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These 7 neighborhoods are competing visions of a more sustainable future.

I’m a serial cheater, emotionally, on New York City. As much as Queens is my home, one of my favorite ways to lose track of time is by going down the Zillow rabbit hole and imagining all the other lives I could live somewhere else. If I had $2 million, would I move into a houseboat to live out my Sleepless in Seattle dreams? (You laugh, but at least a floating home is floodproof!). Or maybe I’d go to California to be closer to my extended family? (Never mind — I’d never be able to afford the fire insurance).
Recently I’ve become especially captivated by “intentional communities,” of which there are thousands worldwide and hundreds in the United States alone. These are experimental master-planned neighborhoods that revolve around shared values that often pertain to things like sustainability, communal living, green spaces, and minimizing individual impact — things that might be necessary to adopt in some form on a wider scale in the coming years.
Some of these communal neighborhoods are pretty out there (think aquaponics that runs off a “VillageOS”). Others are so alluring that without even realizing it, I found myself browsing their availability pages. Oops — don’t tell New York.
Here are a few of the innovative neighborhoods that caught my eye:
Location: Utrecht, Netherlands

You’ve joked about running away to go live in the woods, but what if you didn’t have to make the choice?
Designed by Stefano Boeri of Verticle Forest fame and Roberto Meyer of the Dutch firm MVSA Architects, Wonderwoods is a 200-apartment, two-tower project in Utrecht, the fourth-biggest city in the Netherlands. The pair of structures, set to open in 2024, look in the renderings like something nature has reclaimed. But the 10,000 plants and 300 trees that will eventually cover the buildings’ balconies, roofs, and facades aren’t just there to look cool.
By decking out Wonderwoods in the equivalent of one hectare of forest, the designers aim to maximize the known benefits of urban tree planting: Plants suck up CO2, help filter out environmental pollutants, and can even generate microclimates that will be important in a warming world (the cooling effects of plants will also help reduce the energy demand of air conditioners).
Wonderwoods’ co-designer, Boeri, has been called “perhaps the most famous name in green architecture,” and he is both prolific and influential: The Dutch project is just one of the dozens of plant-coated buildings that have been, or are being, constructed around the world.
Not all of these experiments have been successful — rumor has it the Qiyi City Forest in Chengdu is overgrown and bug infested — and some scientists have downplayed the greenhouse gas-mitigating effects of so-called biophilic design. Still, if we’re to survive in a hotter, more concrete-covered world, we’ll need to bring plants along with us.
Would I live here?: I’ve always been jealous of people who junglefy their living spaces with lots and lots of plants (Hilton Carter, please decorate my home!). Tragically, I don’t always have the greenest thumb — I’m an overenthusiastic waterer — but the good news is, Wonderwoods has a team of rappelling gardeners who will maintain the exterior vegetation for you. Getting to enjoy the lushness of a rural forest in the heart of urban Europe without having to do any of the work? Count me in — I’d live here for sure.
Live, Work & Play at Wonderwoodswww.youtube.com
Location: Tempe, Arizona

Forget electric vehicles: Residents of Culdesac, a rental community just across the river from Phoenix in Tempe, Arizona, are “contractually forbidden from parking a vehicle within a quarter-mile radius of the site.”
While that might sound practically un-American to some, it’s a paradise for others. The 17-acre, $170-million project includes 761 apartments, a light rail stop (which is free with residency), communal courtyards, a coffee shop, restaurant, gym, grocery store, soon-to-open coworking space, car-share pick-up and drop-off, and, yes, visitor parking.
Culdesac isn’t the only car-free community in America, as Jalopnik reports. But while the communities tend to be popular, especially with young professionals (40% of the people on Culdesac’s opening waitlist were from outside of Arizona), “these kinds of developments often aren’t legal to build in large parts of the country due to mandatory parking minimums,” Jalopnik adds.
That doesn’t deter its founders. The long-term “vision of Culdesac,” Ryan Johnson, Culdesac’s chief executive, told The New York Times, is to eventually “build the first car-free city in the U.S.”
Would I live here?: One of the biggest deterrents against leaving New York City is being saddled with car payments — not to mention that my husband doesn’t drive. Despite being located in the heart of the Phoenix sprawl, Culdesac seems genuinely committed to making a car-free lifestyle work for its residents, offering benefits like free rides on the metro, bike parking, $5-an-hour car-sharing, complimentary Lyft Pink, and rentable Bird scooters on site. Coming from the New York real estate market, its prices also seem reasonable — available one-bedroom units start at $1,390 a month. I know because I was tempted enough to look. If only I liked the heat a little more …
Culdesac Tempe: The First Car-free Community Built From Scratch in the USwww.youtube.com
Location: Vienna, Austria

Vienna is one of the fastest-growing cities in Europe, which has created a massive demand for housing. In order to meet the demand, Vienna is building a city within a city — and taking it as an opportunity to do things right.
