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A conversation with former congressman Bob Inglis.

Bob Inglis was snorkeling in Australia’s Great Barrier reef in 2008 when he had what he called “an epiphany.’’
The then-Republican congressman from a very conservative district in South Carolina had scoffed at climate change throughout his two terms in the House, but his certainty had begun to give way four years earlier when his son told him, upon turning 18, that he needed to “clean up his act on the environment.’’
The comment stung. Inglis was still thinking about it in 2008 during a congressional trip to Antarctica, where he saw researchers extract ice cores that showed steadily rising levels of carbon dioxide since the Industrial Age began. His belief that climate change was a hoax began to weaken.
It was on another fact-finding trip that Inglis toured the Great Barrier Reef. Alongside the Australian oceanographer Scott Heron, he saw that the once-colorful reef was being bleached and killed by warmer, more acidic waters. It was visible proof of the destructive power of climate change.
Heron, a fellow Christian, talked about the need to save the reef and the planet with such passion, Inglis said, that “I could see that he was worshipping God in what he was showing me. My metamorphosis was complete. I decided that I was ready to act.’’
The next year, Inglis co-sponsored legislation to impose a tax on carbon emissions. That “heresy’’ did not go over well in his district, and he was crushed in the 2010 primary, 71% to 29%. (The bill, meanwhile, never made it out of committee.) “I knew that I was making the right choice,’’ he said. “It’s a choice that I’d make again.’’
His newfound commitment to addressing climate change led him to launch a nonprofit group, RepublicEn, devoted to bringing conservatives into the climate conversation. Today, Inglis tours the country, doing about 100 events a year at conservative groups such as College Republicans, Rotary Clubs, hunting and fishing clubs, and local GOP organizations.
The following interview has been edited for length and clarity.
You’ve talked about how, as a Republican congressman, you refused to accept climate change because the issue was associated with Al Gore, a Democrat. Do you think that what political scientists call “negative partisanship’’ is a major reason why conservatives still resist action on climate change?
Yes, it is. That’s why we need credible messengers who can speak the language of the tribe and who can make the tribe believe that conservative ideas can add something to this conversation. Conservatives have an undeserved inferiority complex on climate and energy. We understand the concepts of negative externalities and market distortion and accountability. Free enterprise — accountable free enterprise — can fix climate change.
You are referring to the libertarian concept of negative externalities, actions that negatively affect other people. Can you explain how it relates to carbon emissions?
When you burn fossil fuels, you’re basically dumping trash into the sky. You don’t pay a tipping fee for putting carbon waste into the atmosphere and contributing to climate change, so there is an implicit subsidy for burning these fuels and belching carbon — in fact, it’s the granddaddy of all energy subsidies.
Take that subsidy away and everything changes. Virtually all coal would be quickly replaced with natural gas and wind and solar and other methods. If you use a tax to set the real price of carbon, the free market will figure out cheaper and better ways to produce electricity. Things will start happening faster. You’ll see more development of hydrogen and better batteries that don’t use lithium to store the energy created by solar and wind. Climate change is an economic problem. Just fix the economics and innovation will happen. That’s the language of conservatism, and it’s how I talk to conservatives about it.
Why do you believe a carbon tax is the best way to bring Republicans aboard?
It is still the most obvious way to solve climate change, and the most efficient. This is an idea that goes back to Milton Friedman in the 1980s, when he said, instead of trying to regulate polluters, tax pollution. Make them pay for their negative externalities. You tax the trash they dump into the sky, just the way we impose a cost for dumping trash on land. It has to be a substantial tax, and it has to be steadily rising to increase incentives to find other forms of energy that don’t turn the sky into a dump for emissions. If you do that, you don’t need tax incentives for solar and wind — the rising cost of fossil fuels will provide all the incentives they need. But you also need to make this tax apply to other nations and the goods they import into the U.S.
How do you do that?
You can put a tax on the carbon produced in goods imported from China. Sen. Bill Cassidy [R-Louisiana] recently proposed a foreign pollution tax like the carbon border adjustment mechanism the European Union has already adopted. We very much welcome this idea because it’s a way of making the transition away from fossil fuels worldwide. Many Republicans say it’s not fair if the U.S. lowers emissions while China can do what it wants. The beauty of a foreign pollution fee is that it addresses this problem in an efficient way. It creates economic incentives for China to reduce its own emissions.
A carbon tax has been talked about for a long time but has gone nowhere in Congress. Do you see any evidence that it’s more politically palatable today?
I think a carbon tax is like the rescue of the banks after the financial crisis in 2008. Until the banks collapsed, bailing out the U.S. financial system seemed impossible. But when the consequences of not doing it became clear, the bailout went from impossible to inevitable without passing through probable.
Several catalyzing events could propel the carbon tax forward. The most likely is the momentum created by the European border adjustment mechanism, which is really a carbon tariff. Companies in the U.S. who deal with Europe are going to be calling their members of Congress and Senators and saying, wouldn’t you really rather collect that revenue for carbon emissions here at home through a carbon tax rather than sending the money to Europe? At some point, the light will go on at the U.S. Capitol — wow, the Europeans are getting a lot of revenue with a tariff on carbon, and we could do that, too. We could do that to China. We could say, the stuff you are selling here, you have to pay a carbon tariff.
