What Are The 4 Different Types Of Solar Batteries?

What Are The 4 Different Types Of Solar Batteries

Before getting a solar battery, you need to know the different types of solar batteries and their specifications. There are 4 different types of solar batteries available for you.  

Let’s get a background of solar batteries first!  

In summary, solar batteries store excess energy produced by solar panels. When energy output is low, you may use the excess energy to power your home. For example, you can use the sun’s energy on cloudy and rainy days or even after sunset.  

Using solar plus storage depends on various reasons like climate and topography to culture and way of life. Most people in Australia work during the day. Therefore, automatically they consume less energy during the daytime.  

But that’s when solar panels collect most sunlight to convert it to electricity. And that’s what demands the development of storage technology.  

Differences Between Solar Batteries and Regular Batteries

Solar batteries are specifically built to store and release renewable energy on demand. They are made with different materials than ordinary batteries to handle the slower charge/discharge rates associated with dependable solar energy sources. 

Traditional batteries have limited energy stored in a single cell, making speedy charging difficult. Solar batteries, on the other hand, have two or more cells and may provide electricity for a much longer period. 

Solar batteries can also be lead-acid, nickel-cadmium, or lithium-ion. Instead of a standard battery, a solar system will provide more energy over time and not leak heavy metals into the environment after completing its life cycle. 

Solar Battery Types

different types of solar batteries

Four primary types of batteries are used to store electricity from solar power systems. The following section summarizes commercially available technologies and information on each type. 

Lithium-ion Batteries

Maintenance of Lithium-ion batteries is relatively easy. These batteries have higher energy density than other batteries. That’s how they can store more energy in a smaller space. Li-ion batteries also have a longer life cycle. Most of the batteries are guaranteed at least ten years.  

However, one of the most significant downsides of lithium-ion batteries is their higher cost than other energy storage technologies.  

Furthermore, because of their chemistry, lithium-ion storage systems are more likely to catch fire due to a phenomenon known as thermal runaway.  

Although, if properly fitted, the chances of your battery catching fire are almost zero.  

Lithium-ion batteries are ideal for residential solar installations because they can store more energy in a smaller space and allow you to utilise more of the stored energy. 

Nickel-cadmium (Ni-Cd) Batteries

Nickel-cadmium (Ni-Cd) batteries are less popular than lead acid or lithium-ion batteries.   

These batteries first came into the market in the late 1800s. After the remodelling in the 1980s, they considerably boosted the energy they could store. Ni-Cd batteries are the most popular in the aircraft industry.  

The fundamental advantage of Ni-Cd batteries is their long life. They are also capable of operating at high temperatures. Furthermore, they are almost maintenance-free and do not require complex battery management systems. 

But Ni-Cd batteries are exceedingly poisonous because of cadmium. Consequently, cadmium use is prohibited in various countries. They are also vulnerable to the memory effect, which reduces their ability to keep a charge.  

But because of their endurance, Ni-Cd batteries are useful for large-scale applications such as utility solar energy storage.  

Flow Batteries

Flow batteries are a new technology in the energy storage industry. They contain a water-based electrolyte liquid between the battery’s two chambers or tanks.  

When charged, chemical reactions occur, allowing the energy to be stored. These batteries are becoming increasingly popular. 

Because of their larger size, they are more expensive than other batteries. The cost and size make it difficult for household use. 

One of the best features of flow batteries is their 100% depth of discharge. This means you can use all the energy in the battery without damaging its mechanism.  

Unfortunately, these are far more expensive than other types of batteries. They also have an insufficient storage capacity compared to other battery systems.  

Flow batteries serve better in large-scale systems. Because of how they work, they must be huge enough to hold any significant quantity of energy.  

Lead Acid Batteries

Lead acid batteries are the most tested and reliable technology in the solar battery industry. These deep-cycle batteries date back to the 1800s. And they’ve been able to stay because of their dependability.  

These batteries have been classified as flooded batteries and sealed batteries. Lead acid batteries are the least expensive energy storage, making them the most cost-effective. They are also trustworthy because of the long industry journey.  

To function correctly, flooded lead acid batteries require ventilation and maintenance. That increases the likelihood of the battery leaking. Also, their low depth of discharge (DoD) results in more frequent charging.  

They have a lifespan between 5 and 10 years because of their modest depth of discharge. Lead-acid batteries are ideal for off-grid solar systems and backup storage for a power outage. 

How to Choose the Best Solar Battery Type for You

The two main distinctions are the battery’s chemistry and whether it is AC or DC-coupled. Which battery is best depends on when you plan to install it, how frequently you plan to use it, and how much space you have. 

A lithium-ion battery is usually the best option for a residential solar installation. They can store more energy in less space, discharge most stored energy, and have high efficiency.  

Furthermore, because these are the most popular, many solar businesses can precisely and safely install a Li-ion solar battery.  

If you are on a tight budget, lead-acid batteries may be the ideal alternative. They have been used for decades and are cheap. 

Call Solar Emporium as your trusted solar contractor to determine which solar battery best matches your needs. Get a Free Quote Today!  

Costs of Solar Batteries

solar battery for excess energy

The type and size of the battery selected determine the cost of a solar battery or battery system. Lead-acid batteries have a lower initial price to the consumer than lithium-ion batteries.  

However, investing in a lithium-ion battery may save money in the long run, depending on how the batteries are used.  

Check out Solar Emporium’s lucrative solar storage packages! 

Depending on size and power, a single lead-acid battery can cost between $200 and $800. Although to keep a household fully powered, it may require multiple lead-acid batteries.  

On the other hand, a household lithium-ion solar battery system with installation costs between $7,000 and $14,000. 

Nickel-cadmium and flow battery prices vary depending on the size and scale of the installation. Because of the expense, durability, size, and stability in extreme temperatures, they are sometimes utilised in residential houses. But these are better suited for commercial and industrial environments. 

