A few years ago, exporting surplus power to the grid felt like the reward for going solar. Today, many Australian homeowners are asking a sharper question:
When it comes to feed-in tariff vs battery, is exporting still the smart move, or would storing that energy save you more?
The short answer is that the maths has shifted. This guide walks through how each option works, where the financial crossover sits, and how to weigh it against your own tariff, solar generation, and household habits.
What Is a Feed-in Tariff?
A feed-in tariff (FiT) is the rate your electricity retailer pays you for surplus solar you send back to the grid. When your panels generate more than your home is using—usually in the middle of the day—that excess flows out and earns you a credit on your bill, measured in cents per kilowatt-hour (kWh). A kWh is simply a unit of energy: running a 1,000-watt appliance for one hour uses 1 kWh.
The catch is that FiT rates have fallen sharply. Across Australia in 2026, most sit somewhere around 1 to 10 cents per kWh, depending on your state, retailer, and plan. With more than four million solar homes exporting at once each midday, wholesale prices dip—sometimes below zero—which drags export credits down. The solar feed-in tariff Australia landscape now varies widely: Victoria removed its mandatory minimum in 2025, while NSW, Queensland, and South Australia run market-based rates.
How a Solar Battery Changes the Equation
A solar battery stores your surplus daytime generation instead of exporting it. Come evening, when the panels stop producing but your household is cooking, heating, cooling, or charging devices, you draw on that stored energy rather than buying expensive grid power.
This matters because of one simple gap. The electricity you avoid buying from the grid typically costs 30 to 45 cents per kWh. The electricity you export earns you only a few cents. So every kWh you self-consume through a battery can be worth several times more than the same kWh sold back. That single fact is why the answer to the question “Is battery storage better than feed-in tariff?” now leans toward storage for many homes.
The same store-now, use-later logic applies beyond your own solar. As schemes like the three hours of free midday electricity roll out from 2026, a battery lets you soak up cheap daytime power and spend it during the expensive evening peak.
Feed-in Tariff vs Battery at a Glance
| Factor | Feed-in tariff (export) | Solar battery (self-consume) |
|---|---|---|
| What it does | Sells surplus solar to the grid | Stores surplus solar for later use |
| Typical value per kWh | ≈ 1–10c export credit | ≈ 30–45c avoided grid cost |
| Upfront cost | None | Significant (but rebate-assisted) |
| Evening / night use | None, you buy from the grid | Powered by stored solar |
| Backup during blackouts | None | Yes, if configured |
| Best suited to | Low evening use, no budget yet | High evening/overnight use |
Solar Battery vs Feed-in Tariff Savings: The Numbers
Consider a household with 10 kWh of surplus solar on a typical day, which is roughly 3,650 kWh across a year. Exported at 5c FiT, that surplus earns about $183 a year. Stored in a battery and used in place of grid power priced at 35c/kWh, the same energy is worth around $1,278 a year in avoided purchases.
These figures are illustrative, not a quote. Real results depend on how much surplus your system produces, how much you’d actually shift into the evening, and your specific rates. For a fuller worked example with tariffs and payback ranges, see our breakdown of the economic benefits of a battery-enhanced solar system. The honest takeaway: if your FiT is low and your evening usage is high, storing usually wins.
Finding Your Own Crossover Point
The most useful number isn’t an average but your own crossover. Start by comparing two figures of your latest bill: your feed-in tariff (export) rate, and your usage (import) rate during the evening. The wider the gap between what you’re paid to export and what you pay to buy back, the stronger the case for a battery.
Then layer in how much of your solar you currently export versus self-consume. If most of your generation already gets used during the day, a battery has less surplus to work with. If, like many working households and families, you export heavily at midday and buy heavily at night, a battery captures value you’re currently giving away.
Falling FiTs Aren’t the Only Shift: Emerging Export Charges
A newer factor rarely covered in older comparisons is the solar export charge, informally called the “sun tax.” Several networks now apply a small charge on solar exported during saturated midday hours above a free daily allowance, while paying a higher reward for exports later in the day. It’s a network charge passed through by retailers, so its impact varies by plan—and for most households it has proven modest rather than alarming.
