Is a Battery Worth It at 10c FiT? The Math That Shocked Us (and Might Shock You Too!)
So, you've joined the solar revolution, good on ya! You're basking in the glow of lower power bills and even earning a little dosh with a feed-in tariff (FiT) for the excess energy your panels pump back into the grid. But that FiT is only 10 cents per kilowatt-hour (kWh). Now you're asking the big question: should you add a battery to the mix?
Adding a battery sounds like a no-brainer for energy independence, but with that 10c FiT, the answer isn't as straightforward as you might think. We've crunched the numbers and, frankly, some of the results were a bit of a surprise. Let's dive in, mate!
The Battery Basics: What Does it Actually Do?
Before we get lost in spreadsheets, let's quickly revisit what a Solar Battery does. It's essentially a power bank for your home. During the day, your solar panels generate electricity. Any excess juice – that you're not using to power your telly, aircon, or coffee machine – gets stored in the battery. Then, when the sun goes down, or on cloudy days when solar production dips, you can draw power from your battery instead of relying on the grid.
The Feed-in Tariff Factor: 10c – Friend or Foe?
That 10c/kWh FiT is the crux of the issue. For every kilowatt-hour of excess solar energy you send back to the grid, you earn 10 cents. This income needs to be weighed against the cost of a battery and the savings it provides.
The fundamental question becomes: is it financially smarter to store your solar energy in a battery for later use, or to sell it to the grid for a measly 10c?
The Numbers Game: Savings vs. Sales
Let's consider a typical scenario. You're paying, say, 30c/kWh for electricity from the grid (a pretty common rate across much of Australia). If you tap into your stored solar energy instead of drawing from the grid, you're effectively saving 30c/kWh. Now, compare that to selling that same energy for just 10c/kWh. On the surface, using the stored energy seems like the obvious winner, right?
The Battery Elephant in the Room: Upfront Cost
Here's where things get tricky. The biggest obstacle is the hefty upfront cost of buying and installing a battery system. A quality battery, professionally installed, can set you back a significant amount. This is why a thorough calculation is essential to determine whether this investment is the right move for you.
Rebates to the Rescue!
The good news is that the government recognises the benefits of energy storage and offers rebates and incentives to help cushion the blow of that initial investment. These rebates can significantly reduce the upfront cost, making batteries a far more attractive proposition. Check with your local state government websites for details on what is available in your area.
Payback Period: The Waiting Game
Let's run a simplified example. Say you install a battery system for $10,000 after taking advantage of all available rebates. And let's assume your electricity bill savings are $800 per year by using stored solar. This means it will take 12.5 years to pay back the initial investment.
Important caveat: This is a very simplified illustration. The actual payback period will depend heavily on your specific circumstances, including:
- Your energy consumption patterns: Do you use a lot of power at night?
- The size of your solar system: Is it appropriately sized for your needs?
- The size of the battery: Does it have enough capacity to meet your nighttime demand?
- The degradation rate of the battery: Batteries lose capacity over time.
So, Is a Battery Worth It? The Verdict
Ultimately, whether a battery is "worth it" with a 10c feed-in tariff hinges on your individual situation. While the low FiT reduces the immediate financial incentive, the savings from using stored solar energy instead of grid power, combined with government rebates, can still make a battery a worthwhile investment, particularly if you have high nighttime electricity consumption.
Here's our advice:
- Do your homework: Research different battery brands and technologies.
- Get quotes: Contact reputable installers in your area and get detailed quotes, including installation costs.
- Assess your energy needs: Analyse your past electricity bills to understand your consumption patterns.
- Factor in rebates: Don't forget to include any government rebates in your calculations.
Adding a battery with a low feed-in tariff is a complex decision. It's not as simple as "yes" or "no". However, by carefully considering your circumstances and running the numbers, you can make an informed choice that's right for your home and your wallet. Good luck, and happy solar-ing!
