You’re out of free articles.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
Sign In or Create an Account.
By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy
Welcome to Heatmap
Thank you for registering with Heatmap. Climate change is one of the greatest challenges of our lives, a force reshaping our economy, our politics, and our culture. We hope to be your trusted, friendly, and insightful guide to that transformation. Please enjoy your free articles. You can check your profile here .
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Subscribe to get unlimited Access
Hey, you are out of free articles but you are only a few clicks away from full access. Subscribe below and take advantage of our introductory offer.
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Create Your Account
Please Enter Your Password
Forgot your password?
Please enter the email address you use for your account so we can send you a link to reset your password:
For every level of laundry needs.

Americans love laundry. Of the common household chores, it is
by far the most popular — and the most energy-intensive. Washing and drying a load of laundry every two days for a year generates roughly the same emissions as driving from Chicago to New York and back again in a gasoline-powered passenger vehicle. Nearly three-quarters of those emissions come from drying alone; meanwhile, according to the Environmental Protection Agency, the average washing machine generates up to 8% of a home’s total energy use. The whole process can cost up to $150 per year in electricity alone, depending on where you live and the frequency of your washes.
With some regulatory prodding, manufacturers have tried to improve water and energy efficiency in new appliances and have rolled out fancy new features like “smart” water-level sensors, vibration reduction technologies, and microfiber-catching filters. But not every house — or budget — has room for the latest and greatest technologies, and systems that would work well in an airy Los Angeles laundry room might make less sense in a drafty apartment in Minnesota.
Heatmap is here to remove some of the guesswork from upgrading one of your home’s most-used appliances. Here is our expert panel’s insight into when and how to purchase a new washer and dryer for your home.
Joanna Mauer is the deputy director of the Appliance Standards Awareness Project, a non-profit advocacy group pushing for stricter energy efficiency legislation. In her role at ASAP, Mauer works with the Department of Energy on its efficiency rules for residential appliances. She has previously worked for the Environmental Protection Agency and the Center for Integrative Environmental Research.
Amber McDaniel is the head of content at Sustainable Jungle, a website and podcast that publishes tips, tricks, and product reviews, including for major household appliances, with a focus on environmentally friendly solutions.
Scott Flint is a licensed California appliance tech with 30 years of experience. He is known as the Fix-It Guy on his YouTube channel, where he promotes the upkeep and repair of home appliances to extend their use. He has also written extensively about washers and dryers for publications such as The Family Handyman, Taste Of Home, and Earth911.
Peruse the latest washers and dryers and you’ll see features like sensors that adjust the water level to match the load of laundry, voice-activated start buttons, WiFi-enabled push notifications for when it’s time to move a load to the dryer, and more. And while there are environmentally friendly upsides to some of these features, “the more simple the machine, the less likely that things will fail,” Flint told me. In his experience repairing hundreds of washers and dryers over the years, “People save money on their initial purchase and the machine is going to last longer if you can minimize the features.”
The Energy Star certification is a great starting point in your shopping journey. But it shouldn’t be the be-all, end-all of your research. Energy Star represents a range of efficiency standards from different brands, with only the top models earning a “ Most Efficient” distinction.
You’ll still want to read reviews to get a better understanding of the reliability of the products you’re looking at, too. Though many new features on the market promise water and energy savings, they’re harder to repair yourself, meaning any potential fixes can get expensive. They can also have shorter lifespans than simpler models.
Eco-friendly washers and dryers are great for a whole laundry list (get it?) of reasons: They lower your household energy bill, they reduce emissions, they reduce wasted water, they’re often easier to install, and they can be gentler on your clothes. But they don’t necessarily save you time. Energy-efficient electric dryers can take up to twice as long to dry your clothes than traditional gas dryers. Still, all of our expert panelists agreed the upsides outweigh the drawbacks.
Yes, this is a buying guide for purchasing a new washer and dryer. But before you spend money on new appliances, you should consider working with what you already have.
If you’re dealing with an old or sub-optimally functional machine and wondering whether now is the time to upgrade, repairing your existing washer or dryer can actually be a smarter and thriftier solution; in fact, Consumer Reports only recommends replacing a dryer if it’s over 10 years old, electric, and cost less than $700 when you initially purchased it. Often, whatever’s going on doesn’t even require a professional to fix. “I think only rarely — let’s say about 20% of the time — would most people need to call in a technician,” Flint told me. Most washer and dryer problems are something you can fix using “normal household tools.” (More on that later.)
