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:
From the Inflation Reduction Act to our summer inferno to an anti-car paradise and everything in between.

I may be the new kid on the block (ICYMI I joined in November as Heatmap’s deputy editor), but if anything, I think that makes me even more qualified to talk about the most popular stories from our nine-ish months in existence — after all, for most of that time I was reading them, not working on them.
The list spans stories from the day we launched in March all the way to our coverage of COP28, which concluded just a few weeks ago. There are stories on the quest to build out renewable energy infrastructure, how to use the Inflation Reduction Act to save on your home renovation projects, and living through our summer of heat, but also stories on surfing and subways and Tokyo.
As happens with any such list, a vivid picture of you — our much-valued readers — emerges from between the lines. Climate change isn’t just the biggest story of our time, it’s also the biggest story of our lives. The curiosity you have is personal — not just about how governments are trying to solve this crisis, but also about how you can play a role; not just about electrons and molecules, but also about places and people.
If we didn’t love you already, we certainly would after seeing this list. Thanks so much for reading. We’ll see you in 2024.
The IRA consists of dozens of subsidies to help individuals, households, and businesses adopt clean energy technologies. Many of these solutions will also help people save money on their energy bills, reduce pollution, and improve their resilience to disasters.
But understanding how much funding is available for what, and how to get it, can be pretty confusing. Many Americans are not even aware that these programs exist. If you haven’t heard much about how the IRA can help you decarbonize your life, this guide is for you. If you have heard about the available subsidies, but aren’t sure how much they are worth or where to begin, Emily will walk you through it. (And if you’re looking for information about the electric vehicle tax credit, my colleague at Heatmap Robinson Meyer has you covered with this buyer’s guide.)
The ill tidings started early on a Friday morning with SolarEdge, a company that primarily sells inverters, which convert the electricity produced by a solar panel into the kind that can be used in homes.
In an unexpected announcement, SolarEdge’s chief executive Zvi Lando said that, in the third quarter, the company had “experienced substantial unexpected cancellations and pushouts of existing backlog from our European distributors.” Many of its core financial metrics, including revenue and operating income, would fall below the low end of the range it had projected earlier, SolarEdge warned. The company also said it expected “significantly lower revenues in the fourth quarter.” (SolarEdge is based in Israel but the company said that the Hamas-Israel war was not related to their financial troubles.)
Investors promptly panicked, selling off the stock and sending it down 27% in trading by the afternoon. The worry is that the problems SolarEdge identified are not unique to the company itself or even the inverter business, but to the solar industry as a whole.
What keeps emergency management officials up at night? Terrorist attacks. The Big One. A direct hit from a Category 5 hurricane.
But when it comes to climate-related disasters, one fear often rises above the rest: a blackout during a heat wave. According to new research published this spring, a two-day citywide blackout in Phoenix during a heat wave could lead to half the population — some 789,600 people — requiring emergency medical attention in a metropolitan area with just 3,000 available beds. As many as 12,800 people could die, the equivalent of more than nine Hurricane Katrinas.
So if the power goes out during a heat wave, what do you do?
The region’s major utilities — Arizona Public Service, Tucson Electric Company, and the Salt River Project — have all said they’re confident that the lights, and especially the air conditioning, will stay on, even as both temperatures and electricity usage break records. This is in stark contrast to a nearby state, Texas, where record heat has sparked anxiety about reliability and voluntary calls for conserving energy use.
Whether Arizona can transition to a less carbon-intensive grid while maintaining its famed reliability is a test not just for its residents, but also for Arizona’s stubborn rejection of energy deregulation.
In the last few years, climate change has made its impact known in violent, eye-grabbing ways. Heat waves and drought slowly roll across the planet; hurricanes and floods and wildfires bring sudden devastation to communities that were once safe. But there are also slower, more insidious impacts that we can easily forget about in the wake of those disasters, including the most classic impact of them all: sea-level rise.