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How Long do Lithium Solar Batteries Last

how long do lithium solar batteries last
Solar batteries are the most valuable and rewarding addition to your solar setup. Among many kinds of solar batteries available in the market, like lead-acid and flow batteries, Lithium-ion batteries are considered to be the superior choice. The return on investment in Li-ion batteries is promising, which is why many solar battery companies and EV companies are gravitating towards it.
Now the question is, how long do lithium solar batteries last? Generally, Li-ion batteries are capable of providing you with sufficient backup for 5 to 15 years, depending on the brand, build, and how you have been treating the battery. So, it’s safe to assume once you invest in high-quality solar batteries, you can expect them to be by your side for a minimum of 10 to 12 years on average.
If you are wondering about battery backup in case of a power outage or a blackout of several days, then there are many attributes to take into account in this instance. How big the battery is and what you plan to run using the battery is what will shape the figure in hours of battery backup.

Brief Discussion on How Li-ion Batteries Work

For your ease of understanding, let us discuss the battery on a cellular level in its simplest form. So, in its simplest form, Li-ion battery, the anode (negative side) is made out of graphite, and the cathode (positive side) is made of lithium metal oxide, which is the essence of this battery. Both the anode and cathode are submerged in an electrolyte which in this case is lithium salt. Also, there is a separator in between, which helps in the exchange of electrons.
how long do solar batteries last
While the entire system is up and running, positive ions of lithium flow through the electrolyte to the negative side of the system to the anode to form a bond with the carbon of that side. While this is happening, an electron gets released in the cathode side as a reaction to what’s happening as a whole. So, the lithium metal oxide is now a lithium-ion, metal oxide, and a stray electron. This is what happens at the cellular level when you are charging the lithium cell.
Now let’s see what happens when you discharge electricity from it, AKA using the battery. At this stage, the electron flows in the opposite direction, which is basically what electricity is. A load is connected at this point of discharge, and the flow of electrons keeps the battery working.
Li-ion batteries are generally considered better despite being a tad more expensive than others because they are-
  • Smaller in size
  • Easy to maintain
  • Has a greater DOD (Depth of Discharge)
  • Offers more generic cycles to go through
  • Has a longer lifespan
  • Capable of fast charging

How Long Do Lithium Battery Last in a Blackout – Solar Battery Backup

On average, every Australian household that opts for a solar battery goes for no less than a 10kW battery backup option, which can provide your family with sufficient electricity for an entire day during a power outage. Here is a breakdown of the exact kilowatt-hour usage of a lithium solar battery if used strategically throughout a 24 hours span. Click here.
But if you opt for a battery even bigger, you can go for longer without a grid connection. Off grid homes are the epitome of an example of how a battery backup, along with solar panels, works in synchronization to run a household without any utility grid connection. The battery is charging as you use it or not to form a seamless flow of electricity in such cases.

Factors that Influence Solar Battery Lifespan – Dod

solar battery lifespan
Every battery on the market has a Dod (Depth of Discharge) percentage that the manufacturer advises. Dod is the maximum amount of solar battery that can be used before it has to be recharged. The more Dod, the longer you can go without charging the battery. If your 10kW solar battery, for instance, has a 95% Dod, you may consume around 9.5kW of the electricity before plugging it back in.
You can use the entire battery at once, but you must follow the manufacturer’s instructions to keep it in excellent condition and extend its lifespan. Otherwise, this costly investment won’t provide the greatest results possible.
More and more individuals are converting to home batteries as technology improves because they are capable of storing excess energy that is produced by fully green sources like solar panels, hydropower, and wind. Being self-sufficient with a home battery is the best approach to eliminating your carbon footprint and becoming totally energy-independent.
By selecting the get help tab down below, you can schedule a free consultation appointment with one of our solar professionals to learn more about your energy usage pattern and how you can also become energy independent.

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How Long Do Solar Batteries Last | Solar Battery Lifespan

How Long Do Solar Batteries Last
Due to the advancements of recent government rebates and many energy-saving projects, adapting to the renewable energy lifestyle is becoming the new normal. In that train of thought comes the idea of getting solar batteries. Solar batteries are the single most awesome addition to your rooftop solar that can double the benefits of having solar overnight!
Now that I have made it clear that getting solar batteries is something you should be considering, there are other attributes of a battery that you should know. Not all solar batteries will serve you equally, and even getting solar batteries now will not make sense for every household. So, before making the commitment getting to know about them should be your no.1 priority.

How Solar Batteries Work

When the sunlight hits the silicone-made solar panels, they start making electricity from direct sunlight and pass that through a solar inverter to transform the generated electricity into a usable form. Strictly technically speaking, there is no true end or pause of the electricity generation of PV panels until they hit their expiry date, which is like 25 years and 30 for some brands.
solar battery australia
Without solar batteries, the additional electricity generated by the panels will be exported to the grid, against which you will get Feed-in-tariff. Fit rates are generally not very charming. In that case, solar batteries are added to the solar system. They store that surplus of power for you to use when the peak demand hours charge a lot to import power from the grid. Saves you a lot of money in comparison to what you will make through Fit.
Getting batteries also aligns with the government’s recently developed Peak Demand Reduction Scheme (PDRS), to be inaugurated on 1st November. PDRS focuses on reducing energy usage at the peak hours of the day by incentivizing the installation of efficient gadgets and more. You can do your part by using energy-efficient gadgets and relying on battery units as opposed to the utility grid for a change. This change saves you money and saves mother nature in the long run, too; it’s a win-win situation for everyone.

How Long Do Solar Batteries Last

After purchase, a high-quality solar battery system should provide you with support for the next 15 years. However, there are batteries on the market that have an 8-to-10-year lifespan but are less expensive. To be honest, there is no reason to settle if you are considering investing in solar batteries in the first place. Because it is an investment, if you combine it with a high-quality solar system, clearly, it can give you free energy for as long as it lasts.
There are also many types of solar batteries which serve you at different capacities and run for a different number of years. The most popular types of solar batteries are lithium-ion batteries and led acid batteries.