With over 11,000 new homes (including the world’s second-tallest timber building), the neighborhood of Aspern Seestadt is nearly net-zero, relying on technology and cutting-edge construction techniques to lower its footprint. Excess heat and electricity in one building can be sent to another, for example, while 80% of its residents reportedly travel by bike, foot, or public transit.
But what sets Aspern Seestadt apart from other green, pedestrian-friendly communities around the globe is its emphasis on centering women’s and families’ needs. For one thing, all of the streets and public spaces in the neighborhood are named after women, but the attention goes beyond the symbolic — the pavement is also wide to accommodate strollers, and ramps are included alongside staircases; parks and other gathering spaces have plentiful public toilets; pram parking and storage are readily accessible. There are also extra safety measures, like more lights in dark spaces, abundant alarms and assistance buttons, and extra guards during nighttime hours.
Buildings in Aspern Seestadt also mix housing with nurseries, shops, and coworking spaces so “women, as well as men, can … better reconcile professional and personal life,” Germany’s Gettotext.com reports. It’s a model more intentional communities should take note of.
Would I live here?: Vienna has repeatedly been cited as the city with the highest quality of life in the world although the picture might not be as rosy if you aren’t Austrian. The expat resource website InterNations lists Vienna as the “worst-rated city” in the world when it comes to the “ease of settling in” due in large part to it also being in last place for “local friendliness.” As amazing as it’d be to be integrated into a community like Aspern Seestadt — especially, eventually, as a mother — it’d probably be terribly isolating to get the cold shoulder from my new neighbors. For the “new girl in the high school” vibes this is giving me, I’d potentially pass.
Vienna is Building a $6BN "City Within a City"www.youtube.com
Location: Barcelona, Spain

One of the major criticisms of intentional communities is that they’re not actually all that “green” since they require new construction, which in turn uses up resources and adds to emissions. Additionally, many of the neighborhoods featured in this article simply aren’t scaleable to the necessary degree; 4.4 billion people live in cities and moving all of them into net-zero villages or buildings would be next to impossible.
But what if existing neighborhoods could retroactively be made greener and more habitable? That’s the radical idea behind Barcelona’s superilles, or superblocks, which began reclaiming city streets for pedestrians back in 2013. The basic idea involves cordoning off 3x3 city blocks, diverting thru-traffic around the “islands,” and limiting the roads within the blocks to six-mile-per-hour residential traffic. This transforms the interiors of the superblocks into safe places for pedestrians to walk and kids to play; the new green spaces help eliminate the urban heat island effect and boost mental health; and the walkability encourages increased foot traffic, in turn reducing emissions.
The experiment has been an enormous success: NO2 pollution has dropped 33%; noise in superblocks dipped by 9 decibels, and local businesses have seen increased sales as residents opt to shop within walking distance, a positive illustration of the urban planning concept known as the 15-minute city.
Today, there are only six superblocks in the capital of Catalonia, but the goal is to expand the concept city-wide to potentially as many as 500. In the next decade, it aims for every resident to have a public square and a green street within 650 feet of their home.
Would I live here?: Psst, New York City, can’t you take a hint? The COVID-19 pandemic gave New Yorkers a taste of what it might be like if our city prioritized the needs of pedestrians over drivers with its “open streets” program, although most of that progress has been rolled back. Barcelona is proving we could be better if only we had our priorities in the right place. Sure, it’s a sí from me when it comes to moving to Spain, but it’d be even neater if we could bring the superblock experiment back home.
Superblocks: How Barcelona is taking city streets back from carswww.youtube.com
Location: Near Amsterdam, Netherlands

“The Tesla of Eco-Villages” might not sound quite as appealing as it once did. But if you want to live minimally but aren’t quite ready to give up your Apple Watch, then ReGen Villages might be for you.
While other projects I've highlighted reimagine urban living, ReGen Villages wants to reinvent the “neighborhood development outside of cities.” The 50-acre community of 300 homes is planned for a rural region about a half-hour drive outside of Amsterdam and aims to combine vertical farming, aquaponics, renewable energy, and waste-to-resource systems to form an almost entirely self-sustaining, closed-loop community.
But this isn’t your hippie aunt’s crunchy, off-the-grid living. Conducting the complicated system will be the “Village OS” software, which eventually will use AI to “optimize living conditions, energy use, and overall efficiency,” and even potentially communicate with other future ReGen Villages around the planet, Insider reports.
