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:
How Team Biden learned to stop worrying and love carbon removal.

What does the new American climate policy look like?
Last week, we got a better sense. On Friday, the Biden administration unveiled a massive investment — more than $1.2 billion — that aims to create a new industry in the United States out of whole cloth that will specialize in removing carbon from the atmosphere.
As President Joe Biden’s climate law hits its one-year anniversary, the investment shows the audacity, the potential, and — ultimately — the risks of his approach to climate and economic policy.
If successful, the investment will establish a new sector of the American economy and remake another one, while providing the world with an important tool to fight climate change. If unsuccessful, then the investment could set back an important climate technology and forever link it to the fossil-fuel industry.
The investment’s centerpiece is two large industrial facilities in Louisiana and Texas that will remove more than 1 million tons of carbon from the atmosphere every year. But the program is much broader than those hubs, encompassing more advanced and experimental approaches to carbon removal, or CDR, than the government has previously funded. The government has unleashed old industrial policy tools, such as advanced market guarantees, toward the nascent field.
Although Biden is implementing this policy, the approach will almost certainly outlive his administration. America’s support for carbon removal is strongly, perhaps surprisingly, bipartisan. The new hubs and the other policies announced last week were funded by the bipartisan infrastructure law or by other bipartisan legislation.
Given all that, it’s worth it to spend some time on these investments to better understand how they work and what they might mean for the future of the American economy.
Let’s start here: Yes, we will probably need carbon dioxide removal, or CDR, to meet the world’s and the country’s climate goals.
This wasn’t always clear. When I started as a climate reporter in 2015, carbon removal was taboo, something that only climate deniers and other folks who wanted to delay decarbonization brought up. An influential Princeton study from earlier in the decade had concluded that carbon removal — especially capturing carbon in the ambient air, a strategy called direct air capture, or DAC — would never pencil out financially and that it would always be cheaper to reduce fossil-fuel use rather than suck carbon out of the sky.
But in 2018, the Intergovernmental Panel on Climate Change made a startling announcement: So much carbon dioxide had accumulated in the atmosphere that it would be virtually impossible to keep global warming below 1.5 degrees Celsius without carbon removal.
The IPCC studied global energy models and found that even in optimistic scenarios, humanity would release too much carbon by the middle of the century to keep temperatures from briefly rising by more than 1.5 degrees Celsius. But if we began removing carbon from the atmosphere, then we could avoid locking in that spike in temperatures for the long term. That is, in order to hit the 1.5-degree goal by 2100, humanity must spend much of the 21st century removing carbon from the atmosphere and sequestering it for thousands of years.
We need carbon removal, in other words, not so we can keep burning fossil fuels, but to deal with the fossil-fuel pollution that is already in the atmosphere.
Get one great climate story in your inbox every day:
This change was only possible because CDR’s costs were falling. A few months earlier, a company called Carbon Engineering had announced that it would soon cut direct air capture’s cost to $230 a ton. (DAC was once thought to cost $600 a ton.) This suggested that in a handful of cases — a small handful — it might make financial sense to use DAC instead of decarbonizing a particular activity.
Even so, the numbers involved in this effort are mind-boggling. This year, several thousands tons of carbon will be removed from the atmosphere worldwide, at a cost of $200 to $2,000 a ton, according to one industry expert. Perhaps 100,000 tons of carbon have ever been removed from the atmosphere by a human-run process, according to CDR.fyi, a community-run database.
But by 2050, in order to hit the IPCC’s targets, humanity must remove about 5 billion tons a year at a cost of roughly $100 a ton.
For context, the global shipping industry moves about 11 billion tons of material each year.
In other words, in the next three decades, humanity must perfect the technology of CDR, find a way to pay for it, and massively scale it up to the degree that it captures roughly half of the amount of material that travels via oceanborne trade today. And it must do this while decarbonizing the rest of the energy system — because if we fail to bring fossil-fuel use nearly to zero during this period, then all of this will be for naught.
Q: Well, if we have to store all this carbon for a very long time, why don’t we plant a lot of trees?
A: For a few years in the mid 2010s, trees did seem like the cheapest way to pull carbon out of the atmosphere.
But the scale of the carbon problem exceeds what biology alone can fix. Since 1850, humanity has pumped 2.5 trillion tons of carbon dioxide into the atmosphere. This is nearly twice the total biomass of all life on Earth. Only geology can deal with such a massive (literally) problem. To truly undo climate change, we must put carbon back into geological storage. Plus, even if you sopped up a lot of carbon with trees, they might burn down. Then you’d be back where you started.
