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Ice melt is creating many geopolitical dangers, thanks largely to a familiar foe.

The Arctic is becoming dangerously destabilized.
This is true in a literal sense. The north’s precipitous loss in glacial ice sheets, permafrost, and sea ice will have global ripple effects. Should the “Earth’s air conditioner” become perennially iceless, as scientists fear could happen as early as 2050, the fallout has the power to trigger worst-case scenarios around the world: Sea levels could rise in New York City, monsoon rains could swamp Lagos, Nigeria, and precious forest cover in Puerto Maldonado, Peru, could dwindle to nubs. Each glacier that collapses is another tick of the time-bomb.
But it’s also true in a more metaphorical sense: Arctic ice melt is creating many geopolitical dangers, thanks largely to a familiar foe: Russia.
The Kremlin controls 50 percent of the Arctic coastline. But isolated from the other countries encircling the North Pole due to its war of aggression in Ukraine, Russia has retreated from any sort of Arctic cooperation. That has left experts fearful not only of scientists’ ability to stay on top of the impacts of climate change, but also that the warming region might give Russian President Vladimir Putin a pretext to break more international rules.
For the last 15 years, Russia has jockeyed for Arctic control — from aggressively building its military capabilities, to scaling up its shipping capacity, to even unlawfully planting a flag along the North Pole seabed and claiming the land as its own. But it was still hemmed in by the Arctic’s web of laws and accords.
These laws, unfortunately, are quite vulnerable to ice melt.
Maritime claims, upheld by entities like the International Maritime Organization, for example, are one way for states to protest rule-breaking in the region. But melting sea ice has opened up previously frozen zones, threatening to undermine laws like Article 234 of the United Nations Convention on the Law of the Sea, which gives coastal states special rights to ice covered areas. “If the ice melts, do you still have that legal basis?” said Rebecca Pincus, the director of the Polar Institute at the Wilson Center.
Valuable shipping lanes are also emerging in the north, encouraging Russia to further engage in a two-fold strategy: mass resource extraction to underpin its national wealth and taking “the most extreme position possible on its right to control all foreign navigation through the internal waters of the [Northern Sea Route],” as Cornell Overfield wrote recently in Foreign Policy. However, this state of affairs might not last long. “As sea ice continues to retreat in the Arctic, it will become possible for ships to navigate outside of the Russian zone through the central Arctic Ocean and bypass the Russian coastline entirely,” Pincus said. “That will shift the balance of the, I guess you could say, ‘power’ to a certain extent.”
These central Arctic Ocean shipping routes will not be open for decades and pose a number of operational challenges along the way, she explained. But when they do, it would allow ships to navigate outside Russian waters, reducing the potency of Russia’s de facto control along the Northern Sea Route, further isolating a country that sees the icy region as a part of its power projection.
Meanwhile, Russia is essentially alone among its neighbors.
Mathieu Boulègue, a consulting fellow in the Russia and Eurasia Programme at Chatham House, told me a bifurcation is emerging in the north, where a singled-out Russia has recused itself from the Nordic-North American camp — a once-staid Arctic 8 now made into an awkward, asterisked Arctic 7. With Finland having joined NATO this month, and Sweden close behind, Russia might see itself as not just alone, but surrounded. Experts fear that spells trouble.
“More human activity and more military activity will lead to more accidents, more incidents, more miscalculation, and therefore more tension,” said Boulègue. “Now that the signs are on the wall, we can't really ignore them anymore.”
The United States and other countries rimming the Arctic are carefully initiating exploratory military exercises in the region to see how they can navigate safely and effectively in newly-melted territories. Because of how remote the Arctic is, accidents and emergencies are exponentially harder and more expensive to triage. The latest U.S. Arctic strategy promises to increase its military presence there, too, in order to keep pace with the Russian military presence. But experts warn that neither technology nor policy in a territorially hostile area could keep up with the speed of these melting passages. Indeed, they say it would take the West at least 10 years to catch up with Russia’s military in the region. This opens up dangers for Russia to do just about anything it’d like to, including seizing new territory and setting up military bases in contested areas.
