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Tesla’s bigger, smarter battery earns high praise from Australian energy minister

Tesla's 100 MW/129 MWh Powerpack system in Jamestown, Australia. (Credit: Tesla)

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Tesla’s big battery in South Australia may not have been able to maintain its crown as the world’s biggest energy storage installation with its 50% upgrade to a 150MW/194MWh system, but the Powerpack farm has received a notable amount of praise from a key government official nonetheless. In a recent statement, South Australia energy minister Dan Van Holst Pellekaan stated that the upgraded Tesla battery could be a crucial part of the state’s efforts to avoid large-scale blackouts. 

Tesla’s big battery, officially known as the Hornsdale Power Reserve, has already provided a notable amount of benefits to South Australia. Since it was deployed as a 100MW/129MWh system, the battery farm has helped the grid’s stability while helping residents save money on their power bills. With its 50% expansion, the South Australia energy minister noted that that the installation could serve as an even better “shock absorber” for the grid. 

“Batteries can suck massive amounts of electricity out of the grid within milliseconds and they can pump massive amounts of electricity back into the grid within milliseconds. That shock absorber-type capacity is what helps us to stop a blackout that would otherwise occur,” Mr. Pellekaan said in a statement to ABC News.

The expansion of the Hornsdale Power Reserve was delivered by French renewables company Neoen in collaboration with Tesla and the South Australian and Commonwealth governments. According to Neoen managing director Louis de Sambucy, the larger size of the battery installation should allow the Powerpack farm to offer additional services such as synthetic inertia, a function that has long been dominated by fossil fuel-powered generators. 

“What’s great about this expansion is it’s making the battery bigger and smarter. We will be providing a number of grid-stabilizing services, to keep the voltage and frequency very stable,” de Sambucy stated. 

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Similar to its early days, the upgraded Tesla Powerpack farm was already helping the grid even before it was officially deployed. During its test periods, for example, the 150MW/194MWh battery performed a rapid 270MW flip by charging at 120MW and discharging at 150MW in a rapid manner. The battery performed this feat multiple times, at one point pushing down power prices in the area to just above AU$8 per MW. 

With the undeniable success of the Hornsdale Power Reserve, Neoen has filed its development application for a mammoth sustainable energy project that could involve a total of 1,200MW of wind energy, 600MW of solar photovoltaic systems, and 900MW/1800MWh of battery storage. The French energy company is yet to announce a battery partner for such this high-profile project, though considering the performance of the Hornsdale Power Reserve and a massive 600MW/1200MWh system in Victoria that will use Tesla’s flagship Megapack batteries, there seems to be a fair chance that the Elon Musk-led firm may be involved in Neoen’s 1.8GWh battery project as well. 

Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

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Tesla VP hints at Solar Roof comeback with Giga New York push

The comments hint at possible renewed life for the Solar Roof program, which has seen years of slow growth since its 2016 unveiling.

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Image Credit: Tesla/Twitter

Tesla’s long-awaited and way underrated Solar Roof may finally be getting its moment. During the company’s Q3 2025 earnings call, Vice President of Energy Engineering Michael Snyder revealed that production of a new residential solar panel has started at Tesla’s Buffalo, New York facility, with shipments to customers beginning in the first quarter of 2026. 

The comments hint at possible renewed life for the Solar Roof program, which has seen years of slow growth since its 2016 unveiling.

Tesla Energy’s strong demand

Responding to an investor question about Tesla’s energy backlog, Snyder said demand for Megapack and Powerwall continues to be “really strong” into next year. He also noted positive customer feedback for the company’s new Megablock product, which is expected to start shipping from Houston in 2026.

“We’re seeing remarkable growth in the demand for AI and data center applications as hyperscalers and utilities have seen the versatility of the Megapack product. It increases reliability and relieves grid constraints,” he said.

Snyder also highlighted a “surge in residential solar demand in the US,” attributing the spike to recent policy changes that incentivize home installations. Tesla expects this trend to continue into 2026, helped by the rollout of a new solar lease product that makes adoption more affordable for homeowners.

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Possible Solar Roof revival?

Perhaps the most intriguing part of Snyder’s remarks, however, was Tesla’s move to begin production of its “residential solar panel” in Buffalo, New York. He described the new panels as having “industry-leading aesthetics” and shape performance, language Tesla has used to market its Solar Roof tiles in the past.