Yet CDR isn’t just a logistical problem.
Fossil fuel companies have long used the rhetoric of carbon removal — and its relative, carbon capture and storage, which sucks up climate pollution from a smokestack or industrial process — as an excuse to keep drilling for oil and gas. At the same time, they’ve resisted any federal regulation that would require them to actually capture carbon when they burn fossil fuels.
What’s more, the infrastructure and the expertise best-suited for carbon removal is largely in the same places that have fossil-fuel industries today. (Think of the Gulf Coast or North Dakota.) Some people who live in those places want to see decarbonization end the fossil-fuel industry forever — not transform it into something different, like a carbon management industry.
And although the technology to inject captured carbon dioxide into the ground is decades-old, concentrated CO2 can be dangerous if mishandled.
It’s not hard to imagine a world where the promise of CDR allows oil and gas companies to keep drilling and polluting, but where a lack of any binding regulation — and local pushback whenever a CDR facility is announced — means that very little carbon actually gets removed from the atmosphere. In that world, no matter how powerful CDR is technologically, the politics of CDR would make climate change worse.
Which brings us to the Biden administration’s strategy for scaling up the CDR industry. It has three components:
1. Build massive direct air capture facilities around the country.
2. A slew of new programs to boost alternative (and maybe less energy-intensive) approaches to CDR.
3. A new “Responsible Carbon Management” guideline.
In short, the administration is seeking to scale up the most straightforward carbon-removal technology, financially support other promising approaches, and then ensure it all happens in an above-board way.
The marquee announcement here are the carbon capture hubs, which were widely covered last week. The Energy Department will spend $1.2 billion on large-scale facilities in Louisiana and Texas that will use industrial processes to cleanse carbon from the ambient air. Each will remove about one million tons of carbon a year when complete.
Project Cypress, the Louisiana hub, will be run by the federal contractor Battelle in conjunction with Climeworks, a Swiss DAC company, and Heirloom, which stores carbon dioxide in concrete.
The boringly named South Texas DAC Hub will be run by Occidental Petroleum, an oil company, in conjunction with the DAC company Carbon Engineering and Worley, an engineering firm.
These are going to be the charismatic megaprojects of the CDR industry. They are meant to create clusters of expertise and infrastructure, concentrated in a geographic core, that will give rise to more innovation. You can think of them as little Silicon Valleys — or, more pointedly, little Shenzens — of carbon removal.
As goes these hubs, so goes CDR. If the hubs have an accident, or take too long to build, then the industry will struggle; if they succeed, it will have a running start. Therefore, the Energy Department has made a big fuss about how these projects should help local residents: When selecting these projects, it took the unusual step of ranking these projects’ “community benefits” as highly as their more technical aspects.
Last week, an Energy Department official was quick to point out to me that these projects have merely been selected and that neither has received any money yet. Next, the department and these hubs will negotiate binding contracts that will seek to lock in community benefits for locals. Only then will the funds flow.
What’s more interesting, though, is what’s not here. In the infrastructure law, Congress required that the Energy Department establish four DAC hubs. Only two have been announced. That’s because officials realized last year that fewer than four places nationwide had the expertise and understanding of DAC necessary to erect a massive million-ton facility on demand.
So the department set up a kind of starter DAC hub program — a series of grants that will allow cities, nonprofits, universities and companies to study the feasibility of establishing a DAC hub in their town. It gave out more than a dozen of these grants last week to companies and universities in Utah, California, Illinois, Kentucky, and more.
Officials clearly hope that these starter grants may produce more than two full-fledged DAC hub projects, which Congress can then fund at the same level as the Texas and Louisiana facilities.
Even those starter projects will specialize in DAC, though, which means that each approach will use industrial machinery to capture carbon from the ambient air and inject it underground.
But removing carbon doesn’t necessarily require DAC. It may be possible to remove carbon passively by using certain kinds of rock, for instance, or by growing lots and lots of algae. These approaches will probably use less energy than DAC, and they may even remove more carbon than DAC, but they will be harder to measure and verify, and there will be more uncertainty about exactly how much carbon you’re taking out of the atmosphere.
But federal policy has a strong pro-DAC bias. That’s not only because of the DAC hubs, but also because of the Inflation Reduction Act: Biden’s climate law pays companies $180 for each ton of carbon that they remove from the atmosphere, but it is written such that it can essentially only be used for DAC.