ReGen Village has run into a number of roadblocks since it was first announced — construction on the complex was originally slated to begin in 2017 but it has encountered zoning, permitting, and funding problems and its website says the company is “in [the] process of raising a Series-A round of investment” to build out the operating system to test in “pilot communities.” But if the Amsterdam location doesn’t work out, stay tuned; ReGen is a California-based company and it reports interest in the concept is high in the U.S., particularly the Northeast.
Would I live here?: I’m all for off-the-grid living but something about ReGen Villages feels a little … cult-y? Maybe it’s the all-seeing AI, or the active discouragement of owning a car while living in a rural area, but something about this whole scheme sounds like the starting premise of an Ari Aster film. I’ll keep my cell reception, thanks.
ReGen Villages - Index Award 2017 Finalistwww.youtube.com
Location: Dubai, United Arab Emirates

A desert oil state might seem like an unlikely place for a sustainable city; in 2003, the United Arab Emirates had the highest ecological footprint per person of any nation (and it’s not much better now). But as part of a region-wide effort to convince the rest of the world that climate objectives are compatible with fossil fuels, the UAE is hosting COP28 and touting lofty goals like making Dubai the city with the smallest carbon footprint in the world by 2050.
The 120-acre, $354 million Sustainable City is one of the crown jewels of that ongoing effort. Constructed 18 miles in the desert outside of Dubai by Diamond Developers, which built the city’s famous marina, the Sustainable City is intended as a model net-zero neighborhood, complete with self-sufficient greenhouses and biodomes, recycled water, solar panels, and intelligent design (the villas, home to some 2,500 residents, all face north, which the developers claim cuts air conditioning usage by 40%). Cars are banned inside the compound and a shopping plaza, complete with a mosque, serves all the residents’ needs.
Critics are highly skeptical of the Sustainable City, arguing the project is an “‘island’ of specialized consumption and lifestyle … that does not actually take on the challenge of sustainability.” Supporters, on the other hand, describe it as a “living laboratory” where developers are learning in real-time how to make habitable one of the most climate-threatened places on Earth. True, the Sustainable City might not be the solution to Dubai’s problems — at worst, it might represent another instance of the UAE’s greenwashing. But if its experiment is successful, the solutions it discovers could help inform better-living for everyone.
Would I live here?: There is a reason most of the homes on this list are variations on high-density living; dense urban housing tends to be far more energy efficient. While having your own villa in the Sustainable City would be pretty sweet, it does give the impression that this is just another gated community surrounded by all the other gated communities also touting their green bona fides in Dubai. On top of the human rights violations I’d have to turn a blind eye to in order to live in the United Arab Emirates, I’m not sure the Sustainable City would be right for me.
Sustainable City | Fully Chargedwww.youtube.comSc
Location: Austin, Texas

Bringing people in closer harmony with the Earth is the goal of many sustainable communities. Whisper Valley, a 2,000-acre development in Austin, just takes it a little more literally.
At first, Whisper Valley looks like many innovative developments popping up across America: The 7,700 homes come with solar panels, Google Nest thermostats, nearby community centers, and ample public green spaces (in this case, a massive 600-acre park that doubles as flood control). But what sets the community apart is what you can’t see: Whisper Valley sits on the largest geothermal grid in the world.
Drawing on the steady temperature of the deep Earth, geothermal is gaining popularity as a means of slashing energy costs and emissions associated with heating and cooling homes. In combination with solar panels, monthly energy bills in Whisper Valley run residents only about one dollar.
But the low energy impact and savings are not the only things that make Whisper Valley a model neighborhood for the future. Because of its reliance on geothermal energy, the community had no problem staying warm when a 2021 energy surge during the deadly Texas Snowpocalypse left millions of people without heat for days. “As extreme weather gets more destructive,” Fast Company writes, geothermal solutions like that in Whisper Valley may be “a way for communities to withstand their own version of Snowpocalypse.”
Would I live here?: The suburbanite in me loves a lot about Whisper Valley — the stand-alone energy-efficient homes, the communal gathering spaces, the emphasis on healthy outdoor-oriented lifestyles, and the charging stations that come already installed in the garages. For most Americans, the development likely represents a feasible way to lower the family footprint while not compromising on many of the things we’ve come to take for granted, such as having our own space and the freedom that comes with owning a car. As far as daydreams go, Whisper Valley is perhaps a little underwhelming compared to living in a sky-forest or a luxury villa. But in terms of places that real Americans might actually be convinced to live, Whisper Valley is as exciting as it gets.
Whisper Valley - East Austin's New Zero-Energy Capable Communitywww.youtube.com
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It is a cliché that everyone in the insurance industry believes in climate change. But the same can certainly be said of those in the mountain-guiding business.