Keep in mind, even if you have an old washer or dryer that isn’t very energy efficient, “that’s still not even going to come close to touching the amount of energy that was used to produce and ship a new machine,” McDaniel told me. When your washer or dryer “actually fully stops working and it’s not doing what you need it to do — that’s when it’s time to upgrade.”
Typically, 1.5 to 3.4 cubic feet of capacity is suitable for a one- to two-person household, 3.5 to 4.4 cubic feet will do for two to three people, and 4.5 or more cubic feet will serve a household with more than three people. But having a new baby or pets might mean you do more loads of laundry than an average household, in which case sizing up is better.
Flint told me a common mistake he sees people make is overloading their washing machines, which can destroy an appliance’s rear bearing — the part of the machine that helps the drum rotate smoothly — a repair that is often so costly, it can make more sense to junk the whole machine. On the other hand, running small loads in a large-capacity washing machine can mean wasting water cleaning not-as-many clothes. Consider what washing machine would make the most sense for your needs to maximize efficiency.
Energy and water efficiency are two of the most common considerations when buying a washer and dryer, and are the primary focus of this guide. Some consumers may have additional concerns — McDaniel, for example, recommended looking for a Restriction of Hazardous Substances certification, which signals that an appliance complies with limits on heavy metals like lead and cadmium. Ethical considerations — including a manufacturer’s contributions to armed conflicts, labor practices, and sourcing of conflict minerals — are also worth close inspection. Ethical Consumer offers an excellent guide for finding a brand that best aligns with your values.
“The first thing that we always recommend is: If you need something new, try to go refurbished,” McDaniel told me. Still, there’s a right way and a wrong way to make a major second-hand purchase. McDaniel suggested going through a reputable source that offers a warranty, such as Best Buy (when searching online, make sure to filters for “Energy Star” and “open box” and check the product’s condition).
If you prefer the security of a new product, then it’s time to familiarize yourself with the Energy Star website. You can sort by Energy Star Most Efficient, which are the best of the best, as well as by price, brand, volume, front-load vs. top-load, vented, ventless, heat pump, gas, electric, and more. Energy Star also makes it easy to compare the specs of different products (just tick the “compare” box next to the machines you’re looking at, then scroll to the top to hit the orange “compare” button when you’re ready).
Dryers are the biggest energy suck in most homes, using two to four times as much energy as new washers and nearly twice as much as new refrigerators. McDaniel told me they are also responsible for the greatest wear and tear on clothes. Dryers are an especially American phenomenon; while more than 80% of households in the U.S. own a dryer, just 30% of European households do. That is to say, you probably don’t actually need one, and if you need to save money or space in your laundry routine, this would be the best place to look to make a cut.
“Not relying on a dryer is huge. I only use mine in the wintertime, and in the summer, I line dry my clothes — and the only reason I don’t do that in the winter is I literally don’t have the space inside,” McDaniel said.
Traditional vented dryers — the energy guzzlers of the American home — aren’t the only option anymore, though. The next best thing to a clothesline is a heat pump dryer, which Mauer told me is the “most efficient clothes dryer on the market today,” often far exceeding the Energy Star requirements. Heat pump dryers have a lower maximum temperature, though, so you don’t get that hot-out-of-the-dryer feel when the load is finished. It can also take an hour or more to dry a load of laundry fully. The bright side: Because the heat is lower, heat pump dryers are much gentler on your clothes.
“A big red flag for us is brands that don’t warranty their products in any capacity,” McDaniel told me. Buying a washer or dryer that is durable is important — Flint told me you should expect to get at least a decade of use out of a washer and dryer with proper maintenance and minor repairs — and a warranty is evidence that a company is building a product that they trust to last.
The Electrolux ELFW7637AT has one of the highest energy- and water-efficiency ratings of any washing machine on the market in 2024, with an IMEF of 3.2 and an integrated water factor of 2.6 — both of which are exceptional even by Energy Star’s standards. It also works. Reviewers have lauded its SmartBoost stain removal technology, its internal water heater, and its straightforward controls, although its 85-minute cycle time is a little longer than many other washers on the market.
Both Flint and McDaniel spoke highly of the German brand Miele, which makes this compact washing machine. Though its capacity is about half that of the Electrolux and it didn’t earn Energy Star’s highest level of certification (it has an IMEF of 2.9 and a IWF of 3.2), it is one of the more reliable and best-reviewed washers on the market.