Lithium-Ion Battery

lithium-ion battery technology is preferred by battery companies because of its greater DoD (Depth of Discharge), dependability, capacity to store more energy for a longer period of time, and smaller size. However, lithium-ion batteries are more costly than lead-acid batteries owing to their advantages.

Lead-Acid Battery

Since they have been available for so long, lead-acid batteries—which employ the same technology as the majority of automobile batteries—have been extensively used as in-home energy storage units for off the grid power choices. Although they are still available on the market at reasonable costs, their popularity is dwindling because of their poor DoD and short lifetime.

Solar Battery Cost- Would This Break My Bank?

Each kWh of solar battery storage used to cost between $3000 and $3600 for the battery alone, without including installation fees. For each kWh of solar battery storage, you may currently expect to pay between $1200 and $1400. Prices have dropped by almost 52%, and things can only get better from here.
Does this mean solar batteries are now affordable? Not really, but the benefits of having a battery backup system more than outweigh the expense.
However, just like any other category, there are also luxury brands of solar batteries. But in this aspect, these brands tend to provide and outdo the competitors in many cases which come, you guessed it, at a price. For example, Tesla batteries. Tesla’s solar battery cost can easily defeat others in the category in terms of being expensive.
Additionally, there are several key factors to consider to make when purchasing solar batteries, including the battery’s kind, compatibility with your solar panel system, brand, and installation company.
Most of them will have an impact on the price range.

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When Does the Government Solar Rebate End | Update 2022

When Does the Government Solar Rebate End
Under the federal government’s Renewable Energy Target (RET), there are separate schemes to facilitate the solar rebate in order to encourage  consumers into getting a solar panel system. There are federal as well as state incentives in place to encourage the green energy source usage in people’s lives. This way, Australia can transition into becoming one of the leading countries to emit less and less Green House Gases (GHG) in the upcoming years. The government does not plan on continuing the scheme forever. So, when does the government solar rebate end? All the schemes under the RET will be put to an end by the year 2030. So, as time passes, your chances of claiming the rebate reduce bit by bit.
government solar rebate
There are many aspects of the rebate and adjacent facts about it. Under the RET, there are mainly two schemes that provide small-scale solar owners and large-scale solar owners with a financial incentive that helps keep the prices down.
Keep on reading to know more about the government rebate.

Renewable Energy Target

Australia’s federal government established the Renewable Energy Target (RET) in 2008. Two programs under the RET make it easier for owners of small- and large-scale systems to get Large-scale Generation Certificates (LGCs) and Small-scale Technology Certificates (STCs), respectively.
These certificates each represent a megawatt-hour of power that was conserved via the use of renewable energy sources. Prices for LGCs and STCs are determined by supply and demand for the certificates rather than by any one body.

What is STC?

STCs are available to households and small enterprises who have or need solar panel systems with a capacity of 100KW or less. Additionally, the yearly electrical products cannot be no more than 250kW. Within a year of installation, certificates must be generated.
Keep in mind that STCs may only be produced by installers who have been certified by the Clean Energy Council (CEC). Additionally, all three components—panels, inverter, and battery—must be included on the CEC list of permitted parts. They won’t be qualified for the program if they don’t.
solar rebate
With this plan in place, the Australian government is attempting to shift some of the burdens away from non-renewable energy sources, which is the main culprit behind increasing greenhouse gas emissions.

Deeming Period

In the year 2030, the government intends to abolish the initiative. The financial incentives or the STCs formation permit rate gradually but certainly decrease with each passing year. The deeming period denotes this timeline.
Essentially, it’s the number that tells you how many years are left before the government rebates end, and it’s used to calculate the number of certificates (STCs) to be generated by the approved installers. Simply put, on that premise, a preliminary estimate of STC is produced.
The first calculation of the number of certificates that may be produced is done by adding the estimated amount of MWh of energy that can be obtained from renewable sources up until the year 2030.
But this figure is impacted by the diminishing deeming period, so the earlier one installs an energy-saving technology, the greater the financial incentives one may receive, and vice versa.
small scale technology certificate

State Solar Rebate

Apart from the federal solar incentives, there are also state solar rebates for specific states that make the transition to the greener source even smoother.
The Victorian government is offering up to a $1400 rebate for PV installation to its residents. With that, there is also an option to claim an interest-free loan of the same amount if the residents are proven to be eligible for such a scheme. A set number of rebates are allocated with each release, and currently, there are 9705 numbers of rebates waiting to be claimed by Victorian residents.
Know more about the Victorian state solar rebate here.
There is also a state rebate scheme going on for the residents of NSW. This initiative offers free 3kWh solar energy systems to low-income homes in a few NSW areas. If you reside in one of the Central Coast, North Coast, South Sydney, Shoalhaven Illawarra, or South Coast low-income household rebate regions, you may be eligible for a free solar system from the NSW government.
However, keep in mind that in order to use the scheme, people must own their property and be content enough to give up their low-income household rebate for 10 years.
Know more about the NSW state solar rebate here.

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Can I Add a Battery to My Solar System

Can I Add a Battery to My Solar System
With a vast majority of the population opting to go solar to retaliate against the increasing power bills and grabbing the opportunity of declining solar battery prices, it’s safe to say we are heading in the right direction. Many of us already have rooftop solar, and in an attempt to get the most out of the solar system, adding a solar battery should be on top of our priority list. Kudos to you, as you are already thinking about it, judging from the fact you are here in the first place.
So, the topic of discussion is, can I add a battery to my solar system if I wish to? The short and simple answer to that is yes, yes, you can. However, there are some things that you need to double-check before you think about it. Although solar battery prices are indeed falling, they can’t just be labeled as something cheap, not yet.
Before we jump to that, it’s essential to know the basics of how solar battery works.
adding solar battery with panels

How Solar Battery Works?

