Midday Power Saver + Battery: Should You Charge at 11am–2pm?

The Victorian Midday Power Saver is an optional electricity offer available to eligible residential customers with a smart meter.

• From 11am to 2pm every day, the usage charge under the regulated offer is $0/kWh
• Outside that window, electricity charges apply

For the initial period from 1 October 2026 to 30 June 2027, the regulated maximum usage charges vary by Victorian distribution zone. For example, the maximum peak usage charge from 4pm to 9pm ranges from 39.75c/kWh to 49.82c/kWh across the five distribution zones.

That difference matters for battery owners. A battery can potentially take electricity available during the free window and make it available for use later.

The question is therefore not simply: "Can my battery charge for free?"

Without a battery, your free electricity opportunity is mainly limited to what your home can consume between 11am and 2pm. For example, you might run:

But a battery can potentially extend the benefit beyond those three hours. Think of it this way:

This is where homeowners need to slow down. If your rooftop solar is generating strongly between 11am and 2pm, your battery may already have access to cheap electricity from your own solar system.

In that situation, importing electricity from the grid simply because it is free may not always be the best operating strategy.

Both strategies can have a place. The right choice depends on your solar generation and household load.

For a Melbourne household with solar and battery, there are potentially three sources of energy during the middle of the day:

The objective is not necessarily to maximise one source. The objective is to manage the three intelligently.

Imagine your home has:

By early afternoon, the solar system may already have generated enough electricity to charge the battery. If the battery is already close to full, there may be little reason to force additional grid charging during the free period. Instead, the battery could be reserved for later use.

Now consider a home with:

The battery may not receive enough solar energy to reach the desired state of charge. The Midday Power Saver creates another potential charging opportunity.

If your battery supports grid charging and the relevant configuration allows it, you could potentially charge during the free window and use that stored electricity later. This is particularly relevant when your household has substantial evening electricity consumption.

This is where electrical load management becomes important. An EV charger can consume a significant amount of power. A home battery can also be a significant electrical load while charging.

If you simultaneously run:

you could create a very high household load. The Victorian Government recommends staggering high-energy appliances across the three-hour free period, particularly batteries and EV chargers, rather than running them all simultaneously.

A battery is not necessarily the first thing you should use. If you are home between 11am and 2pm, the simplest approach may be to use electricity directly:

Using electricity directly avoids the need to put energy into a battery and later take it back out.

This is where a battery can become more useful. Suppose your household is relatively quiet during the day but becomes active from 5pm onwards.

Your major electricity demand might come from:

The Midday Power Saver ends at 2pm. Your household still needs electricity after that. A battery can potentially bridge part of that gap.

However, the financial value depends on the battery's cost, efficiency, usable capacity, tariff structure and how much grid electricity it actually replaces.

This is where many battery buyers make a mistake. They see free electricity from 11am–2pm and think: "I should get the biggest battery I can afford."

Battery size should be related to the amount of electricity you can realistically use after solar generation falls. For example, if your household consistently needs only a modest amount of electricity between late afternoon and overnight, an oversized battery may spend much of its time under-utilised.

On the other hand, if you have:

a larger usable battery may make more sense. The correct starting point is your actual consumption profile.

When comparing batteries, don't look only at the headline capacity. A battery advertised as 10 kWh should be assessed using its usable energy specification and operating limits. Also consider:

This sounds obvious, but it is one of the most important points. A battery does not have to be completely charged within the three-hour window. And you do not necessarily need to charge it for the entire three hours.

For example, if your battery is already at 60% at 11am, you may only need enough additional energy to cover your expected evening demand.

This is why battery controls matter. A smart energy-management system can potentially take into account:

This is a practical issue that is easy to overlook. The Midday Power Saver encourages households to shift electricity-intensive activities into the middle of the day. But if everyone in the house follows that advice simultaneously, your home's electrical load can rise quickly.

That can create a substantial instantaneous load. The Victorian Government specifically recommends spreading high-energy appliance use across the three-hour window to reduce the risk of circuit breakers tripping or fuses blowing.

The third approach can be particularly interesting. But it requires proper system configuration.

It depends. If you know your household uses significant electricity between 5pm and 10pm, maintaining a healthy state of charge for the evening may be useful. But if you have:

you may not need to maximise the battery's charge every day. Battery operation should follow your household's energy pattern.

If your battery provides backup power, the calculation becomes different again. You may want to maintain a minimum reserve. For example, your system might be configured to retain some capacity for backup rather than using 100% of the battery every evening.

Some systems reserve capacity according to their operating settings. If backup power is important to you, ask your installer exactly how the battery will operate during normal grid-connected operation and during an outage.

Every battery system has a finite operating life. Repeated charging and discharging contributes to battery cycling.

That doesn't mean you should avoid charging the battery. It means the financial calculation should account for the battery's expected operating life and warranty.

Consider a Melbourne household with:

The household could potentially operate like this:

This is a much more complete picture than simply saying: "Charge your battery for free at noon."

If you already have solar, don't immediately change your battery settings to force grid charging at 11am. First check what your solar system is doing.

That surplus may already be charging your battery. If the battery is charging from solar, importing additional grid electricity may not be necessary.

This is one situation where the Midday Power Saver can become particularly interesting.

This makes the Midday Power Saver a useful additional energy-management tool, rather than something that makes solar unnecessary.

It can make the battery use case more interesting for some households, but it does not automatically make every battery investment worthwhile.

The Victorian Government estimates that eligible households could save between $149 and $428 per year, depending on living situation and the proportion of electricity shifted into the free period. For households with an EV, the government estimates an additional potential saving of up to $674 by shifting EV charging from peak periods.

A battery's value depends on how much stored energy you can actually use and what electricity purchases it replaces.

At Samsun Energy, the battery should be considered as part of the complete household energy system.

For a modern Melbourne home, the electricity system increasingly looks like this:

And sitting alongside this system is the electricity tariff. The Midday Power Saver adds another layer:

This means energy management is becoming less about one piece of equipment and more about coordinating the whole home.

The free window is attractive, but the tariff still has costs outside the window. For 1 October 2026 to 30 June 2027, the regulated maximum rates include:

Before asking your installer or battery manufacturer to change the charging schedule, check:

This information gives you a much better basis for deciding whether battery charging during the free period is worthwhile.

The Midday Power Saver creates an interesting new opportunity for Victorian battery owners. But "free electricity" does not mean "charge the battery as much as possible."

For some homes:

may be the right pattern. For others:

may make sense during periods when solar production is insufficient. And for many homes, the answer may be:

• Victorian Government — Midday Power Saver
• Victorian Government — Who Can Save With the Midday Power Saver
• Victorian Government — Safely Manage Your Home's Power Load
• Essential Services Commission — Midday Power Saver Technical Paper
• Victorian Government — Clean Energy Progress and Midday Power Saver