Admittedly, you have to pay for that kind of dependability — Miele is a high-end brand with a sticker price that reflects it. The WXI860 gets high marks for its cleaning ability, including fill-and-forget auto-dispensing features, and boasts 72% lower energy consumption than conventional washers. Additionally, Miele has “a honeycomb-drum technology, so that when it puts the clothes in the spin cycle, it creates a thin film of water between the drum wall and the laundry,” McDaniel told me, which helps prevent clothing fibers from getting caught. “Little features like that that help keep our clothes in circulation for longer are also more sustainable.”
Mauer swears by heat pump dryers, and there are a number of good choices on the market right now. Beko is a favorite of the Sustainable Jungle team, in part because it has a filtration system to stop microplastics from synthetic fabrics from entering the waterways, as well as the company’s ambitious commitments to low-waste and recycled materials. This ventless Beko heat pump dryer is tiny but mighty, making it a great fit for small spaces (it can even fit under the kitchen counter), and it boasts a 2023 “Most Efficient” rating from Energy Star.
Being a heat pump dryer, though, it can take a while to dry clothes — one tester found it took 227 minutes to dry a large, bulky load to 100% — but plan ahead and Beko can give you major savings in the long run. Or, if the Beko isn’t quite what you’re looking for, check out Miele, which makes its own well-reviewed heat pump dryer (although it is small and pricy).
If a heat-pump dryer isn’t right for your lifestyle, the Electrolux ELFE7637AT is one of the more impressive electric dryers on the market right now, earning the Energy Star seal of approval. While it still isn’t super fast (fast takes a lot of heat, which takes a lot of energy, which makes a machine less efficient), reviewers say it can get a large load to 100% dry in 60 minutes if need be. It’s also the best-rated electric dryer on Consumer Reports’ list that isn’t one of the Samsung, LG, or GE models that Flint frequently gets called out to fix.
This combo washer-dryer uses heat pump technology in its dryer, making it one of the more energy-efficient single-unit models on the market. Unlike some of the other options on this list, however, its larger 4.8 cubic foot drum size is big enough for a two- or three-person household. While combo washer/dryers still have some downsides over their two-piece counterparts, including decreased efficiency in cleaning and especially drying, this is one of the better-reviewed units on the market.
Flint told me that you can often find older Kenmore Whirlpool series 80 machines on Craigslist that are “ really good, and tend to sell for about $250 when refurbished, and often come with a one-year warranty.” The only detriment, he said, is that they’re top-loaders — which waste a lot of water — but “if somebody just really needs a tough machine that is going to last, that was a really good design.”
Congratulations! You’re now the proud owner of a new washer and dryer. What happens now?
New washers and dryers are unfortunately not designed with longevity in mind — but that doesn’t mean you need to replace them if something goes wrong after four or five years.
“I can go up to a washing machine that is sitting in the dump, and I can open up the door, and I can spin the spin basket, and I can tell that it’s a perfectly good machine,” Flint told me.
Flint estimates that only about 20% of the time do people actually need to call in a technician to repair their appliances, pointing to fixes like replacing a blown fuse, unsticking a front-load washer that won’t spin, and swapping out a moldy washer door gasket as deceptively simple tasks. Get acquainted with DIY YouTube channels like Flint’s or repair blogs that explain solutions to common problems.
Still, sometimes you need to call in the big guns. In that case, Flint recommends doing your due diligence on a review service like Yelp beforehand.
Once you find someone you like, reach out with the model number of your machine and the symptom you’re experiencing and the technician “should be able to provide you a quote without coming out if they know what they’re doing,” Flint said. If someone does have to come out to figure out what’s going on, then that visit should be free. “Don’t go with someone who’s going to charge you to come out and diagnose the problem and then charge you to fix it.” Repairs to a front-loading washer will probably run around $170, according to Consumer Reports.
You can extend the life of your washer or dryer by following a few more rules of thumb.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
Environmental groups are lining up against an influx of new PFAS designed to cool AI infrastructure.
This spring, the chemicals company Chemours asked the U.S. government for permission to begin manufacturing 3-Hexene, 1,1,1,2,2,5,5,6,6,6-decafluoro-, (3E)- (CAS RN 1256353-26-0). Because that’s a mouthful, the company also gave the new compound an easier-to-say name: Opteon 2P50.
