none. Highly recommend.
Julian J.
Julian J.
MC Electrical installed our 11kwh solar system and they did a brilliant job.The workmanship is to a very high standard and the staff are friendly and helpful. After service care is also fantastic.There was a little bit of confusion as to where exactly on the roof the panels were to be installed due to a last minute panel orientation change. I wasn't happy with the end result and MC electrical sent staff around to assess and moved a large section of panels that would have been at significant cost to them. Most companies would have walked away and it's an absolute credit to their service.Thanks MC electrical, I wouldn't look anywhere else - you get what you pay for.
Myles
Myles
after much research i chose MC electrical for our 5kw system (solar Edge and Qcell) installation 4years ago... the team has been professional prompt and courteous. one panel failed and the inverter itself failed on separate occasions- they are onsite within 48hours from first call, and replacements installed within 2 weeks even during COVID, all without me having to chased them up... I have since recommended them to many people and at least 4 household I know of chose MC Electrical and are still very happy. One of those installation had an waterproofing issue which was discovered one Saturday afternoon in the rain - someone was there within 2 hours to do a temporary fix and the owner called my friend on the same Saturday to apologies and whole situation rectified by Tuesday - Human error inevitably occurs- how you deal with it defines you - this company sets an example for others to follow!!!
aron ??? (.
aron ??? (.
MC electrical were extremely professional from start to finish. Not the cheapest option but certainly more polished than any others we have dealt with. Installation team were very polite and tidy, always turned up on time, quoting process was smooth. We had some hiccups with energex due to an energex admin error 15 years prior and they even sorted that out whilst keeping us informed every step!
Aaron C.
Aaron C.
MC Electrical were exceptional to deal with, from the first engagement over the phone, through to the initial sales consultation with Yorick which was informative, professional and consultative.They listened and provided some great advice around pros and cons of various options, their sales collateral was excellent and the actual engagement and installation process was seamless and professional.Mark has obviously built a great team culture, all of his staff are professional, courteous and obviously passionate about what they do.I did a lot of research before choosing MC Solar and I couldn’t have been happier with my decision. They are an exceptional business and I’ve already referred others to them based on my experience.Mark (Annerley, June 2023 install)13.3kw Canadian Solar panels10kw Fronius Hybrid Inverter
Mark S.
Mark S.
They've done two solar installations for me over the years and both have been exceptional. Excellent service from the office team, onsite work is professional and high quality. They have obvious pride in their work and do the little touches to make the install really seamless into the property.After sales service and support when a third party piece failed after a couple years has been 100%. Reinforced the value of getting MC to do the install. Did not hesitate to have them do our new place, and recommend them to everyone who's looking for Solar.
Brett C
Brett C
Great Service. Polite, on time and installed to a very high standard.
Josh C.
Josh C.
From the beginning the team at MC Electrical has been professional and a pleasure to deal with. After contacting over 12 different solar installers, I am very pleased with my decision to go with MC.They have kept me well informed throughout, and strived to speed up my install despite rainy conditions - and were very prompt in responding to my questions/concerns. Thanks to Yorick, David, Shane, Kendall, and Alan.Highly recommended.
Owen S.
Owen S.
The team at MC Solar & Electrical have been a joy to work with from start to finish. Highly professional, knowledgeable and friendly service. Very clean and neat installation. Nothing was to much trouble. Our install required an additional work by Energex and several additional visits to connect the service was provided promptly to ensure minimal delay.Very happy with the system and service provided.
Maggie K
Maggie K
Over 3.5 years ago MC Electrical installed a 6.54kW system (Sunpower panels & Fronius inverter with SmartMeter) at my house and it hasn’t missed a beat! I still highly recommend MC Electrical to family & friends.
Ross H.
Ross H.
Thanks for the awesome service!
Calum D
Calum D
I recently had an issue with connecting to my solar system due to a change in home internet. MC Electrical jumped onto it straight and resolved the issue within a couple of days of me reporting the issue. Their after-sales service support is second to none. A massive shout out to Dane and Brooklyn for their outstanding customer service and urgency to resolve the issue which was caused by a faulty dongle. Well done MC Electrical. You guys rock!
Raymond S.
Raymond S.
I did plenty of research before choosing an installer. MC Electrical really stood out from the pack. Now I have my new system in place and they have lived up to my expectations. Staff all knew their stuff and promptly helped me with any queries I had. I'm now a bit of a solar nerd checking my production and usage on the laptop. Brilliant.
ciaran b
ciaran b
MC Electrical would have to be the best Solar Company around from the amazing Nicole who did the quote and explained everything in detail it is obvious she is passionate about the product she sells.The admin team were amazing and kept us informed every step of the way.Alan and his team were outstanding on the day of installation working in the heat without complaint and they arrived on time and kept us informed of what was happening throughout the day.I can highly recommend this company should you be considering purchasing solar.
Annette B.
Annette B.
The team at MC Electrical were awesome from the begin to completion of the install. We highly recommend them to anyone requiring their assistance:)
Darrell B.
Darrell B.
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Mark’s Solar Battery Mini Blog

The First Home Buyer Package

5.1kW 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 percent 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 mid-winter’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 4pm and 9pm. 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 are going to set a “reserve” limit on the battery. If you set a 2kW reserve, then you will be guaranteed of at least 2kW in a blackout. However, then your solar battery will only have 3.1kWh to charge and discharge each day. 