The department is trying to diversify away from DAC within the bounds that Congress has given. Last week, it announced that it would soon sponsor small pilot programs that use alternative technologies, including rock mineralization, biomass, and ocean-based processes. It will also fund efforts to measure and verify those techniques so as to make sure they remove a dependable amount of carbon from the atmosphere.
The Energy Department also announced that it will create a new pilot purchase program for carbon removal efforts, providing an “early market commitment” to carbon-removal companies in the same way that it provided one to COVID vaccine makers. This program, which will have an initial budget of $35 million, will use federal expertise to identify which CDR techniques are the most viable and promising, allowing a DOE purchase contract to function as a de facto stamp of approval. (Heatmap first covered the existence of this program earlier this month.)
Finally, the department will launch a separate prize for commercial DAC providers with the goal of cutting its costs down to $100 a ton.
These programs have the unfortunate name “Carbon Negative Shot,” which is meant to evoke a “moonshot” but sounds more like an overpriced product for deer hunters. We will not dwell on it any longer.
All these efforts will turn the Department of Energy into the world’s biggest public buyer and supporter of carbon removal. That lays the groundwork for the final aspect of its strategy that launched last week: a “Responsible Carbon Management Initiative.”
This is a nonbinding list of principles that any carbon-management project will have to follow: These include engaging respectfully with communities before setting up a project, consulting with local tribes, developing the local workforce and ensuring good jobs, and monitoring local air and water quality. (The department is seeking public comment on what, exactly, these principles should be.)
Eventually, the Energy Department hopes to use these principles to provide “technical assistance” to projects that meet the guidelines. It will also recognize developers that have demonstrated they meet the principles.
In other words, the initiative could, over time, become a kind of soft standards-setting body for the industry — a way to distinguish good carbon-removal projects from the bad (and hopefully eliminate the bad in the first place). It will help that the same department publishing these guidelines will also be where all the funding is coming from.
Will all this work? I don’t know. But the scale of the effort is meaningful in itself, because it shows how the Biden administration approaches the task of erecting an industry de novo. If there’s such a thing as Bidenomics, this is what it looks like: a place-based development strategy that admires industrial clustering, supports domestic supply and demand, and applies an optimistic approach to regulation.
You can also see the risk of Biden’s approach. Decarbonization requires technical expertise and real-world know-how; in America, most of that expertise resides in the private sector. Occidental, an oil company that describes itself (optimistically) as a carbon management company, will operate one of the DAC hubs. Although it is prohibited by law from doing anything really egregious — like using the carbon that it’s capturing to drill for more oil — the Biden team cannot ensure that its heart or actions will remain pure. Occidental will be a good carbon-removal team player only so long as it benefits its bottom line.
Yet I don’t want to overstate the importance of this investment either. The vast majority of the Biden administration’s climate investment is going to cutting emissions: If anything, the Biden administration is spending too little on carbon removal, not too much. By my estimate, these programs, including the DAC hubs, will amount for 2% of the roughly $173 billion that the bipartisan infrastructure law devotes to climate or environmental projects. And when you include the Inflation Reduction Act’s climate spending — which is where most federal climate spending is in the first place — the programs discussed here drop to perhaps one percent of total climate spending, although that will depend on how many facilities use the DAC tax credit.
That is a small price for a big prize. If this funding “works,” then these investments will represent the beginning of a new industry — a carbon management industry capable of pulling millions of tons of pollution out of the sky. But even if they fail, then we’ll have learned something too: that carbon removal — and especially DAC — may in fact be unworkable, and that we should not comfort ourselves in the years to come with the hope of cleaning up the atmosphere.
“Our responsibility is to do what we can, learn what we can, improve the solutions, and pass them on. It is our responsibility to leave the people of the future a free hand,” the physicist Richard Feynman once wrote. A couple billion seems a worthy price for learning if that hand is free or not.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
On Massachusetts’ offshore headwinds, Biden’s gas rules, and Australia’s free power
Current conditions: The Pacific Northwest is getting blasted with winds of up to 70 miles per hour • Heavy snow is coming this week for the higher elevations in New England and upstate New York • San Cristóbal de La Laguna in the Canary Islands saw temperatures surge to 95 degrees Fahrenheit.