Another momentum-maker is our federal debt. If interest rates stay high, interest will really start eating more and more of the federal budget. I have always said that a carbon tax should be revenue neutral, but given what’s happening to the deficit, it could also provide that revenue. Necessity may force Congress to turn to what used to seem impossible.
Could extreme weather provide another incentive?
Yes, there could be some catalyzing climate event that really focuses the mind. I don’t know what it will be. During the civil rights movement, when Americans saw segregated cities turn the police dogs and fire hoses on protestors, it really turned the tide on Jim Crow. We’ve had so much extreme weather that people are getting desensitized to it, but there still might be a catastrophic event that changes people’s priorities.
This year, we’ve already seen some of the most extreme weather and weather-related disasters in recent human history — massive wildfires that darkened skies across the country, relentless heat waves, fierce storms, and destructive flooding. Do you see evidence that this is registering with conservatives?
A lot of people won’t change their minds because of what a scientist says. But experience is different. Experience is a harsh teacher. You can’t argue with the thermometer. You can’t argue with the yardstick showing that sea is rising. You can’t argue with the water coming into your home. In 2010, when I was getting tossed out of Congress, there was a lot of aggressive disbelief in climate change. People told me, I don’t believe in climate change, and you shouldn’t, either.
Right now, it’s quite different. Conservatives say to me, sure, you can switch to clean energy here, but what difference does it make if you don’t get the rest of the world in on this? Why should we do this alone? That’s when I talk about negative externalities and a carbon tax, and imposing a carbon tariff on China and other countries. That changes their perspective.
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What do you say to The Wall Street Journal conservatives who concede that climate change is occurring but insist that it’s less disruptive and cheaper to invest in adaptation to a hotter, more extreme climate?
Adaptation is a defeatist argument. Good luck building a seawall in Miami-Dade, for example. As sea levels rise, the water there is coming up into streets through the porous bedrock under that area. In South Carolina, go to coastal areas and you’ll see the big stands of pine trees dying because of salt water intrusion. In Montana, the forests are now filled with dead and dying trees because bark beetles that used to die in the winter now survive and go on attacking the trees year-round.
Adaptation won’t work in many places where people are going to lose what they love. It won’t work in New England when maple trees no longer produce maple sap for syrup because the winters are too warm. It won’t work at ski resorts that no longer have snow. When you stop arguing and pay attention to what you’re losing, you start saying, wow, how do we fix this?
Polls show there is still a big partisan divide on climate change. Do you think that can change?
The problem is no longer a lack of information. People can see what is happening. The problem is a lack of validation, and it’s a lack of hope. We need validation from conservative leaders that climate change is obviously real, and that we obviously need to do something about it. And we need to show conservatives that the free enterprise system can provide solutions once we get the true cost of carbon right.
If you keep telling people about all the terrible things happening and that we’re all hosed, it’s depressing. It makes people say, I don’t want to work with you. But if you can come to conservatives and say, we can light the world with new energy sources, and we can have more energy and more freedom and more manufacturing and more jobs — we can have a better world if we act on this. We can have true energy independence, so we don’t need to depend on energy from authoritarian regimes who chop journalists up into pieces. I’d like to be free of those people. I’d like to able to say to the Saudis, we don’t need your oil. Why don’t you see if you can drink that stuff?
The current Republican presidential field is not validating that climate change needs to be addressed.
In the first debate Nikki Haley did say climate change is real, but immediately pivoted to talking about how China and India have to lower their emissions, too. That’s a step forward, but it’s not enough. In 2018, when Republicans lost the House, it dawned on then-Majority Leader Kevin McCarthy and some other Republicans that you can’t win suburban swing districts with a retro position on climate change. So McCarthy convened a special Republican conference on climate, and the takeaway was, we need to get with it.
Polling data shows a majority of young conservatives and young evangelicals want action on climate change, and if you want to win in 2024, 2028, and 2032, you need to have a plan that you can talk about. But then Trump decided to run again, and he’s doubling down on climate disputation, and everyone in the party is afraid of the Death Angel. Trump can’t get anyone elected, but if he comes after you, he can get you killed in a primary.
But even if Trump wins, he will be a lame duck by 2026, and then the party is going to ask, where do we go next? My prediction at that point is that Republicans will be tired of reruns of the Trump show and will want a fresh approach that can win over young voters and suburban voters. And if he loses in 2024, that’s when you’ll have the reevaluation.
You’ve said of climate change, “We’re all in this together.’’ That sounds progressive — maybe even vaguely socialistic. Does that message resonate with conservatives who are suspicious of collective action?
[Laughs.] Maybe I should examine that statement more closely. But as a person of faith, I think it is just obvious we are literally in this fight together.
I think you can summon all Americans to a higher cause. I think if we can assure conservatives, I’m not trying to cancel you, and you have ideas to contribute to this discussion about the power of economic incentives, free enterprise, and innovation. You have to make conservatives feel that they have something important to contribute.
You have to make them feel they have something to gain from the solutions. If you the United States makes a bold move on carbon taxes and tells China and other nations, you have to pay a carbon tariff on the stuff you export to us, then it becomes an international effort to curtail emissions. Then conservatives start saying, we’re really talking about realistic and fair solutions. That’s when you can say, we need to take action because we do not want to lose this amazingly beautiful planet. That’s when you can say to them, we’re really all in this together.
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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.
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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.
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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 …
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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.