There are two types of solar battery storage systems to consider when on the topic. One is AC coupled, and the other is DC coupled solar battery.
In an AC-coupled system, solar panels produce DC power, which is then converted into AC electricity via a solar inverter. Your house appliances may then get this AC power, or it may go to another inverter, which will convert it back to DC so that it may be stored in a battery system. Any power that is stored in a battery system for AC-coupled systems must be reversed three times before it can be used back in the house.
On the other hand-
A DC-coupled system means that there is no inversion of solar power from DC to AC and back before the electricity is stored in the battery. Instead, DC solar electricity flows from solar panels to a charge controller that immediately feeds into a battery system. Any solar-generated electricity will only undergo one inversion (from DC to AC), either when it travels from batteries to your home’s electrical system or out to the power grid. With a DC-coupled system, your house is inevitably dependent on the battery for its primary source of energy if not connected to the grid.
Besides that, built-wise, there once again are several types of batteries available in the market. For instance, nickel-cadmium batteries, flow batteries, lithium-ion batteries, and lead-acid batteries. Because of their low cost, lead acid batteries are by far the most common option among all of these battery kinds. However, they need regular maintenance and are vulnerable to damage if not handled carefully. Lithium-ion batteries, on the other hand, are also growing in popularity lately.
Now that you are familiar with the basics of solar batteries, here is a list of things to check before you can add a battery to your solar system-

Existing Solar Inverter Compatibility

As discussed above, there are two types of solar battery storage systems which work in two different ways. Just like the batteries, there are different types of inverters that do the energy conversion of solar-generated DC electricity differently.
Your existing solar inverter can be a hybrid inverter or a standard inverter. In case you have a standard inverter, you are going to have to go through a bit more trouble. I will explain everything; bear with me.
DC VS AC coupled solar battery
You see, a standard inverter is only capable of converting DC to AC for the house to use. So, when you have a standard inverter, there are about two ways you can go by. The first option is to get rid of this system and add a charge controller, which can regulate the solar energy into going to the battery first, and tie it with a battery inverter that will supply electricity to your house. Needless to say, this is quite the expensive route to take as charge controllers that are able to take such a huge load are not cheap.
The second route to take, in case you have a standard inverter, is to opt for an AC-coupled system. This way, your system remains the same; it just gets an addition of a hybrid inverter with batteries. In this scenario, when the grid is down, the hybrid inverter steps up to keep the entire thing up and going. Without the hybrid inverter, your solar system will shut down if the grid goes down, but with the addition of the hybrid inverter, the sine waves produced by it trigger the standard inverter to keep on generating electricity, which then gets stored in the battery bank. Also used in the house.
Then comes the situation where you have a hybrid inverter. In this case, adding the battery bank will be a breeze as this one is equipped to convert both ways. Thus, saving you the hassle of getting to figure out the whole thing once again.
However, there still remains the question of how much load the inverter is able to handle and so many other things. For all these calculations and figuring out, I believe it’s best to just leave things to the professionals.

Budget

With a minimum value, you can get yourself a working battery or an amazing one. You have to figure out what your needs are and take into consideration your area, your future demands, etc.; with the calculation of everything, you have to map out a budget for the solar battery. There are many companies, including us, who can sort you out a financial plan; also, there are government rebates to help you become energy independent.

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Should I Get Solar Battery for My Solar Panel?

should i get solar batteries for my solar panel
One out of four households in Australia has rooftop solar panels in today’s date. Can you guess why people accepted this change with open arms? To get away from the rising electric bills, of course. Also, with the prevalence of solar rebates at the federal and state level altogether, it made perfect sense for you and I to go solar. Because who wouldn’t like the opportunity to save money while saving nature at the same time, right?
Apart from all those good things, do you know what can make this investment even more fruitful? Adding a solar battery storage system to the whole deal. “But aren’t solar batteries expensive?” this is exactly what you might be thinking to yourself. Well, that is not incorrect, but aren’t cars expensive? What about a house? But we still invest in those assets, don’t we? Just like that, getting a solar battery is also an investment that goes a long way if you make the right calls at the right time.
It sounds a bit confusing with just that much information so let me help you out by answering your question, ‘should I get solar battery for my solar panel’ a bit elaborately.

Your Household Electricity Needs

The first step to figuring out if you should go for a solar battery is to know how much electricity you use on a regular day. Calculating that is simple; all you have to do is take a look at your electric bill copy. There you can find a breakdown of your average use in Kilowatts.
solar battery
For an average household of two people, the total consumption of electricity quarterly can be around 950kWh to 1000kWh, with 10kWh to 15kWh daily peak usage. This comes down significantly with the addition of solar panels on the roof and totally disappears with the addition of solar batteries. Since the batteries store electricity for you to use at your convenience, you will be using what you generate through the panels, scratching the grid altogether, and paying zero electric bills.
There is so much more to figure out in this scenario, but with the right assessment and experts working on your property, it’s totally plausible.

How Much Electricity Do My Panels Generate?

Assuming you already have rooftop solar panels, how much electricity they generate is a huge factor to consider. With a smaller solar system that barely fulfills your needs during the day, adding a battery will not be the brightest idea. A battery should be added to such PV systems that are capable of yielding a significant amount of energy.
However, there is an exception to the scenario.
If your area is prone to blackouts, or you get charged a stupidly high rate for energy bills, getting solar batteries in such cases is the optimum thing to do.
Also, if there is room for expansion of your solar array in case you have a smaller system, it’s a smart move if you do so. Because in the end, solar panels are the best way to generate electricity rather than depending on the grid.

When Do I Need Electricity the Most?

