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Extreme heat is the deadliest weather phenomenon in the United States. It's also one of the easiest to underestimate: We feel it on our skin, or perhaps see it shimmering in the air around us, but it doesn't announce itself with the destructive aplomb of a hurricane or wildfire. Still, heat waves are becoming practically synonymous with summer.
Climate change is only making heat waves worse. They're getting more frequent, up from an average of two per year in the United States in the 1960s to six per year in the 2010s and '20s. They're also about a day longer than they were in the ‘60s, and they're more intense; those two factors combined, in particular, make them more deadly. This year's expected El Niño will bring even more heat with it: NOAA's summer outlook for the United States, shown below, paints a swath of above-average temperatures across much of the country.
NOAA's seasonal temperature outlook for the summer of 2023.National Oceanic and Atmospheric Administration
I’ve 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 are trying an experiment: We will document particularly notable heat waves around the world as they happen, but rather than devote separate stories to them, each heat wave will get a short entry within this larger page. We will call 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 is to create a record of the very real impact of climate change today. By the end of the summer, this page will likely be filled with entry after entry showcasing the ways heat affected people around the world over the course of a few months. This is, I am aware, potentially fertile ground for climate anxiety, but our hope is that the project can help us recognize how our lives are changing and allow us to refocus on what we can do to adapt to our new reality.
Each entry has its own URL. If you wish to share details of any particular heat wave, simply scroll to that entry and hit the share button on your phone or copy the link in your browser. If you'd like to share this tracker as a whole, scroll back up to this introduction. This timeline will be in reverse chronological order, or in other words the newest events will appear at the top of the page.
This project is publishing in the midst of a heat wave hitting multiple Asian countries, and we’ve also included a couple of heat waves that have already come and gone; as the summer progresses, you'll see updates from the entire Heatmap staff and the gradual shaping of a larger story of heat. Again, this is an experiment, and we'd love to hear what you think about it — if you have strong thoughts one way or another, please send them to neel [at] heatmap [dot] news. —Neel Dhanesha
September 6: As we near the end of the summer — though ambient temperatures this week may suggest otherwise — the World Meteorological Organization (WMO) has announced that Earth just had its hottest three-month period on record, and the year so far is the second-warmest after 2016, which saw an extreme El Niño.
“Climate breakdown has begun,” said UN Secretary-General António Guterres in a statement. “Leaders must turn up the heat now for climate solutions. We can still avoid the worst of climate chaos — and we don’t have a moment to lose.”
According to the Copernicus Climate Change Service, August is estimated to have been around 1.5°C warmer than the preindustrial average. Last month saw the highest global average sea surface temperatures on record, at 20.98°C, and Antarctic sea ice was at a record low for that point in the year. Those sea surface temperatures will have a significant impact on hurricane season; as we saw with Idalia, extremely high ocean temperatures can supercharge tropical storms.
These numbers are no surprise — scientists have, of course, been warning of these catastrophic impacts for years — and this report is just the latest in a long line of UN reports that catalog the ways our planet is changing. The question, as always, is if this report will spur any more action than the previous ones did, or whether it will amount to yet another howl lost in the wind. —Neel Dhanesha
August 23-28: On Thursday, record-breaking heat tied the hottest temperature ever recorded in Houston at 109 degrees. In Dallas on Friday, highs climbed into the high 100s. And in Austin on Sunday, the temperature climbed up to 109 degrees. From Thursday to Sunday, the Electricity Reliability Council of Texas issued a conservation request every day — asking Texans to lower their energy use as air conditioners blasted.
Texans will get a relative reprieve from the heat over the coming days: Dallas won’t cross back over the triple-digit mark until Saturday, while Houston won’t get hotter than 100 degrees this week. Still, temperatures remain high — a reminder that just because summer break is over in many places, summer weather isn’t, making air conditioning in schools and on buses more critical than ever. —Will Kubzansky
August 22: The Midwest joins the South and Southwest this week in pulling the short straw of weather forecasts. The National Weather Service projects a large heat dome will “persist in at least 22 states until the end of the week,” Axios reports, affecting 143 million Americans. Numerous cities are experiencing heat indexes between 110 and 115 degrees Fahrenheit; Lawrence, Kansas, even reached a “feels-like” temperature of 134 on Sunday.
Not only will the extreme highs endanger lives, the heat waves might threaten “a bumper U.S. harvest that’s key to keeping global inflation in check,” Bloomberg reports. The United States expects to reap its second largest corn harvest on record this year, but the upcoming heat might dry out fields that are already showing signs of being parched.
