For us and many of our customers the reason to have a solar storage battery is glaringly obvious. It goes way beyond having your lights on in the evening.  You become your own ‘power plant’.  It is the ultimate way to use as much of your own power as possible, achieve free electricity, a quicker ROI and potentially lucrative payments for your excess power if you choose to join a VPP.


Here is some food for thought on the three reasons people raise for not having a solar battery:

Waiting for prices to come down

Batteries are commodities.  Prices have not dropped in the last 6 years and contrary to much internet chatter, probably won’t for years to come.  In fact they have gone the complete opposite way. Some batteries have doubled in price since 2017. Even if prices did drop, waiting is costing more.  Many of our customers are saving at least $2,000/year. Just think how much the people who purchased the first batteries in Australia have saved.

Waiting for technology to improve

The breakthrough has already happened when lithium-ion batteries became widely available. This was also when the major price drop occurred. Yes, there will continue to be improvements but if you install the right battery these improvements are done for you as they become available. Most technical equipment we are installing is receiving automatic firmware upgrades from the manufacturer, it is the same for batteries.  In some cases, the firmware adds functions that weren’t available at the time of purchase.  For example, our first Tesla Powerwall 2 customers that we installed in 2017 are now enjoying three free additional functions that their battery didn’t have when they purchased it. Most batteries can now be optimised for performance enhancement and all have Apps so you can check your status and load shift.

Upfront cost of a battery

There comes a point in solar power generation when you are losing money by not having a battery. When our customers reach that point, we encourage them to purchase one.  There are batteries with different capacities and price points. No Deposit Green Loans are available. The loans are repaid from electricity savings and in many cases even with the interest you are financially better off. We crunch the numbers with you.  We advise our customers against a battery if their power generation is too low, or the solar battery they are considering is too large.

We have a large range of solar battery sizes and prices to design the best solution for you.


A battery will allow you to store the excess energy from you solar PV system instead of exporting it for a low value to the grid.

When you install a solar storage system, the energy flows around your house are controlled by your solar inverter. The job of the inverter is to keep you off the grid as much as possible, therefore reducing your electricity bill.

The solar inverter does this by supplying the house with energy firstly from the solar panels, secondly the solar battery and finally for example at night, if the battery capacity is getting low, from the grid. A solar battery can also help with EV charging, as it will increase the capacity of your renewable energy available at any given time from the home.

The inverter knows where and how much energy is needed because of an energy consumption meter we install into your switchboard. You can now monitor live data from your solar panels and observe the solar battery capacity to see if the pool pump or clothes dryer is putting you in the red, and maybe should be programmed for another time of the day. Better still, you can now connect those appliances to home automation devices that work together with the solar inverter, ensuring they won’t switch on unless there is enough excess energy being produced by the solar system. You can even turn your electric hot water tank into a solar PV powered tank that only heats with excess energy from your solar panels. What about using the excess solar power for room heating or pool heating? It’s all possible with Smart Energy Storage from Solarpro.


Battery backup is a function in the battery that supplies your home with electricity if the grid shuts down.

Our electricity grid is old. There are occasions when an overload or shortage occurs in the power lines, and the grid shuts down.

Contrary to popular belief, not all solar batteries have a backup function, but we recommend them, as they are a key benefit of solar batteries.

Installing a battery with a backup allows you to have your fridge working and your lights on when everyone else in the street is digging candles out of storage. Your children will still be able to complete their homework, you can still watch your favourite show, while the neighbourhood is on the phone to the energy company.

Some batteries only backup a small circuit and others will back up the whole house. For most people backup is important, so when purchasing a battery please make sure you not only ask, “Does it have backup” but also “How much backup capacity can I have?”

While it is rare, there have been occasions after bushfires and other disasters, when the grid was down for quite some time. If your solar battery is connected to your solar power system on the roof, and you monitor your consumption then you can stay off the grid and have your house still operating well, for a prolonged period, as long as you have a decent battery size with back up.


Through a partnership with Evergen we are able to offer our customers the opportunity to have their solar batteries optimised to achieve a significantly quicker ROI and join a VPP if desired.  Both options are free with no contracts.


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What is the peak power rating?

A battery’s peak power rating is in addition to its continuous power rating. This is the maximum power that a battery can produce in a short time. In essence, the maximum power rating measures the battery’s ability to withstand short power surges such as when equipment like a microwave draws more electricity when it starts.

What are key considerations when buying a solar storage battery?

Solarpro will take you through the best options for your needs and budget.  With solar batteries it is important to ensure the solar system and battery are the correct size for individual needs. For example , do you know what your night time electricity consumption will be in summer and in winter? We need to establish this data, before we can recommend the correct battery size for you.


The amount of cycles the battery is warrantied for is also very important because the average home battery will do at least one cycle a day. Life expectancy of the battery/warranty, what return on your investment are you getting, can you start small and grow?

We don’t always recommend backing up the whole house because there is only a limited amount of stored energy in the battery. For example, if you have a 10kWh battery and a 5kW air-conditioner on full cooling in the blackout the battery will be flat in two hours. That is assuming your battery is fully charged at the time of the black-out. So which circuits in the house are the ones that should get the back up? These are the kind of questions we’ll go through with you to find the right solar battery.

Can I charge a solar battery during a black-out?

The grid is aging and is increasingly a less stable source of energy. We don’t know what the future holds but if you are installing a home battery it seems pointless to install it without a back-up function. If you install a system with a back-up circuit you would probably also want it to charge from the solar panels during the day, to keep your home in power as long as possible. AC coupled batteries will not charge from the solar panels if the grid is out. That’s because the solar inverter will shut down to protect the linesmen.

On the other hand, the SolarEdge system with back-up connected not only charges the battery if the grid is down it also lets you use the energy the solar panels produce to power the backed-up circuit.