The East Coast is particularly vulnerable to rising seas, and in her new book Charleston: Race, Water, and the Coming Storm (Pegasus Books, April 4, 2023), Susan Crawford, a writer and professor at Harvard Law School, explores how the historic city, the largest in South Carolina, is preparing — or failing to prepare — for what’s to come. Flooding has become increasingly commonplace in Charleston, Crawford writes, and the city’s racial history has meant that low-income communities of color are bearing the worst of the impact, with little hope for relief.
“It’s Confederate Disneyland,” Crawford told Neel in an interview about the book, “and it’s about to be SeaWorld.”
On Methane Day at COP28 in Dubai, and there was a slew of new commitments to wrangle the highly potent, short-lived greenhouse gas. This is not the first time many of these groups have pledged to address methane, which leaks into the atmosphere from oil and gas infrastructure, coal mines, landfills, and farms. But taken together, today’s actions bring more ambition, transparency, and accountability to the task.
During a press briefing on Friday morning, U.S. Climate Envoy John Kerry told reporters that reducing methane emissions is the “easiest, quickest, cheapest, simplest” way to fight climate change. But for an issue that’s so easy to address, the scourge on methane has sucked up a lot of oxygen in the climate conversation over the past five years.
Neel has spent a lot of time thinking about how to cover heat waves. Each is unique — suffering of any kind is always unique, even if the broad strokes are not — yet the things one can say about them are, for the most part, largely the same. Records will break, power grids will strain, and people will be hurt: This is the reality of climate change.
So this year, we tried an experiment: We documented particularly notable heat waves around the world as they happened, but rather than devote separate stories to them, each heat wave got a short entry within this larger page. We called out especially vivid details or statistics and include links to local outlets that can provide more information to anyone looking for it. The goal here was to create a record of the very real impact of climate change today.
For cities that want to reduce the number of cars, bike lanes are a good place to start. They are cheap, usually city-level authorities can introduce them, and they do not require you to raise taxes on people who own cars. What if you want to do something more radical though? What would a city that genuinely wanted to get the car out of its citizens’ lives in a much bigger way do? A city that wanted to make it possible for most people to live decent lives and be able to get around without needing a car, even without needing to get on a bicycle?
There is only one city on Earth Daniel has ever visited that has truly managed this. But it happens to be the biggest city on the planet: Tokyo, the capital of Japan.
Dr. Cliff Kapono sometimes still surfs the way his Indigenous Hawaiian ancestors did 1,000 years ago, on a traditional wooden board and all. But the professional surfer and molecular biologist fears his descendants might not have the same privilege. The reason is the looming scarcity of surfable waves.
While climate change could be a boon for big-wave surfers, as some have highlighted, the beloved recreational side of the sport is endangered by the shifting climate. Dramatic changes are already locked in, with rising waters swallowing surf breaks and wary communities erecting sea walls that alter the shape of the coastline. But this tension — between the masses losing access to cherished resources and the few who benefit even as they lament — is not exclusive to surfers; it’s one that bedevils almost anything related to climate adaptation.
As a metropolis that runs on the fumes of pure defiance and chaos magic even during the best of times, New York was understandably struggling to stay afloat after a month’s worth of rain fell within a few hours one Friday morning in Septemnber. Subway staircases transformed into white-water obstacles more befitting of Action Park than America’s most populous city, while trash cans embarked from their curbside moorings, destined for unknown shores. Cars — half-submerged and looking curiously hippopotamine — nosed their way through the city’s new waterways. The Central Park sea lion exhibit overflowed with, well, sea lions. A manhole outside Joe’s Pizza in the East Village caught fire, the result of short-circuiting electrical cables. In Brooklyn, inexplicably, a whirlpool appeared.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
With construction deadlines approaching, developers still aren’t sure how to comply with the new rules.
Certainty, certainty, certainty — three things that are of paramount importance for anyone making an investment decision. There’s little of it to be found in the renewable energy business these days.
The main vectors of uncertainty are obvious enough — whipsawing trade policy, protean administrative hostility toward wind, a long-awaited summit with China that appears to have done nothing to resolve the war with Iran. But there’s still one big “known unknown” — rules governing how companies are allowed to interact with “prohibited foreign entities,” which remain unwritten nearly a year after the One Big Beautiful Bill Act slapped them on just about every remaining clean energy tax credit.
