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On the ins and outs of parking an EV for months on end
Cars are meant to be driven. When a typical vehicle sits unused for weeks or months on end, it begins to atrophy in all sorts of ways. Tires slowly lose their air pressure. Car batteries lose charge and might eventually need a jump-start. Oil and other fluids lose their ability to lubricate when they get stale, while gasoline starts to go bad after about a month. Eventually, nature tries to reclaim a vehicle via pest infestation, accumulating bird poop, or meteorological act of God.
This collection of potential misfortune is why collectors make sure to turn on their barely-driven cars every once in a while. It’s why you might ask your friend to drive your car around the block a couple of times a month when you plan to go away for a long stretch.
Are the rules still the same in the era of electric vehicles? Although EVs have neither an engine nor many of the fluids and parts that come with a gas-burning car, it turns out that electric vehicles don’t do well sitting still for long periods of time, either. The technology under the hood is radically different, but the underlying truth is the same: It’s best not to let the car sit undriven for too long.
Electric cars have one untouchable advantage when it comes to long-term storage: You can just leave them plugged in. If you can do this — even by running a ridiculously long extension cord from a standard outlet — then the car will use this trickle of juice to maintain its battery health and keep its systems ship-shape.
If you can’t leave your car plugged in, though, the first thing to worry about is the EV’s main battery going dead. The giant lithium-ion units in today’s electric cars are really good at retaining charge, but they’re not perfect: An EV sitting still will lose a little bit of juice at a slow, steady rate, perhaps a couple of percentage points over the course of a month. You don’t want to leave your car with barely any charge and return from a trip to find out you killed its battery, especially when letting the unit hit zero could potentially damage it.
This concern is enough to make me fill up my EV to at least half before a flying vacation — that way I don’t have to nervously open the Tesla app to check how many miles are left on the car. But as long as you exercise a modicum of common sense, that shouldn’t be enough to get you in trouble. An electric vehicle with at least 50 percent charge could go many, many months before its charge rate dropped to a worrying level. General Motors tells Heatmap that for its current slate of EVs powered by Ultium batteries, it recommends having at least 30 percent charge on the battery before putting the car into long-term storage.
However, an EV’s main battery isn’t its only one. Before electric vehicles went mainstream, the term “car battery” meant the 12-volt box you’d see for sale at Auto Zone or under the hood of any normal vehicle — the one with the two posts where you’d hook on jumper cables. EVs have these smaller batteries, too. They’re there to handle low-power applications such as the doors and windows in case the main battery dies, and they’re one of the principal worries when it comes to leaving an EV sitting still.
Just like with a gas car, the 12-volt battery in an EV doesn’t like to sit dormant while you take a months-long vacation overseas. GM says the car will monitor the health of both batteries and use energy from the big one to keep the small one from dying — up to a point. If the high-voltage battery gets too low, it stops supporting the 12-volt.
It is possible to disconnect the 12-volt battery if you have the electrical know-how, but your car’s user manual will probably tell you not to. Instead, GM recommends that before you store the Chevy Bolt for a long stretch, you attach a trickle charger to the positive and negative poles of the battery under the hood. The trickle charger is a longstanding gadget that can be used to revive a dead car battery, or, in this case, to prevent it from dying while you’re taking the train across Europe. With it attached, the little battery doesn’t need to steal juice from the big one.
Think, too, about where you’re leaving that EV sitting around. Batteries don’t like extreme temperatures, and bitter cold or insufferable heat could not only sap battery life but also potentially damage the unit. Like traditional cars, EVs are safer stored inside a garage if possible — not sitting around the front yard like a project car.
And one more thing before you leave town: Don’t forget to hide the key fob at least 10 feet away from the car, GM says, lest you accidentally leave the vehicle unlocked.
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Unlike just about every other car sales event, this one has a real — congressionally mandated — end date.
Car salespeople, like all salespeople, love to project a sense of urgency. You know the familiar seasonal rhythm of the TV commercial: Toyotathon is on now — but hurry in, because these deals won’t last. The end of the discount is, of course, an arbitrary deadline invented to juice that month’s sales figures; there’ll be another sale soon.