May marks the beginning of the recreational mountaineering season on Washington’s Mount Rainier, the most popular technical climb in the country. But for many of the guide companies that take clients up the mountain, the last day of the 2026 commercial climbing season remains an ominous unknown. “We used to run a season through the end of September typically,” Jonathon Spitzer, the director of operations at Alpine Ascents, which has offered guided climbs of Rainier since 2006, told me. “For four of the last five years, we’ve ended around Labor Day or so” due to poor snow conditions on the mountain — meaning a loss of about 20% of the historic season.
In the spring and summer, when the vast majority of Rainier’s 10,000 or so annual climbers attempt to reach the summit, the weather begins to mellow, avalanche danger lessens, and crevasses remain mostly covered. But ideally the mountain should still be frozen hard. A firm snowpack provides crampons and ice axes with the best purchase, allowing climbers to stick to steep slopes without sliding, while reducing the danger of ice and rockslides. Accidents and falls increase when climbing on loose dirt, slush, and rock, as well as when navigating exposed blue glacier ice, which is normally covered in snow and otherwise extremely slick.
Yet high-mountain areas, known as the cryosphere, are warming up to twice as fast as the global average. Rainier has lost half its ice since 1896, with most of that loss occurring in recent years; three of its 29 glaciers have disappeared since 2021. Researchers last fall went as far as to assert that the 14,410-foot mountain is now 10 feet shorter than it was in 1998 due to a rocky outcropping replacing its former highest point, a mound of ice that has since melted away.
For the guides working on Rainier, the weather in April and May sets the stage for the rest of the season, when spring storms ideally dump the snow needed for the summer climbs. “It doesn’t really matter what happens in December, January, February,” Spitzer told me, since winter snow is dry and blows off the summit rather than accumulates. Alpine Ascents had guides on the summit of Rainier last week who reported that the upper mountain has a lot of snow, but Spitzer cautioned that the character of the season ahead is still uncertain. “It’s been really dry in April,” he noted.
And it’s not looking good for May, either. Temperatures in the Puget Sound region are 20 to 25 degrees above average to start the month, a kind of final exclamation point on the wickedly warm winter and ongoing snow drought across the West. The Cascade mountain basins have only around 29% of their historic median snow-water equivalent, the metric used to measure snowpack and provide insight into runoff, water availability, and the fire season ahead. Tom Vogl, the CEO of the Mountaineers, a Seattle-based alpine club that offers local climbing courses, told me that “100%, with almost no uncertainty, we’re going to have a shorter climbing season on Washington peaks this year.”
In Oregon and northern California, where Lassen Peak sits at the southern end of the Cascades’ volcanic backbone, the snow-water equivalent median is as low as 1% in places. “Mount Hood is a mess right now,” Graham Zimmerman, a professional alpinist and the athlete alliance manager at Protect Our Winters, told me.
Zimmerman was on Oregon’s highest peak in February to climb Arachnophobia, a challenging route, and he told me that on “significant sections of the south side of the mountain, up high on the final summit, we were walking on dirt.” Though Zimmerman isn’t a guide himself, many of his friends are, and for “the core season up there in June, it’s going to be pretty intense,” he predicted. “There’s not going to be a lot of ice, it’s going to be pretty dirty, and when those mountains start to thaw out, they get pretty dang crumbly, and that’s going to create a risk for those going up there.”
Think of a mountain like a scoop of Rocky Road in an ice cream cone. Fresh out of the freezer, the scoop holds its shape because everything is frozen in place — but as it starts to melt, marshmallows and nuts begin to slough down the sides.
Except on a mountain, it’s not marshmallows and nuts but avalanches and rockfall. In addition to being a life-or-death hazard in the moment — and top-of-mind for the risk-averse concessioners guiding otherwise oblivious novice clients — the debris on a warming mountain can close routes to the peak, crowding the ones that remain. “When you have a bunch of people on a route, it doesn’t make things safer,” Zimmerman said. “It makes things more dangerous because people knock stuff onto each other, and because it slows things down.”
Even as the season shortens due to inadequate snowpack, more and more people are trying to climb on an ever-smaller number of viable days. That puts additional pressure on the guides, whose clients take time off from work and pay thousands of dollars for the chance to summit within a predetermined window, even as conditions overall become more dangerous.
This strain is particularly visible in the Himalayas, where photos of the conga line headed to the top of Everest go viral every few years. This season, icefall from a glacier closed the route to the world’s highest point for more than a week, with more icefall anticipated, adding to concerns about queues.
Iconic climbs in the Alps are also a mess due to warming weather and snow shortages. Spitzer, of Alpine Ascents, used to guide on Mont Blanc from June through September, but these days, many guides in the Alps stop around July 15 and resume again in mid- to late-August, when the mountains start to firm up again, because the height of summer in Europe is so hot. “The mountains are dynamic right now,” Spitzer said, and “it’s not just here in Washington. We’re seeing it globally.”