Under normal circumstances, the filing for Opteon 2P50 would not have been particularly remarkable. As it stands, the compound is one of several hundred chemicals currently under review by the Environmental Protection Agency, pursuant to Section 5 of the Toxic Substances Control Act — the statute that requires companies to seek government approval before they start pumping out new goos, gels, gases, and solvents for commercial use. But when filing its premanufacture notice this spring, Chemours flagged Opteon 2P50 for priority review, describing the “critical societal need” the chemical “directly addresses” — that is, the build-out of data centers.
A surge in demand for coolants, water treatments, specialized fire suppressants, and coatings for semiconductors, among other chemicals, has paralleled the data center boom. One market research firm projects that the market for immersion-cooling fluids alone will grow from just shy of $4.9 billion to $11.1 billion by 2030. The industry has seized on the opportunity, with the American Chemistry Council running sponsored content in Beltway publications like Politico and Axios last year pushing for regulatory easements. “AI and other breakthroughs depend on chemistry,” one such headline reads.
Then last summer, President Trump issued an executive order to streamline the federal permitting and regulatory processes around artificial intelligence. EPA Administrator Lee Zeldin followed that move with an announcement that the agency would henceforth prioritize TSCA reviews for any data center-related chemicals and compounds, bypassing what is often a years-long bottleneck. In the eight months since, I’ve counted four new filings for chemicals with purported data center cooling uses, including a rival coolant to Opteon 2P50 from Schimmer & Schwarz.
But Opteon 2P50 stands out for a few reasons. The biggest is that the compound is a polyfluoroalkyl substance, which, along with perfluoroalkyl substances, are referred to as PFAS, or colloquially as “forever chemicals.” Opteon 2P50’s fast-track request has alarmed environmental, public health, and watchdog groups, who fear that the Trump administration’s regulatory shortcut has created a fast lane for approving new PFAS, which can be nearly impossible to remove from the environment once contamination occurs.
So far, two data center-related PFAS are under review by the EPA, Maria Doa, the chemicals policy senior director at the Environmental Defense Fund, told me: a heat transfer fluid with an “almost completely redacted” filing, and Opteon 2P50. While the latter filing is also heavily redacted, it left enough of a paper trail of lab work and toxicology studies that Earthjustice felt it had the grounds to build a credible opposition. “There was a lot of information for us to comment on and make an opinion on the chemical,” Adriana Antezana, a staff scientist at Earthjustice, told me. “It was also one of the few chemicals so far that have been submitted for the EPA to do a priority review under the executive order to prioritize data center infrastructure. That’s why we flagged it.”
It’s fairly common for premanufacture notices, or PMNs, to include heavy redactions as companies argue they need to shield confidential business information; about two-thirds of TSCA filings from 1979 to 2009 did so in the name of protecting trade secrets, according to a review by the Environmental Working Group, a nonpartisan public health and accountability organization. Still, an Earthjustice-fronted coalition of 17 environmental groups has formally asked the EPA to deny the premanufacture notice for Opteon 2P50 because they say it presents “unreasonable risk” to human health and the environment as a PFAS. They also contend that the full information on the risks to people who’ve been exposed to Opteon 2P50 is “unlawfully” redacted from the filing.
“It seems like chemical companies that create PFAS are hopping on the opportunity to create them for electrical industries,” Antezana said. “Obviously this administration is very supportive of semiconductor manufacturing and data centers, and it seems like, unfortunately, there is an opportunity there for a lot of them to get their chemicals approved and used widely.”
Also at play: The company 3M ceased manufacturing PFAS at the end of last year, leaving a vacuum that Chemours appears eager to fill with Opteon 2P50. The new liquid could replace 3M’s Novec immersion-cooling fluid, the previous industry standard, because it also doesn’t conduct electricity. The appeal of such a chemical is obvious: Many data centers currently use water-intensive evaporative cooling or chilling systems to keep their electronics from overheating. (This is why some opponents describe AI as “thirsty.”) Opteon 2P50, on the other hand, facilitates a completely closed-loop system. Because it doesn’t conduct electricity, electronic equipment can be submerged directly into the fluid, which boils off the heat. The vapors cool and condense back into a liquid — the referent in “two-phase immersion cooling” — and recirculate into the tanks.
Chemours has said that Opteon 2P50 can lead to a 90% reduction in cooling energy, a 60% reduction in a data center’s physical footprint, and “nearly eliminate water use,” all with minimal leakage into the environment — the estimated upper-bound emission rate is 2% per year, a company spokesperson told me. (Chemours declined to make a spokesperson available for an interview for this story and provided a statement about its filing via email. The EPA did not respond to a request for comment.)