Let’s say you do have a smaller solar panel system. As we know, solar panels are able to generate the most electricity during peak hours, which are around 10 am to 3 pm. If you are not around the house at that time, which most people usually aren’t because of work or school, the entire amount of energy generated by even that small system of yours will be exported to the grid. Earning you Feed-it-tariff credits in the process, if applicable, but the credit you get in return is quite insignificant judging today’s market.
What can you do in this case? Get solar batteries so you can store the electricity produced by your panels in the peak solar hours. This way, you will have electricity stored in the batteries to use when the price of grid energy is high. Essentially using free energy when grid users are paying high prices.
solar battery cost

Price of Solar Battery

Recent decreases in solar battery prices are the result of major technological advancements and the availability of resources. Naturally, that doesn’t imply they are suddenly inexpensive, but the decrease is astonishing. A kWh of solar battery storage used to cost anywhere between $3000 and $3600 only for the battery, without including installation. For each kWh of solar battery storage, you can now anticipate paying between $1200 and $1400. It will only get better from here on out—and that’s a price reduction of about 52%.

How Long Do Solar Batteries Last?

A quality solar battery system should back you up for the upcoming 15 years to come after purchasing. But there are also batteries available in the market which last 8 to 10 years, but they cost lesser in comparison. To tell you the truth, if you are planning to invest in solar batteries, there is no need to settle for less; as I already told you, it’s an investment. An investment that can provide you with free energy for as long as it last, obviously, if you pair it up with a quality solar system.
Additionally, by switching to green energy, you not only save a ton of money but also drastically lower your carbon footprint and inspire others to do the same. It’s a crucial measure to protect the next generation from the dramatic and catastrophic effects of global warming.

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Should I Get a Solar Battery Storage System

should i get a solar battery storage system
Frequent power outages, unreliable grid connection, low feed-in-tariff, and high electric bills, can you relate to these frustrating issues? If yes, then without a doubt, a solar battery storage system is the solution to your problems. Besides, if you have an outstanding solar panel system yielding a ton of energy, the surplus of which you are exporting to the grid in exchange for a low FiT, you can surely go for a solar battery.
In short, to answer your question, should I get a solar battery storage system the answer is yes, for the most part. However, in certain circumstances, it’s also not necessary to go for a battery; all of those, along with the pros and cons of solar batteries, are discussed below.

What Am I Missing Out on Without Solar Batteries?

To tell you the truth, you are missing out on the best bit of having solar panels. Renewable sources of energy like solar, hydro, and wind makes us feel empowered with their ability to exterminate our carbon footprint, not to mention the low electricity bill. Along with those good things, we also have the opportunity to sustain on our own, at least for power which is a massive deal. But without batteries, it’s next to impossible to become energy independent.
solar battery storage system
Without a Battery storage system, you are missing out on-

Free Power Backup on Demand

Solar batteries store the excess amount of energy generated by your solar panels to be used at a later time. But in case of irregular cases like your solar panels struggling to generate enough energy, you can use the battery at will. Also, when you conserve excess solar energy, you can use it at night when the electricity prices are higher because of high demand.

Being Self Dependent

You have gone through the trouble of installing solar panels on your rooftop. The goal is to generate as much energy as possible through this source to not stay dependent on the grid. When your panels are able to satisfy your needs and do more, it gives you the perfect opportunity to ditch the grid for good. Making you self-sustained and worry-free.

What Size Battery Do I Need?

I believe you recognize by now how solar batteries can be amazing at serving us with more power independency. So, that brings us to the question of how big of a battery would suffice your needs. The answer to this question solely depends on you and your family’s needs. There is no one-size battery that will make financial or functional sense for everyone.
Nevertheless, if you have an average family of four with no exceptional power demands, you may get by with a 10kWh to 12kWh battery bank as a ready-to-roll backup system. I repeat, this is just an estimation with no knowledge of your power needs; selecting a battery is highly subjective to the household in question.
With that being said, you can get a good idea of how much power you use on average by analyzing your electric bill copy. Also, keeping track of what appliances you use the most and what requires the most power will help you. I would suggest leaving that to the professionals as the chances of getting the wrong numbers are high with a do-it-yourself approach, and solar batteries are just too expensive to make an error.
solar battery price

How Much Do Solar Batteries Cost?

Previously, you would have to pay between $3000 and $3600 for the battery alone, plus the cost of installation, for every kWh of solar battery storage. Currently, you may anticipate paying between $1200 and $1400 for each kWh of solar battery storage. That is a price reduction of approximately 52%, and things will only get better from here.
Does that imply solar batteries are cheap now? Not really, but the cost is well justified by the pros of having a battery storage system.
Also, while paying for solar batteries, you have to counter in many other factors like the type of battery, your solar panel system configurations and compatibility, brand, and installation partner. These will influence the price range for the most part. Learn more about the cost of solar batteries here.

The Pros and Cons of Solar Battery at a Glance

I won’t blame you if you feel a little overwhelmed about making a decision because I understand it’s a tough one. So, here is a list of pros and cons of having a solar battery to help you in the decision-making process-

Pros

  • Solar batteries help you become self-sustaining
  • You don’t have to care about power outages anymore
  • In the event of any natural disaster, you will still have a power source
  • Battery prices are dropping significantly as we speak
  • During peak hours, grid electricity prices increase due to high demand; you can avoid paying a high price and use your battery. It’s essentially free energy as solar generates energy from the sun.
  • Reduced carbon footprint as the battery stores energy from a renewable source.

Cons

  • Batteries can be expensive, and that is the only weakness I can point out. Nonetheless, any investment comes at a price, and it depends on you whether or not that investment makes sense for you.
In conclusion, if you should get a solar battery storage system depends on your energy usage pattern, your living condition, your area etc. But as a general query, getting solar batteries to tie with your solar panel system is the best approach in your energy independence journey.

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How Much are Solar Batteries | Cost of Battery

how much are solar batteries
Adopting renewable energy sources like solar, wind, hydro, etc., as the primary energy feeder for a household is the best possible way to become carbon-free. However, if you want to completely eliminate your dependency on the grid and receive zero electric bills at the month’s end, solar batteries are the way to go.
Solar batteries are amazing; there is no room for doubt. Although, the pros of having a battery attached to your solar system is a clear win. Still, the question remains, how much are solar batteries? Here’s a brief discussion.

