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Panasonic slumps as Tesla branches out with new battery deal

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Japanese battery maker Panasonic’s appears to be feeling the direct effects of its partnership with California-based electric car maker Tesla. Just recently, Panasonic opted to cut its profit outlook for 2019 over China’s slowing economy due to the trade war against the United States. Amidst these headwinds, Panasonic’s partnership with Tesla proved to be a silver lining for the Japanese company, pushing its battery business towards profitability — the first time in three quarters.

During a briefing about its adjusted forecasts, Panasonic Chief Financial Officer Hirokazu Umeda pointed out that there have been improvements with sales and profit on its battery business over the past months. Umeda notes that much of these improvements are due to its partnership with Tesla, especially considering the upgrades that Panasonic rolled out to its battery cell lines in Gigafactory 1. Overall, Tesla’s business gave Panasonic an operating profit of 16.5 billion yen (around $150M).

“Sales and profit at the Tesla business have improved,” Umeda said, later adding that additional lines at Gigafactory 1 would be installed by the end of March. The Panasonic CFO noted that with the upcoming improvements, Gigafactory 1’s total capacity could reach 35 GWh.

While its battery business appears to be thriving under its partnership with Tesla, Panasonic’s shares were walloped on Tuesday nonetheless. The Japanese firm’s 6.5% decline on Tuesday transpired amidst news that Tesla is acquiring ultracapacitor firm Maxwell Technologies in an all-stock deal valued at around $218 million. Considering that the opportunities presented by the Maxwell acquisition are related to Tesla’s battery technology, one could almost assume that Panasonic is practically losing its exclusivity as the electric car maker’s sole battery provider.

That said, industry analysts from Japan have noted that Panasonic’s recent decline in the market is primarily due to the company’s bleak quarterly earnings and annual profit estimate, which featured a 9% cut in its operating profit outlook and a decline of 19% for Q4 2018. This was a point highlighted by Masahiko Ishino, an analyst from the Tokai Tokyo Research Center, who noted in a statement to Reuters that Panasonic’s dive in the market was mostly due to the company’s outlook. 

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“The latest earnings have revealed how tough the situation is for Panasonic,” he said.  

In a way, both Tesla and Panasonic appear to be branching out in their respective battery endeavors. Apart from acquiring Maxwell and its ultracapacitor tech, Tesla is also reportedly looking to partner with local battery suppliers in China for vehicles that will be produced at Gigafactory 3. On the other hand, Panasonic appears to be doing the same thing, recently teaming up with Toyota Motor Corp to collaborate in the development and production of rectangular-shaped prismatic batteries. Panasonic is also hoping to supply prismatic batteries to carmakers such as Honda, using the technology it would be developing with Toyota.

While these updates from Tesla and Panasonic might give the impression that the two companies are starting to diverge from each other, such an idea would be inaccurate. The batteries for Tesla’s electric cars and energy storage devices built in the US, after all, are still exclusively supplied by Panasonic. That means that the Japanese company would still be heavily invested in Tesla, as the electric car maker continues the Model 3 ramp and as it raises the production of its energy products like the Powerwall 2. Considering Tesla’s product roadmap, there is a very good chance that the electric car maker’s partnership with Panasonic would last for a long time to come. 

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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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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Energy

Tesla Energy celebrates one decade of sustainability

Tesla Energy has gone far since its early days, and it is now becoming a progressively bigger part of the company.

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(Credit: Tesla)

Tesla Energy recently celebrated its 10th anniversary with a dedicated video showcasing several of its milestones over the past decade.

Tesla Energy has gone far since its early days, and it is now becoming a progressively bigger part of the company.

Tesla Energy Early Days

When Elon Musk launched Tesla Energy in 2015, he noted that the business is a fundamental transformation of how the world works. To start, Tesla Energy offered the Powerwall, a 7 kWh/10 kWh home battery system, and the Powerpack, a grid-capable 100 kWh battery block that is designed for scalability. A few days after the products’ launch, Musk noted that Tesla had received 38,000 reservations for the Powerwall and 2,500 reservations for the Powerpack

Tesla Energy’s beginnings would herald its quiet growth, with the company later announcing products like the Solar Roof tile, which is yet to be ramped, and the successor to the Powerwall, the 13.5 kWh Powerwall 2. In recent years, Tesla Energy also launched its Powerwall 3 home battery and the massive Megapack, a 3.9 MWh monster of a battery unit that has become the backbone for energy storage systems across the globe.

Key Milestones

As noted by Tesla Energy in its recent video, it has now established facilities that allow the company to manufacture 20,000 units of the Megapack every year, which should help grow the 23 GWh worth of Megapacks that have already been deployed globally. 

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The Powerwall remains a desirable home battery as well, with more than 850,000 units installed worldwide. These translate to 12 GWh of residential entry storage delivered to date. Just like the Megapack, Tesla is also ramping its production of the Powerwall, allowing the division to grow even more.

Tesla Energy’s Role

While Tesla Energy does not catch as much headlines as the company’s electric vehicle businesses, its contributions to the company’s bottom line have been growing. In the first quarter of 2025 alone, Tesla Energy deployed 10.4 GWh of energy storage products. Powerwall deployments also crossed 1 GWh in one quarter for the first time. As per Tesla in its Q1 2025 Update Letter, the gross margin for the Energy division has improved sequentially as well.

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Tesla Energy shines with substantial YoY growth in deployments

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Credit: Tesla Megapack

Tesla Energy shined in what was a weak delivery report for the first quarter, as the company’s frequently-forgotten battery storage products performed extraordinarily well.

Tesla reported its Q1 production, delivery, and deployment figures for the first quarter of the year, and while many were less-than-excited about the automotive side, the Energy division performed well with 10.4 GWh of energy storage products deployed during the first quarter.

This was a 156 percent increase year-over-year and the company’s second-best quarter in terms of energy deployments to date. Only Q4 2024 was better, as 11 GWh was recorded.

Tesla Energy is frequently forgotten and not talked about enough. The company has continued to deploy massive energy storage projects across the globe, and as it recorded 31.5 GWh of deployments last year, 2025 is already looking as if it will be a record-setting year if it continues at this pace.

Tesla Megapacks to back one of Europe’s largest energy storage sites

Although Energy performed well, many investors are privy to that of the automotive division’s performance, which is where some concern lies. Tesla had a weak quarter for deliveries, missing Wall Street estimates by a considerable margin.

There are two very likely reasons as to why this happened: the first is Tesla’s switchover to the new Model Y at its production facilities across the globe. Tesla said it lost “several weeks” of production due to the updating of manufacturing lines as it rolled out a new version of its all-electric crossover.

Secondly, Tesla could be facing some pressure from pushback against the brand, which is what many analysts will say. Despite the publicity of attacks on Tesla drivers and their vehicles, as well as the company’s showrooms, it would be safe to assume that we will have a better picture painted of what the issue is in Q2 after the company reports numbers in July.

New Tesla Model Y was a best-seller in China in March 2025

If Tesla is still struggling with lackluster delivery figures in Q2 after the Model Y is ramped and deliveries are more predictable and consistent, we could see where the argument for brand damage is legitimate. However, we are more prone to believe the Model Y, which accounts for most of Tesla’s sales, and its production ramp is likely the cause for what happened in Q1.

In what was a relatively bleak quarter, Tesla Energy still shines as the bright spot for the quarter.

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