But in the electric vehicle market there’s about to be a fire sale, and this time it really is a race against the clock.
Federal incentives for EVs and EV equipment were critically endangered the moment Donald Trump won the 2024 presidential election. Now, with the passage of the omnibus budget reconciliation bill on the Fourth of July, they have a hard expiration date. Most importantly, the $7,500 federal tax credit for an EV purchase is dead after September 30. Drivers who might want to go electric and dealerships and car companies eager to unload EVs are suddenly in a furor to get deals done before the calendar turns to October.
The impending end of the tax credit has already become a sales pitch. Tesla, faced with sagging sales numbers thanks in part to Elon Musk’s misadventures in the Trump administration, has been sending a steady slog of emails trying to convince me to replace my just-paid-off Model 3 with another one. The brand didn’t take long to turn the impending EV gloom into a short-term sales opportunity. “Order soon to get your $7,500,” declared an email blast sent just days after Trump signed the bill.
On Reddit, the general manager of a Mississippi dealership posted to the community devoted to the Ioniq 9, Hyundai’s new three-row all-electric SUV, to appeal to anyone who might be interested in one of the three models that just appeared on their lot. It’s an unusual strategy, a local dealer seeking out a nationwide group of enthusiasts just to move a trio of vehicles. But it’s not hard to see the economic writing on the wall.
The Ioniq 9 is a cool and capable vehicle, but one that starts at $59,000 in its most basic form and quickly rises into the $60,000s and $70,000s with fancier versions. Even with the discount, the Ioniq 9 costs far more than many of the more affordable gas-powered three-row crossovers. And now the vehicle has come down with a serious case of unlucky timing, with deliveries beginning this summer just ahead of the incentive’s disappearance. As of October 1, the EV could become an albatross that nobody in suburban Memphis wants to drive off the lot.
Over the past year, Ford has offered the Ford Power Promise, an excellent deal that throws in a free home charger plus the cost of installation to anyone who buys a new EV. That deal was supposed to expire this summer. But the Detroit giant has extended its offer until — surprise — Sept. 30, in the hopes of enticing a wave of buyers while the getting is good.
This isn’t the first time EV-makers have been through such a deadline crunch. When the $7,500 federal tax credit for EV purchases first started in 2010, the law was written so that the benefit phased out over time once a car company passed a particular sales threshold. By the time I bought my EV in the spring of 2019, for example, Tesla had already sold so many vehicles that its tax credit was halved from $7,500 to $3,750. We had to rush to take delivery in the last few days of June as the benefit was slated to fall again, to $1,875, on July 1, before it disappeared completely in 2020.
The Inflation Reduction Act passed under President Biden not only reinstated the $7,500 credit but also took away the gradual decline of the benefit; it was supposed to stick around, in full, until 2032. But despite Trump’s on-again, off-again bromance with Elon Musk, the president followed through on his long-term antagonistic rhetoric against EVs by repealing the benefit as part of this month’s disastrous big bill.
Trump, despite his best efforts, won’t kill the EV. The electric horse has simply left the barn — the world has come too far and seen too much of what electrification has to offer to turn back just because the current U.S. president wants it to. But the end of the EV tax credit (until a different regime comes into power, at least) seriously imperils the economic math that allowed EV sales to rise steadily over the past few years.
As a result, now might be the best time for a long time to buy or lease an electric vehicle, with remarkably low lease payments to be found on great EVs like the Hyundai Ioniq 5 and Chevy Equinox. Once the tax breaks are gone, lease deals (which got lots of drivers into EVs without them having to worry about long-term ownership questions) are likely to grow less enticing. EVs that would have been cost-competitive with gasoline counterparts when the tax credits taken into account suddenly aren’t.
Plenty of drivers will continue to choose electric even at a premium price because it’s a better product, sure. But hopes of reaching many more budget-first buyers have taken a serious hit. It could be a dream summer to buy an EV, but we’re all going to wake up when September ends.
