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U.S. EV sales have been way up — just not for the domestic champion, which sank to its worst-ever market share in August.

Americans are rushing to buy electric vehicles ahead of the expiration of the $7,500 consumer tax credit at the end of this month.
And fewer of those cars are Teslas.
Preliminary data from Cox Automotive for August, first shared with Reuters, shows that the month was the best for EVs in U.S. history, with just over 146,000 units sold, comprising almost 10% of total car sales that month. At the same time, Tesla’s share of the EV market hit its lowest recorded level, down to a (still sizable) 38%.
Cox’s data puts Tesla sales at 55,000 for the month, which is up a little more than 3% from July but down over 6% from a year prior, while the company’s total market share fell from just over 40% in July and 45% in the first half of the year. In 2020, by contrast, Tesla’s share of U.S. EV sales was about 80%. Overall, Cox estimated that Tesla sales in the U.S. are down about 9% so far this year.
“The U.S. EV market is in a far more dynamic place than a few years ago,” Corey Cantor, the research director at the Zero Emission Transportation Association, told me in an email. “Most automakers now offer electric vehicle models in multiple segments. There are multiple electric vehicles available below the average price point of a new car at $48,000.”
Entering this new phase means that the EV market is getting less Tesla-centric, almost by definition. Morgan Stanley reported that electric vehicle sales were up 23% in August from a year ago, while overall car sales were up 7.5% — although even amidst this industry-wide growth, Tesla sales fell more than 3% year over year, while electric vehicle sales were up 42%.
Much of that EV market growth comes down to timing. “Early indications are that EV sales are in fact surging over the past two months, following the changes that will phase the credit out at the end of this month. We’ve seen record sales for EV models last month, such as the Honda Prologue,” Cantor said. This likely means some portion of these sales are being “pulled forward” from buyers trying to beat the deadline and these sales numbers will not persist through the rest of the year.
As Tesla’s stranglehold over the U.S. EV market may be weakening, so too is its hold on the international market. Thanks to CEO Elon Musk’s association with right wing politics in the U.S. and abroad, and to fierce competition from Chinese EV leader BYD, Tesla’s sales have fallen dramatically in Europe. Globally, BYD overtook Tesla in sales last year.
None of that seems to matter much to Tesla’s leadership, or to its shareholders. On Friday, the company’s board of directors put forward a new compensation plan for Musk that would boost his ownership of the company to around 25% and put him in line for a $1 trillion payday if he meets growth and performance targets over the next decade.
A Delaware court last year threw out an earlier Musk pay package, arguing that Musk was too close to the board of directors for them to objectively determine his pay in the interest of all the company’s shareholders. (He subsequently relocated Tesla’s official headquarters to Austin, Texas, explicitly to avoid Delaware jurisdiction.) Musk has said that he wants to own about 25% of the company, a significant upgrade from the roughly 15% he owns currently.
Tesla’s board said in a recent regulatory disclosure that Musk had “reiterated that, if he were to remain at Tesla, it was a critical consideration that he have at least a 25% voting interest in Tesla,” and that “Mr. Musk also raised the possibility that he may pursue other interests that may afford him greater influence if he did not receive such assurances.”
The board’s disclosure also confirmed that Musk sees the future of Tesla as going far beyond selling cars to people. The filing said that “through its discussions with Mr. Musk,” the special committee in charge of coming up with his compensation had “identified four core product lines that would drive Tesla’s future transformation”: Tesla’s vehicle fleet, automation (i.e. Full Self-Driving) software, its robotaxi product, and humanoid robots. Tesla’s robotaxi service is available on a select basis in Austin, with no date yet indicated for a wider rollout, while its humanoid robots — which Musk has said will one day make up 80% of the company’s value — are due to reach “scale production” next year, Musk said on a recent earnings call.
Tesla stock actually rose on the news of the proposed compensation package, likely because Tesla shareholders viewed it as a way to retain Musk and keep his attention on the company.
Longtime Tesla bull Adam Jonas, an analyst at Morgan Stanley, said in note to investors that the compensation deal now means that Musk “has an incentive to focus on Tesla more than ever.” Jonas also, like many Tesla bulls, sees its business of selling cars to people as just a small portion of its overall value — in his case, $76 a share, compared to his $410 a share price target or the roughly $346 a share price the stock was trading at on Monday afternoon.
Still, the company today is largely a pretty normal car company, at least according to its income statement. In the second quarter of its current fiscal year, some $16.6 billion of Tesla’s $22.5 billion in revenue came from cars, with $2.8 billion coming from its energy business and $3 billion coming from “services and other revenues.”
Declining market share in its biggest product line isn’t completely meaningless, even if many Tesla shareholders see a glorious future for the company beyond the automobile trade.
Looking ahead, Cantor said to expect the EV market to get even more diverse.
“Moving forward, we will continue to see automakers innovate in the EV space. Timelines may change and models will vary by automaker, but high-profile launches expected over the next year include the Rivian R2, a new version of the Chevrolet Bolt EV, as well as more affordable models by Lucid and Kia,” Cantor said in his email.
“While the 30D [consumer electric vehicle tax] credit’s phase out will have a real impact on sales the next quarter or two here in the U.S.,” he added, “the long-term trend of excitement and innovation continues to be in the launch of new electric vehicles.”
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The spinoff of Lawrence Livermore National Lab has a new 10-point plan to get onto the grid by the 2030s.
