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Tesla’s $218M acquisition of ultracapacitor firm opens doors to energy breakthroughs

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Just a few days after Tesla (NASDAQ:TSLA) posted its second consecutive profitable quarter, the company has stated that it plans to acquire energy technology firm Maxwell Technologies, a California-based maker of ultracapacitors and batteries. The deal will reportedly be an all-stock transaction valued at around $218 million, with Tesla buying Maxwell’s 45.9 million shares for $4.75 a share — a 55% premium over the energy company’s closing price of $3.07 a share last Friday.

Maxwell Technologies specializes in the development of ultracapacitors. Prior to its acquisition by Tesla, Maxwell had been working on developing dry electrode technologies that could be utilized to create ultracapacitors that can store large amounts of electrical charge without losing energy — a breakthrough for electric cars and energy storage devices. Ultracapacitors are lauded by several industry watchers as a possible alternative to today’s batteries, considering their potential to be safer and more reliable.

In a statement to The Street, Maxwell Technologies CEO Dr. Franz Fink expressed his optimism over the planned acquisition. The CEO further pointed out that Tesla and Maxwell actually share a common goal — to build a more sustainable future.

Maxwell Technologies’ building in San Diego, CA. (Photo: Maxwell Technologies)

“We are very excited with today’s announcement that Tesla has agreed to acquire Maxwell. Tesla is a well-respected and world-class innovator that shares a common goal of building a more sustainable future. We believe this transaction is in the best interests of Maxwell stockholders and offers investors the opportunity to participate in Tesla’s mission of accelerating the advent of sustainable transport and energy,” he said.

Dr. Fink’s statement was echoed by Tesla. In a statement to CNBC, the electric car maker noted that it is always on the lookout for possible acquisitions that would allow it to pursue its mission. “We are always looking for potential acquisitions that make sense for the business and support Tesla’s mission to accelerate the world’s transition to sustainable energy,” Tesla noted in a statement sent to the publication.

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What is particularly interesting about Maxwell’s acquisition is that Elon Musk himself has expressed his support for ultracapacitor technologies in the past. Back in 2013, Musk mentioned on a Twitter post that he is a “big fan of ultracapacitors,” even adding that he was planning on conducting his Ph.D. research on ultracapacitors during his short stint at Stanford University. That said, Musk also noted that there needs to be a breakthrough in energy density for ultracapacitors to truly make a difference.

Tesla’s acquisition of Maxwell Technologies marks the electric car maker’s fifth acquisition to date. Prior to Maxwell, Tesla acquired Riviera Tool LLC, a manufacturer of stamping die systems used to form sheet metal parts in May 2015; SolarCity, a provider of solar energy services to homeowners, businesses, government, and non-profit organizations in June 2016; Grohmann Engineering, a firm that makes Tesla’s robots for production in November 2016; and Perbix, a maker of highly automated manufacturing equipment in November 2017.

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Tesla and Maxwell Technologies expect to close the acquisition deal sometime in the second quarter of 2019, pending customary closing conditions. So far, the deal appears to be well received by Maxwell’s investors, with the company’s stock (NASDAQ: MXWL) trading up 50.49% as of writing. The reaction of the market to Tesla appears to be more muted, with TSLA stock trading down 0.52% as of writing.

Disclosure: I have no ownership in shares of TSLA and have no plans to initiate any positions within 72 hours.

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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Elon Musk

SpaceX just filed for the IPO everyone was waiting for

SpaceX filed its public S-1, revealing $18.7 billion in revenue and billions in losses.

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SpaceX-Ax-4-mission-iss-launch-date

SpaceX publicly filed its S-1 registration statement with the Securities and Exchange Commission on May 20, 2026, making its financial details available to the public for the first time ahead of what could be the largest IPO in history.

An S-1 is the formal document a company must submit to the SEC before going public. It includes audited financials, risk factors, business descriptions, and how the company plans to use the money it raises. Companies are required to file one before selling shares to the public, and it must be published at least 15 days before the investor roadshow begins. SpaceX had already submitted a confidential draft to the SEC in April, which allowed regulators to review the filing privately before it went public.

The S-1 reveals that SpaceX generated $18.7 billion in consolidated revenue in 2025, driven largely by its Starlink satellite internet division, which posted $11.4 billion in revenue, growing nearly 50% year over year. Despite that growth, the company lost about $4.9 billion in 2025 and has burned through more than $37 billion since its founding.

SpaceX just forced Verizon, AT&T and T-Mobile to team up for the first time in history

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A significant portion of those losses trace back to xAI, Elon Musk’s artificial intelligence company, which was recently merged into SpaceX. SpaceX directed roughly 60% of its capital spending in 2025 to its AI division, totaling around $20 billion, yet that division lost billions and grew revenue by only about 22%.