The list of countries that qualify as “foreign entities of concern” is short, including Russian, Iran, North Korea, and China. Post-OBBBA, a firm may be treated as a “foreign-influenced entity” if at least 15% of its debt is issued by one of these countries — though in reality, China is the only one that matters. This rule also kicks in when there’s foreign entity authority to appoint executive officers, 25% or greater ownership by a single entity or a combined ownership of at least 40%.
Any company that wants to claim a clean energy tax credit must comply with the FEOC rules. How to calculate those percentages, however, the Trump administration has so far failed to say. This is tricky because clean energy projects seeking tax credits must be placed in service by the end of 2027 or start construction by July 4 of this year, which doesn’t leave them much time left to align themselves with the new rules.
While the Treasury Department published preliminary guidance in February, it largely covered “material assistance,” the system for determining how much of the cost of the project comes from inputs that are linked to those four nations (again, this is really about China). That still leaves the issue of foreign influence and “effective control,” i.e. who is allowed to own or invest in a project and what that means.
This has meant a lot of work for tax lawyers, Heather Cooper, a partner at McDermott Will & Schulte, told me on Friday.
“The FEOC ownership rules are an all or nothing proposition,” she said. “You have to satisfy these rules. It’s not optional. It’s not a matter of you lose some of the credits, but you keep others. There’s no remedy or anything. This is all or nothing.”
That uncertainty has had a chilling effect on the market. In February, Bloomberg reported that Morgan Stanley and JPMorgan had frozen some of their renewables financing work because of uncertainty around these rules, though Cooper told me the market has since thawed somewhat.
“More parties are getting comfortable enough that there are reasonable interpretations of these rules that they can move forward,” she said. “The reality is that, for folks in this industry — not just developers, but investors, tax insurers, and others — their business mandate is they need to be doing these projects.”
Some of the most frequent complaints from advisors and trade groups come around just how deep into a project’s investors you have to look to find undue foreign ownership or investment.
This gets complicated when it comes to the structures involved with clean energy projects that claim tax credits. They often combine developers (who have their own investors), outside investment funds, banks, and large companies that buy the tax credits on the transferability market.
These companies — especially the banks, which fund themselves with debt — “don’t know on any particular date how much of their debt is held by Chinese connected lenders, and therefore they’re not sure how the rules apply, and that’s caused a couple of banks to pull out of the tax equity market,” David Burton, a partner at Norton Rose Fulbright, told me. “It seems pretty crazy that a large international bank that has its debt trading is going to be a specified foreign entity because on some date, a Chinese party decided to take a large position in its debt.”
For those still participating in the market, the lack of guidance on debt and equity provisions has meant that lawyers are having to ascend the ladder of entities involved in a project, from private equity firms who aren’t typically used to disclosing their limited partners to developers, banks, and public companies that buy the tax credits.
“We’re having to go to private equity funds and say, hey, how many of your LPs are Chinese?” David Burton, a partner at Norton Rose Fulbright, told me. This is not information these funds are typically particularly eager to share. If a lawyer “had asked a private equity firm please tell us about your LPs, before One Big Beautiful Bill, they probably would have told us to go jump in the lake,” Burton said.
Still, the deals are still happening, but “the legal fees are more expensive. The underwriting and due diligence time is longer, there are more headaches,” he told me.
Typically these deals involve joint ventures that formed for that specific deal, which can then transfer the tax credits to another entity with more tax liability to offset. The joint venture might be majority owned by a public company, with a large minority position held by a private equity fund, Burton said.
For the public company, Burton said, his team has to ask “Are any of your shareholders large enough that they have to be disclosed to the SEC? Are any of those Chinese?” For the private equity fund, they have to ask where its investors are residents and what countries they’re citizens of. While private equity funds can be “relatively cooperative,” the process is still a “headache.”