“We're seeing some pretty aggressive, unprofessional, and unsafe behavior by the Russian military in regards to American military assets [in the Arctic],” said the Wilson Center’s Pincus. “Think about that level of risk-taking and aggression on the part of the Russian military and now extrapolate that to, for example, a naval exercise that is contesting Russian claims to waters in the Arctic. That gives me pause and argues for great care.”
Beyond the threat of Russia’s mounting military capabilities in the region, Arctic cooperation has also suffered more generally from Russia’s absence. The Arctic Council is a Nobel Prize-nominated diplomatic forum that convenes the Arctic 8, six non-Arctic states, and a cadre of non-governmental observers which include Arctic Indigenous communities. This preeminent intergovernmental venue had to suspend all of its programming after the start of the war in Ukraine. It has only picked up projects since June of last year that do not require cooperation with Russia. Norway is set to assume the chair of this forum come May, but will have to tread delicately if it means to keep Russia within the Council’s orbit.
“The accession by Finland and Sweden to NATO will strengthen security and stability in Northern Europe, including in the Arctic. While security related aspects will understandably become more important, we must ensure that we do not lose sight of the broader issues in Arctic cooperation,” said Finnish Ambassadors Petteri Vuorimäki and Anne Mutanen in a statement to Heatmap.
These so-called broader issues not only impact high-level powers in the Arctic, but also those who are native to the region. Today, six Arctic Indigenous NGOs hold a non-voting status in the Arctic Council, making it one of the world’s only multilateral forums where national government officials sit at the same table as Native leaders.
Many of the six Arctic Indigenous communities who participate in the Arctic Council have ancestral lands that extend into Russia. Leaders among the Indigenous Saami people, for instance, fear that while Arctic states are busy ironing out tension spurred by Russia and its war, their priorities — from phasing out ecologically harmful heavy fuel oil, to prioritizing climate-resilient infrastructure, to recognizing land rights agreements which enable important climate science research, to triaging the potential displacement of Indigenous communities amid coastal erosion and sea ice melt — may take a back seat. “It's not said straight; it's a feeling underlying there that they have more important things to deal with,” said Gunn Britt-Retter, head of the Arctic Environment Unit of the Saami Council, which represents the Saami people spread across Norway, Sweden, Finland, and parts of Russia.
And then there’s another way Russian isolation is punishing the world: science. The world’s leading scientists desperately need access to this corner of the world to establish what they call a “ground truthing,” — basically an up-close understanding of what they’re only seeing now via satellites.
As Tim Lydon warned in The Atlantic last April, “cooperation with Russian scientists has ground to a halt.” Things haven’t improved over the past year. In February, French scientist Jérôme Chappellaz told the Arctic Institute that Russia’s absence from the international scientific community has led to an “environmental emergency.” Field sites have been cut off, data can’t be shared among climate experts based elsewhere, and scientific endeavors have been significantly scaled down.
Russian isolation is being felt everywhere in the Arctic. With global shipping, climate science, international cooperation, and adversarial militaries involved, the rest of the world might also feel the repercussions if something doesn’t change soon.
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One of the buzziest climate tech companies in our Insiders Survey is pushing past the “missing middle.”
One of the buzziest climate tech companies of the past year is proving that a mature, hitherto moribund technology — conventional geothermal — still has untapped potential. After a breakthrough year of major discoveries, Zanskar has raised a $115 million Series C round to propel what’s set to be an investment-heavy 2026, as the startup plans to break ground on multiple geothermal power plants in the Western U.S.
“With this funding, we have a six power plant execution plan ahead of us in the next three, four years,” Diego D’Sola, Zanskar’s head of finance, told me. This, he estimates, will generate over $100 million of revenue by the end of the decade, and “unlock a multi-gigawatt pipeline behind that.”
The size of the round puts a number to climate world’s enthusiasm for Zanskar. In Heatmap’s Insider’s Survey, experts identified Zanskar as one of the most promising climate tech startups in operation today.
