Are Solar Batteries Worth It in Melbourne?

The honest answer is that it depends on when you use electricity, not just how much. A battery earns its keep by covering the power you use after the sun goes down.

If your household runs the aircon, cooking, washing and screens in the evening, a battery offsets exactly that, at peak rates. If your home is empty until late and quiet overnight, there is less for a battery to do.

For years, exporting surplus solar to the grid paid reasonably well, so many homes had little reason to store it. That has changed.

• Feed-in tariffs have fallen so far that exported solar now earns very little, so selling your surplus barely moves your bill.
• Peak evening grid prices keep rising, so the power you buy back after sunset is more expensive than ever.
• The federal Cheaper Home Batteries Program, live since 1 July 2025, takes roughly 30 percent off an eligible battery in 2026.

When exporting solar pays almost nothing and buying it back costs a fortune, storing your own power is simply the better deal.

Put together, these shifts mean the gap between the value of stored solar and exported solar has never been wider. That gap is what a battery captures.

This is why we start every quote with your usage pattern, not a product. The same battery that is a clear win for one home is the wrong call for its neighbour.

• Backup power: a battery with backup keeps essential circuits running during an outage, which matters in Melbourne storm season.
• VPP earnings: enrolling in a virtual power plant can pay you for letting the grid draw on your battery during peak events.
• Price certainty: the more of your own power you use, the less exposed you are to the next round of electricity price rises.
• Self-reliance: using your own stored solar simply feels better than watching it export for almost nothing.

1. 1

   Look at your evening and overnight use

   That is the slice of your bill a battery can offset.

2. 2

   Value it at the peak rate

   You avoid buying that power back at the highest tariff of the day.

3. 3

   Apply the federal rebate

   Roughly 30 percent off the upfront figure the savings need to recover.

4. 4

   Add backup and VPP value

   Both shorten the payback beyond the raw bill savings.

If your overnight use is genuinely low, if you are about to move, or if financing would eat the savings, a battery may not pay off for you right now. That is a legitimate outcome.

The federal rebate steps down over time, so waiting has a cost too. The right answer is a real assessment of your bills, not a blanket yes or no.

For most of the last decade, sending surplus solar back to the grid earned a feed-in tariff that made exporting worthwhile. Many Melbourne homes were paid enough that a battery struggled to compete.

That has flipped. Feed-in tariffs have fallen so far that exported solar now barely registers on a bill, while the power you buy back in the evening keeps getting dearer.

Self-consumption is the new goal

Because export pays so little, the goal has shifted from selling surplus solar to using as much of your own as possible. A battery is simply the tool that lets you use your daytime solar after dark.

Aus Energy Solar breaks down the export side of this well in their guide on how much solar you can export to the grid, which is worth reading alongside this if you still have a healthy feed-in rate to weigh up.

The fastest way to see whether a battery is worth it is to picture two real households, both in the same suburb, both with the same solar and the same battery quote.

The evening-heavy household

Two adults working from home part of the week, kids home after school, dinner cooked on electricity, aircon on through summer evenings. Their solar makes plenty during the day that no one is home to use, and their heaviest draw lands after sunset.

For them a battery is close to ideal. It soaks up the midday surplus that would otherwise export for next to nothing and pours it back out over the exact evening peak they were paying top rates for.

The empty-until-late household

A couple who both commute, out of the house until well after dark, light users overnight, away most weekends. Their evening draw is small and short.

For them the same battery works far less. There simply is not much evening load for it to cover, so the savings are thin and the payback stretches out.

It is not the battery that decides the payback. It is when your household actually uses power.

The point is not that one household is right and the other wrong, it is that the answer is personal. Our savings and sizing calculator and our find my fit tool both work from your own usage, and Aus Energy Solar covers the payback question for solar itself in their piece on how long solar takes to pay for itself.