SpaceX plans to list its Class A common stock on Nasdaq under the ticker SPCX, with Goldman Sachs, Morgan Stanley, and Bank of America leading the offering. The dual-class share structure means going public will not meaningfully reduce Musk’s control, as Class B shares he holds carry 10 votes per share compared to one vote for public Class A shares.

The company is targeting a raise of around $75 billion at a valuation of roughly $1.75 trillion, which would make it the largest IPO ever. The investor roadshow is reportedly planned for June 5.

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Elon Musk

Tesla ditches India after years of broken promises

Tesla has ditched its plans to build a factory in India after years of failed negotiations.

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Tesla’s long-running effort to establish a manufacturing presence in India is officially over. India’s Minister of Heavy Industries H.D. Kumaraswamy confirmed on May 19, 2026 that Tesla has informed authorities it will not proceed with a manufacturing facility in the country.

Tesla first signaled serious interest in India around 2021, when it began hiring local staff and lobbying the Indian government for lower import tariffs. The ask was straightforward: reduce duties enough for Tesla to test the market with imported vehicles before committing capital to a local factory. India’s position was equally firm, with an ask of Tesla to commit to manufacturing first, then receive tariff relief. Neither side moved, and the talks quietly collapsed.

Tesla to open first India experience center in Mumbai on July 15

India had offered a policy that would reduce import duties from 110% down to 15% on EVs priced above $35,000, provided companies committed at least $500 million toward local manufacturing investment within three years. Tesla declined to participate. The tariff standoff was only part of the problem. Analysts pointed to significant gaps in India’s local supply chain, inadequate industrial infrastructure, and a mismatch between Tesla’s premium pricing and the purchasing power of India’s automotive market as additional factors that made the investment difficult to justify.

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First signs of an unraveling relationship came in April 2024, when Musk abruptly cancelled a planned trip to India where he was set to meet Prime Minister Modi and announce Tesla’s market entry. By July 2024, Fortune reported that Tesla executives had stopped contacting Indian government officials entirely. The government at that point understood Tesla had capital constraints and no plans to invest.

The more fundamental issue is that Tesla’s existing factories are currently operating at approximately 60% capacity, making a commitment to building new manufacturing capacity in a new market difficult to defend to investors. Tesla will continue selling imported Model Y vehicles through its existing showrooms in Mumbai, Delhi, Gurugram, and Bengaluru, but local production is no longer part of the plan.

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SpaceX just forced Verizon, AT&T and T-Mobile to team up for the first time in history

AT&T, T-Mobile, and Verizon just joined forces for one reason: Starlink is winning.

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Starlink D2D direct to device vs Verizon, AT&T (Concept render by Grok)

America’s three largest wireless carriers, AT&T, T-Mobile, and Verizon, announced on On May 14, 2026 that they had agreed in principle to form a joint venture aimed at pooling their spectrum resources to expand satellite-based direct-to-device (D2D) connectivity across the United States in what can be seen as a direct response to SpaceX’s Starlink initiative. D2D, in plain terms, is technology that lets a standard smartphone connect directly to a satellite in orbit, the same way it connects to a cell tower, with no extra hardware required.

The alliance is widely seen as a means to slow Starlink’s rapid expansion in the satellite internet and mobile markets. SpaceX’s Starlink Mobile service launched commercially in July 2025 through a partnership with T-Mobile, starting with messaging before expanding to broadband data. SpaceX secured access to valuable wireless spectrum through its $17 billion deal with EchoStar, paving the way for significantly faster satellite-to-phone speeds.

The FCC just said ‘No’ to SpaceX for now

SpaceX was not shy about its reaction. SpaceX president and COO Gwynne Shotwell responded on X: “Weeeelllll, I guess Starlink Mobile is doing something right! It’s David and Goliath (X3) all over again — I’m bettin’ on David.” SpaceX’s VP of Satellite Policy David Goldman went further, flagging potential antitrust concerns and asking whether the DOJ would even allow three dominant competitors to coordinate in a market where a new rival is actively entering.

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Financial analysts at LightShed Partners were blunt, saying the announcement showed the three carriers are “nervous,” and pointed to the timing: “You announce an agreement in principle when the point is the announcement, not the deal. The timing, weeks ahead of the SpaceX roadshow, was the point.”

As Teslarati reported, SpaceX’s next generation Starlink V2 satellites will deliver up to 100 times the data density of the current system, with custom silicon and phased array antennas enabling around 20 times the throughput of the first generation. The carriers’ JV, which has no definitive agreement, no financial structure, and no deployment timeline yet, will need to move quickly to matter.

Elon Musk’s SpaceX is targeting a Nasdaq listing as early as June 12, aiming for what would be the largest IPO in history. With Starlink now serving over 9 million subscribers across 155 countries, holding 59 carrier partnerships globally, and now powering Air Force One, the carriers’ joint venture announcement landed at exactly the wrong time to look like anything other than a defensive move.

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