Price Range of Solar Batteries

Prices of solar batteries have dropped down recently due to significant improvements in technology and the availability of resources. Of course, that doesn’t mean they are cheap now, but the drop is astounding. Previously for each kWh of solar battery storage, you would have to pay somewhere around $3000 to $3600 for battery only plus the installation cost. Now, you can expect to pay about $1200 to $1400 for each kWh storage of solar battery. That’s almost a 52% price drop, and it will only get better from here onwards.
solar battery price
To make more sense out of those numbers, imagine a typical family of four. With no extraordinary power usage on average, they would require about 38kW to 40kW to live comfortably. Assuming they are not connected to the grid and have solar as their sole energy source, the majority of that power need will be satisfied with direct solar power. They will only require extra when the sun doesn’t shine, and that can be compensated with solar batteries. That power need can be assumed to be around 12kWh to 15kWh. Note that I am being generous with numbers here; you might not even need this much for a family of four.
Assuming that the family is in need of a 12kWh battery depending on power, that will cost them around 12kWh*$1200= $14,400 to have solar batteries tied with the solar system. Yes, by no means is that a small number, but you have to consider its advantages. Also, don’t forget it is an investment to yield benefits for the upcoming ten years at a minimum with zero electric bills. Now that sounds like a fantastic deal, doesn’t it?

What Influences Solar Battery Cost?

Type of Battery
Many types of solar batteries are available for grabs in the Australian market as we speak. Different battery types come with different pros and cons. However, there are two most popular types used for solar energy storage, which are-
  • Lead-acid battery
  • Lithium-ion battery
Lead acid batteries are cheaper in comparison and are the most popular type of solar battery at the moment. However, they are not the most efficient option out there, as they require regular maintenance. On the other hand, Li-ion batteries are seemingly better alternatives to lead-acid ones as they require little to no maintenance, charge faster, offers a greater DOD (Depth of Discharge), and so much more. But it’s to be noted that li-ion batteries cost more than lead acid batteries.
Installation
Cost is also dependent on installation as that is also a factor that adds more to the initial number. A certified and insured solar installer should oversee the installation of solar batteries, which is non-negotiable in order to achieve power independency. Making modifications to your current solar power system yourself can jeopardize the battery, and the system, so a do-it-yourself approach is discouraged by solar emporium unless you are an approved installer yourself, of course.
With the installation process comes labor cost, and this is also a factor that varies from person to person, depending on the installation site and the work time.
solar battery cost
Size
Of course, the size of the battery hugely impacts the cost. If you want more hours of battery backup, the battery will be more expensive, and vice versa.
Brand
Certain brands are expected to cost more because of the superior quality offered by them, along with the faith that comes with those brand names. For example, a Tesla powerwall will definitely cost you more than any other battery brand for its brand value, and outstanding quality claimed by the company. Other renowned brands also follow the same agenda.
Inverter Type
If you already have a solar system installed on your rooftop, you definitely also have an inverter. Depending on the type of inverter, the cost of the battery may increase as a whole. If you do not have a battery-ready hybrid inverter, your cost of having a battery will significantly go up as you are going to have to get a brand-new inverter with the system.
But that is not the only way around, you may get away with additional wiring and small changes around the solar system, but that is strongly subjective to your inverter type.
So, those are the factors that influence the cost of the battery. Please note that along with these factors, the numbers may fluctuate depending on your needs and your house. To be precise in this journey, and save money in the long run, it’s easier and best to consult with an expert in the field. Also, if you want to claim government rebates, all of your components and installation partners need to be CEC (Clean Energy Council) approved.

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How Long Do Home Batteries Last

How long do home batteries last
Home solar batteries are the only way for anyone to become completely energy independent. In a circumstance where you are connected to the grid, you don’t have the authority to dictate your power usage and may lose access to it due to issues that are out of your control. A solar battery grants you complete control of your power usage, making you self-reliant.
And, of course, home solar batteries are an absolute necessity for an off the grid household.
With that comes the question, how long do home batteries last? Do solar batteries last as long as solar panels? Let’s find out.

Home Solar Battery Lifespan

On average solar batteries have a lifespan of 5 to 20 years. Although that depends on many external factors like the type of battery, full cycle usage, dependability, warranty and more. But you can expect your home solar battery if installed correctly and in good condition to serve you for at least 5 to 20 years.
home solar batteries
Within the lifespan of the battery, there are two stages of that in which the battery backup capacity is divided. Which are-
Useful Life of Battery- A solar battery has a limited number of uses before reaching the end of its “useful life.” When a battery falls short of meeting around 60% of its nominal storage capacity, it is generally considered to have reached the end of its usable life. At lower percentages, the battery could still be able to work, but it probably won’t supply enough charge to fulfil your needs.
Warranty Period for the Battery- Your solar battery’s warranty specifies how long it will be operating properly under typical circumstances. The warranty length can range from 10 to 20 years, depending on the brand and model of solar battery you buy, with the majority being set at 10 years from the date of installation. A solar battery’s warranty typically ends when it fulfills one of three criteria.
  • Expiration of the warranty
  • Reached capacity (throughput)
  • Number of allocated cycles reached