Democratic candidates swept to victory in key races with implications for climate change on Tuesday night. In Virginia, Democrat Abigail Spanberger — who vowed to push forward with offshore wind, new nuclear reactors, and fusion energy — seized the governor’s mansion in the first major race to be called after polls closed. In New Jersey, Democrat Mikie Sherrill, who campaigned on building new nuclear plants and pressing the state’s grid operator, PJM Interconnection, to cut electricity prices, trounced her Republican opponent. In New York City, Democrat Zohran Mamdani, who said little about energy during his campaign but came out in the last debate in favor of nuclear power, easily beat back his two rivals for Gracie Mansion. Yet the Georgia Public Service Commission's incumbent Republican Tim Echols lost his race against Democrat Alicia Johnson, a defeat for a conservative who championed construction of the only two nuclear reactors built from scratch in modern U.S. history. In what one expert called a sign of a “seismic shift” on the commission, Peter Hubbard, another Democrat running to flip a seat on the commission, also won.
At a moment when the Trump administration is “disassembling climate policy across the federal government,” Heatmap’s Emily Pontecorvo wrote, “state elections are arguably more important to climate action than ever.”
A federal judge in Washington ruled Tuesday that the Trump administration can reconsider the Biden-era approval of SouthCoast Wind off the coast of Nantucket, Massachusetts. The decision, reported in The New York Times, is a setback for the joint venture between EDP Renewables and Engie, and handed the White House a victory in what we’ve called here the administration’s “total war on wind.” Judge Tanya S. Chutkan of the U.S. District Court for the District of Columbia ruled that the project developers would not “suffer immediate and significant hardship” if the Department of the Interior’s Bureau of Ocean Energy Management were allowed to reevaluate the project’s construction and operation permits.
Get Heatmap AM directly in your inbox every morning:
Meanwhile, the U.S. Court of Appeals for the D.C. Circuit upheld Biden-era Department of Energy efficiency rules for gas-fired residential furnaces and commercial water heaters in a ruling that rejected the gas industry’s challenge on Tuesday. “Overall, we find that DOE’s economic justification analysis and conclusions were robust,” the panel ruled, according to Bloomberg Law. The decision will maintain the status quo of how the agency enforces energy efficiency rules for the appliances. Under standards updated in 2021 and 2023, the Biden-era bureaucrats proposed raising efficiency levels to 95% for furnaces and using condensing model designs to heat water.
White House budget officials pressed the Environmental Protection Agency to expand its rollback of tailpipe regulations this summer as the agency sought to repeal the foundational policy that undergirds federal climate rules, E&E News reported. Documents the green newswire service obtained showed the White House Office of Management and Budget pushed the environmental regulator to weaken limits on vehicular pollution, including soot and smog-forming compounds in addition to planet-heating carbon. The EPA initially pushed back, but the documents revealed the staffers at OMB demanded the agency pursue a more aggressive rollback.
Australia launched a new plan to force energy companies to offer free electricity to households during the day to use excess solar power and push the grid away from coal and gas. The policy, called the “Solar Sharer” plan, aims to take advantage of the country’s vast rooftop solar panels. More than 4 million of Australia’s 10.9 million households have panels, and the capacity has overtaken the nation’s remaining coal-fired power stations. The proposal, the Financial Times reported, would also extend the benefits of distributed solar resources to the country’s renters and apartment dwellers.
For years, nuclear scientists have dreamed of harnessing atomic energy from thorium, potentially shrinking radioactive waste and reducing the risk of weapons proliferation compared to uranium. In the West, that has remained largely a dream. In China, however, researchers are vaulting ahead. This week, Chinese scientists announced a major breakthrough in converting thorium to uranium in a reactor. “This marks the first time international experimental data has been obtained after thorium was introduced into a molten salt reactor, making it the only operational molten salt reactor in the world to have successfully incorporated thorium fuel,” Shanghai Institute of Applied Physics of the Chinese Academy of Sciences said in a statement.
Rob and Jesse touch base with WeaveGrid CEO Apoorv Bhargava.
Data centers aren’t the only driver of rising power use. The inexorable shift to electric vehicles — which has been slowed, but not stopped, by Donald Trump’s policies — is also pushing up electricity use across the country. That puts a strain on the grid — but EVs could also be a strength.
On this week’s episode of Shift Key, Rob and Jesse talk to Apoorv Bhargava, the CEO and cofounder of WeaveGrid, a startup that helps people charge their vehicles in a way that’s better and cleaner for the grid. They chat about why EV charging remains way too complicated, why it should be more like paying a cellphone bill than filling up at a gas station, and how the AI boom has already changed the utility sector.