This raises, perhaps, the question of “so what?” Mountaineering is a niche, expensive, and often elite pastime. But a low summer snowpack has knock-on effects: “We expect to see pretty significant impacts on [gateway] communities, not just from the perspective of water availability but also how that relates to guiding businesses, water sports, water recreation, and the outdoor industry, which is really big in the West,” Erin Sprague, the CEO of Protect Our Winters, told me. Rafting guides, for example, could also see abbreviated seasons, hurting their bottom line. Outdoor retailers like REI could see sales slump if it’s a particularly bad fire year, keeping people off the trails.
That’s not to mention that 75% of the West gets its water from snowpack, meaning what happens in the mountains will impact even those for whom sweat, bugs, chance bear encounters, and walking uphill for hours sounds like personal torment.
“It’s not just about mountaineers and climbers who experience the glaciers in a more direct way for recreational purposes — it literally touches every person who lives in the Northwest,” Vogl, the Mountaineers CEO, told me. “This should matter.”
It does to me. In 2021, a few weeks after the Pacific Northwest heat dome, I summited Mount Rainier with my dad on the 50th anniversary of his first climb of the mountain when he was 14. In 1971, August 12 had been the peak of the Cascade climbing season; in 2021, we climbed in a haze of wildfire smoke and almost didn’t make it to the summit because of the warm conditions on the mountain. (Vogl, who was leading a trip on the other side of Rainier around the same time, said exposed blue ice and running water were directly responsible for an accident in his group that resulted in a broken femur and required a helicopter evacuation.) Stripped down to my base layers during the descent from the peak, I watched a boulder the size of a minivan come off a rock across the glacier from where we were climbing. In other spots, we had to balance across ladders laid over crevasses so deep you couldn’t see their bottom.
Last fall, I gave birth to my daughter, and I’ve been thinking about what the mountain will look like in August 2071, on the 100th anniversary of her grandfather’s first summit and the 50th of mine. When I asked Vogl what he thought, I expected something optimistic from the CEO of an organization focused on getting people outdoors. But he sounded crestfallen. “Some of the climbs that I’ve done with my kids, I doubt that they’ll be able to do them with their kids because the conditions are going to change so dramatically,” he said.
I also asked Zimmerman, the accomplished alpinist, what he thought about the future of his sport. He meditated on the question throughout our conversation, only to circle back to it at the end. “I don’t think that people are going to stop climbing,” he finally said. “But I think that people are going to need to come to terms with the fact that we’re living in a changing climate.”
“We’re going to have to continue to adapt, to be smart, to really focus on situational awareness while we’re out there,” he went on. The sense of adventure and risk inherent to climbing won’t just be about first ascents and “going to places where people haven’t necessarily been before,” he predicted — because “even the places we have been are changing.”
Current conditions: The weekend’s polar vortex chill in New York City is over as temperatures are set to hit 70 degrees Fahrenheit today, your humble correspondent’s birthday • A winter storm blanketing the Sierra Nevadas with as much as four feet of snow on Interstate 80’s Donner Pass, the primary route between Sacramento and Reno named for the notorious 1846 episode of snowbound settlers driven to cannibalism • Days after thermometers finally slid from an almost sauna-like 118 degrees to somewhere in the 90s, thunderstorms are deluging India’s northern Uttar Pradesh state as dust storms blast cities such as Kanpur.
The Trump administration is bringing construction of virtually all new onshore wind turbines to a halt, putting as many as 165 projects on pause on the grounds that they may threaten national security. The projects, sited on private land, are being stalled by the Department of Defense, and include “wind farms which were awaiting final sign-off, others in the middle of negotiations, and some that typically would not require oversight” by the military, according to the Financial Times. Wind farms require routine approvals from the Pentagon to make sure turbines don’t interfere with radar systems. Normally these assessments are done in a few days. But developers told the newspaper they have faced a mix of setbacks since last August.
Back in December, the administration made a similar argument to justify an order to stop work on all offshore wind farms. Developers sued, and it only took weeks for federal courts to put a pause on the order. That legal strategy is now expected to play out once again on land.
Exxon Mobil and Chevron are resisting the White House’s pressure to increase oil production as the administration presses U.S. oil majors to ramp up supply to ease the demand shock from the closure of the Strait of Hormuz. In an interview with the Financial Times, Exxon’s finance chief Neil Hansen said there would be “no change” to the company’s strategy in the Permian Basin, while Chevron’s chief financial officer Eimear Bonner said “the crisis has not prompted any change to any of our plans.” The statements come days after the price per barrel of crude hit $126 last Thursday. “There’s really no need for us to shift up because we’re already up, we’re already in high gear,” Hansen said. “That doesn’t mean we aren’t looking at the potential to expand that but there are limitations.”