“It took time to figure out how to write these certifications and get me comfortable with the certification, my client comfortable with it, the private equity firm comfortable with it, the tax credit buyer comfortable with it,” he told me, referring to the written legal explanation for how companies involved are complying with what their lawyers think the tax rules are.
Players such as the American Council on Renewable Energy hope that guidance will cut down on this certification time by limiting the universe of entities that will have to scrub their rolls of Chinese investors or corporate officers.
“It’d be nice if we knew you only have to apply the test at the entity that’s considered the tax owner of the project,” i.e. just the joint venture that’s formed for a specific project, Cooper told me.
“There’s a pretty reasonable and plain reading of the statute that limits the term ’taxpayer’ to the entity that owns the project when it’s placed in service,” Cooper said.
Many in the industry expect more guidance on the rules by the end of year, though as Burton noted, “this Treasury is hard to predict.”
In the meantime, expect even more work for tax lawyers.
“We’re used to December being super busy,” Burton said. “But it now feels like every month since the One Big Beautiful Bill passed is like December, so we’ve had, like, you know, eight Decembers in a row.”
Deep cuts to the department have left each staffer with a huge amount of money to manage.
The Department of Energy has an enviable problem: It has more money than it can spend.
DOE disbursed just 2% of its total budgetary resources in fiscal year 2025, according to a report released earlier this year from the EFI Foundation, a nonprofit that tracks innovations in energy. That figure is far lower than the 38% of funds it distributed the year prior.
While some of that is due to political whiplash in Washington, there is another, far more mundane cause: There simply aren’t that many people left to oversee the money. Thanks to the Department of Government Efficiency’s efforts, one in five DOE staff members left the agency. On top of that, Energy Secretary Chris Wright shuffled around and combined offices in a Kafkaesque restructuring. Short on workers and clear direction, the department appears unable to churn through its sizable budget.

Though Congress provides budgetary authority, agencies are left to allot spending for the programs under their ambit, and then obligate payments through contracts, grants, and loans. While departments are expected to use the money they’re allocated, federal staff have to work through the gritty details of each individual transaction.
As a result of its reduced headcount, DOE’s employees are each responsible for far more budgetary resources than ever before.
“DOE is facing its largest imbalance in its history,” Alex Kizer, executive vice president of EFI Foundation, told me. In fiscal year 2017, DOE budgeted around $4.7 million per full-time employee. In the fiscal year 2026 budget request, that figure reached $35.7 million per worker — about eight times more.
Part of that increase is the result of the unprecedented injection of funding into DOE from the 2021 Infrastructure Investment and Jobs Act and the 2022 Inflation Reduction Act. The pair of laws, which gave DOE access to $97 billion, comprised the United States’ largest investment to combat climate change in the nation’s history.
The epoch of federally backed renewable energy investment proved to be short-lived, however. Once President Trump retook office last year, his administration froze funds and initiated a purge of federal workers that resulted in 3,000 staffers (about one in five) leaving DOE through the Deferred Resignation Program. The administration canceled hundreds of projects, evaporating $23 billion in federal support.
While the One Big Beautiful Bill Act passed last summer depleted some of the IRA’s coffers and sunsetted many tax credits years early, it only rescinded about $1.8 billion from DOE, according to the EFI Foundation. Much of the IRA’s spending had already gone out the door or was left intact.
This leaves DOE in a strange position: Its budget is historically high, but its staffing levels have suffered an unprecedented drop.

Even before the short-lived Elon Musk-run agency took a chainsaw to the federal workforce, DOE struggled to hire enough people to keep up with the pace of funding demanded by the IRA’s funding deadlines. The Loan Programs Office, for example, was criticized for moving too slowly in shelling out its hundreds of billions in loan authority. According to a report from three ex-DOE staffers that Heatmap’s Emily Pontecorvo covered, the IRA’s implementation suffered from a lack of “highly skilled, highly talented staff” to carry out its many programs.
“The last year’s uncertainty and the staff cuts, the project cancellations, those increase an already tightening bottleneck of difficulty with implementation at the department,” Sarah Frances Smith, EFI Foundation’s deputy director, told me.
