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Here’s what we know so far, including what’s changed since last year.
The Biden administration announced final new emissions standards for cars on Wednesday, significantly curtailing both the carbon dioxide and the toxic soot and chemicals that spew from the tailpipes of the nation’s light- and medium-duty vehicles.
With that, Biden is checking off one of the two most important pieces of unfinished climate business he has left on his first term to-do list. The rules tighten pollution limits gradually over six years, beginning in 2027. In concert with other Biden policies including consumer tax credits for electric vehicles purchases, initiatives to build out charging infrastructure, and support for domestic manufacturing, the standards will help accelerate the transition to electric vehicles that is already well underway.
Transportation is responsible for more planet-warming emissions than any other part of the U.S. economy. To get the country on the path of reaching net zero emissions by 2050, as Biden has set out to do, curbing car emissions is unavoidable.
When the rules were originally proposed last year, we wrote that they would “roughly halve carbon pollution from America’s massive car and truck fleet, the world’s third largest, within a decade.” That’s still broadly the case, even though the final version features one big change: Automakers will now have more time to cut emissions from their fleets. They will still have to achieve the same standard in 2032 as what was originally proposed, but they can transition to it more slowly.
Ahead of the official release, senior administration officials downplayed the significance of the slower rollout. They argued that giving automakers, dealers, and labor unions more time in the near-term would make for a sturdier rule, and that the cumulative emissions benefits of the final standard converge with the original proposal. At a White House event on Wednesday, members of the president’s climate team built on that message, framing the new rules not as a government mandate but rather as a tool to give consumers more of what they already want. “We are witnessing a technological revolution driven by the markets,” Environmental Protection Agency administrator Michael Regan proclaimed.
Also speaking at the event was John Bozzella, head of the Alliance for Automotive Innovation, which represents most U.S. automakers, including the Big Three. Bozzella praised the administration for heeding the industry’s concerns over the original proposal’s rapid phase-in and said the new rules were “much improved” from what had initially been proposed. “Pace matters to automakers,” he said. “It certainly matters to consumers.”
The full rule was released mid-day Wednesday, and we’re digging through it to find out exactly what else has changed. But here’s what we know so far.
The rules strengthen greenhouse gas emission limits, in terms of grams of CO2 per mile, that automakers will have to adhere to, on average, across their product lines. They also tighten limits on dangerous pollutants, including particulate matter — the tiny bits that make up soot — and nitrogen oxides.
This chart shows how the cuts in the final rule compare to those proposed in the draft rule. The version released last April required automakers to make steeper reductions to carbon emissions in the first three years, while the final rule allows for a more gradual reduction.
No. They are what’s called technology-neutral standards, meaning that automakers have options for how to comply with them. Since automakers have to meet the emissions targets on average across their fleets, rather than for each vehicle, it’s likely they’ll produce a range of options in 2032, including plug-in hybrids, regular hybrids, and even some gas cars with improved efficiency — though their fleets will probably have a much higher proportion of EVs than they do now.
While that generally hasn’t changed from the preliminary rule, the Biden administration’s messaging around it has.
When it released the initial proposal, the EPA emphasized that the least-cost path to achieving the standards would be for about two-thirds of new vehicles sold in 2032 to be electric. Although this was just one potential scenario, it was widely interpreted as a target or even a mandate — particularly by Biden’s political opponents.
On Tuesday, administration officials said that the two-thirds finding had been based on limited data. The EPA now estimates that EVs may make up anywhere between 30% and 56% of new light-duty sales from model years 2030 to 2032.
By 2032, the light-duty fleet on offer from automakers will emit half as much carbon as vehicles on the market in 2026.
The EPA estimates that these rules will avoid 7.2 billion metric tons of carbon from 2027 to 2055, which accounts for the vehicles’ full lifetime on the road. That’s slightly less than the 7.3 billion metric tons the initial proposal would have avoided.