On the NRC, energy in Pennsylvania, and Meta AI
Current conditions: Air quality alerts will remain in place in Chicago through Tuesday evening due to smoke from Canadian wildfires • There is a high risk of a tropical depression forming in the Gulf this week • The rain is clearing on the eastern seaboard after 2.64 inches fell in New York’s Central Park on Monday, breaking the record for July 14 set in 1908.
The Trump administration is putting pressure on the Nuclear Regulatory Commission to “rubber stamp” all new reactors, Politico reports based on conversations with three people at the May meeting where the expectation was relayed. The directive to the NRC’s top staff came from Adam Blake, a representative of the Department of Government Efficiency, who apparently used the term “rubber stamp” specifically to describe the function of the independent agency. NRC’s “secondary assessment” of the safety of new nuclear projects would be a “foregone conclusion” following approval by the Department of Energy or the Pentagon, NRC officials were made to believe, per Politico.
A spokesperson for the NRC pointed to President Trump’s recent executive order aiming to quadruple U.S. nuclear power by 2050 in response to Politico’s reporting. Skeptics, however, have expressed concern over the White House’s influence on the NRC, which is meant to operate independently, as well as potential safety lapses that might result from the 18-month deadline for reviewing new reactors established in the order.
President Trump and Republican Senator Dave McCormick of Pennsylvania will announce a $70 million “AI and energy investment” in the Keystone State at the inaugural Pennsylvania Energy and Innovation Summit today in Pittsburgh. The event is meant to focus on the development of emerging energy technologies. Organizers said that more than 60 CEOs, including executives from ExxonMobil, Chevron, BlackRock, and Palantir, will be in attendance at the event hosted by Carnegie Mellon University. BlackRock is expected to announce a $25 billion investment in a “data-center and energy infrastructure development in Northeast Pennsylvania, along with a joint venture for increased power generation” at the event, Axios reports.
Ahead of the summit, critics slammed the event as a “moral failure,” with student protests expected throughout the day. Paulina Jaramillo, a professor of engineering and public policy at Carnegie Mellon, wrote on Bluesky that the summit was a “slap in the face to real clean energy researchers,” and that there is “nothing innovative about propping up the fossil fuel industry.” “History will judge institutions that chose short-term gain over moral clarity during this critical moment for climate action and scientific integrity,” she went on.
On Monday, Meta founder and CEO Mark Zuckerberg confirmed on Threads that the company aims to become “the first lab to bring a 1GW+ supercluster online” — an ambitious goal that will require the extensive development of new gas infrastructure, my colleague Matthew Zeitlin reports. The first gigawatt-level project, an Ohio data center called Prometheus, will be powered by Meta’s own natural gas infrastructure, with the natural gas company Williams reportedly building two 200-megawatt facilities for the project in Ohio. The buildout for Prometheus is in addition to another Meta project in Northeast Louisiana, Hyperion, that Zuckerberg said Monday could eventually be as large as 5 gigawatts. “To get a sense of the scale we’re talking about, a new, large nuclear reactor has about a gigawatt of capacity, while a newly built natural gas plant could supply only around 500 megawatts,” Matthew writes. Read his full report here.
BYD
Electric vehicle sales are currently on track to outpace gasoline car sales in China this year, Bloomberg reports. In the first six months of 2025, new battery-electric, plug-in hybrid, and extended-range electric cars accounted for 5.5 million vehicles sold in the country (compared to 5.4 million sales of new gasoline cars), and are projected to top 16 million before the end of December — both of which put EVs a hair over their combustion-powered competitors.
By contrast, battery-electric cars only accounted for 28% of new-car sales in China last year, per the nation’s Passenger Car Association. But “sales this year have been spurred by the extension of a trade-in subsidy” as well as the nation’s expansive electrified lineup, including “several budget options” like BYD’s Seagull, Bloomberg writes. “China is the only large market where EVs are on average cheaper to buy than comparable combustion cars,” BloombergNEF reported last month.
