GCR Electrical Systems - Solar Panel Specialists

Tesla Powerwall 2

What is a Tesla Powerwall?

A Tesla Powerwall is a stationary rechargeable lithium-ion battery used for home energy storage. It stores electricity from solar energy for self-consumption, load shifting, off-the-grid use and backup power.

It is available on-demand and is self-sufficient to power your home, or can be used during the night, or can be used as back up power during power outages and emergencies. The Tesla Powerwall has a built-in battery inverter which makes it compact and easy to integrate into your home.

Tesla has currently released two models – Tesla Powerwall 1 and Tesla Powerwall 2. Larger sizes of the Powerwall are available, they are called Powerpacks.

solar battery storage

How Does It Work?

The Tesla Powerwall system is made of at least one Powerwall battery and one backup Gateway. They work together in gathering, storing, managing, and monitoring the energy levels. It is optimised for daily cyclings like load shifting and among other functions.

The Powerwall is charged through solar energy during the day. It is during the day when the solar panels are producing more electricity than what is being consumed. It then stores the solar energy into the Powerwall energy storage until it is needed for consumption. It is usually during the night when solar energy cannot be collected, that the stored energy is used. It is also used for emergencies like power outages or when the grid is offline.

Powerwall Specifications

ModelTechnologyCapacityPowerOperating TemperatureWeight
Powerwall 1DC to DC converterLithium-ion6.4 kWh2 kW continuous-20℃ – 43℃214 lb
Powerwall 2DC to AC inverterLithium-ion13.5 kWh7 kW peak; 5kW continuous-20℃ – 50℃251.3 lb

How Many Solar Panels Do You Need To Charge A Powerwall?

On average, a solar panel is about 200W – 400W. Assuming a panel of 300W rating, you will need around 18 solar panels to charge your Tesla Powerwall in a single day. This should be enough for your home backup. You can always add more panels for better storage capacity as your need for more energy storage and electricity consumption increase. 

Powerwall Installation and Design

Side-by-side Mounting

Your Tesla Powerwall can be mounted side by side on a wall or on the floor given that each Powerwall unit must have sufficient space between each other so there is enough space for electrical connections and for proper ventilation.

Front-to-back Mounting

If mounting the Powerwall front to back, it must be mounted on the floor. It must also be anchored to an adjacent wall. The Powerwall units must be joined together with the Powerwall Stack Kit hardware.

Stacking Larger Systems

For more than three Powerwalls, separate stacks of three units must be installed with each stack mounted to a wall.

In cases where a whole home back up is not possible, you can set it up so that the essential appliances get the load during a grid outage and other emergencies.

The Tesla Powerwall and backup Gateway can be installed indoors or outdoors. The Powerwall system can operate within -20to 50℃. Temperatures outside this range can cause some limitations in the charging and discharging of power. The Powerwall will protect its system from extreme weather conditions to improve battery lifespan.

Avoid installing your Powerwall in locations where it is directly exposed to sunlight and other harsh weather conditions. Here are other tips to keep your Powerwall system in tiptop shape:

  • Do not install your Powerwall in locations where it can be exposed to rain and humidity.
  • Avoid installing in flood-prone areas.
  • Do not install near water sources like faucets, sprinkler systems, and downspouts. 
  • Observe proper ventilation.
  • Keep it clear from debris.
  • Do not install in areas where it can be exposed to the cold weather.
  • Install your solar panel system where it can be directly exposed to the sun.
tesla certified installer hervey bay
tesla powerwall installer hervey bay

Getting a Tesla Powerwall System is a great investment and can help you save money in the long run. It is also a costly investment that needs to be handled by the right technicians for proper installation. Your battery system must be installed effectively and efficiently. 

GCR Electrical Systems is a Tesla Powerwall Certified Installer. This means we can help you customise your Powerwall system so you can harness the power of the sun, reduce your carbon footprint, and save money.

Tesla Powerwall Consultation

Let’s start your journey to more responsible energy consumption and a smaller electricity bill. The sun is a vast and free energy source. Get your solar battery now, give us a call!

Make a Tesla Powerwall Enquiry


Trust only the most reliable electricians on Hervey Bay – GCR Electrical Systems. Book an appointment or a consultation so we can show you how we can optimise your energy-saving potential and set you up with the best system in the market today. 