The rules will change the mix of vehicles sold by automakers, encouraging dealers to sell more hybrid, plug-in hybrid, and battery electric vehicles. They’re also expected to save Americans roughly $62 billion in fuel costs and avoided maintenance costs, since the EPA assumes that EVs are still cheaper to operate and maintain. On average, a consumer will save about $6,000 over the lifetime of a 2032 vehicle compared to one sold in 2026, according to the agency.
The tailpipe rule will likely increase the cost of building each vehicle, which could translate into higher prices for consumers. However, state and federal tax incentives — as well as the cheaper cost of operating and fueling EVs — will offset that increase.
The rules are projected to deliver major health and environmental benefits to the public. The EPA estimates they will produce $37 billion in benefits from improved public health and climate mitigation, including avoided hospitalizations and premature deaths.
This is what the EPA was created to do — use the best available science to protect human health and the environment. But even after decades of improvements in air quality, there is still a lot of room for improvement. More than one third of the population still live in places with unhealthy levels of ozone or particulate pollution, according to The American Lung Association’s most recent “ state of the air” report. The risks are deeply unequal, with people of color making up half of those exposed. The report also noted that climate change is making it harder to protect people, as heat, drought, and wildfires increasingly lead to spikes in these pollutants. Altogether, ozone and particulate matter are responsible for more than 60,000 premature deaths annually, according to the Health Effects Institute, a nonprofit, independent research organization funded by the EPA and automakers.
Officials stressed that EV sales are already shattering analyst predictions, prices are dropping, and product availability is growing. They see this rule as part of a larger ecosystem of policies — including those in the Inflation Reduction Act, the Bipartisan Infrastructure Law, and the CHIPS and Science Act — that are revitalizing American manufacturing and creating jobs while also contributing to the global fight against climate change. The EPA’s press release notes that companies have announced more than $160 billion in domestic clean vehicle manufacturing, and that the auto manufacturing sector as a whole has added more than 100,000 jobs since Biden took office.
The administration is also, perhaps less loudly, selling the pollution standards as a path to freedom from fossil fuels. During the press call Tuesday, a senior administration official said the rules would enable consumers to break loose from the oil industry’s grip on how we get around and how much it costs us.
The new rules kick in for cars in model year 2027, which will go on sale in 2026 and are being designed right now. Although the Biden administration has suggested that the new rules have won the support of the car industry — including automakers, labor unions, and dealerships — it could still face a court challenge from attorneys general in Republican-controlled states. Republican officials have repeatedly sued to block the Biden administration’s climate policies.
It’s unclear how the Supreme Court would respond to such a challenge. Although the Court has long backed the EPA’s ability to limit climate pollution from cars and trucks, its hard-right majority has recently rolled back what were once thought to be bedrock environmental laws. In this term alone, the Court seems likely to restrict the EPA’s ability to regulate toxic air pollution while sweeping away a central legal doctrine of environmental regulation.
Editor’s note: This story has been updated to reflect the White House event announcing the new rules.
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The Republican effort at permitting reform by way of the reconciliation process appears to have failed — or at least gotten washed out in the “Byrd Bath.”
Democrats on the Senate Budget Committee announced late Thursday night that the chamber’s parliamentarian had advised that several provisions of the new reconciliation bill text violated the “Byrd Rule” and thus were subject to a 60-vote threshold instead of simple majority rule. The parliamentarian has been going over the Senate bill for the past week and her rulings on more sections of the bill are expected this weekend.
The permitting reform plan drawn by the Senate Environment and Public Works Committee essentially allowed project developers to prevent environmental reviews from being subject to litigation if they paid an upfront fee of 125% of the review’s expected cost. A similar provision was included in the House bill.
Rhode Island Democrat Sheldon White House, the ranking member on the Committee, described the permitting language as “turning the National Environmental Policy Act into a pay-to-play scheme” and “a scam ripe for Trump-style corruption.”
Clean energy groups have historically supported efforts to streamline and speed up permitting (and many environmental groups have opposed them), although typically bipartisan ones, like the legislation worked out by the Senate Energy and Natural Resources Committee in the previous Congress, that never gained support in the House of Representatives. Environmental groups have long worried that permitting reform, even bipartisan bills, would benefit the fossil fuel industry by disabling checks against massive oil, coal, and gas projects, whereas the renewable energy industry often sees as an opportunity to more quickly and cheaply advance their own projects.
