Are Solar Batteries Worth the Investment?
There’s lots of talk on whether you should even expect a payback when you install a solar battery. Should you? The answer is yes AND no. I want to talk about why that’s the case! I won’t give you specific solar battery prices because they change. But you’ll find a lot of other value in this article.
Is it Worth it on the Sunshine Coast?
That’s a reasonable question because we have so much sun. Another way to ask it is this: If you had extra cash, would you invest it in extra panels or a buy a battery? The cost of solar can be quite affordable depending on the combined effect of price, rebates and grants. If you own an existing solar array without a battery you could be looking to invest in a system with battery capability for energy storage.
The obvious benefit of batteries is that you have the ability to store excess solar power for use during non-sunny periods. Storing excess energy in batteries offers a promising solution for increased energy independence and financial savings above and beyond what panels alone can give. I think some deeper investigation is needed, don’t you? Waiver: I won’t talk about off-grid systems, because by definition, if you are going grid-independent, there’s no question, you’re going to buy a battery!
The Importance of a Return on Investment
With the rise in popularity of solar energy, more businesses and households on the Sunshine Coast are considering the benefits of solar systems and adding battery storage. There’s a huge potential for significant energy savings and increased independence from the grid. So, it’s crucial to understand whether installing a battery offers a good return on investment (ROI). I want to explore the financial and practical aspects of battery solar systems and help you make an informed decision.
Understanding Battery Solar Systems
Let’s start with the basics. Battery and solar panel systems consist of solar panels paired with batteries that store excess energy generated during the day. This stored energy can be used during the evening or on cloudy days, reducing reliance on the grid and providing backup power during outages. Various types of batteries are available, including lithium-ion, LFP or lithium ferrous (iron) sulfate, lead-acid, and saltwater batteries, each with different capacities and lifespans.
Financial Considerations
The price of a battery and its installation can be significant and can scare people off. Battery prices range from $5,000 to $15,000, depending on the system’s size and type. But remember, this investment can lead to substantial savings on electricity bills, (where you receive solar feed-in tariffs when you send excess solar generation back to the grid) especially with the rising energy costs. Wouldn’t you like to avoid spending top dollar on peak rates? I can tell you it feels good never having to do that again. And you have the added benefit of government incentives and rebates available to offset some of the upfront expenses. It all adds up to a much more attractive investment.
Factors Affecting ROI
Several factors influence the ROI of a battery solar system:
Location and Solar Exposure
Sunshine Coast residents benefit from abundant sunlight, making home solar power a viable and efficient option. The more sunlight your panels receive, the more energy they generate, increasing the potential for savings. Excess energy production means you can confidently charge your solar battery bank for later use.
Energy Consumption Patterns
How you use your power matters. Your energy usage plays a critical role in determining ROI. Homes with high daytime energy consumption might benefit less from a battery system than those with significant evening or nighttime usage. But honestly, that also depends on how big a battery you invest in. Calculate what your normal usage is for night time, because that is usually when people like to take advantage of batteries… when the sun is no longer shining and energy peak use forces power prices up.
Battery Lifespan and Maintenance Costs
The lifespan of a battery typically ranges from 10 to 15 years. Regular maintenance can ensure optimal performance, but it’s essential to factor in potential replacement costs over time. While batteries don’t last forever, they probably last longer than that prediction. They lose some capacity over time and that’s why people may find they need to replace them. Or, another option is to add a battery if your solar pv system will allow.
Non-financial, Emotional or Feel-Good ROI
This bit is just as important as a financial return. Just as nobody ever complains they invested in too many solar panels, there is really no price you can place on the feeling of independence from the grid that you get from receiving a reduced energy bill, from using clean renewable energy, or your bills in credit. It’s great to be owed money by your power company. Let’s not forget what it feels like to not worry about putting on an air conditioning unit all day in summer or heating in winter… and never getting bill shock.