Chemours has also insisted that Opteon 2P50 is not, in fact, a PFAS. On its face, that is a dubious argument. Per the internationally used structural definition of a PFAS, it's right in the compound’s long formal name, with the initial string of 10 numbers describing the location of 10 fluorine atoms bonded to carbon — the strongest common single bond in organic chemistry and the reason “forever” chemicals are so difficult to break down and remove once they enter the environment. (It’s also why they make great water-resistant coatings.)
But if a PFAS designation is intended to characterize the persistence of a compound — a narrower definition used by the EPA — then Opteon 2P50 doesn’t fit the bill. After a lifespan of only about 70 days in the atmosphere, it reacts and breaks apart into perfluorinated aldehyde, which in turn breaks down into two ultra-short-chain PFAS: perfluoropropanoic acid (PFPrA) and trifluoroacetic acid (TFA).
It might seem like splitting hairs — if Opteon 2P50 eventually breaks down into PFAS, shouldn’t that be all that matters? — but the company’s aversion to the label is understandable. Concern around PFAS has ballooned in recent years as awareness of the difficulty (and in some cases, near impossibility) of removing such compounds from drinking water has increased. The known and suspected health effects of some PFAS, such as PFOA, can also be alarming, including cancers, fertility issues, and pregnancy complications. The issue has created a rift in Trumpworld, dividing the Make America Healthy Again contingent from regulatory reform advocates and industry lobbyists.
While a minority of data centers across the country use closed-loop cooling systems at this point, and of those an even smaller subset use immersion cooling that requires a specialized dielectric fluid like a PFAS, new facilities are already facing public opinion headwinds that a PFAS association could compound. (In a statement, the American Chemistry Council told me: “Not all PFAS are the same. Individual chemistries have differing properties, uses, and environmental and health profiles, and should be evaluated based on their specific characteristics and the best available science rather than treated as a single class.”)
While Chemours argues that leakage isn’t an issue with Opteon 2P50, the fact that it shared an estimated emission rate with me at all acknowledges the realistic possibility that some will reach the outside world. That may be during manufacturing — Chemours said in its filing that it will make Opteon 2P50 outside the United States and import it to its headquarters, but if the PMN is approved, it will also have legal grounds to produce it stateside — or during its disposal, after an estimated 20 years of use in a data center, as confirmed to me by a company spokesperson. But there are few clues to what that end-of-life disposal process would look like. Antezana of Earthjustice told me that in Chemours’ filing, there is “virtually no acknowledgment of disposal” at all. Chemours’ marketing also suggests it is interested in exploring the use of Opteon 2P50 outside data centers, including in electric vehicle batteries, where leaks would presumably be more difficult to contain.
“The rule of thumb is that refrigerants leak,” Lenny Siegel, the director of Chips Communities United, a CHIPS Act watchdog group that also opposes the approval of Opteon 2P50, explained to me. “They can leak when they’re being made; they can leak when they’re being stored; they can leak when they’re being transported; they can leak when they’re being installed in tanks or removed from tanks. My refrigerator might last 20 years, but the electronics in a data center will probably be obsolete in a few years, and there’s been no discussion of how they’re going to make sure that there’s no release [of Opteon 2P50].”
Siegel mentioned his refrigerator because Opteon 2P50 is also a hydrofluoroolefin, or HFO — a class of compounds that break down in the atmosphere in a matter of weeks and are used as alternatives to older CFCs and HFCs, refrigerants that deplete the ozone. In addition to fueling the argument that it isn’t a PFAS, this characteristic is also why the company goes further to say it can actually help fight global warming. It has a far lower warming potential than traditional coolants, which Chemours said in its sustainability report released last week is helping it to reduce its scope 3 emissions.
But this is also where things start to get tricky. Remember those two ultra-short-chain PFAS Opteon 2P50 breaks down into: PFPrA and TFA? The pair are “known for their high mobility in water and difficulty to contain and remediate, resulting in their ubiquitous presence, widespread contamination, and substantial risks to human health and the environment,” Earthjustice said in its public comment. The organization further cites the European Chemicals Agency’s June decision to classify TFA as a reproductive toxin that “may damage fertility.”
“Assuming [Opteon 2P50 is] used, it will be released into the environment, go into the upper atmosphere, and break down and spread TFA on the landscape,” Siegel told me. Its main pathway into humans is through uptake by plants that we or other animals eat; TFA has been detected across food types, one study found, including in bananas, tomatoes, muffins, chicken breast, and wheat.
