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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 launches first Virtual Power Plant in UK – get paid to use solar

Tesla has launched its first-ever Virtual Power Plant program in the United Kingdom.

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Credit: Tesla Energy | X

Tesla has launched its first-ever Virtual Power Plant program in the United Kingdom. This feature enables users of solar panels and energy storage systems to sell their excess energy back to the grid.

Tesla is utilizing Octopus Energy, a British renewable energy company that operates in multiple markets, including the UK, France, Germany, Italy, Spain, Australia, Japan, New Zealand, and the United States, as the provider for the VPP launch in the region.

The company states that those who enroll in the program can earn up to £300 per month.

Tesla has operated several VPP programs worldwide, most notably in California, Texas, Connecticut, and the U.S. territory of Puerto Rico. This is not the first time Tesla has operated a VPP outside the United States, as there are programs in Australia, Japan, and New Zealand.

This is its first in the UK:

Tesla is not the only company that is working with Octopus Energy in the UK for the VPP, as it joins SolarEdge, GivEnergy, and Enphase as other companies that utilize the Octopus platform for their project operations.

It has been six years since Tesla launched its first VPP, as it started its first in Australia back in 2019. In 2024, Tesla paid out over $10 million to those participating in the program.

Tesla VPP program in California hits new capacity milestone

Participating in the VPP program that Tesla offers not only provides enrolled individuals with the opportunity to earn money, but it also contributes to grid stabilization by supporting local energy grids.

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Tesla Lathrop Megafactory celebrates massive Megapack battery milestone

The Tesla Megapack is the backbone of Tesla Energy’s battery deployments.

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Credit: Tesla Megapack/X

The Tesla Lathrop Megafactory recently achieved a new milestone. As per the official Tesla Megapack account on X, the Lathrop Megafactory has produced its 15,000th Megapack 2 XL battery.

15,000 Megapack Batteries

Tesla celebrated the milestone with a photo of the Lathrop Megafactory team posing with a freshly produced Megapack battery. To commemorate the event, the team held balloons that spelled out “15,000” as they posed for the photo.

The Tesla Megapack is the backbone of Tesla Energy’s battery deployments. Designed for grid-scale applications, each Megapack offers 3.9 MWh of energy and 1.9 MW of power. The battery is extremely scalable, making it perfect for massive energy storage projects.

https://twitter.com/Tesla_Megapack/status/1932578971700638203

More Megafactories

The Lathrop Megafactory is Tesla’s first dedicated facility for its flagship battery storage system. It currently stands as the largest utility-scale battery factory in North America. The facility is capable of producing 10,000 Megapack batteries every year, equal to 40 GWh of clean energy storage.

Thanks to the success of the Megapack, Tesla has expanded its energy business by building and launching the Shanghai Megafactory, which is also expected to produce 40 GWh of energy storage per year. The ramp of the Shanghai Megafactory is quite impressive, with Tesla noting in its Q1 2025 Update Letter that the Shanghai Megafactory managed to produce over 100 Megapack batteries in the first quarter alone.

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Tesla Energy’s Potential

During the first quarter earnings call, CEO Elon Musk stated that the Megapack is extremely valuable to the energy industry. 

“The Megapack enables utility companies to output far more total energy than would otherwise be the case… This is a massive unlock on total energy output of any given grid over the course of a year. And utility companies are beginning to realize this and are buying in our Megapacks at scale,” Musk said.

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Energy

Tesla Megapacks powers the xAI Colossus supercomputer

Tesla Megapacks step in to stabilize xAI’s Colossus supercomputer, replacing natural gas turbines. Musk’s ventures keep intertwining.

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(Credit: Tesla Megapack)

Tesla Megapack batteries will power the xAI Colossus supercomputer in Memphis to ensure power stability. The collaboration between Tesla and xAI highlights the synergy among Elon Musk’s ventures.

The artificial intelligence startup has integrated Tesla Megapacks to manage outages and demand surges, bolstering the facility’s reliability. The Greater Memphis Chamber announced that Colossus, recently connected to a new 150-megawatt electric substation, is completing its first construction phase. This transition addresses criticism from environmental justice groups over the initial use of natural gas turbines.

“The temporary natural gas turbines that were being used to power the Phase I GPUs prior to grid connection are now being demobilized and will be removed from the site over the next two months.

“About half of the operating turbines will remain operating to power Phase II GPUs of xAI until a second substation (#22) already in construction is completed and connected to the electric grid, which is planned for the Fall of 2025, at which time the remaining turbines will be relegated to a backup power role,” the Chamber stated.

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xAI’s rapid development of Colossus reflects its ambition to advance AI capabilities, but the project has faced scrutiny for environmental impacts. The shift to Megapacks and grid power aims to mitigate these concerns while ensuring operational continuity.

The Megapack deployment underscores the collaboration among Musk’s companies, including Tesla, SpaceX, Neuralink, and The Boring Company. Tesla appears to be the common link between all of Musk’s companies. For example, The Boring Company built a tunnel in Giga, Texas. In addition, Musk has hinted at a potential collaboration between the Tesla Optimus Bot and Neuralink. And from January 2024 to February 2025, xAI invested $230 million in Megapacks, per a Tesla filing.

Tesla Energy reported a 156% year-over-year increase in Q1 2025, deploying 10.4 GWh of storage products, including Megapacks and Powerwalls. Tesla’s plans for a new Megapack factory in Waller County, Texas, which is expected to create 1,500 jobs in the area, further signal its commitment to scaling energy solutions.

As xAI leverages Tesla’s Megapacks to power Colossus, the integration showcases Musk’s interconnected business ecosystem. The supercomputer’s enhanced stability positions xAI to drive AI innovation, while Tesla’s energy solutions gain prominence, setting the stage for broader technological and economic impacts.

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