That doesn’t mean the industry isn’t happy to play along with Trump’s other foreign policy ventures. In a post on X last week, Bloomberg columnist Javier Blas highlighted the rapid shift of Exxon Mobil CEO Darren Woods’ views on Venezuela, which went from “uninvestable” in January” to, just four months later, “a huge resource that’s now opened up more freely to the world” where “we’ll be uniquely positioned and play an important role in bringing those barrels to market.” Meanwhile, the U.S. Senate candidate who could become the first Democrat to win statewide in Texas in 32 years has sought to ease the oil industry’s concerns about his political views. In an interview on Tejano singer Bobby Pulido’s podcast, Democratic Senate nominee James Talarico disavowed his party’s past rhetoric promising to phase out oil and gas production. “The idea that politicians in Washington think they can just eliminate this industry, eliminate these jobs, is something we had to fight against, something we have to fight against in our own party,” he said. “I’m a big fan of the renewable industry we’ve got in Texas … but it’s going to take an all-of-the-above approach.” Killing off the U.S. industry while global demand remains in effect is “not practical” and “it’d do so much damage to our state,” he said.
For all the hype over nuclear power in the United States, the Canadians are the North Americans on track to build the hemisphere’s first small modular reactor. On Friday, Ontario Power Generation’s project to expand its Darlington atomic station just east of Toronto with the world’s first BWRX-300 hit a critical milestone as the province-owned utility completed installation of the reactor’s basement some 35 meters, or about 115 feet, underground. The 300-megawatt unit was designed by GE Vernova Hitachi Nuclear Energy, the heir to General Electric’s 20th-century legacy of building the world’s fleet of boiling water reactors that today still makes up the second-largest share of all commercial fission plants after the Westinghouse-pioneered pressurized water reactor. If the reactor enters into service on time in 2029 — a big if — it will be the first on multiple counts: The first SMR from GE Hitachi. The first SMR in either Canada, North America, or the Western Hemisphere. Indeed, the first SMR in the entire democratic world, an overdue moment as China completes its Linglong-1 project in Hainan and Russia’s floating Akademik Lomonosov nuclear station remains in operation. “Ontario is building the Western World’s first small modular reactor,” Stephen Lecce, Ontario’s minister of energy and mines, said in a statement. “Ontario just executed with great precision the first foundation of a new nuclear reactor in Ontario in over 30 years. This is a major achievement as the world turns to Ontario to refurbish and build large scale nuclear on-time and on-budget.”
Ontario set a model for the rest of the region on how to pursue nuclear power despite modern development constraints. Its government-owned utility opted for the reactor over cheaper renewables and batteries by examining a whole systems-cost approach that included the transmission and back-up generation implied by a big solar and wind buildout. That ownership model also inspired neighboring New York to tap in its New York Power Authority, the largest state-owned utility the U.S., to lead the charge on building at least a gigawatt of new reactor capacity, as Heatmap’s Matthew Zeitlin explained last year. In December, as I wrote at the time, New York Governor Kathy Hochul forged a nuclear alliance with Ontario’s government to work together on issues related to building new reactors. The U.S. last year pumped $400 million into GE Hitachi’s plan to build America’s first BWRX-300 at the federally owned Tennessee Valley Authority’s Clinch River facility, as I reported for Heatmap.
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The Trump administration hasn’t abandoned its effort to kill New York’s congestion pricing scheme. On Friday, Secretary of Transportation Sean Duffy filed a notice of appeal to U.S. District Judge Lewis Liman’s March 3 decision to dismiss the administration’s lawsuit arguing that New York had overstepped its federal authorization by putting the toll in place. Before New York City implemented congestion pricing, experts warned that the apparent opposition captured in the pages of the New York Post was a paper tiger. Successful efforts to impose tolls on cars driving into dense urban areas with lots of public transit in Singapore and London had followed the same arc: Vehement blowback before the tolls take effect, contented acceptance once the charges become as normal as any other toll on the city’s roads and drivers start enjoying the easing of the gridlock. Within months of congestion pricing taking effect, polls showed that, already, support had flipped with more New Yorkers wanting to keep the tolls in place than eliminate them. But a year in, the results were hard to debate. As The City put it: “Less traffic. Faster buses. More subway riders.”
The latest legal challenge comes as New York grapples with mounting energy issues. In March, the Hochul administration proposed pushing back a key deadline in the state’s landmark decarbonization law. The state has yet to broker a final budget as legislators struggle to reach a deal with the governor’s office. Meanwhile, the state’s grid operator has issued a warning urging regulators to allow two barge-mounted power plants in Brooklyn to stay open past their planned closure.