But Mads Sulbaek Andersen, a professor of chemistry at California State University, Northridge, whose research on TFA Earthjustice cites in its filing to the EPA, told me he thinks the opposition has blown the danger way out of proportion. “You will find people in industry saying sometimes that TFA is not a problem because it is not toxic,” he said. “I would say that’s not quite correct. Everything is toxic [in large enough amounts], but the risk that we see from TFA is not worth worrying about.”
Sulbaek Andersen is a panel member for the United Nations Environmental Program under the Montreal Protocol, which recently concluded an update to the parties on the state of the environment and the gases being used as replacements for the old ozone-depleting CFCs. During its review, which projected how TFA is likely to accumulate in the environment through 2100, “the conclusion is that the risk to environmental health and human health is de minimis,” he told me. He further told me that he thinks the European Chemicals Agency made a mistake in defining TFA as toxic at all, basing its decision on what he described as a “problematic study” with “laboratory issues,” and that Earthjustice, by extension, is overreacting to the Opteon 2P50 filing. (Some research has linked TFA exposure to eye and skeletal abnormalities in rabbit offspring, though animal studies are not necessarily indicative of toxicity to humans.)
“They’re saying that the EPA shouldn’t approve it because it’s a PFAS? That statement is nonsense,” he told me when I asked him about it. “You can decide that you don’t want any PFAS [approved], but that’s not founded in science — that’s just opinion.”
Not everyone in his field agrees. Hans Peter Arp, an environmental chemist at the Norwegian Geotechnical Institute, is the lead author of a 2024 paper that describes the buildup of TFA as an irreversible “global threat.” “It’s just a matter of time before PFAS from different sources accumulate to levels that are more concerning,” he told me. The pharmaceutical and semiconductor industries are other sources of atmospheric TFA, and it’s yet unclear how a compound like Opteon 2P50 could add to that contamination if it is widely adopted in data centers. A single immersion tank holds around 1,270 liters of fluid, and a hyperscale data center could house hundreds of tanks.
“That’s what I’m worried about in all my discussions of TFA and PFAS,” Arp went on. “That this new Opteon will be one more source, of many sources, that will lead to an accumulation that is a permanent, fixed thing. It’s not like we stop using it and it goes away. It doesn’t work like that.”
Real questions remain about the practical use of Opteon 2P50, too. As Earthjustice’s filing notes, all the data from Chemours about its use and efficiency are based on small-scale tests, and there is still “no indication it can be used at scale in data centers.” A 2016 study by the Lawrence Berkeley National Laboratory that assessed a different dielectric heat transfer fluid that was functionally analogous to Opteon 2P50, though chemically distinct, and found “significant issues with the substance and deemed its use ‘not viable at this time,’” Earthjustice’s report notes.
Chemours faces substantial competition. PFAS-free hydrocarbon, CO2 and ammonia chillers, and CO2 CRAC units “are already cooling data centers in Europe and North America efficiently,” ATMOsphere, a market accelerator for clean cooling, writes in its 2025 report. Though there are some concerns that these so-called “natural refrigerants” aren’t as effective as PFAS, “I try to emphasize that if there are safer chemicals that we can use in the production, we should favor those technologies,” Arp told me. “I know I probably can’t do much about limiting data center growth,” he went on. “But we can at least try to make them in as environmentally sustainable a way as possible, such as using geothermal energy — and using cooling systems that do not require PFAS.”
Though Sulbaek Andersen insisted on avoiding the clumsy vilification of PFAS — a term that describes a molecular structure found in millions of compounds — as uniformly “bad” or “dangerous,” several U.S. states and the EU have made moves toward phasing them out. Still, given the prevailing atmosphere, Chemours’ bet on Opteon 2P50 surprised me.
But whether Opteon 2P50 is ultimately deemed unviable or quickly made obsolete by laws or competitors, it appears certain to be among the first of many data center-related chemicals and PFAS for an overtaxed and understaffed EPA to review. “I suspect there will be more chemicals coming along the pipeline,” Antezana, the Earthjustice scientist, told me, sounding weary.
Given the pressure on the EPA from the Trump administration, coupled with business-friendly exceptions for transparency around health impacts that make it difficult for watchdog groups to sound the alarm, now may be a poor time to play fast and loose with a substance that could end up in the environment forever.