One of fusion energy’s newest startups, Inertia Enterprises, is betting that the fastest route to commercial fusion runs through one of the field’s oldest ideas. The company, which raised a $450 million Series A earlier this year, plans to build a power plant based on the laser-driven fusion system pioneered at Lawrence Livermore National Laboratory’s — the only tech yet to have produced more energy from a fusion reaction than it took to initiate it. Now, Inertia has shared its commercialization roadmap exclusively with Heatmap, detailing the 10 near-term capabilities it must demonstrate before this landmark experiment can become a grid-scale power plant by the mid-2030s.
The roadmap offers a route from the national lab’s impressive but commercially impractical fusion demonstrations to an economical power plant capable of producing electricity for the grid. At its core are a set of milestones — mostly aimed at developing cheap, mass-manufacturable components — that Inertia says it must clear before those individual systems can be integrated into a working plant. This road is not necessarily linear, however, as various teams will likely be working on many of these goals simultaneously.
At least the physics of Inertia’s approach are already proven, the startup’s CEO Jeff Lawson told me, pointing to the fusion experiments at Lawrence Livermore’s National Ignition Facility as a proof-of-concept. The lab’s demonstration of net energy gain caps more than six decades and $30 billion (in 2026 dollars) of U.S. fusion research. The remaining challenges, he argued, are all engineering-related, requiring “elbow grease, hard work, and smart people” rather than breakthroughs in fusion science.
"It seems to us like a startup or a commercial company of any variety should be focused on commercializing a proven scientific result, as opposed to actually trying to demonstrate the basic science to begin with," Lawson told me. Basic science, he argues, is better left to national labs and universities, where researchers can pursue "unbounded problems" that don’t align with the expectations and timelines of venture-backed startups.
Indeed, no fusion startup has yet achieved scientific breakeven, the milestone Lawrence Livermore first hit in 2022, and has since repeated numerous times. But leading players such as Commonwealth Fusion Systems and Helion Energy maintain that it’s only a matter of time before they validate the physics behind their own reactor designs, which they claim will be highly cost-competitive.
Lawson, on the other hand, readily acknowledged that Lawrence Livermore’s tech is uneconomical in its current form. His bet is simply that the more predictable path to a commercial reactor is to drive down the cost of the lab’s validated fusion approach, known as inertial confinement. This system relies on high-powered lasers firing at a millimeter-scale pellet of fusion fuel, compressing it to extreme temperatures and pressures until the atoms fuse. Today, the National Ignition Facility makes each individual fusion target by hand, a workable solution given that it only uses about a dozen per year.
That production model, however, isn’t remotely plausible for a grid-scale power plant. Because each fusion reaction lasts just a fraction of a billionth of a second, a commercial facility must fire its lasers at a fresh target about 10 times per second to generate continuous electricity — requiring the production of hundreds of millions of targets each year.
Scaling production to roughly a million pellets per day and making them inexpensive enough for commercial operation without compromising the strength or precision required for fusion ignition is central to Inertia’s roadmap. That includes goals five, seven, eight and nine — industrializing the manufacturing of the carbon shells that hold the fusion fuel, making the thin films that hold those carbon shells both durable and cheap, scaling up and automating fusion target assembly, and speeding up how fast targets are filled with the requisite deuterium-tritium fuel.
The other central focus of the roadmap is the laser system, which will ultimately consist of 1,000 individual units operating in concert to compress and heat the fusion fuel. Key priorities include reducing the system’s cost (goal two), dramatically increasing its firing cadence (goal three), and bolstering its durability to withstand high-intensity operations (goal four). Goal six also complements these efforts, calling for the development of a control system capable of tracking moving fusion targets to precisely align each laser shot.
Goals one and 10 bookend the journey with some broader milestones. The first focuses on increasing the fusion target’s energy gain — the ratio of fusion energy produced to laser energy delivered — to more than 25 times ignition. Today, the National Ignition Facility’s best-performing laser shot has yielded a gain of just over four times what it took to start the reaction. Goal 10 then zooms out to the ultimate objective: integrating all these technologies into a commercially viable power plant that can deliver either electricity or industrial heat to end customers.
To reach that point, Inertia has embarked on an industrial engineering hiring spree, recruiting folks with experience taking complex hardware systems from prototype to mass production, “not unlike the processes that are used in the semiconductor or consumer electronics world,” Lawson explained. The company has been making progress on its component development goals since the beginning of the year, he told me, and expects to announce the successful demonstration of a few of these milestones in the coming months. Lawson ultimately expects Inertia to complete the core components of its laser and target manufacturing systems by the middle of next year.
The team will spend the next two to three years integrating these individual pieces into two fully operational subsystems, a prototype laser system and a target manufacturing line. Around 2030, the company will begin combining those subsystems into a first-of-a-kind fusion power plant, which will also serve as the proving ground for the target chamber, tritium fuel breeding system, and power conversion system that turns fusion heat into electricity. By the middle of the next decade, Inertia aims to be generating power from this first plant, setting the stage for the company to build and connect additional grid-scale commercial power plants.
There are plenty of engineering trade-offs that the company will have to solve for. Take the decision around how to size the target chamber, for example. “If you make it bigger, your walls have an easier time and survive longer, but it’s more expensive. If you make it smaller, your walls have a tougher time because they’re closer to all the heat and energy that the fusion reaction is creating, but now your power plant costs less to build.”
But to Lawson, this represents exactly the type of problem Inertia was built to solve: complex engineering issues that come to the fore once scientists have demonstrated the fundamental physics are sound. He thinks other fusion companies may someday reach this stage, as well — though he’s unwilling to hazard a guess on exactly what approach or startup is best positioned to do so.
“There have been generations of scientists who’ve made their predictions about fusion energy and gotten it wrong,” he told me. “I’m not going to pretend to be smarter than them. All I’m here to say is, just knowing that one did work, we can commercialize it.”