Please enter your details into the enquiry form below, and we will get back to you with some more questions or an accurate price estimate for the installation based on your energy usage and current solar capacity.

Get in contact

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Since buying a newly built house in Hervey Bay we have used grc to install our solar panels, air conditioners, to increase the number of TV connections and many more power points. We have found that not only was their service top shelf but the guys who did the work were exceptionally helpful and very polite. In summing up it is easy to see why this company is so successful when you look at the people you deal with from Gary and Christabelle down to the young fella who takes his boots off before walking in the door. I would highly recommend this company.
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Danny Meredith
2 weeks ago
I would highly recommend GCR Electrical Systems to anyone wanting solar installed. Right from first contact to installation is very professional. A very professional team that turns up when they say they would. Excellent job.
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Ken McIntosh
2 weeks ago
GCR Electric did a fantastic job replacing our solar panels. The job was extremely difficult due to high slippery roof. I would recommend GCR for any electrical job. Guys were friendly and professional.
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Philip last
2 weeks ago
We have just had a Solar System installed by GCR Electrical Systems. From the first time we met Gary he was very professional and explained all of our options to us so we could decide which System was suitable for us. The installation was very prompt and professionally done. I would recommend Gary and Christabelle to anyone who needs any electrical work done.
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Linda Borg
3 weeks ago
Really happy with the service & quality of my solar install! Great value for great product👍Have recommended GCR to anyone for all electrical & solar Requirements.
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Jay
3 weeks ago
GCR - professional, courteous and just great to deal with!! We use GCR for all our electrical needs from general electrical work, to solar and air conditioner installation. Gary is a very knowledgeable electrician, especially with regards to solar. Highly recommend.
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Jen Ferris
3 weeks ago
Gary and his team came highly recommend to us when we moved to Hervey Bay a couple of years ago, we had quite a lot of electrical jobs to be done in home and around the property, from running power to my shed which was about 30 metres from the house connect the power up to the new pool pump and water feature, installation of three split air conditioning systems and multiple Big Screen TVs around the house which they happily mounted to the walls, added extra power points where they were needed, and the big ticketed item of 36 micro inverted solar panels, we were more than impressed with Gary and his team of tradesmen, I have had to call Gary a couple of time just for advice and nothing is ever a problem for him he always responds promptly and his happy disposition makes him so very easy to deal with. Absolutely no hesitation in recommending Gary and GCR ELECTRICAL for all you electrical and solar needs.
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Andrew McKinley
3 weeks ago
We have had a 6.6 kw system with a Fronius inverter and Winaiko panels installed in Feb 2020. After tackling the minefield of solar retailers, thankfully we were recommended to talk to Gary and Christabelle. The entire process was handled professionally from the initial contact when we lived interstate through to the very tidy install and after sales service. Gary’s advice on what we needed was superb, I had so many questions! We had no idea of our power use as the house had been a rental, but early numbers show we should have reduced our bills to approx $0 a year so the system will have paid for itself in around 4 years. Could not recommend GCR enough. Thanks Guys, A and H 😁
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Helen Ison
3 weeks ago
Thanks to Garry, Christabelle and their team for installing our solar. Thanks for offering a quality product and service at a good price. We are so happy with their work and happy to recommend GCR to others. After being recommend to us by friends we could not be more happier with the outcome. If your looking for a local business that provides quality products and service make sure you get them around.
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Manda Paech
3 weeks ago
Gary, Christabelle and their team at GCR are fantastic! They did a great job with our solar installation as well as all their knowledge and advice. We are saving close to 70% on our electricity bills each year!!! Very happy customers. Would definitely recommend. 👍
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Renee Forsythe
3 weeks ago
Very happy with our experience with GCR Electrical Systems! We have had them out for a number of jobs over the last few years from updating smoke alarms, installation of fans, down lights and adding a solar system to our home. Gary is great at letting you know what would work best for your home. We also love knowing we are supporting a local family business. Highly recommend
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Emma Bennett
3 weeks ago
GCR were recommended to us by a friend after we had received 2 other quotes. Gary visited our premises advised on what was required gave us a price which was competitive from there we never hesitated.From Gary to Christabelle to the guys on site everything went smoothly and professionally from start to finish .We definitely will be referring them to family and friends.It is very pleasing to be able to refer a local company so highly.Bob and Sandra (Urangan )