As Arp, the environmental chemist, warned, the agency needs to get a decision on a chemical like Opteon 2P50 right the first time; if toxicology studies later confirm serious human health impacts of TFA, it would be too late to backtrack. “This is something we’ve gotten to too late, too often,” he said.
On British nuclear, Puerto Rican water, and the U.S. solar supply chain
Current conditions: Dolly is no longer a tropical storm, but the remnants of the system are set to drench the northern Caribbean, especially the Leeward Islands, the British and U.S. Virgin Islands, and eastern Puerto Rico • One person died and at least 14 hikers are missing in flash floods in the Grand Canyon that forced airlifts on Sunday • In the Pacific, Tropical Storm Karina is rapidly strengthening into a hurricane, but it’s unlikely to make landfall anywhere.
The United States has brokered what President Donald Trump called “the biggest oil deal in world history” with Venezuela, securing majority control over more than 65 million barrels of the South American nation’s proven supply of crude. In a post on his Truth Social network Friday evening, Trump said the agreement would “more than double American oil reserves” and “substantially lower gas prices for all Americans, long into the future, while helping to continue to set Venezuela on a course toward tremendous success and great prosperity.” Appearing on national television for a six-minute address, Venezuela’s interim President Delcy Rodríguez, who took power after the U.S. captured former leader Nicolás Maduro in a night-time raid nearly nine months ago, said the pact would allow Caracas to earn more than $209 billion in revenue and become “an energy powerhouse.” While “everyone knows our country has the biggest oil reserves in the world,” she said, “having resources underground isn’t enough.” She added, according to The Guardian’s translation: “It’s no use having our oil resources underground, only to appear in statistics or bookkeeping.” The deal is good news for the string of U.S. oil refineries on the Gulf coast that were designed for the heavy crude that comes out of Venezuela. As it stands, my colleague Matthew Zeitlin wrote last week, “America’s oil refineries are going all out.”
For all the fears stirred up by Central Intelligence Agency Director John Ratcliffe’s recent surprise visit to Moscow — remember, the last two times an American spy chief went to Russia, it was to try to dissuade the Kremlin from invading Ukraine or commit the first war-time nuclear bombing since World War II — the country doesn’t seem particularly ready to, as The Wall Street Journal reported, risk war with Washington by attacking a North Atlantic Treaty Organization country. Russia’s gasoline production fell to about 70% of domestic consumption levels in August following a series of Ukrainian drone attacks that forced major refineries offline, two industry sources told Reuters.
In June, New York led Northeast states in filing a lawsuit against the Trump administration, challenging the deals the Department of the Interior struck with offshore wind developers to pay out billions in taxpayer-funded “settlements” in exchange for abandoning the already-stalled turbine projects. Now California has filed its own lawsuit over what Attorney General Rob Bonta called the administration’s “blatantly unlawful” buyout of wind leases off the state’s coast. “The Trump administration’s backroom buyout with Golden State Wind to stop offshore wind development in favor of gas and oil drilling is, unfortunately, a classic playbook for them to line the pockets of their Big Oil donors,” Bonta said in a statement. “Let’s be clear: California will continue to aggressively fight back against the Trump administration’s outrageous abuse of taxpayer dollars to abandon offshore wind investments that could have delivered union-paying jobs and reliable clean energy to Californians.” The California Energy Commission, which joined the lawsuit, called the Interior Department’s efforts to curb offshore wind development “reckless” in the face of rising electricity demand. Adding to the malcontent over President Donald Trump’s most fruitful effort yet to kill off a specific clean energy sector that has drawn his ire since before he entered politics, my colleague Robinson Meyer noted earlier this month that the deals — more of which have come since the California settlement — are all for projects that were unlikely to move forward anyway.