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. This can be done 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 plan on upgrading to more than 7.7kWh of solar storage, you may be better off starting out with our next package, the more easily expandable 11kWh battery. 

The Professional Couple Package

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 is at work by day and runs 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 tool, so we do not unnecessarily oversize your battery. It is fine to undersize with BYD, as it can be retrospectively upgraded in 2.5kWh increments. If you happen to 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 

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 34150 kWh of usage. If you calculated savings on Brisbane’s historical tariffs the 11kWh BYD battery would save you a maximum of around $4800 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. 

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

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. 

Three Phase and a Baby Package

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 explained 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, 22kWh 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 30820 kWh of usage which in the past would have worked out as a maximum saving of $4300 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 saving 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 the majority of 3 phase battery solutions.  

Additionally, during a blackout you will be able to 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. 

Three Kids and a Pool Package

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 3pm 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 (eg 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. 

The Large Family with Home Office Package

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 68310 kWh of usage. If you worked out your savings on the old Brisbane tariff structure this battery would save you around $9500 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 because 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 3.68kW maximum per phase. Unlike the Sungrow RT Hybrid inverter, this Fronius/BYD combo could backup 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! 

Armageddon Prepper Package

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 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 179310 kWh 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 4pm and 9pm. 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 solar system this size should be able to keep you comfortable for many weeks without grid power. 

Max discharge rate in a blackout is a huge 10kW, or 3.68 kW per phase. The Fronius Gen24 inverter can supply 3 phase power in a blackout – so you will even be able to run three 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 kW, you have realistically maxed out your BYD solar battery capacity.

About The Tesla Powerwall 2

If you are looking to store your excess solar power for use at night, Tesla Powerwall is the real deal. It’s a beautifully designed battery, but more importantly, it’s designed to last.

The biggest issue with any battery is the heat that is caused on charge and discharge. The better the heat is managed in a battery, the longer the battery will last. At best, other solar storage batteries will use a fan to cool the batteries down. Tesla, on the other hand, use what they call “active cooling” and pump a liquid coolant around the cells that make up Powerwall. It is the active cooling that is the reason the warranty can be so generous. A full 10-year warranty with unlimited cycles. This warranty is not matched by any other battery in the industry.

It shouldn’t come as a surprise that Powerwall is so beautifully functional. The founder of Tesla, Elon Musk (amongst his many other achievements) is responsible for sending the first commercially funded vehicle to the international space station. Soon enough, his fully electric, auto-piloted, Tesla model 3 car will be commonplace on our streets. Mr Musk knows a thing or two about engineering for quality.

Powerwall 2 Benefits

Increasing self-consumption of solar power generation –The problem with solar is nighttime. It’s not worth sending your power back to the grid for as little as 6 cents only to buy it back at night for 26 cents. Powerwall solves this problem by storing excess solar electricity during the day so you can use it at night.

Load shifting – “Time-of-use” tariffs (T31 or T33) have been introduced as an option in Brisbane. On a TOU tariff, you will be charged more for power at dinnertime and less at midnight and lunchtime. If you have an off-peak tariff, we can program the Powerwall 2 to prioritise discharging during peak periods when electricity prices are higher, saving you even more.

Back-up power – When your street is in a black-out, you’ll be glad you have a Powerwall 2. A generous 13.5kW of backup power will be enough to get you by when the grid is down. Make sure a backup power option is included when you are quoted on a Powerwall 2.

powerwall 2 layout

Powerwall 2 specs:

Mounting: Wall or Floor Mounted, Indoor/Outdoor

Inverter: Fully integrated Tesla inverter

Usable Capacity: 13.5 kWh Power: 5 kW continuous, 7 kW peak Round Trip

Efficiency: 90% Operating Temperature Range: –20°C to 50°C (–4°F to 122°F)

Warranty: 10 years Dimensions: 1150 mm x 755 mm x 155 mm (45.3 in x 29.7 in x 6.1 in)”

Specifications (PDFs)

Powerwall 2

As an AC-coupled battery, Powerwall 2 is suitable both for retro-fitting to an existing solar system and installing in a new home. While Powerwall has a built-in inverter, it does not replace your existing inverter that is connected to your solar panels. Your existing solar inverter is still required to change (or invert) the power from the solar panels from DC to AC. The inverter in Powerwall 2 is designed to change the AC  from your solar inverter back to DC, so you can charge your battery.

Solar storage is primarily designed so you can use your solar power at night, but you will still be connected to the grid in case you run the Powerwall 2 flat. Backup power (in case of a blackout) should never be assumed when you are purchasing any home storage battery. If you want to use your AC-coupled Powerwall 2 during a blackout you’ll need to have a good quality recent model inverter (such as the Fronius Primo). We will also need to install a Tesla AC Backup module and reconfigure your switchboard to suit. In backup mode, the Powerwall 2 will give you a limited amount of power on chosen circuits.

Solar Self Consumption

Always Connected

Affordable

Touch Safe

Back-up Power

Flexible Installation

Grid Independence

Long Life

Weather Proof

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