Payment of the fee would also impose a one year timeline for an environmental impact statement, the most extensive type of review, and a six month timeline for an environmental assessment. The timelines were not ruled out by the parliamentarian, according to the Senate Budget Democrats.
The payment aspect of the plan was crucial to give it a shot at surviving the Byrd Rule, because it meant that the provisions decreased the deficit and thus could be argued to be primarily budgetary in nature (the same way, say, a new tax is).
While the parliamentarian or the Budget Committee didn’t disclose the justification for ruling out the judicial review provisions, Bobby Kogan, a former Budget Committee staffer who works at the liberal Center for American Progress, told me that the provision could have tripped up multiple provisions of the Byrd Rule.
“My guess is that judicial review is presumably outside the jurisdiction of EPW and it’s also probably non-budgetary. If it was budgetary, it’s probably merely incidental — it’s fundamentally about permitting,” Kogan said. “Almost certainly, the judicial thing was killed for merely incidental,” Kogan told me.
A Senate Budget spokesperson did not return a request for comment.
Republicans in the Senate could simply drop the provision or force the whole Senate to take a vote on it — but that vote would be subject to the 60-vote threshold to defeat a filibuster.
While the parliamentarian’s ruling probably means that this attempt at meaningful permitting reform is likely dead, the Trump administration and the Supreme Court have taken several whacks at the National Environmental Policy Act, with the Court recently ruling that agencies can limit themselves to the immediately environmental impact of government actions and instructing lower courts to give more deference to agencies’ reviews.
A new “foreign entities of concern” proposal might be just as unworkable as the House version.
In the House’s version of Trump’s One, Big, Beautiful Bill Act Republicans proposed denying tax credits to clean energy companies whose supply chains contained any ties — big or small — to China. The rules were so administratively and logistically difficult, industry leaders said, that they were effectively the same as killing the tax credits altogether.
Now the Senate is out with a different proposal that, at least on its face, seems to be more flexible and easier to comply with. But upon deeper inspection, it may prove just as unworkable.
“It has the veneer of giving more specificity and clarity,” Kristina Costa, a Biden White House official who worked on Inflation Reduction Act implementation, told me. “But a lot of the fundamental issues that were present in the House bill remain.”
The provisions in question are known as the “foreign entities of concern” or FEOC rules. They penalize companies for having financial or material relationships with businesses that are “owned by, controlled by, or subject to the jurisdiction or direction of” any of four countries — Russia, Iran, North Korea, and, most importantly for clean energy technology, China.
The Inflation Reduction Act imposed FEOC restrictions on just one clean energy tax credit — the $7,500 consumer credit for electric vehicles. Starting in 2024, if automakers wanted their cars to qualify, they could not use battery components that were manufactured or assembled by a FEOC. The rules ratcheted up over time, later disallowing critical minerals extracted or processed by a FEOC.
The idea, Costa told me, was to “target the most economically important components and materials for our energy security and economic security.” But now, the GOP is attempting to impose FEOC restrictions liberally to every tax credit and every component, in a world where China is the biggest lithium producer and dominates roughly 80% of the solar supply chain.
Not only would sourcing outside China be challenging, it would also be an administrative nightmare. The way the House’s reconciliation bill was written, a single bolt or screw sourced from a Chinese company, or even a business partially owned by Chinese citizens, could disqualify an entire project. “How in the world are you going to trace five layers down to a subcontractor who’s buying a bolt and a screw?” John Ketchum, the CEO of the energy company NextEra, said at a recent Politico summit. Ketchum deemed the rules “unworkable.”
The Senate proposal would similarly attach FEOC rules to every tax credit, but it has a slightly different approach. Rather than a straight ban on Chinese sourcing, the bill would phase-in supply chain restrictions, requiring project developers and manufacturers to use fewer and fewer Chinese-sourced inputs over time. For example, starting next year, in order for a solar farm to qualify for tax credits, 40% of the value of the materials used to develop the project could not be tied to a FEOC. By 2030, the threshold would rise to 60%. The bill includes a schedule of benchmarks for each tax credit.