Benefits of Battery Storage
To be able to store energy with batteries offers several benefits:
Increased Energy Independence
When you store excess solar energy, you reduce your reliance on the grid and protect yourself from rising electricity prices. My bills went from thousands per year to hundreds per year in credit. This is not an isolated example.
Backup Power During Outages
Batteries provide a reliable source of power during outages, ensuring that essential appliances and systems remain operational. Mind you, make sure your system is a hybrid system that can power your household in a blackout. Ask your installer about the different ways to set up your system… call SWIFT SOLAR and Electrical on 0422 251 734.
Environmental Benefits
You can breathe easy. Literally. I long for the days that big cities have more electric vehicles than petrol and diesel cars. These kind of widespread improvements will come from the wider public adopting a more electric lifestyle.
Reducing reliance on the grid decreases the demand for fossil fuels, contributing to a cleaner environment and a reduction in carbon footprint.
Potential Drawbacks
While the benefits are compelling, there are potential drawbacks to consider:
High Upfront Costs
The initial investment for a battery can be steep, which might be a barrier for some homeowners. With that in mind, there are 0% loan options, home improvement loans, and rebates and grants from the government. It just takes a little research… and of course, asking the experts at SWIFT SOLAR and Electrical (<<<shameless plug! 😉 )
The popular batteries here on the sunny coast include the Tesla Powerwall, BYD, Sungrow and Sonnen, to name a few. The battery capacity you choose depends on your needs, and also will affect how much you pay. Home batteries don’t come cheap but I don’t think you’ll regret the investment in both panels and battery for your commercial or residential solar power system.
Some of your costs will be allayed by your ability to charge your battery at times when either the energy is free from the sun, or when there are off-peak tariffs. This will markedly affect the cost of your solar battery system. For example, at my home, we can program exactly when to charge the battery (either using solar during the day) and when it is available to provide power to the house or car. This means we also can choose the hours of solar export. Naturally, we want to preserve the battery power until we need it.
Decreasing Efficiency Over Time
Batteries lose efficiency as they age, meaning their storage capacity will diminish over time. But even then, they are never useless. Also pv and rooftop solar systems are expandable so if you find yourself needing more storage, you can add it on after the initial installation.
Possible Future Advancements
Technological advancements will undoubtedly lead to better, more efficient and affordable batteries… and the industry is changing daily. As supply improves with demand and widespread uptake, so will the battery costs go down!
Case Studies and Real-Life Examples
Ask us about the many homeowners we’ve helped out with battery solar systems on the Sunshine Coast and we’ll be able to give you positive proof of the great results. Many of our customers contact us to report they have made significant savings. There’s a lot to be said about that feeling of energy security which is reflected in a nationwide upward trend to buying batteries.
Calculating ROI
To calculate the ROI of a battery solar system, consider the following:
Initial Investment
Include the cost of the panels, inverter, battery, installation, and any additional equipment.
Annual Savings
Estimate the reduction in your electricity bills.
Government Incentives
Subtract any available rebates or incentives.
Maintenance Costs
Account for annual maintenance and potential replacement costs.
Several online tools and resources can help you perform these calculations, providing a clearer picture of your potential savings.
Expert Opinions
Homeowners, business operators and industry experts all agree… the initial cost can be a significant consideration, but the long-term benefits of battery storage usually outweigh the upfront expenses. The prevailing opinion is showing that the combination of rising energy costs coupled with improved battery technology makes this investment increasingly attractive. So, the question is to you… what’s stopping you from deciding to get a battery?
Battery Storage Systems Payback
Installing a battery for your solar system on the Sunshine Coast can be a smart financial move, offering substantial long-term savings and increased independence from your energy retailer. By carefully evaluating your energy needs, location, and budget, you can determine whether this investment is right for you.
Call to Action
If you’re considering making the switch to battery storage, contact SWIFT SOLAR and Electrical for a personalized consultation. Our experts can help you navigate the options and find the best solution for your home. Invest in a sustainable future and enjoy the benefits of clean, reliable energy today. Call us for a battery and solar quote on 0422 251 734.