Still, it nudges the economics further toward self-consumption: storing midday solar and releasing it in the evening sidesteps the charge and captures the higher evening value. Knowing how export charges are playing out across each state, and whether a time-of-use tariff would pair well with a battery, can help you paint a better picture before you decide.
What a Battery Adds That Exporting Can’t
A feed-in tariff is purely financial. A battery also gives you things exporting never will: backup power to keep essentials running through blackouts and storms, protection against future price rises by locking in more of your own generation, and genuine energy independence—using your own power on your own terms rather than accepting whatever your retailer pays.
For blackout-prone or storm affected areas, that resilience alone can tip the decision. For others, it’s the peace of mind of predictable costs heading into retirement, or readiness for an electric vehicle. These benefits weigh just as heavily as the export-versus-store sum.
When Staying on a Feed-in Tariff Alone Still Makes Sense
A battery isn’t automatically right for everyone, and it’s worth saying so plainly. If your household uses most of its power during the day, your bills are already low, or you simply don’t have the budget yet, a competitive feed-in tariff can be a sensible interim choice. Some homeowners also prefer to add a battery later, once rebates and their own usage patterns make the case clearer.
The point isn’t to buy a battery because FiTs have fallen, but to check whether your own tariff, solar output, and usage make storage worthwhile. Buying for the right reason is what protects your money.
Why Battery Size Decides Whether the Maths Work
The savings only materialise if your battery is sized to your evening load. A battery that empties before the peak period ends sends you back to buying expensive grid power exactly when you were trying to avoid it, and the crossover you calculated quickly disappears. Oversize it, and you’ve paid for capacity your solar can’t fill on shorter winter days.
That’s why the export-versus-store decision isn’t really answered by an average online figure; it’s answered by your own generation, evening usage curve, and how much surplus you actually have to store. Our advisors help turn a rough crossover estimate into numbers you can rely on. With multiple national and state-level rankings from SunWiz, VoltX Energy has reinforced its position as one of Australia’s leading solar battery installers, trusted by thousands of homes.
Finding Your Own Answer at VoltX Energy
So, is it better to export or store solar power? With feed-in tariffs sitting low and export charges emerging on some networks, the economics of solar have shifted decisively toward self-consumption. For many homes, using your own solar through a battery is now worth considerably more than exporting it—because the grid power you avoid buying costs far more than the credit you’d earn.
Still, there’s no universal answer. Whether a battery is financially worthwhile comes down to your feed-in tariff, your solar generation, and your household habits. The single most useful thing you can do is compare your current export rate against what you pay to buy power back in the evening. That gap tells you most of the story, and it’s the starting point for sizing anything.
From there, the practical next step is a proper look at your own figures. Request a free quote from our energy experts at VoltX Energy and see whether storing your solar beats exporting.
Frequently Asked Questions
No. Adding a battery doesn’t cancel your feed-in tariff—you'll still earn export credits on any surplus your battery hasn’t stored. In practice, a battery simply reduces how much you export because you’re using more of that solar yourself. On the days your battery fills up, the extra still flows to the grid at your usual rate.
For most households today, storing usually delivers more value than exporting. The electricity you avoid buying from the grid typically costs several times more than the feed-in tariff you’d earn exporting the same energy, so self-consuming through a battery stretches each kWh further. The exception is homes with a high feed-in tariff and very little evening usage, where exporting can still stack up—which is why it comes down to your own rates and habits.
It can be, though the financial case is narrower. If you’re on a genuinely high feed-in tariff and use little power in the evening, exporting may serve you well on the numbers alone. But savings aren’t the only consideration, as a battery also gives you backup power during blackouts (if configured for backup), protection against future price hikes, and greater energy independence, none of which a feed-in tariff provides. Weigh those alongside the export-versus-usage gap on your bill before deciding.
Enough to cover the bulk of your evening and overnight usage without emptying before the peak period ends, but not so large that your solar can’t refill it on shorter winter days. The right size comes down to your actual generation and your evening load curve.
The sun tax is an informal name for solar export charges some networks apply to power exported during saturated midday hours, above a free daily allowance. For most households, the impact has been modest, but it does tilt the maths further toward self-consumption, since storing midday solar for the evening sidesteps the charge and captures the higher-value evening window.