Shift Key is hosted by Robinson Meyer, the founding executive editor of Heatmap, and Jesse Jenkins, a professor of energy systems engineering at Princeton University.
Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, YouTube, or wherever you get your podcasts.
You can also add the show’s RSS feed to your podcast app to follow us directly.
Here is an excerpt from our conversation:
Robinson Meyer: In your experience, are consumers willing to make this deal, where they get some money off on their power bill in order to change how their car works? Because it does seem to include a mindset change for people, where they’re going from thinking of their car as a machine — I mean, this is part of the broader transition to EVs. But there’s an even further mindset shift that seems to me like it would be required here, where you go from thinking about your car as a machine that you wholly own — that enables your freedom, that is ready to drive a certain amount of miles at any time — to a machine that enables you to have transportation services but also is one instantiation of the great big cloud of services and digital technologies and commodity energy products that surround us at any time.
Apoorv Bhargava: Yeah, I mean, look, I think we have seen faster adoption rates than any other consumer-side resource participating in energy has. So I feel very good about that. But ultimately, I think of this as a transition to the normal experience for folks who are going through what is a new experience altogether.
Again, similar to my cell phone plan, if this was just offered to me as a standard offering — you buy an EV, your utility offers you a plan, it’s called the EV plan — in the same way that we have EV time-of-use rates, quote-unquote. If you’re just offered an EV plan where it’s exactly the same thing — I’m going to make sure you’re fully charged every night in the way you want it to be charged, with the cleanest, cheapest, most reliable charging possible, and it’s just being taken care of.
I think what’s so hard for most folks to grok, is that the way this experience works is it’s supposed to be completely frictionless, right? You’re really supposed to not think about it. It’s actually only in the few moments where you need to change your 99% behavior to the 1% behavior — where you’re like, Oh, I need to go to the airport, or, Oh, I need to go on a road trip. That’s where you need to think about it. It’s flipped from thermostat management programs where you actually need to think about it actively in the moments where the grid is really strained.
Where we’ve overinvested, in my view —and this is a controversial view — we’ve overinvested in trying to make EVs be like gas stations or like the gas station model. We keep talking about it all the time. We’ve over-talked about range anxiety. The fact of the matter is 80% of charging still happens at home. Even in the long run, 30% of charging will happen in the workplace. 50- plus-percent will happen at home. It’s very little charging that’s gonna happen on fast charging. But we’ve talked so much, ad nauseam, about fast charging that we’ve actually forgotten that underpinning the iceberg of the electrification cost is the grid itself. And never before has the grid been so strained.
Mentioned:
Rob on how electricity got so expensive
Utility of the Future: An MIT Energy Initiative response to an industry in transition, December 2016
Previously on Shift Key: Utility Regulation Really Sucks
Jesse’s downshift; Rob’s upshift.
This episode of Shift Key is sponsored by …
Hydrostor is building the future of energy with Advanced Compressed Air Energy Storage. Delivering clean, reliable power with 500-megawatt facilities sited on 100 acres, Hydrostor’s energy storage projects are transforming the grid and creating thousands of American jobs. Learn more at hydrostor.ca.
Uplight is a clean energy technology company that helps energy providers unlock grid capacity by activating energy customers and their connected devices to generate, shift, and save energy. The Uplight Demand Stack — which integrates energy efficiency, electrification, rates, and flexibility programs — improves grid resilience, reduces costs, and accelerates decarbonization for energy providers and their customers. Learn more at uplight.com/heatmap.
Music for Shift Key is by Adam Kromelow.
The self-described “ecosocialist” ran an ultra-disciplined campaign for New York City mayor. Once he’s in office, the climate issue could become unavoidable.
Zohran Mamdani, the New York state assemblyman, democratic socialist, and Democratic nominee, was elected mayor of New York City on Tuesday night.
Many factors fueled his longshot rise to Gracie Mansion — a congested primary field, a gleam-in-his-eyes approach to new media, and an optimistic left-wing worldview rendered newly credible by global tumult — but perhaps above all was a nonstop, months-long performance of bravura message discipline. Since the Democratic primary began in earnest earlier this year, Mamdani has harped in virtually every public appearance on what he has described as New York’s “affordability crisis,” promising to lower the city’s cost of living for working-class residents.