Window heat pumps are an extremely promising answer to the conundrum of decarbonizing large apartment buildings, a new report by the nonprofit American Council for an Energy-Efficient Economy has found. Previously, research on heat pumps had primarily focused on their advantages for single-family homes, while the process of retrofitting larger steam- and hot-water-heated apartment buildings remained difficult and expensive, my colleague Emily Pontecorvo explains. But while apartment residents used to have to wait for their building to either install a large central heat pump system for the whole structure, or else rely on a more involved “mini-split” system, newer technologies like window heat pumps proved to be one of the most cost-effective solutions in ACEEE’s report with an average installation cost of $9,300 per apartment. “That’s significantly higher than the estimated $1,200 per apartment cost of a new boiler, but much lower than the $14,000 to $20,000 per apartment price tag of the other heat pump variations,” Emily writes, adding that the report also found window heat pumps may be “the cheapest to operate, with a life cycle cost of about $14,500, compared to $22,000 to $30,000 for boilers using biodiesel or biogas or other heat pump options.” Read Emily’s full report here.
California was powered by two-thirds clean energy in 2023 — the latest year data is available — making it the “largest economy in the world to achieve this milestone,” Governor Gavin Newsom’s office announced this week.
CEO Mark Zuckerberg confirmed the company’s expanding ambitions in a Threads post on Monday.
Meta is going big to power its ever-expanding artificial intelligence ambitions. It’s not just spending hundreds of millions of dollars luring engineers and executives from other top AI labs (including reportedly hundreds of millions of dollars for one engineer alone), but also investing hundreds of billions of dollars for data centers at the multi-gigawatt scale.
“Meta is on track to be the first lab to bring a 1GW+ supercluster online,” Meta founder and chief executive Mark Zuckerberg wrote on the company’s Threads platform Monday, confirming a recent report by the semiconductor and artificial intelligence research service Semianalysis.
That first gigawatt-level project, Semianalysis wrote, will be a data center in New Albany, Ohio, called Prometheus, due to be online in 2026, Ashley Settle, a Meta spokesperson, confirmed to me. Ohio — and New Albany specifically — is the home of several large data center projects, including an existing Meta facility.
At the end of last year, Zuckerberg said that a datacenter project in Northeast Louisiana, now publicly known as Hyperion, would take 2 gigawatts of electricity; in his post on Monday, he said it could eventually be as large as 5 gigawatts. To get a sense of the scale we’re talking about, a new, large nuclear reactor has about a gigawatt of capacity, while a newly built natural gas plant could supply only around 500 megawatts.
As one could perhaps infer from the fact that their size is quoted in gigawatts instead of square feet or number of GPUs, whether or not these data centers get built comes down to the ability to power them.
Citing information from the natural gas company Williams, Semianalysis reported that Meta “went full Elon mode” for the New Albany datacenter, i.e. is installed its own natural gas infrastructure. Specifically, Williams is building two 200-megawatt facilities, according to the gas developer and Semianalysis, for the Ohio project. (Williams did not immediately respond to a Heatmap request for comment.)
Does this mean Meta is violating its commitments to reach net zero? While the data center buildout may make those goals more difficult to achieve, Meta is still investing in new renewables even as it’s also bringing new gas online. Late last month, the company announced that it was procuring almost 800 new megawatts of renewables from projects to be built by Invenergy, including over 400 megawatts of solar in Ohio, roughly matching the on-site generation from the Prometheus project.
But there’s more to a data center’s climate footprint than what a big tech company does — or does not — build on site.
The Louisiana project, Hyperion, will also be served by new natural gas and renewables added to the grid. Entergy, the local utility, has proposed 1.5 gigawatts of natural gas generation near the Meta site and over 2 gigawatts of new natural gas in total, with another plant in the southern part of the state to help balance the addition of significant new load. In December, when the data center was announced, Meta said that it planned to “bring at least 1,500 megawatts of new renewable energy to the grid.” Entergy did not immediately respond to a Heatmap request for comment on its plans for the Hyperion project.
“Meta Superintelligence Labs will have industry-leading levels of compute and by far the greatest compute per researcher. I'm looking forward to working with the top researchers to advance the frontier!” Zuckerberg wrote.