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Robert Gislingham
a month ago
Gary, Christabelle and the rest of the GCR team were awesome. They were great communicators, very easy to deal with and honest about the best options for my place. Unfortunately, due to my local transformer (Kawungan) being 130% over capacity Ergon won’t pay me a feed in tariff due to their poor infrastructure and lack of planning for a decentralised energy system. This wasn’t GCR’s fault but disappointing for the community given my neighbours will also be in the same position when they go to install solar unless Ergon upgrades their infrastructure. GCR 5/5. Ergon 1/5.
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Chris Cameron
2 month ago
From the moment I phoned GCR electrical I knew I made the right choice from the quote to the end of the job was a very pleasant experience. They dismantled my old system put a new 6.6 system on my house and the team that done the work wow what a great team. I highly recommend GCR electrical. Gordon Merchant
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Gordon Merchant
6 month ago
Gary and his team were extremely professional and helpful. Price was on par with other major retailers, and the gear is the same / comparative too. I got quotes from 3 retailers, and for the gear we got GCR was the best in price.Installation - the team was on time, efficient, and thoughtful. To spend the hottest part of the day on and in the roof and then take time to explain it all afterwards was great.Highly recommend, I am normally skeptical of small businesses with low reviews, but GCR’s has definitely earned the 5 star rating on here.
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Ryan Wake
7 months ago
GCR did a great job from quote to install, definitely a recommended service
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Adrian Cox
8 months ago
great service
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steve hope
9 months ago
GCR have installed solar on both my properties as well as many smaller jobs. They are a great crew, no hesitation recommending them.
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Daddy Pig
9 months ago
GCR Electrical Systems. The initial consultation with Gary, to the completed 6.6kw Solar System by Shayton and his team installed in Eli Waters. This work was carried out in a friendly, competent and professional manner. I would not hesitate to recommend GCR to carry our any electrical work on your premises. Thank you Shayton.
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Garry Batho
10 months ago
Gary and Christabelle of GCR Electrical Systems have been professional and courteous every time I’ve had the pleasure of dealing with them. Their team of upstanding professionals carried out our recent solar install efficiently and to the highest standard. I look forward to having GCR carry out any of my electrical work in the future and I absolutely wouldn’t hesitate in recommending them to anyone looking for the best electricians on the Fraser coast. I’m an extremely happy customer.
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Douglas Kingwill
11 months ago
Recently had GCR Electrical Systems install a 6.6kw system on my property in Urraween. From quoting, booking in of the job, installation and quality of works the service was exceptional and beyond expectations.The whole operation from start to finish was professional, all of the men who installed the system were careful with my home and also took care to clean up completely after the job. Gary's advice regarding the solar was second to none and he was able to answer all of my questions. It's been a great experience knowing how everything works and functions in regard to the system installed!I wouldn't hesitate to use GSR again when needed! These guys are pros!
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Mathew Simpson
a year ago
The guys came to install Solar and a split system at our home. Very professional and promptly installed. Couldn't recommend enough.
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Ashleigh Kelly
a year ago
Excellent service, from time of quote to final especially like the way use txts. and digital sineing and sending daterr to ergon
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greg townsend
a year ago
A very efficient and prompt team who showed great skill in installing the panels on our two-storey house.
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Brian Armour
a year ago
Had no problems with the company, very friendly, I asked the questions and they answered. Very happy with the results, would recommend to every one.
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Wendy Delarue
a year ago
Gary and his team have just completed fitting a new 6KW SOLAR system and a 6.5KW MHI A/C unit to to my rental properties in Urangan. He provided very competitive pricing. Gary understands the latest electrical regulations and compliance. His workmanship is neat and top quality which is important when installing roof mounted SOLAR panels. All work was carried out in a polite professional manner, an excellent quality job without fault.
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Anthony Edwards
a year ago
GCR Electrical Systems have set the standards that others should aspire to achieve in facets of solar installations.
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Brian Andrews
a year ago
Rowan, Your team are both very efficient and courteous, upon arriving they have measured and checked the shadowing effect of the neighbouring trees and have discussed; strings for the inverter, positioning of the banks of panels, shadowing of the panels and the effect for summer and winter. Thank you and the boys for the installation, we are very happy with you and your team for a professional attitude to having the Solar Energy System installed
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Paul G
2 year ago
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