Zanskar relies on its suite of artificial intelligence tools to locate previously overlooked conventional geothermal resources — that is, naturally occurring reservoirs of hot water and steam. Trained on a combination of exclusive subsurface datasets, modern satellite and remote sensing imagery, and fresh inputs from Zanksar’s own field team, the company’s AI models can pinpoint the most promising sites for exploration and even guide exactly what angle and direction to drill a well from.
Early last year, Zanskar announced that it had successfully revitalized an underperforming geothermal power plant in New Mexico by drilling a new pumped well nearby, which has since become the most productive well of this type in the U.S. That was followed by the identification of a large geothermal resource in northern Nevada, where exploratory wells had been drilled for decades but no development had ever occurred. Just last month, the company revealed a major discovery in western Nevada — a so-called “blind” geothermal system with no visible surface activity such as geysers or hot springs, and no history of exploratory drilling.
“This is a site nobody had ever had on the radar, no prior exploration,” Carl Hoiland, Zanskar’s CEO, told me of this latest discovery, dubbed “Big Blind.” He described it as a tipping point for the industry, which had investors saying, “Okay, this is starting to look more like a trend than just an anomaly.”
Spring Lane Capital led Zanskar’s latest round, which also included Obvious Ventures, Union Square Ventures, and Lowercarbon Capital, among others. Spring Lane aims to fill the oft-bemoaned “missing middle” of climate finance — the stage at which a startup has matured beyond early-stage venture backing but is still considered too risky for more traditional infrastructure investors.
Zanskar now finds itself squarely in that position, needing to finance not just the drills, turbines, and generators for its geothermal plants, but also the requisite permitting and grid interconnection costs. D’Sola told me that he expects the company to close its first project financing this quarter, explaining that its ambitious plans require “north of $600 million in total capital expenditures, the vast majority of which will come from non-dilutive sources or project level financing.”
Unsurprisingly, the company anticipates that data centers will be some of its first customers, with hyperscalers likely working through utilities to secure the clean energy attributes of Zanskar’s grid-connected power. And while the West Coast isn’t the primary locus of today’s data center buildout, Hoiland thinks Zanskar’s clean, firm, low-cost power will help draw the industry toward geothermally rich states such as Utah and Nevada, where it’s focused.
“We see a scenario where the western U.S. is going to have some of the cheapest carbon-free energy, maybe anywhere in the world, but certainly in the United States.” Hoiland told me.
Just how cheap are we talking? Using the levelized cost of energy — which averages the lifetime cost of building and operating a power plant per unit of electricity generated — Zanskar plans to deliver electricity under $45 per megawatt-hour by the end of this decade. For context, the Biden administration set that same cost target for next-generation geothermal systems such as those being pursued by startups like Fervo Energy and Eavor — but projected it wouldn’t be reached 2035.
At this price point, conventional geothermal would be cheaper than natural gas, too. The LCOE for a new combined-cycle natural gas plant in the U.S. typically ranges from $48 to $107 per megawatt-hour.
That opens up a world of possibilities, Hoiland said, with the startup’s’s most optimistic estimates showing that conventional geothermal could potentially supply all future increases in electricity demand. “But really what we’re trying to meet is that firm, carbon-free baseload requirement, which by some estimates needs to be 10% to 30% of the total mix,” Hoiland said. “We have high confidence the resource can meet all of that.”
On New Jersey’s rate freeze, ‘global water bankruptcy,’ and Japan’s nuclear restarts
Current conditions: A major winter storm stretching across a dozen states, from Texas to Delaware, and could hit by midweek • The edge of the Sahara Desert in North Africa is experiencing sandstorms kicked up by colder air heading southward • The Philippines is bracing for a tropical cyclone heading toward northern Luzon.
