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Australians installed 100,000 home batteries in 17 weeks. Why can't we all do that?

Dave Borlace delivers a startling data point that cuts through the usual climate doom: in just 17 weeks, Australian homeowners installed 100,000 home battery systems. This isn't just a story about solar panels; it is a case study in how aggressive government incentives can instantly transform a struggling grid into a distributed powerhouse. For busy readers tracking the energy transition, this piece offers a rare glimpse of a solution that is already working at scale, proving that the technology is ready even if the policy lagging behind in other nations is not.

The Grid's Tidal Swings

Borlace identifies the core problem that made this surge necessary: Australia's grid was buckling under the weight of its own success. With the highest per capita solar penetration in the world, the network faced "large tidal swings in power flows" that traditional infrastructure simply wasn't built to handle. He explains that when millions of homes export power simultaneously during the day and import it all at once in the evening, it creates "real turbulence in the flow" that leads to inefficiencies and congestion.

Australians installed 100,000 home batteries in 17 weeks. Why can't we all do that?

The author's analogy of tributaries flooding a main river effectively illustrates why a one-way grid fails when homes become power plants. Critics might note that this technical explanation glosses over the massive financial costs of upgrading the physical grid, but Borlace correctly identifies that batteries are a cheaper, faster stopgap than rebuilding the entire network. He argues that the federal "cheaper home batteries program," which offered a 30% discount, was the catalyst that turned a theoretical solution into a market reality.

"The ability to hit a 100,000 battery energy storage systems in just 17 weeks suggests the market is mature. That should send a signal to investors and policy makers in other countries that this is something that can be scaled up from pilot scheme to mass market."

This assertion is the piece's strongest evidence. It shifts the narrative from "can we do this?" to "we are already doing this." The sheer speed of adoption proves that when the economics align, consumer behavior changes overnight.

The Economics of the 'Prosumer'

The commentary pivots to the concept of the "prosumer"—a household that both produces and consumes energy. Borlace notes that with batteries, these homes can store midday excess and feed it back gently, avoiding the grid strain. He highlights that this shift is becoming financially viable even without subsidies in some cases, though he admits the math is heavily dependent on local context.

He is candid about the limitations, acknowledging that Australia's sunny climate makes the investment payback period much shorter than in northern Europe. "Financial and environmental returns are highly context-sensitive," he writes, noting that local tariffs and carbon intensity dictate whether a system makes sense. This nuance is vital; it prevents the piece from becoming a blind cheerleading session for solar and grounds the argument in economic reality.

"When governments provide the right incentives, when technology becomes affordable, and when ordinary folks are given the chance to participate directly in the clean energy transition, remarkable things can happen very quickly indeed."

This sentence captures the article's central thesis: policy is the lever, technology is the tool, and the public is the engine. Without the subsidy, the surge likely wouldn't have happened. The author's admission that he is a "climate emergency zealot" who bought his own system without help adds a layer of personal credibility, though it also highlights a barrier: not everyone has the capital to act before the incentives arrive.

Scaling the Solution

Looking beyond Australia, Borlace addresses the global scalability of this model. He points out that while the specific Australian conditions are unique, the underlying trends are universal. Battery costs are plummeting, and new technologies like sodium-ion batteries are projected to drive cell costs down to "around $10 per kilowatt hour," a figure that was "pure science fiction just a few years ago."

He also tackles the supply chain elephant in the room, noting that recycling processes are now capable of recouping "more than 99% of critical metals like nickel, cobalt, and manganese." This addresses the common counterargument that battery production is unsustainable. While the rapid scaling of manufacturing does pose challenges for raw material sourcing, the author suggests that Western nations are beginning to secure their own supply chains, reducing reliance on geopolitical rivals.

"The trick now is to take those lessons and adapt them intelligently to our own local circumstances. Because if we do that, then the shift from a creaking centralized fossil fuel system to a cleaner, smarter, more resilient energy future stops being a pipe dream and starts looking like exactly what it is in Australia right now, a transition that's already well underway."

This is the piece's most compelling call to action. It reframes the energy transition not as a distant, impossible goal, but as an immediate, adaptable reality. The argument holds up well, provided readers understand that "adapting" means more than just copying the subsidy; it requires tailoring the financial incentives to local grid conditions and energy prices.

Bottom Line

Dave Borlace's coverage succeeds by grounding a massive technological shift in hard numbers and a clear cause-and-effect relationship between policy and adoption. Its greatest strength is the demonstration that the market is ready; its vulnerability lies in the assumption that other governments can or will replicate Australia's aggressive subsidy model in the face of political gridlock. The takeaway is clear: the technology works, the economics are improving, and the only missing piece is the political will to fund the transition.

Sources

Australians installed 100,000 home batteries in 17 weeks. Why can't we all do that?

by Dave Borlace · Just Have a Think · Watch video

If you're one of those folks who likes to keep a breast of the latest developments in all things renewable, then you will no doubt have heard the quite astonishing recent statistic that homeowners over in Australia installed no fewer than 100,000 home battery systems in just the 17 weeks between early July and late October 2025. What prompted such a feverish flurry of domestic technological enhancement? Well, we'll come to that a bit later on. The question is, what impact has such a large surge of distributed energy storage had on Australia's grid?

And have we got ourselves a template here that can be potentially replicated elsewhere in the world? Hello and welcome to Just Have a Think. So, here's the headline in an article on the Renew Economy website. And I suspect you will be not in the least bit surprised to hear that the accelerated uptake came as a direct result of an incentive scheme.

In this case, it was a federal subsidy called the cheaper home batteries program which was launched on July the 1st. That scheme provides a discount of around 30% off an eligible small-scale solar battery system and it sits within the context of a wider initiative called the small-cale renewable energy scheme or SRES which also came into force on July the 1st. Under SRES, household renewable systems, including things like solar panels and solar batteries, generate tradable certificates known as smallcale technology certificates or STC's. The value of those STC's is typically realized as a discount from the installer.

The capacity of the batteries installed over the 17 weeks I just mentioned is, according to the report, just under 2,000 megawatt. That's enough to cover roughly the average daily electricity consumption of almost 400,000 households. And that's a very good thing indeed for an electricity grid that was struggling to accommodate the variable generation from rooftop solar in a nation with the highest per capita penetration of that technology anywhere in the world. Why was it struggling?

Well, according to Australia's National Scientific Research Organization, Cyro, one of the biggest challenges in local networks with high levels of solar powered homes is the emergence of large tidal swings in power flows between power utilities and homes. Because so many homes are now producing electrons during the middle of the day, local networks often see significant exports from homes to grid during ...