The National Oceanic and Atmospheric Administration has ruled that The Metals Company’s deep-seabed mining application is fully compliant with U.S. regulations. On Friday, the Canadian company, which is aiming to harvest mineral-rich nodules from a 1.7-million-acre swath of the Pacific called the Clarion-Clipperton Zone, called the approval “a key milestone” toward commercialization that puts the firm on track to start producing metals by the first three months of next year. Under a new regulatory framework NOAA put out, which The Metals Company applied to use, “applicants with exploration-phase data to submit a consolidated application for both an exploration license and commercial recovery permit,” establishing “a more efficient” permitting timeline. “This determination marks an important step forward in NOAA’s transparent, rules-based process, and brings us ever closer to providing the U.S. with a new, abundant and lower-impact source of critical metals,” Gerard Barron, chairman and chief executive of The Metals Company, said in a statement. “It reflects the sheer scale of scientific, environmental, and engineering effort and expertise that have been brought to bear on this project over the last 15 years, which provides us with sufficient information to move efficiently and responsibly into commercial operations under NOAA’s oversight.” Shares in the company surged on Friday in response to the news.
In March, the United Nations’ International Seabed Authority vowed to establish a global framework for regulating deep seabed mining this year, as I wrote at the time. Japan, meanwhile, is stepping up its efforts to create its own seabed mining industry.
The kiwi disappeared from the hills around New Zealand’s capital more than a century ago. But now the country’s flightless national bird is once again living in Wellington. Last week, the Capital Kiwi Project, a charitable trust that aims to bring the birds back to the city, released its 250th kiwi. “They are a part of who we are and our sense of belonging here,” Paul Ward, founder of the Capital Kiwi Project, told Euronews. “But they’ve been gone from these hills for well over a century and we decided as Wellingtonians that wasn’t right.”
Plus news on cloud seeding, fission for fusion, and more of the week’s biggest money moves.
From beaming solar power down from space to shooting storm clouds full of particles to make it rain, this week featured progress across a range of seemingly sci-fi technologies that have actually been researched — and in some cases deployed — for decades. There were, however, few actual funding announcements to speak of, as earlier-stage climate tech venture funds continue to confront a tough fundraising environment.
First up, I explore Meta’s bet on space-based solar as a way to squeeze more output from existing solar arrays to power data centers. Then there’s the fusion startup Zap Energy, which is shifting its near-term attention toward the more established fission sector. Meanwhile, a weather modification company says it’s found a way to quantify the impact of cloud seeding — a space-age sounding practice that’s actually been in use for roughly 80 years. And amidst a string of disappointments for alternate battery chemistries, this week brings multiple wins for the sodium-ion battery sector.
One might presume that terrestrial solar paired with batteries would prove perfectly adequate for securing 24/7 clean energy moving forward, as global prices for panels and battery packs continue to fall. But the startup Overview Energy, which uses lasers to beam solar power from space directly onto existing solar arrays, thinks its space-based solar energy systems will prove valuable for powering large loads like data centers through the night. Now Meta is backing that premise, signing a first-of-its-kind agreement with Overview this week that secures early access for up to a gigawatt of capacity from the startup’s system.
Initial orbital demonstrations are slated for 2028, with commercial power delivery targeted for 2030. It’s an ambitious timeline, and certainly not the first effort to commercialize space-based solar, though prior analyses have generally concluded that while the physics check out, the economics and logistics don’t. Overview Energy thinks its found the core unlocks though: “geographic untethering,” which allows it to direct its beam to ground-based solar arrays anywhere in the world based on demand, and high-efficiency lasers capable of converting near-infrared light into electricity much more efficiently than pure sunlight.
The startup is targeting between $60 and $100 per megawatt-hour by 2035, at which point the goal is to be putting gigawatts of space solar on the grid. “It’s 5 o’clock somewhere,” Marc Berte, founder and CEO of Overview Energy, told me when I interviewed him last December. “You’re profitable at $100 bucks a megawatt-hour somewhere, instantaneously, all the time.”
Launch costs have also fallen sharply since the last serious wave of space-solar research, and Overview has already booked a 2028 launch with SpaceX. Solar power beamed from space also sidesteps two earthly constraints — land use and protracted grid interconnection timelines. So while this seemingly sci-fi vision remains unproven, it might be significantly more plausible than it once appeared. And Meta’s certainly not alone in taking that bet — Overview has already raised a $20 million seed round led by Lowercarbon Capital, Prime Movers Lab, and Engine Ventures.
Fusion startups are increasingly looking to nearer-term revenue opportunities as they work toward commercializing the Holy Grail of energy generation. Industry leader Commonwealth Fusion Systems is selling its high-temperature superconducting magnets to other developers, while other companies including Shine Technologies are generating income by producing nuclear isotopes for medical imaging. Now one startup, Zap Energy, is pushing that playbook a step further, announcing this week that it plans to develop fission reactors before putting its first fusion electrons on the grid.