“That might be strict, but it’s clearer and more specific, and it’s potentially doable,” Derrick Flakoll, the senior policy associate for North America at BloombergNEF, told me. “It’s not an all or nothing test.”
But how companies should calculate this percentage is not self-evident. The Senate bill instructs the Treasury department to issue guidance for how companies should weigh the various sub-components that make up a project. It references guidance issued by the Biden administration for the purposes of qualifying for a domestic content bonus credit, and says companies can use this for the FEOC rules until new guidance is issued.
Mike Hall, the CEO of a company called Anza that provides supply chain data and analytics to solar developers, told me he felt that the schedule was achievable for solar farm developers. But the Biden-era guidance only contains instructions for wind, solar, and batteries. It’s unclear what a company building a geothermal project or seeking to claim the manufacturing tax credit would need to do.
Costa was skeptical that the Senate bill was, in fact, clearer or more specific than the House version. “They’re not providing the level of precision in their definitions that it would take to be confident that the effect of what they’re doing here will not still require going upstream to every nut, bolt, screw, and wire in a project,” she said.
It’s also hard to tell whether certain parts of the text are intentional or a drafting error. There’s a section that Flakoll had interpreted as a grandfathering clause to allow companies to exempt certain components from the calculation if they had pre-existing procurement contracts for those materials. But Costa said that even though that seems to have been the intent, the way that it’s written does not actually achieve that goal.
In addition to rules on sourcing, the Senate bill would introduce strict ownership rules that could potentially disqualify projects that are already under construction or factories that are already producing eligible components. The text contains a long list defining various relationships with Chinese entities that would disqualify a company from tax credits. Perhaps the simplest one is if a Chinese entity owns just 25% of the company.
BloombergNEF analyzed the pipeline of solar and battery factories that are operational, under construction, or have been announced in the U.S. as of March, and quite a few have links to China. The research firm identified 22 firms “headquartered in China with Chinese parent companies or majority-Chinese shareholders” that are behind more than 100 existing or planned solar or battery factories in the U.S.
One example is AESC, a Japanese battery manufacturer that sold a controlling stake in the business to a Chinese company in 2018. AESC has two gigafactories under construction in Kentucky and South Carolina, both of which are currently paused, and a third operating in Tennessee. Another is Illuminate USA, a joint venture between U.S. renewables developer Invenergy and Chinese solar panel manufacturer LONGi; it began producing solar panels at a new factory in Ohio last year. The sources I reached out to would not comment on whether they thought that Ford, which has a licensing deal with Chinese battery maker CATL, would be affected. Ford did not respond to a request for comment.
Hall told me he would expect to see Chinese companies try to divest from these projects. But even then, if the business is still using Chinese intellectual property, it may not qualify. “It’s just a lot of hurdles for some of these factories that are already in flight to clear,” he said.
In general, the FEOC language in the Senate bill was “still not good,” he said, but “a big improvement from what was in the House language, which just seemed like an insurmountable challenge.”
Albert Gore, the executive director of the Zero Emissions Transportation Association, had a similar assessment. “Of course, the House bill isn’t the only benchmark,” he told me. “Current law is, in my view, the current benchmark, and this is going to have a pretty negative impact on our industry.”
A statement from the League of Conservation Voters’ Vice President of Federal Policy Matthew Davis was more grave, warning that the Trump administration could use the ambiguity in the bill to block projects and revoke credits. “The FEOC language remains a convoluted, barely workable maze that invites regulatory chaos, giving the Trump administration wide-open authority to worsen and weaponize the rules through agency guidance,” he wrote.
On storm damage, the Strait of Hormuz, and Volkswagen’s robotaxi
Current conditions: A dangerous heat dome is forming over central states today and will move progressively eastward over the next week • Wildfire warnings have been issued in London • Typhoon Wutip brought the worst flooding in a century to China’s southern province of Guangdong.