Over the weekend, relief for the Midwest will come from cooler winds flowing down from Canada, AccuWeather reports. Unfortunately, the welcome breeze might also come along with “bouts of poor air quality” and smoke from Canadian wildfires. —Annie Xia
August 16: With triple-digit highs, the Pacific Northwest has joined the ranks of states breaking heat records this summer. Portland, Oregon, hit 108 degrees Fahrenheit on Monday, a record for the month of August. Seattle, Washington, also set a new daily record on Monday when it reached 96 degrees.
Combined with strong winds and moderate to severe drought levels, high temperatures in the region also mean heightened wildfire risk. Almost 3,000 firefighters are already “battling the seven large fires burning across Oregon and Washington,” CNN reports.
The sweltering temperatures continue a streak of oppressive summers in the Pacific Northwest. Dr. Steven Mitchell, medical director of a Seattle hospital’s emergency department, told The New York Times that “he couldn’t remember treating a single case of severe heat illness or heat stroke” before 2021, when a deadly heat wave struck the region. —Annie Xia
August 9-11: Florida is often synonymous with heat, but the heat index in Tampa Bay climbed up to 112 degrees on Wednesday — flirting with 113, the mark at which an excessive heat warning is issued. The Tampa Bay Times reported that the warning issued Wednesday was possibly the area’s first excessive heat warning ever, with the caveat that records might be faulty.
While the heat has let up slightly, a heat advisory remains in effect from Fort Myers up to Chiefland, and the area has exceeded its electricity demand records twice this week. On Friday, the heat index at Tampa International Airport reached 110 degrees, and values are expected to climb up to 108 on Saturday, according to the National Weather Service. —Will Kubzansky
August 7: In places like New Orleans, the old adage applies: It’s not just the heat, it’s the humidity. The high is set to hover between 100 and 97 through Friday, but the heat index will sit between 116 and 111. Louisiana, like much of the country, is seeing an unusually hot summer: Baton Rouge experienced its warmest month on record in July. All the while, central Mississippi is experiencing highs between the high 90s and low 100s, with heat indices reaching 120 degrees, according to the National Weather Service’s outpost in Jackson.
The heat killed 16 Louisianans in June and July. And given that extreme heat causes the worst impacts for people experiencing poverty and creates particularly devastating effects for Black Americans, it’s worth noting that Mississippi and Louisiana have the two highest poverty rates in the country as well as the highest proportion of Black residents of any two states. —Will Kubzansky
August 2: Iran is shutting down. The New York Times reports that government agencies, banks, schools, soccer leagues are all closed Wednesday and Thursday, allegedly due to the heat, which is expected to reach 104 degrees Fahrenheit in Tehran. In Ahvaz, a southwestern city, the high on Wednesday is a blistering 123 degrees.
Per the Times, some Iranians have expressed doubts about the alleged reason for the shutdown — instead claiming that the country’s electric grid can’t meet demand. All the while, Iran faces extensive water shortages across the country, largely due to mismanagement of its resources. —Will Kubzansky
August 2: A deadly heat wave is striking both sides of the Sea of Japan.
In South Korea, two deaths were reported on Tuesday due to high heat — they were senior citizens working outside — bringing the death toll from the heat wave to 12. With temperatures above 100 degrees Fahrenheit in Yeoju, a city south of Seoul, the country has raised its warning system for heat to the highest level, the first instance since 2019.
And in Japan, a 13-year-old girl and an elderly couple died due to heat-related causes on Friday. Temperatures have climbed above 103 degrees this week in parts of the country, and 32 prefectures are under the government’s “special heatstroke alert,” according to The Washington Post.
Japan is coming off a brutal month of July, which included the longest run of 95 degree temperatures in Tokyo since records began in 1875. Heat waves are especially devastating for Japan, which has one of the world’s oldest populations. —Will Kubzansky
July 28: No American city has been more emblematic of this summer’s relentless heat than Phoenix, where the temperature has climbed above 110 degrees Fahrenheit for 29 consecutive days. That streak looks like it might finally come to a close, with highs ranging from 106 to 109 from Monday to Wednesday next week as the forecast calls for rain over the weekend. But by Thursday, the mercury will climb above 110 yet again.