Specifically, the startup is now attempting to develop small modular reactors — hardly a novel idea, as companies like Oklo, Kairos, and TerraPower have already secured significant public and private funding and struck major data center deals. Zap, however, thinks it can catch up to these new competitors in part by leveraging design commonalities between fission and fusion systems, including the use of liquid metals, engineered neutron environments, and high-power-density systems. “Fission and fusion are two expressions of the same underlying physics," Zap’s co-founder Benj Conwayby said in the press release. "This isn’t a pivot — by integrating them into a single platform, we can move faster, reduce risk, and build a more enduring company."
As the company outlines on its website, pursuing both pathways could eventually manifest in the development of a hybrid fusion-fission system, while also giving Zap practical experience interfacing with regulators and securing approvals. As The New York Times reports, the company is targeting an early 2030s timeline for its fission reactors, although Zap has yet to specify a timeline for fusion commercialization. Like so many of its peers, the company is eyeing data centers as a promising initial market, though bringing its first units online will likely require a significant influx of additional capital.
For all the concern surrounding geoengineering fixes for climate change such as solar radiation management, there’s one form of weather modification that’s been in use since the 1940s — cloud seeding. This practice typically involves flying planes into the center of storms and releasing flares that disperse a chemical called silver iodide into the clouds. This causes the water droplets within the clouds to freeze, increasing the amount of precipitation that falls as either rain or snow.
Alarming as it may sound for the uninitiated, there’s no evidence that silver iodide causes harm at current usage levels. But what has been far more difficult to pin down is efficacy — specifically, how much additional precipitation cloud seeding actually creates. That’s where the startup Rainmaker comes in. The company, which deploys unmanned drones to inject the silver iodide, says that its advanced radar and satellite systems indicate that its operations generated over 143 million gallons of additional freshwater in Oregon and Utah this year — roughly equivalent to the annual water usage of about 1,750 U.S. households. The findings have not yet been peer reviewed, but if accurate, they would make Rainmaker the first private company to quantify the impact of its cloud seeding operations.
Cloud seeding is already a well-oiled commercial business, with dozens of states, utility companies and ski resorts alike using it to increase snowfall in the drought-stricken American West and worldwide — China in particular spends tens of millions of dollars per year on the technology. Rainmaker has a particular aspiration: to help restore Utah’s Great Salt Lake, which has been shrinking since the 1980s amid rising water demand and increased evaporation driven by warmer temperatures.
In a press release, the company’s 26-year-old founder and CEO Augustus Doricko said, “With the newfound capability to measure our yields and quantify our results, Rainmaker will go forward and continue our mission to refill the Great Salt Lake, end drought in the American West and deliver water abundance wherever it is needed most around the world."
Sodium-ion batteries have long been touted as an enticing alternative — or at least complement — to lithium-ion systems for energy storage. They don’t rely on scarce and costly critical minerals like lithium, nickel, or cobalt, and have the potential to be far less flammable. The relatively nascent market also offers an opening for the U.S. to gain a foothold in this segment of the battery supply chain. But especially domestically, the industry has struggled to gain traction. Two sodium-ion startups, Natron and Bedrock Materials, both closed up shop last year as prices for lithium-iron-phosphate batteries cratered, eroding sodium-ion’s cost advantage, while the cost of manufacturing batteries in the U.S. constrained their ability to scale.
But one notable bright spot is the startup Alsym Energy, which announced this week that it has signed a letter-of-intent with long-duration energy storage company ESS Inc. for 8.5 gigawatt-hours of sodium-ion cells and modules, marking ESS’s expansion into the short and medium-duration storage market. Alsym’s CEO, Mukesh Chatter, told me this represents the largest deal for sodium-ion batteries in the U.S. to date — although it’s not yet a binding contract. Notably, it came just a day after the world’s largest-ever order for these batteries, as CATL disclosed a 60 gigawatt-hour sodium-ion agreement with energy storage integrator HyperStrong. Taken together, these partnerships suggest the sector is finally picking up durable traction both domestically and abroad.
ESS, however, is facing its own operational headwinds, nearly shuttering its Oregon manufacturing plant last year before securing an unexpected cash infusion and pivoting to a new, longer-duration storage product. Chatter remains exuberant about Alsym’s deal with the storage provider, however, telling me it represents a major proof point in terms of broader industry acceptance and an acknowledgement that “the benefits [sodium-ion] brings to the table are significant enough to overcome any stickiness” and hesitation around adopting new battery chemistries.
Chatter said that interest is now pouring in from all sides, citing inquiries from lithium-ion battery manufacturers, utilities, and defense companies and highlighting use cases ranging from data centers to apartment buildings and mining operations as likely early deployment targets.