One former longtime Department of Energy staffer who asked not to be named because they may want to return one day told me that as soon as Trump’s second term started, funding disbursement slowed to a halt. Employees had to get permission from leadership just to pay invoices for projects that had already been granted funding, the ex-DOE worker said.
While the Trump administration quickly moved to hamstring renewable energy resources, staff were kept busy complying with executive orders such as removing any mention of diversity equity and inclusion from government websites and responding to automated “What did you do last week?” emails.
On top of government funding drying up, Kizer told me that the confusion surrounding DOE has had a “cooling effect on the private sector’s appetite to do business with DOE,” though the size of that effect is “hard to quantify.”
Under President Biden, DOE put a lot of effort into building trust with companies doing work critical to its renewable energy priorities. Now, states and companies alike are suing DOE to restore revoked funds. In a recent report, the Government Accountability Office warned, “Private companies, which are often funding more than 50 percent of these projects, may reconsider future partnerships with the federal government.”
Clean energy firms aren’t the only ones upset by DOE’s about-face. Even the Republican-controlled Congress balked at President Trump’s proposed deep cuts to DOE’s budget in its latest round of budget negotiations. Appropriations for fiscal year 2026 will be just slightly lower than the year before — though without additional headcount to manage it, the same difficulties getting money out the door will remain.
The widespread staff exit also appears to have slowed work supporting the administration’s new priorities, namely coal and critical minerals. LPO, which was rebranded the “Office of Energy Dominance Financing,” has announced only a few new loans since President Biden left office. Southern Company, which received the Office’s largest-ever loan, was previously backed by a loan to its subsidiary Georgia Power under the first Trump administration.
Despite Trump’s frequent invocation of the importance of coal, DOE hasn’t accomplished much for the technology besides some funding to keep open a handful of struggling coal plants and a loan to restart a coal gasification plant for fertilizer production that was already in LPO’s pipeline under Biden.
Even if DOE wanted to become an oil and gas-enabling juggernaut, it may not have the labor force it needs to carry out a carbon-heavy energy mandate.
“When you cut as many people as they did, you have to figure out who’s going to do the stuff that those people were doing,” said the ex-DOE staffer. “And now they’re going to move and going, Oh crap, we fired that guy.”
Will moving fast and breaking air permits exacerbate tensions with locals?
The Trump administration is trying to ease data centers’ power permitting burden. It’s likely to speed things up. Whether it’ll kick up more dust for the industry is literally up in the air.
On Tuesday, the EPA proposed a rule change that would let developers of all stripes start certain kinds of construction before getting a historically necessary permit under the Clean Air Act. Right now this document known as a New Source Review has long been required before you can start building anything that will release significant levels of air pollutants – from factories to natural gas plants. If EPA finalizes this rule, it will mean companies can do lots of work before the actual emitting object (say, a gas turbine) is installed, down to pouring concrete for cement pads.
The EPA’s rule change itself doesn’t mention AI data centers. However, the impetus was apparent in press materials as the agency cited President Trump’s executive order to cut red tape around the sector. Industry attorneys and environmental litigants alike told me this change will do just that, cutting months to years from project construction timelines, and put pressure on state regulators to issue air permits by allowing serious construction to start that officials are usually reluctant to disrupt.
“I think the intended result is also what will happen. Developers will be able to move more quickly, without additional delay,” said Jeff Holmstead, a D.C.-based attorney with Bracewell who served as EPA assistant administrator for air and radiation under George H.W. Bush. “It will almost certainly save some time for permitting and construction of new infrastructure.”
Air permitting is often a snag that will hold up a major construction project. Doubly so for gas-powered generation. Before this proposal, the EPA historically was wary to let companies invest in what any layperson would consider actual construction work. The race for more AI infrastructure has changed the game, supercharging what was already an active debate over energy needs and our nation’s decades-old environmental laws.
Many environmental groups condemned the proposal upon its release, stating it would make gas-powered AI data centers more popular and diminish risks currently in place for using dirtier forms of electricity. Normally, they argue, this permitting process would give state and federal officials an early opportunity to gauge whether pollution control measures make sense and if a developer’s preferred design would unduly harm the surrounding community. This could include encouraging developers to consider alternate energy sources.