Until 1991, the United States produced the majority of the uranium its reactors (and atomic war machine) needed. Then came “megatons to megawatts.” Under the pithily named program, the U.S. took a victory lap after winning the Cold War by agreeing to import virtually any reactor fuel Russia made from disassembled weapons. American power plants received cheap fuel, a chaotically marketizing Russia found a market for some of its most coveted materials, and the world averted nuclear apocalypse. The only problem is that, contrary to the rhetoric of the time, history didn’t end. What nearly did end was domestic production of uranium and reactor fuel as Russian imports put American suppliers out of business. Nearly four decades later, the U.S. has banned Russian imports, and the exemptions to the prohibition end in 2028. The good news is that the U.S. is stepping up. In 2025, uranium concentrate production totaled 2.1 million pounds of triuranium octoxide — the base component for reactor fuel, known as yellowcake. That, according to the latest U.S. Energy Information Administration analysis, is the most since 2017 and more than triple the volume produced in 2024. But it’s still far from enough for energy independence. U.S. power plants used nearly 47 million pounds of yellowcake in 2025, down from just under 56 million pounds in 2024. Regardless of whether all the reactors currently underway move forward, that number is going up. New supply is coming. On Friday, developer Anfield Energy told The Northern Miner that it’s seeking to raise at least $50 million in financing in the coming months to refurbish and reopen Utah’s Shootaring Canyon mill, one of only three licensed, permitted, and constructed uranium mills in the U.S.

The U.S. supply boost could also benefit the United Kingdom, which is working with Washington on spurring along its own nuclear renaissance. A new YouGov poll released Friday found nuclear power to be Britain’s preferred future electricity source, with 21% of Britons saying it should be prioritized, compared to 19% for solar and 18% for offshore wind. Just over half of the voters surveyed doubted renewables alone could provide enough electricity to meet the nation’s power demand and lower costs. That’s despite nearly 50 gigawatts of onshore wind in the development pipeline across Great Britain, according to Renewables Now.
Sign up to receive Heatmap AM in your inbox every morning:
Britons’ doubts over renewables come as England’s water network heaves under the stress of a severe “flash drought” that Bloomberg said “is showing no signs of easing,” forcing water companies to truck supplies in and call for emergency restrictions. At least 30 million now face a temporary ban on using hoses and outdoor pipes.
Nearly 200,000 households and businesses are still without steady access to running water in Puerto Rico, where drought has collided with an aging aquifer system that leaks, by some estimates, more than half its supply of freshwater. Climate change reduced rainfall in America’s most populous non-state territory by 9% between May and July of this year, according to a new study by more than 20 scientists worldwide. The conclusion, the San Juan-based Centro de Periodismo Investigativo reported, is that drought “will persist and worsen.”
Earlier this month, as my colleague Emily Pontecorvo and I reported, the Trump administration tossed solar manufacturers a lifeline, raising tariffs on imported panel components in a bid to help factories compete with imports after Republicans’ sweeping tax law eliminated the federal incentives for developers to buy American-made photovoltaics. Since then, analysts have debated whether the minimum prices set in the Department of Commerce’s policy are sufficient to spur new investments in the production of solar cells. At least one company is announcing a project. In a post on LinkedIn last week, Oklahoma City-based Nextnova Solar unveiled plans for a 2-gigawatt solar cell factory in its home state. The company expects to bring the facility online in November and begin mass production in March 2027, according to PV Tech, which noted the possibility to expand to 5 gigawatts of annual production sometime in the future.
Meanwhile, the Minnesota-based manufacturer Heliene is preparing for a trial run of panels using American-made glass. The company has 1.3 gigawatts of crystalline silicon module capacity production, and recently formed a partnership to secure more locally sourced wafers and cells. But U.S.-made glass “has so far been a key missing element,” PV Tech reported in a separate story. Heliene’s pilot run will use glass from Ohio-based Stewart Glass. “As U.S. module manufacturing has been growing, there has been no supply of non-iron content glass,” Heliene CEO Martin Pochtaruk told the trade publication. “Being able to use glass versus importing glass is also part of de-risking the geopolitics of imports from Asia, and that’s why it’s so important.”
In the U.S., we are still working our heads around building out a charging network that can comfortably keep electric cars fueled up from coast to coast with the same ease as a vehicle that can just fill up at a gas station. In China, auto giant BYD is now rolling out its ultra-fast chargers, which can restore a vehicle’s battery as quickly as you can fill up a gas tank. Just a few months ago, BYD marked its 5,000th Flash Charger deployment. Now it’s up to 10,000 across 300 different centers, InsideEVs reported last week, cribbing from the Chinese news site IT Home.
And more thoughts on the week’s most notable fights around project development.
1. Pinal County, Arizona – If you can’t build a solar or a wind farm somewhere, it’s really hard to get a data center built there too.
2. St. Joseph County, Indiana – Thousands of miles away from Arizona, a similar division is dominating the fight over whether to enact a 2-year moratorium on data centers in the county home of South Bend.
3. Ingham County, Michigan – The first solar farm fight has been resolved under Michigan’s new renewables siting law.