Factors that Effect Solar Battery Lifespan

Battery type- There are many battery types available for solar energy storage. For example, Lead-acid batteries, lithium-ion batteries, flow batteries, nickel-cadmium batteries etc. Among all these battery types, lead acid batteries are by far the most popular choice because of their economical price point; however, they require regular maintenance and are prone to damage if not handled with care. On the other hand, lithium-ion batteries are also becoming popular recently.
Because Li-ion batteries are-
  • Smaller in size
  • Easy to maintain
  • Has a greater DOD (Depth of Discharge)
  • Offers more generic cycles to go through
  • Has a longer lifespan
  • Capable of fast charging
Despite the performance difference, lead acid batteries are still the most popular choice at the moment. But in future, the scenario might be in favor of the Li-ion batteries as there are many car manufacturing companies adopting to this change for the better. And the solar industry is also gravitating toward the shift because of the increased benefits.
Maintenance- It’s important to check up on your home solar batteries once in a while to make sure they are operating at their peak performance. Some type of batteries requires less assistance than others.
Full cycle number– When your home solar battery is fully charged once and drained entirely is considered one entire cycle. How many times one has repeated this cycle is a determining factor of how long will the battery last. Depending on whether you live on or off the grid, the number of cycles a day will drastically change.
Heavy usage Vs light usage- How many cycles you get from your battery will depend on your usage, and that can affect the battery life, as previously mentioned. So, if you decide to run a few appliances and light up your house using the battery, you expect to run through fewer full cycles per day. On the other hand, if you are a heavy user and run power-hungry appliances on the battery, you will run through more cycles, and your battery lifespan may decrease.
home battery lifespan
Home batteries are getting adapted by more and more people as the days go by. As they are capable of storing the surplus of energy generated by the completely green source, e.g., solar arrays, hydropower and wind. In order to become completely energy independent and to remove your carbon footprint, becoming self-sufficient with a home battery is the way to go.
Learn more about your energy pattern and how you also can become energy independent with one of our solar experts and claim a free consultation session today by clicking the get help button down below.

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Are Solar Batteries Worth it in 2023?

Are solar batteries worth it in 2023

Back in 2010, Australia saw a surge in solar battery installations all around the country. Since then, about 3 million homes have enjoyed the perks of rooftop solar, including lower electricity bills than those with just a grid connection. 

To paint a clearer picture, it is estimated that in NSW, per kilowatt of energy generated by solar panels saves you about $400 annually. You have a standard 6.6kW solar system on your rooftop, and your savings for the said year will be about $2640, which is $660 in a quarter!  

There is a way in which you could get even more out of your solar panel system; what might that be? Adding a solar battery system is the answer.

However, batteries for solar systems are by no means a small investment, so the question remains: are solar batteries worth it in 2023 as a homeowner? We will find out soon enough. But first, let’s get to know some basics about solar batteries. 

Types of Solar Batteries

Solar batteries, also called solar energy storage systems, play a crucial role in solar power setups by storing surplus energy generated during sunny periods for later use, such as during nights or overcast days.

These batteries come in various types, each with distinct characteristics and advantages.

Lead-acid batteries, including Flooded Lead-Acid (FLA) and Valve-Regulated Lead-Acid (VRLA) options, offer durability and cost-effectiveness, with VRLA batteries like Absorbent Glass Mat (AGM) and Gel batteries being maintenance-free.

Lithium-ion batteries, such as Lithium Iron Phosphate (LiFePO4), Lithium Nickel Cobalt Manganese Oxide (NMC), and Lithium Nickel Cobalt Aluminium Oxide (NCA), provide high energy density, extended lifespan, and enhanced safety.

Flow Batteries, represented by Vanadium Flow Batteries, offer a liquid electrolyte and are known for their extended cycle life and scalable capacity.

Saltwater Batteries, specifically Sodium-Ion Batteries, are environmentally friendly and potentially cost-effective. Nickel-iron or Edison batteries are durable but have lower energy density. Hybrid Batteries combine different technologies for optimised performance.

Choosing the correct solar battery involves cost, space, maintenance, and intended application, while ongoing advancements in battery technology may introduce newer options.

Reasons Why You Should Get Solar Batteries

solar battery system

Solar battery prices are not low, but the payback period goes down with the price hike of energy in Australia every day, and due to the current economic environment, I can only see energy prices rise.

According to the Australian Energy Market Operator (AEMO), the wholesale cost of power in the National Electricity Market (NEM) jumped by 141 per cent in the first three months of 2022 compared to the same quarter last year.

That said, storing the surplus of energy generated by your solar panels sounds like a sound investment, doesn’t it? 

Here are some more reasons- 

End of Net Metering in Australia

Net metering is a system that allows you to send the excess power generated by your solar panels to the grid and get a portion of the exact amount back on demand.

People were utilising the grid practically as a storage facility when the net metering system was still in place, but that luxury is no longer available.

Net metering was available until April 2020 in the Northern Territory; however, the benefit is no longer at one’s disposal for solar systems constructed after that date.

Essentially, with the end of net metering, you no longer have the freedom to get a one-to-one net metering service (a kW received per kW given). 

That doesn’t mean you don’t have other means to store the energy in the grid; you do; however, that is not as beneficial as net metering and not certainly as profitable as having your solar battery. 

Solar panels can generate a different amount of energy all day, as the sun doesn’t shine as bright from sunrise to sunset.

The maximum amount of electricity generated by the solar panels is between 12 and 3 pm. An average Australian household only consumes a little electricity during that time since they are the majority at work.  

Studies have shown that, with the surge of electric prices off the grid, it needs to make more financial sense to store the excess energy in the grid; instead, having your solar battery and using it on demand will be much more profitable in 2023. 

Electricity Prices are Higher at Night

As a storage unit does require significant investment, you decided to export the surplus of electricity to the grid.

But, keeping in mind that an average household requires more energy at night than in the day, you will be paying more to buy back that amount of electricity you exported at night. 

So, it’s evident that storing the surplus in a solar battery makes more sense than repurchasing it at a higher price point.

Grid Outages

There are occasions in which people suffer from grid outages. It can be during a scheduled check-up of the grid, a devastating storm, or just about any other reason. It’s more common than you would think. In those cases, a solar battery can be your resolve. 

We are positive you would prefer to avoid coming home to a fridge full of rotten food. To have an uninterrupted supply of energy that you have all the control over, having a battery storage unit makes perfect sense. 