With the heat showing no signs of truly relenting, Arizona Democrats have proposed a novel solution — calling on President Joe Biden to issue a presidential disaster declaration for extreme heat, unlocking the Federal Emergency Management Agency’s response capabilities. And all the while, more than 30 wildfires are blazing across the state of Arizona. —Will Kubzansky
July 26: For most of the summer, stories about extreme heat in the U.S. have been limited to the South and Southwest. That’s changed in the last few days, as heat is forecast to scorch the Midwest and Northeast this week. On Thursday, New York will see highs in the mid-90s and D.C. up to 99 — both with heat indexes in the mid-100s. In Kansas City, highs will sit in the 100s through Friday and climb back up into the triple digits again on Monday; Indianapolis will reach 99 degrees Friday.
Late July is an appropriate time for heat waves — and this burst does not look like a lengthy one, with the 10-day forecast dipping back into the 80s — but it’s also worth noting that cities like D.C. are less prepared for extreme heat than Miami or Phoenix. D.C. has entered a hot weather emergency, but in New York, some advocates have cautioned that the city is not ready for the challenges ahead. —Will Kubzansky
July 26: Devastating consequences of the climate crisis are playing out in Algeria, Greece, Italy, and Tunisia, as wildfires spread and take dozens of lives — more than 40 in total and 34 in Algeria alone. The wildfires are being driven in part by intense heat, up to 119.7 degrees Fahrenheit in Algeria and 120 degrees in Tunisia. While those temperatures have cooled slightly, they will reach up to 111 degrees in Tunis come Friday and already climbed into the triple digits in Greece on Wednesday. Meanwhile, Greek authorities have evacuated more than 20,000 people from Rhodes, a popular vacation spot. —Will Kubzansky
July 25: The summer has offered a deluge of heat headlines — scrolling through this page is the proof. But zooming out, the context matters: Has this summer’s heat been uniquely driven by climate change? The answer is almost certainly yes, according to a study from researchers at Imperial College London, the Royal Netherlands Meteorological Institute, and the Red Cross Red Crescent Climate Centre.
The flash study is not peer-reviewed — it moved too quickly to go through that process — but it notes that “without human-induced climate change these heat events would … have been extremely rare.” The high temperatures in North America and Europe, it adds, would have been “virtually impossible” without climate change. Heat waves may have still occurred, but the key is the intensity: In the U.S., Europe, and China, climate change accounted for between 1 to 2.5 degrees Celsius (1.8 to 4.5 degrees Fahrenheit) of additional heat. —Will Kubzansky
July 17: Records are falling left and right in the Southwest. At 118 degrees Fahrenheit, Phoenix broke its all time high temperature record on Saturday. The city is also approaching breaking its record for the most 110 degree days in a row. In El Paso, the temperature at the airport has hit 100 degrees for 32 consecutive days, the longest streak ever. And according to The New York Times, the National Weather Service called for 45 record highs across the U.S. last weekend.
And as wildfires burn in Southern California, the heat wave is showing no signs of letting up. Phoenix will see highs in the 110s through Monday, as will Las Vegas. At this point, the heat wave has been classified as another heat dome, and Texas is feeling the brunt of it too, with San Antonio and Austin under excessive heat warnings. The heat wave is most dangerous for vulnerable members of society, especially people who are homeless and seniors — placing an outsized and crucial burden on cooling centers in the Southwest. —Will Kubzansky
July 14: A year after Europe saw 60,000 excess deaths due to heat waves, according to a study published by the scientific journal Nature Medicine, Southern Europe is scorching again. In Greece, the Acropolis closed midday Friday to tourists with high temperatures in Athens expected to reach 104 degrees. Parts of Spain saw temperatures going up to 113 degrees Monday, and another heat wave is expected to arrive Sunday. Italy, in the meantime, is expecting that next week could break the record for the highest temperatures ever recorded on the continent.
Europe has taken a new approach to heat waves — giving them names like hurricanes in an effort to raise awareness about their severity, an idea my colleague Neel Dhanesha wrote about last year. The first round of heat this week was dubbed Cerberus; the second round set to arrive this weekend is named Charon. —Will Kubzansky
Grant Faint/Image Bank via Getty Images
July 12: In a summer full of record-breaking heat, the fact that it’s hot in Death Valley is almost comforting. On Sunday, the national park in the Mojave Desert, known for being the hottest place on Earth, is projected by the National Weather Service to reach 130 degrees Fahrenheit, which would probably tie the record for the world’s highest temperature. The uncertainty stems from some controversy surrounding the record: While the valley was said to have reached temperatures of 134 degrees in 1913, experts have questioned the legitimacy of that reading. That leaves 130 degree days in 2020 and 2021 as the hottest temperatures on record — in Death Valley or anywhere.