Mikie Sherrill wasted no time in fulfilling the key pledge that animated her campaign for governor of New Jersey. At her inauguration Tuesday, the Democrat signed a series of executive orders aimed at constraining electricity bills and expanding energy production in the state. One order authorized state utility regulators to freeze rate hikes. Another directed the New Jersey Board of Public Utilities “to open solicitations for new solar and storage power generation, to modernize gas and nuclear generation so we can lower utility costs over the long term.” Now, as Heatmap’s Matthew Zeitlin put it, “all that’s left is the follow-through,” which could prove “trickier than it sounds” due to “strict deadlines to claim tax credits for renewable energy development looming.”
Last month, the environmental news site Public Domain broke a big story: Karen Budd-Falen, the No. 3 official at the Department of the Interior, has extensive financial ties to the controversial Thacker Pass lithium mine in northern Nevada that the Trump administration is pushing to fast track. Now The New York Times is reporting that House Democrats are urging the Interior Department’s inspector general to open an investigation into the multimillion-dollar relationship Budd-Falen’s husband has with the mine’s developer. Frank Falen, her husband, sold water from a family ranch in northern Nevada to the subsidiary of Lithium Americas for $3.5 million in 2019, but the bulk of the money from the sale depended on permit approval for the project. Budd-Falen did not reveal the financial arrangement on any of her four financial disclosures submitted to the federal government when she worked for the Interior Department during President Donald Trump’s first term from 2018 to 2021.
House Republicans, meanwhile, are planning to vote this week to undo Biden-era restrictions on mining near more than a million acres of Minnesota wilderness. “Mining is huge in Minnesota. And all mining helps the school trust fund in Minnesota as well. So it benefits all schools in the state,” Representative Pete Stauber, a Minnesota Republican and the chair of the Natural Resources Subcommittee on Energy and Mineral Resources, said of the rule-killing bill he sponsored. While the vote is expected to draw blowback from environmentalists, E&E News noted that it could also agitate proceduralists who oppose the GOP’s continued “use of the rule-busting Congressional Review Act for actions that have not been traditionally seen as rules.” Still, the move is likely to fuel the dealmaking boom for critical minerals. As Heatmap’s Katie Brigham wrote in September, “everybody wants to invest” in startups promising to mine and refine the metals over which China has a near monopoly.
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A new United Nations report declares that the world has entered an era of “global water bankruptcy,” putting billions of people at risk. In an interview with The Guardian, Kaveh Madani, the report’s lead author, said that while not every basin and country is directly at risk, trade and migration are set to face calamity from water shortages. Upward of 75% of people live in countries classified as water insecure or critically water insecure, and 2 billion people live on land that is sinking as groundwater aquifers collapse. “This report tells an uncomfortable truth: Many critical water systems are already bankrupt,” Madani said. “It’s extremely urgent [because] no one knows exactly when the whole system would collapse.”

The Democratic Republic of the Congo has given the U.S. government a vetted list of mining and processing projects open to American investment. The shortlist, which Mining.com said was delivered to U.S. officials last week, includes manganese, gold, and cassiterite licenses; a copper-cobalt project and a germanium-processing venture; four gold permits; a lithium license; and mines producing cobalt, gold, and tungsten. The potential deals are an outgrowth of the peace agreement Trump brokered between the DRC and Rwanda-backed rebels, and could offer Washington a foothold in a mineral-rich country whose resources China has long dominated. But establishing an American presence in an unstable African country is a risky investment. As I reported for Heatmap back in October, the Denver-based Energy Fuels’ $2 billion mining project in Madagascar was suddenly thrown into chaos when the island nation’s protests resulted in a coup, though the company has said recently it’s still moving forward.
The Tokyo Electric Power Company is delaying the restart of the Kashiwazaki Kariwa nuclear power station in western Japan after an alarm malfunction. The alarm system for the control rods that keep the fission reaction in check failed to sound during a test operation on Tuesday, Tepco said. The world’s largest nuclear plant had been scheduled to restart one of its seven reactors on Tuesday. Fuel loading for the reactor, known as Unit 6, was completed in June. It’s unclear when the restart will now take place.
