The Christmas Solar Advantage: Why Summer Is the Smartest Time to Add a Battery

Australia’s summer is famous for two things: scorching heat and unbeatable solar production.
But what most homeowners don’t realise is that December and January are also the most profitable months for battery owners — and the least profitable for anyone still exporting to the grid.

If you’ve been thinking about adding a battery, the Christmas period is genuinely the smartest time to do it. Here’s why.

1. Summer = Maximum Solar Production

December and January deliver some of the highest solar yields of the entire year.
Panels run at full tilt. The days are long. And unless you’re home running your air-con all day, your house barely uses electricity.

Air-con off (when you're away).
TVs and appliances off.
Kids home less.
Holiday mode = minimal daytime usage.

Meanwhile your solar system is producing mountains of excess energy.

The Battery Advantage

Without a battery, all that surplus is sent back to the grid for cents.

With a battery, you:

• Store every excess kilowatt for night-time use
• Offset peak evening prices
• Avoid the summer bill spike that hits most households

Instead of donating your power to the grid, your battery keeps it for your home.

2. Holiday Exports Are Worth Almost Nothing

Here’s the part nobody tells you:

Feed-in tariffs collapse during holiday periods.

Retailers regularly cut export rates between December and January because:

• Grid congestion increases
• Solar supply surges
• Energy retailers reduce seasonal FIT payments
• Wholesale prices drop during the day

Result:

You export hundreds of kWh…
and receive almost nothing for it.

Most homeowners only realise this when their January bill arrives and they’re shocked at how little they earned.

3. So How Does a Battery Fix All This?

There are two ways a battery solves the holiday-export problem — and both work immediately.

A) Increased Self-Consumption (the biggest saving)

Instead of exporting excess power for 5–8 cents, your battery:

• Stores that energy during the day
• Powers your home at night
• Saves you from paying retail prices of 30–60 cents

This alone is worth hundreds of dollars during summer.

You’re replacing expensive energy with your own free solar.

B) Smart VPP Exports With Amber SmartShift™ & Globird ZeroHero

This is where things get interesting.

Platforms like Amber SmartShift™ and Globird ZeroHero let your battery:

• Sell energy back to the grid automatically
• Only during high-price windows
• At rates far above the normal feed-in tariff

Instead of exporting for 5–8 cents…

Your battery can export during peak events for multiples of that amount.

It’s optional, automated, and can earn extra summer income while you’re away on holidays.

Self-consumption saves you the most.
Smart exports make you more on top.
Together: maximum value.

4. Holiday Installs = Faster Payback

Because your battery is collecting maximum summer solar and maximising night-time offset, installing in December gives your system:

• Instant impact
• The fastest possible return
• Savings from the highest production months of the year

A battery installed in March or April will always earn less in its first year than one installed in December.

5. Summer Stability When You’re Away

Whether you’re:

• Away for Christmas
• Travelling interstate
• Taking a long summer break

Your battery keeps your home powered and efficient.

It maintains backup capacity, manages consumption, and prevents grid overcharging — all while you relax.

Christmas Is the Sweet Spot for Battery Owners

Summer gives you maximum solar.

Holiday feed-in tariffs give you minimal return.

Your battery flips the equation:

• Store more
• Save more
• Sell smarter
• Recover your costs faster



Whether for bill savings, energy independence, or smarter exports, the Christmas season is the best time all year to install a solar battery in Australia.