He hammered that message even as the election required him to play a shifting set of roles. During the primary, he set himself apart from a field overflowing with progressives by showcasing his differences with the Democratic Party. During the general election, he became the consummate Democrat, earning the votes of the party’s most loyal voters even as the former governor and one-time old-guard Democrat Andrew Cuomo ran an independent bid. Fittingly, Mamdani’s victory speech Tuesday night alluded to and remixed lines from socialists and liberal Democrats alike — including Cuomo’s father, New York’s former governor Mario Cuomo.
“A great New Yorker once said that while you campaign in poetry, you govern in prose,” Mamdani said, paraphrasing the elder Cuomo. “If that must be true, let the prose we write still rhyme, and let us build a shining city for all.”
So given all the notes he struck during the campaign, it is revealing to consider those Mamdani left unplayed. One in particular stands out: Throughout the long mayoral campaign, Mamdani rarely spoke about climate change — often doing so only when directly asked.
This might not seem meaningful on its face. Mamdani had a lot of issues he could focus on, after all. (He also spoke intermittently about, say, K-12 education, even though as mayor he will oversee the nation’s largest school district.)
But in light of his biography, Mamdani’s relative reticence on climate change stands out. During his early career in the state legislature, Mamdani defined himself in part through his climate activism, and by his view that New York should be “leading the country in our fight against the climate crisis,” as he said in a 2022 press release. He helmed some of the most aggressive recent activist efforts to shut down, block, and replace fossil fuel infrastructure in Gotham. They provide a window into where his mayoralty could go — and also illustrate the fraught politics of climate change in Year 1 of Trump 2.0.
From his first days in the New York State Assembly in 2021, Mamdani placed himself at the forefront of the debate over the future of fossil fuels in New York’s energy system. “When I ran for this office, it was on a platform of housing, justice, and energy for all,” he said in a statement soon after his election.
Many of his biggest policy proposals as a legislator focused on climate change. He backed the Build Public Renewables Act, a bill that empowers New York’s state power agency to develop wind and solar projects in order to meet the state’s climate goals. He resisted NRG Energy’s push to replace an aging natural gas peaker plant in Astoria, Queens, with a newer power plant that would still burn gas. And he opposed the expansion of natural gas pipelines into the state while cosponsoring the Clean Futures Act, which would, he said, ban all new natural gas power plants across New York.
Climate change was the issue, he said, at the very heart of his political identity. In July 2022, after the state assembly expired without a vote on the Build Public Renewables Act and amid a heat wave in New York, he called for a special session to pass the bill, deeming climate change a “human catastrophe.”
“There are a number of bills that I would love to pass tomorrow. I’m not calling for a special session for all of them,” he told Spectrum News. “The reason we have to call for this one is because climate change is not waiting.”
In its fight against the Queens power plant, his legislative office — working alongside the Stop NRG Coalition, an alliance of local residents, the Democratic Socialists of America, and traditional environmentalists such as Earthjustice and the Sierra Club — called 36,000 households and sent more than 7,800 postcards asking residents to reject the plant, Mamdani later said. Ultimately, locals filed more than 6,000 comments to oppose the proposed plant; when the New York Department of Environmental Conservation ultimately denied a key permit in October 2022, Mamdani claimed victory.
He was also clear about who had lost that fight: big corporations and fossil fuel-aligned capitalism. “This shows when we organize against corporations that put capital over the collective, we can win a world where we all live with dignity,” he said. “Stopping the Astoria power plant is an amazing victory towards a habitable planet and the clean future we all deserve.”
Many of Mamdani’s other climate efforts were ultimately successful. The Build Public Renewables Act passed in April 2023 as part of the state budget and was signed into law by Governor Kathy Hochul. The state has not passed the Clean Futures Act, although regulators have rejected other proposed fossil-fuel power plants across the state, citing its 2019 climate leadership law.
In a little-watched May 2021 video that gives a concentrated dose of Mamdani’s political vision at the time, he described himself not as a socialist, but as a “proud ecosocialist” who believed that electricity should be treated as a “public good.”
“Did you ever wonder why New York state only gets 5% of its energy from wind and solar?” he asked in the video. “It’s because of one word: capitalism.” The way to fight that capitalistic hold on energy production, he said, was with public power — government ownership and development of zero-carbon generation.