The delay marks a setback for Prime Minister Sanae Takaichi, who has made restarting the reactors idled after the 2011 Fukushima disaster and expanding the nuclear industry a top priority, as I told you in October. But as I wrote last month in an exclusive about Japan’s would-be national small modular reactor champion, the country has a number of potential avenues to regain its nuclear prowess beyond just reviving its existing fleet.
As a fourth-generation New Yorker, I’m qualified to say something controversial: I love, and often even prefer, Montreal-style bagels. They’re smaller, more efficient, and don’t deliver the same carbohydrate bomb to my gut. Now the best-known Montreal-style bagel place in the five boroughs has found a way to use the energy needed to make their hand-rolled, wood-fired bagels more efficiently, too. Black Seed Bagels’ catering kitchen in northern Brooklyn is now part of a battery pilot program run by David Energy, a New York-based retail energy provider. The startup supplied suitcase-sized batteries for free last August, allowing Black Seed to disconnect from ConEdison’s grid during hours when electricity rates are particularly high. “We’re in the game of nickels and dimes,” Noah Bernamoff, Black Seed’s co-owner, told Canary Media. “So we’re always happy to save the money.” Wise words.
Rob talks through Rhodium Groups’s latest emissions report with climate and energy director Ben King.
America’s estimated greenhouse gas emissions rose by 2.4% last year — which is a big deal since they had been steady or falling in 2023 and 2024. More ominously, U.S. emissions grew faster than our gross domestic product last year, suggesting that the economy got less efficient from a climate pollution perspective.
Is this Trump’s fault? The AI boom’s? Or was it a weird fluke? In this week’s Shift Key episode, Rob talks to Ben King, a climate and energy director at the Rhodium Group, about why U.S. emissions grew and what it says about the underlying structure of the American economy. They talk about the power grid, the natural gas system, and whether industry is going to overtake other emissions drivers as once thought.
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. Jesse is off this week.
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Here is an excerpt from our conversation:
Robinson Meyer: At the same time there’s been rising total electrification of the vehicle fleet, there’s also been rising hybrid and plug-in hybrid sales. Do we have a sense of how that breakdown is happening, in terms of reduced carbon intensity of the transportation sector and the light duty fleet?
Ben King: It’s a good question. We haven’t disaggregated the … When I say electric vehicles, I’m talking broadly about both full battery electric, and then plug-in hybrids. And then, I think we say this in paper, but I think there was pretty robust growth for gasoline hybrids as which, you know, relative to just a pure gas car, is better from an emissions perspective.
Meyer: Well, it’s funny because if you care about decarbonization and getting to net zero as soon as possible, you could have to poo poo hybrids. But if you’re actually involved in the game to just keep as much emissions out of the sky as possible, and you’re looking to net those 2% declines every year, hybrids are pretty important because they are basically a drop-in replacement to gasoline car use that burns less gasoline.
King: The other interesting thing that gasoline hybrids does for the sector is it finds interesting unanticipated uses for all this battery manufacturing capacity that we’ve built in the U.S., or that we stand to build. Our forecast for pure EVs — so battery electrics, plug-in hybrids — looks a little worse in the out years because of the tax credits going away, because of the EPA tailpipe regulations going away at the same time that the anticipated demand pull from those policies, plus the advanced manufacturing tax credit — the 45X tax credit — has really been wildly successful in standing up a battery manufacturing industry here in the U.S.
If you want that capacity to be around, one thing that you could do with those batteries is put them into hybrids, right? You might have to retool the line a little bit to accommodate different sizes and stuff, build the expertise, build the workforce, etc., such that when the floodgates open again for electric vehicle adoption, for instance, we’ve got substantial battery manufacturing capacity here domestically.
Mentioned:
Rhodium Group: Preliminary US Greenhouse Gas Emissions Estimates for 2025
Rob on Rhodium’s 2023 emissions report
And here’s Rhodium’s 2024 emissions report
This episode of Shift Key is sponsored by …
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Music for Shift Key is by Adam Kromelow.