“Inevitably agencies have flexibility as to how much they ask, and what this allows them to do is pre-commit in ways that’ll force agencies to take stuff off the table. What’s taken off the table, it’s hard to know, but you’re constraining options to respond to public concerns or recognize air quality impacts,” said Sanjay Narayan, Sierra Club’s chief appellate counsel.
Herein lies the dilemma: will regulatory speed for power sacrifice opportunities for input that could quell local concerns?
We’re seeing this dilemma play out in real time with Project Matador, a large data center proposal being developed in Amarillo, Texas, by the Rick Perry-backed startup Fermi Americas. Project Matador is purportedly going to be massive and Fermi claims its supposed to one day reach 11 GW, which would make it one of the biggest data centers in the world.
Fermi’s plans have focused on relying on nuclear power in the future. But the only place they’ve made real progress so far in getting permits is gas generation. In February, the Texas Commission on Environmental Quality gave Fermi its air permit for building and operating up to 6 gigawatts of gas power at Project Matador. At that time, Fermi was also rooting for relaxed New Source Review standards, applauding EPA in comments to media for signaling it would take this step. The company’s former CEO Toby Neugebauer also told investors on their first earnings call that Trump officials personally intervened to help get them gas turbines from overseas. (There’s scant public evidence to date of this claim and Neugebauer was fired by Fermi’s board last month.)
But now Fermi’s permit is also being threatened in court. In April, a citizens group Panhandle Taxpayers for Transparency filed a lawsuit against TCEQ challenging the validity of the permit. The case centers around whether the commission was right to deny a request for a contested case hearing brought by members of the group who lived and worked close to Project Matador. “Once these decisions are made, they don’t get reversed,” Michael Ford, Panhandle Taxpayers for Transparency’s founder, said in a fundraising video.
This is also a financial David vs. Goliath, as Ford admits in the fundraising video they have less than $2,000 to spend on the case – a paltry sum they admit barely covers legal bills. We’re also talking about a state that culturally and legally sides often with developers and fossil fuel firms.
At the same time, this lawsuit couldn’t come at a more difficult time as Fermi is struggling with other larger problems (see: Neugebauer’s ouster). Eric Allman, one of the attorneys representing Panhandle Taxpayers for Transparency, told me they’re still waiting on a judge assignment and estimated it’ll take about one year to get a ruling. Allman told me legally Fermi can continue construction during the legal challenge but there are real risks. “Applicants on many occasions will pause activity while there is an appeal pending,” he told me, “because if the suit is successful, they won’t have an authorization.”
Aerial photos reported by independent journalist Michael Thomas purportedly show Fermi hasn’t done significant construction since obtaining its air permit. Fermi did not respond to multiple requests for comment on the lawsuit.
Industry attorneys I spoke to who wished to remain anonymous told me it was too early to say whether EPA’s rulemaking would exacerbate local conflicts by making things move faster. “A lot of times the environmental community likes to litigate things in the hope delays will kill a project, so in that regard, this strategy may be harder for them to implement now,” one lawyer told me. “But just because a plant gets a permit doesn’t mean they can build.”
Environmental lawyers, meanwhile, clearly see more potential for social friction in a faster process. Keri Powell of the Southern Environmental Law Center compared this EPA action to xAI’s rapid buildout in Tennessee and Mississippi where the Al company’s construction of gas turbines before it received its permits has only added to local controversy. This new rule would not make what xAI did permissible; this is a different matter. Yet there are thematic similarities between what the company is doing and the new permitting regime, with natural gas generation expanding faster when companies are allowed to start forms of site work before an air permit is issued.
“By the time a permit is issued, the company will be very, very far along in constructing a facility. All they’ll need to do is bring in the emitting unit, and oftentimes that doesn’t entail very much,” she said. “Imagine you’re a state or local permitting agency – your ability to choose something different than what the company already decided to do is going to be limited.”