Hurricane Erick made landfall as a Category 3 storm on Mexico’s Pacific coast yesterday with maximum sustained winds around 125 mph. Damages are reported in Oaxaca and Guerrero. The storm is dissipating now, but it could drop up to 6 inches of rain in some parts of Mexico and trigger life-threatening flooding and mudslides, according to the National Hurricane Center. Erick is the earliest major hurricane to make landfall on Mexico's Pacific coast, and one of the fastest-intensifying storms on record: It strengthen from a tropical storm to a Category 4 storm in just 24 hours, a pattern of rapid intensification that is becoming more common as the Earth warms due to human-caused climate change. As meteorologist and hurricane expert Michael Lowry noted, Mexico’s Pacific coast was “previously unfamiliar with strong hurricanes” but has been battered by epic storms over the last two years. Acapulco is still recovering from Category 5 Hurricane Otis, which struck in late 2023.
AccuWeather
An oil tanker collision near the Strait of Hormuz is raising environmental and security concerns. The accident in the Gulf of Oman involved the Adalynn and Front Eagle tankers. It caused a “small oil spill,” according to the Emirati government, but Greenpeace analyzed satellite images and said the oil plume stretches some six square miles from the collision site. “This is just one of many dangerous incidents to take place in the past years,” said Greenpeace campaigner Farah Al Hattab. The Strait of Hormuz is a choke point for oil shipments, with about one-third of the volume of crude exported by sea moving through that route. Oil prices have been on a roller coaster ride since Israel launched airstrikes against Iran on June 13. Ships in the region have been reporting more GPS navigation interference in recent days. “If the conflict continues, we expect these interferences to continue as well,” Jean-Charles Gordon, senior director of ship tracking at research firm Kpler, toldThe New York Times.
North Carolina lawmakers finalized a bill repealing a mandate that directs electric regulators to reduce their carbon dioxide emissions by 70% by 2030. The mandate was part of a landmark 2021 law aimed at dramatically reducing the state’s power plant emissions. While at least 17 other states have similar laws in place, just two – North Carolina and Virginia – are in the Southeast. The new bill’s supporters say that the interim emissions goal would require energy providers to switch to more expensive power sources and that the costs would be passed on to consumers in the form of higher power bills.
Confusingly, regulators would still be asked to work toward carbon neutrality by 2050, even while the short-term emissions goal might be nixed. “Not having any target, even an aspirational target, could mean that we don’t stay on track to get to our 2050 goal,” Democratic Sen. Julie Mayfield said. The bill now goes to Democratic Gov. Josh Stein’s desk. There’s a chance he might veto it, but “with over a dozen House and Senate Democrats voting for the final version, the chances that any Stein veto could be overridden are higher,” The Associated Pressreported.
The United Kingdom issued long-awaited environmental guidance that it will use to determine whether new oil and gas proposals should be approved. The guidance requires that developers estimate and include scope 3 emissions – or the downstream pollution from burning oil and gas – in their drilling applications. This “will ensure the full effects of fossil fuel extraction on the environment are recognized in consenting decisions,” the Department for Energy Security and Net Zero said. The government will consider these emissions, as well as other factors like “the potential economic impact” of a project and a company’s efforts to remove carbon dioxide when granting or denying approval. The guidance will help determine whether major new drilling projects from oil giants Shell and Equinor are approved for the North Sea.
Volkswagen Group unveiled its first fully autonomous production vehicle, the ID. Buzz AD. The electric robotaxis will target corporate customers and mobility services. They “come packed with everything that’s needed to operate them,” explained Iulian Dnistran at InsideEVs. “What makes this solution interesting compared to other ride-hailing platforms is that it enables anybody to start an Uber or Waymo rival without investing hundreds of millions of dollars in research, development, and certification.” The shuttles are slated for launch across Europe and the U.S. next year. Tesla recently announced that its first Robotaxis would hit the streets in Austin, Texas, sometime this month.
Volkswagen
In a new peer-reviewed paper published in the journal Communications Earth & Environment, researchers conclude that offsetting the potential carbon emissions from reserves held by the world’s 200 largest fossil fuel companies would require planting new forests that are larger than the entire continent of North America.