While Death Valley’s heat is something of a novelty, it has catastrophic impacts elsewhere. Las Vegas’s high will only be 12 degrees cooler (118 degrees), and temperatures will reach 106 degrees on the same day in San Bernardino. —Will Kubzansky
July 10: After 10 days with high temperatures above 110 degrees, the highs in Phoenix are forecasted to eclipse that mark for at least the next nine days. According to the National Weather Service’s Phoenix office, the record for consecutive 110-degree days is 18; the office is placing the probability that the record gets shattered at 50%. And like Texas’ heat dome earlier this summer, evening temperatures aren’t declining as substantially as they usually do, leaving Arizonans without relief.
In New Mexico, the National Weather Service office out of Albuquerque is describing the week ahead as “near-record heat.” And temperatures in Las Vegas, Nevada, are set to get even more brutal over the course of the week, with the high going from 107 degrees on Monday to a forecasted high of 117 on Sunday. The heat will also lead to brutal temperatures in Death Valley — potentially up to 127 degrees on Sunday — according to the The Washington Post. —Will Kubzansky
July 10: Texas can’t catch a break this summer — and the South is catching yet another heat wave as well. Heat indexes in Dallas, Houston, New Orleans, and Miami are set to reach 107 to 108 degrees this week. Water temperatures around South Florida are well above average, and the chance that rain breaks the heat in the area is limited over the next few days. This year is already the hottest on record in Miami, according to WLRN. —Will Kubzansky
July 7: Phoenix and Tuscon are under excessive heat warnings for at least the next six days. Afternoon highs are projected to reach between 105 and 115 degrees Fahrenheit — Friday will get up to 112 degrees in Phoenix — bringing temperatures above average for early July, according to AZCentral.
It might last well into the month. According to the National Weather System’s warning: “We are still anticipating this current heat wave to continue through next week and likely beyond with it rivaling some of the worst heat waves this area has ever seen.” A big heat wave also brings pressure to the electric grid, particularly in heavily populated areas like Phoenix, as residents crank up their ACs. One study from earlier this year showed that a five-day heat wave and blackout would combine to send more than 50% of the city’s population to the emergency room.
It’s also not just Arizona that will catch the worst of this wave: New Mexico, Las Vegas and Death Valley all have scorching temperatures in store over the next week, The Washington Post notes. —Will Kubzansky
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July 6:Outdoor work came to a halt in Beijing as temperatures reached 104 degrees Thursday in the Chinese capital. A heat wave is gripping parts of China, including the capital and the nearby Henan province. Before 2023, Beijing had experienced temperatures above 104 degrees six times, CNN reported. This year alone, the temperature has eclipsed that mark on five days. In Taiwan, temperatures are set to reach 104 degrees Saturday, according to the country’s Central Weather Bureau. All the while, flooding has also led to devastation in China, causing 15 deaths in Chongqing, Hunan province, and elsewhere. —Will Kubzansky
June 30 - July 5: In the Antelope Valley and Santa Clarita Valley, temperatures reached 105 and 101 degrees respectively Monday, the Los Angeles Times reported. David Gomberg, an NWS forecaster, told the Times that high heat is to be expected in Southern California around now — to some extent, the weather is “routine,” he said.
Still, temperatures climbed rapidly in the Los Angeles area beginning Friday, especially inland and in the desert. And because the rise came so suddenly following a temperate period, it may have posed an unusually high risk to Californians who hadn’t yet acclimated to the season’s hotter temperatures. Extreme heat can also create arid conditions begetting wildfires, though no reports of serious fires in California have emerged following July 4 fireworks displays. —Will Kubzansky
July 5: This year’s Fourth of July was the world’s hottest day on record, and that record will likely be broken again this summer. In Texas, the heat was nothing new: The last day El Paso recorded a high temperature under 100 degrees was June 15. Since then, every day has gotten up to the triple digits — with the heat reaching 108 degrees on June 26 and 27.
In other words, it’s still really, really hot in Texas as a heat dome remains firmly planted over the state. Some parts of Texas have seen a handful of cooler days — July 4 wasn’t quite as brutal in Houston, for instance, and San Antonio’s temperatures have largely fallen back into the ‘90s. But the southern part of the state is in what the San Antonio Express-News describes as a “rut”: Heat is giving way to marginally cooler temperatures but the weather is expected to get hotter and more humid again.
For older people or people who work outdoors, the sustained heat has proven especially deadly. The vast majority of Texas’s prisoners, meanwhile, are without air conditioning. —Will Kubzansky
The North Atlantic Ocean is in the middle of a startling heat wave that could have far-reaching repercussions.