“We also began production of our Tesla residential solar panel in our Buffalo factory, and we will be shipping that to customers starting Q1. The panel has industry-leading aesthetics and shape performance and demonstrates our continued commitment to US manufacturing,” Snyder said during the Q3 2025 earnings call.

Snyder did not explicitly name the product, though his reference to aesthetics has fueled speculation that Tesla may finally be preparing a large-scale and serious rollout of its Solar Roof line.

Originally unveiled in 2016, the Solar Roof was intended to transform rooftops into clean energy generators without compromising on design. However, despite early enthusiasm, production and installation volumes have remained limited for years. In 2023, a report from Wood Mackenzie claimed that there were only 3,000 operational Solar Roof installations across the United States at the time, far below forecasts. In response, the official Tesla Energy account on X stated that the report was “incorrect by a large margin.”

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Tesla China’s Megafactory helps boost Shanghai’s battery exports by 20%: report

Located in the Lingang New Area of the Shanghai Free Trade Zone, the Tesla Megafactory has been running at full throttle since opening in February.

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Credit: Tesla Asia/X

Reports from China have indicated that the Tesla Shanghai Megafactory has become a notable player in China’s booming battery export market.

Located in the Lingang New Area of the Shanghai Free Trade Zone, the Tesla Megafactory has been running at full throttle since opening in February. It produces Tesla Megapack batteries for domestic and international use.

Tesla Shanghai Megafactory

As noted in a report from Sina Finance, the Tesla Shanghai Megafactory’s output of Megapack batteries helped drive a notable rise in lithium battery shipments from the city in the first three quarters of 2025. This is quite impressive as the Megafactory is a rather young facility, though it has been steadily increasing its production capacity.

“The establishment of this benchmark factory has not only driven the rapid development of Shanghai’s energy storage industry but also become a new growth engine for foreign trade exports. Driven by the Tesla energy storage factory’s opening, Shanghai’s lithium battery exports reached 32.15 billion yuan ($4.5 billion) in the first three quarters, a 20.7% increase,” the publication wrote.

Ultimately, the Shanghai Megafactory has proved helpful to the city’s “new three” industries, which are comprised of new energy vehicles, lithium batteries, and photovoltaic systems. Exports of the “new three” products reached 112.17 billion yuan ($15.7 billion), a 6.3% year-over-year increase during the same period. The city’s total trade volume grew 5.4% year-over-year as well, with exports up 11.3%, driven largely by the clean energy sector’s performance.

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Energy storage is helping Shanghai

Since opening in February, the Shanghai Megafactory has been firing on all cylinders. In late July, Tesla Energy announced that the new battery factory has successfully produced its 1,000th Megapack unit. That’s quite impressive for a facility that, at the time, had only been operational for less than six months. 

Speed has always been a trademark of the Shanghai Megafactory. Similar to Tesla’s other key facilities in China, the Megafactory was constructed quickly. The facility started its construction on May 23, 2024. Less than a year later, the site officially started producing Megapack batteries. By late March 2025, Tesla China noted that it had shipped the first batch of Megapack batteries from the Shanghai plant to foreign markets.

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Energy

Tesla recalls Powerwall 2 units in Australia

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(Credit: nathanwoodgc /Instagram)

Tesla will recall Powerwall 2 units in Australia after a handful of property owners reported fires that caused “minor property damage.” The fires were attributed to cells used by Tesla in the Powerwall 2.

Tesla Powerwall is a battery storage unit that retains energy from solar panels and is used by homeowners and businesses to maintain power in the event of an outage. It also helps alleviate the need to rely on the grid, which can help stabilize power locally.

Powerwall owners can also enroll in the Virtual Power Plant (VPP) program, which allows them to sell energy back to the grid, helping to reduce energy bills. Tesla revealed last year that over 100,000 Powerwalls were participating in the program.

Tesla announces 100k Powerwalls are participating in Virtual Power Plants

The Australia Competition and Consumer Commission said in a filing that it received several reports from owners of fires that led to minor damage. The Australian government agency did not disclose the number of units impacted by the recall.

The issue is related to the cells, which Tesla sources from a third-party company.

Anyone whose Powerwall 2 unit is impacted by the recall will be notified through the Tesla app, the company said.

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