Yes, of course, you could opt for a backup generator, but they are noisy, and it defeats the purpose of having installed solar on your rooftop in the first place. It runs on diesel, a non-renewable energy source contributing to carbon emissions.  

Are Solar Batteries Worth It?

home battery storage

It makes sense for a large energy user to opt for solar batteries. They are worth the price, and here is why- 

Solar battery cost is significantly coming down as we speak. For instance, back in 2020, a 6kw solar battery cost about $10,000, which now is about $7,700

It is the only way to go for those who live off the grid 

Without the benefit of Fit, having one’s storage system saves on power bills even more 

Complete control over your energy consumption 

Power backup for days in the event of a power outage, and with the addition of solar panels, you can forget the grid.  

Solar Battery Storage Price in Australia: How Much Do Solar Batteries Cost?

It’s tough to figure out solar battery prices because it depends on many variables. For example, it will depend on your power needs, whether you have any power-hungry appliances, household size, geographic location, etc.

Depending on these variables, you can determine how much of a storage unit you require. Thus, That’s how the cost of solar batteries is estimated. 

But to give you a rough idea, the price of a kWh of residential solar battery storage can hover over the $1000 mark.

These include the cost of installation and GST. Remember that the battery brand and all the other factors mentioned matter in the end, and prices vary depending on those factors. 

10kw Solar Battery Price

As of October 2023 in Sydney, NSW, the current cost of a 10kW solar battery paired with a 6.6kW solar panel system is $12,888. This price includes two 5.1 kWh modules integrated with a 6.6 kW solar system. The potential payback time for this system can be less than 4 years.

The Tesla Powerwall, which has a storage capacity of 13.5 kWh, costs approximately $1,150 per kilowatt-hour.

When considering the broader market, solar batteries without the solar component typically fall from $900 to $1,200 per kilowatt-hour. The specific pricing varies based on the brand and model.

6kw Solar Battery Cost

The solar battery storage cost is how much you pay for each unit of electricity it can store, and it’s usually measured in dollars per kilowatt hour ($/kWh).

Typically, these batteries cost between $900 and $2,000 per kilowatt-hour. If you want a solar setup with a 10.2-kilowatt-hour battery and a 6.64-kilowatt solar system, it might cost you around $12,888.

If you just want the battery alone, without the solar system, a solar battery alone can cost $990 per kilowatt-hour. It includes a particular device called a hybrid inverter that connects the battery to the solar system.

For a specific type of battery called the Tesla Powerwall, which has a 13.5 kilowatt-hour capacity and comes with its inverter, the price is $1200 per kilowatt-hour.

Another type of battery, the Sungrow 9.6 kilowatt-hour solar battery, is priced at $1227 per kilowatt-hour. This cost includes a 5-kilowatt hybrid inverter.

If you’re looking at a solar panel system with a 6-kilowatt capacity, and it includes a battery with a capacity of 16.6 kilowatt-hours, the total cost for installing this combined system can range from about $19,935 to an average of $25,235.

The exact price depends on the type and quality of your chosen system. For more details, check out how much a 6kW solar battery costs in Australia.

Solar battery ROI

The return on investment (ROI) for solar batteries in Australia is influenced by various factors, such as the system’s initial cost, local electricity rates, solar generation capacity, and available government incentives or rebates.

Key considerations include the upfront expenses encompassing the battery, inverters, installation, and related components.

The cost of grid electricity in your area is pivotal, with higher rates potentially leading to faster returns, as stored solar energy use during peak periods saves on electricity bills.

Solar panel efficiency, battery performance, and lifespan also impact long-term returns. Government incentives, rebates, and electricity consumption patterns, especially during high-demand periods, contribute to overall ROI.

Monitoring technological advancements is crucial for assessing the economic viability of solar battery systems over time.

Seeking professional analysis and staying informed about industry trends and policy changes are advisable for making well-informed investment decisions in Australia.

How To Choose Solar Batteries?

To choose solar batteries in Australia, consider your energy needs, capacity and performance, compatibility with your solar system, warranty, and cost. Assess the battery’s kilowatt-hours (kWh) storage capacity to match your daily usage.

Look for reliable brands and models with proven performance and longer lifespans. Ensure compatibility with your existing solar system, and check for government incentives or rebates. Compare the cost per kilowatt-hour and warranty terms.

Consider factors like installation requirements and whether the battery supports backup power. Seek professional advice to tailor your choice to specific needs and conditions.

State Rebates for Solar Batteries

State rebates for solar batteries vary across Australia. States like South Australia, Victoria, and Queensland offer specific incentives and rebates for solar batteries.

However, rebate programs and amounts can change, so it’s crucial to check the latest information from your state government or relevant authorities for the most up-to-date details on solar battery rebates.

Solar Battery FAQs

The size of the solar battery needed to power a house in Australia depends on various factors, including your energy consumption, the size of your solar panel system, and your specific energy needs.

On average, a medium-sized household might require a solar battery with a capacity ranging from 5 kWh to 20 kWh.

To determine the appropriate size, consider your daily electricity usage, the sunlight your location receives, and whether you want the battery to provide backup power during outages.

It’s advisable to consult with a solar energy professional to assess your specific requirements and design a system that meets your energy goals.

Deciding whether to invest in home battery storage depends on various factors. Your energy consumption, goals, and dependence on the grid play crucial roles.

A battery could be valuable if you experience frequent power outages or seek backup power. Explore your area’s government incentives, rebates, and electricity rates to assess the financial benefits.

A good solar panel system may increase the potential advantages of integrating a battery. Consider the environmental impact, battery lifespan, and technological trends. To make an informed decision, consult with solar professionals like Solar Emporium.

We can tailor advice to your specific needs and circumstances, keeping in mind that the evolving landscape of technology and market conditions may influence the long-term value of a solar battery investment.

If you want to sit down with one of our solar experts and see if solar batteries make sense, contact us today! Reaching out for help is okay; we are here to serve YOU.

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