Even after those victories, Mamdani remained a proud champion of climate issues. As recently as a year ago, he suggested that activism and agitation around climate change was a key way that progressives could differentiate themselves from Trump in the eyes of the working class. At a rally in late November last year, shortly after a drought resulted in a rare brush fire that consumed 2 acres of the city’s beloved Prospect Park, he exhorted the New York Power Authority, or NYPA, to move faster to develop its pipeline of renewables projects — and framed credible climate action as essential to countering Trump’s rise.
“The climate crisis does not care about any of the reasons that are usually given so much weight in Albany. It doesn’t care if you want to blame the supply chain. It doesn’t care if a private company says it has reduced profitability. It cares only if you build out renewable infrastructure,” he said.
“If you want to know how to defeat the Donald Trump far-right movement, it’s by showing we actually have a workable alternative,” he continued. “Because if working class people can’t breathe the air, if they can’t afford to live in the city they call home because they can’t find a union job, and if they look around at their favorite parks being on fire, why would they trust us?”
“It is time to show them why,” he concluded. “It’s time for the Build Public Renewables Act.”
Mamdani has continued to push for NYPA to accelerate its renewables construction — he posted a video of the same rally to his Instagram feed in September, encouraging his followers to file public comments with New York state.
As recently as February 2025, he described New York City as facing an “existential moment of our climate crisis” at a candidate forum, and said that enforcing the city’s climate laws would require “taking on the real-estate industry.”
But in the months since, his earlier bold rhetoric — casting practical concerns as no object when it comes to climate action — has faded, and he has evinced more sympathy for landlords and homeowners who may bear decarbonization’s costs. He still describes climate change in existential terms, but has become far less likely to bring it up unbidden in his own speeches and media appearances.
As a major party mayoral candidate, too, Mamdani largely avoided framing climate action as a necessary antidote to Trumpism. When seeking to contrast himself with the president, he focused almost entirely on cost of living issues. In a Fox News appearance in October, Mamdani addressed Trump directly and said that he would work with him to address New Yorkers’ cost of living.
His campaign website’s only stated climate proposal is a “Green Schools” plan to renovate 500 public schools, turn 500 asphalt schoolyards into green spaces, and construct “resilience hubs” at 50 schools. Speaking with The Nation in April — in one of his few recent long-form interviews on climate policy — Mamdani set that plan within his broader campaign, saying “climate and quality of life are not two separate concerns. They are, in fact, one and the same.” Schools, he said, offer “an opportunity for comprehensive climate action.”
But his website has few other details about what climate actions he might like to pursue once he takes office as mayor. Indeed, the candidate who once blamed capitalism for New York’s failure to build renewables is now promising to establish a “Mom-and-Pop Czar” to cut fines on small businesses and speed up permitting. It also gives few clues about how Mamdani would handle decarbonization’s inevitable trade-offs. If achieving a faster renewables buildout led to higher energy prices for consumers and small businesses, what would he do?
Even in situations where his slogans could reasonably connect to some climate benefit, Mamdani did not complete the handshake. His website does not mention the pollution benefits of fast and free bus service, for instance, even though free transit in other campaigns has been described as a climate policy. His 25-minute victory speech, delivered to a jubilant crowd on Tuesday night, did not mention climate change at all.
Regardless of what he’s said, Mamdani will be required to take big actions on climate policy as mayor. The most significant will likely arise from an ordinance called Local Law 97, which requires New York City’s large buildings to reduce their greenhouse gas emissions by 2050. That law’s strict new set of pollution caps and penalties will start in 2029, and many landlords are set to pay big fines. During the second mayoral debate, Mamdani repeated that the “climate crisis is one of the most pressing issues facing this city,” and said he wants the law’s fines to be enforced. But he also added that “the city should make it easier for buildings to comply.”
Mamdani has also argued that the city and state should renew a set of tax breaks to make it cheaper for large residential buildings, like condos and co-ops, to meet the law’s targets, and has proposed creating a “one-stop shop” for Local Law 97 compliance in the city governance, according to his debate remarks and a memo about homeowner policy released by his campaign.
In replacing climate change with cost of living, Mamdani has moved closer to what appears to be an emerging consensus among his party. Recent autopsies of the 2024 election have argued that voters believed Democrats were too focused on issues like climate change and not enough on affordability or inflation. Mamdani’s relentless focus on near-term costs — and his embrace of clear, actionable, and frankly non-climate-related slogans — suggests that one young ecosocialist might now agree with them. His ultimate victory suggests that it wasn’t a bad gamble.