The weeks-long marine heat wave broke records for the months of May and is expected to do the same in June. Sea surface temperatures around the U.K. and northern Europe are an astonishing 9 degrees Fahrenheit above average in places, The Washington Post reports.
“Totally unprecedented,” Richard Unsworth, a biosciences professor at the U.K.’s Swansea University, told CNN. It’s “way beyond the worst-case predictions for the changing climate of the region.” Scientists say the warming oceans could have significant consequences, from harming marine life to decreasing the sea’s capacity to absorb pollution.
Above-average heat has also hit the U.K. Temperatures are expected to hit 89 degrees Fahrenheit in southeast England over the weekend.
As a flotilla in the Atlantic searched for the missing Titan submersible, the prominent environmental writer Bill McKibben tweeted, “The truly terrifying news this week is not what happened deep beneath the sea, it’s what’s going on at the surface.” —Annie Xia
June 22: Texans will only get a brief reprieve from the most extreme highs of their heat wave before temperatures pick back up early next week. Notably, temperatures aren’t falling considerably at night, making the heat even more dangerous. North Texas will see the mercury rise up to 104 degrees through Thursday, with the small caveat that humidity will decline into a more comfortable range as the week goes on. In parts of Southwest Texas, the heat won’t let up at all: the high temperatures in Del Rio will hover between 107 and 110 through next Wednesday.
The Electric Reliability Council of Texas issued its first voluntary conservation notice of the heat wave this past Tuesday. While the utility was able to meet demand, it requested that all Texans, especially government agencies, reduce their electricity use.
Mexico is similarly seeing scorching temperatures, which have led to eight deaths already. And high heat in the Rio Grande Valley means that migrants who traverse the border in Southwest Texas could be left exposed to the same high heat, which can have deadly consequences. —Will Kubzansky
Week of June 19: Temperatures in the northern Indian states of Uttar Pradesh and Bihar, two of the most populous in the country, reached as high as 115 degrees Fahrenheit (46 degrees Celsius), CNN reports. The extreme heat triggered power cuts, leaving people without running water, fans, or air conditioners.
The Associated Pressreports nearly 170 people had died as of June 20, overwhelming hospitals, morgues, and crematoria — although state officials dispute the connection to the heat wave. Nearly half of the deaths came from a single district, Ballia, in Uttar Pradesh; officials say they have opened an investigation into the cause, which they say could be linked to contaminated water. Members of opposition parties blame the state government and its chief minister, Yogi Adityanath, for not investing enough in medical facilities or warning residents about the heat wave ahead of time. —Neel Dhanesha
June 19: The numbers from Texas’ heat wave are already striking: Dallas tied a humidity record on Thursday, and tens of millions of Texans woke up Friday to heat advisories or warnings. Temperatures will approach — and possibly break — records in Austin early next week, with highs between 104 and 106 through Wednesday. In the area, the heat indices will be highest over the Rio Grande plains and coastal plains, according to the National Weather Service’s Austin/San Antonio office.
Houston, in the meantime, saw its first excessive heat warning since 2016, with heat indices potentially breaking 115 degrees Friday and Saturday. Texas’ grid has held up (so far) — though the Electric Reliability Council of Texas has projected that next week will shatter the record levels of electricity demand that were just set this week, thanks to the number of air conditioners expected to be on full blast. —Will Kubzansky
June 14: Triple-digit heat has arrived early in Texas. Large parts of central and southeast Texas saw the heat index climb into the 100s Wednesday, topping out in McAllen at a searing 118. The heat wave is expected to spread and last through the week, hitting San Antonio, Dallas, Houston, and Austin, where it will feel like 112 degrees Thursday.
But while meteorologists watch for record heat and humidity, others will keep their eye on the state’s isolated electricity grid. Its operators, the Electric Reliability Council of Texas, warned of record-breaking electricity use Friday, an ominous signal for a state that has struggled with deadly blackouts in recent years. But this is just Texas’s first test of the summer: The grid operators noted that the record-breaking demand will likely be surpassed later in the summer. —Will Kubzansky
June 7-11: As skies over New York and Washington, D.C., turned orange from wildfire smoke, Puerto Rico and nearby Caribbean nations sweltered under a heat dome. The Heat Index, which takes into account both heat and humidity, went as high as 125 degrees in parts of Puerto Rico — a number that Jeff Berardelli, chief meteorologist at Tampa Bay’s WFLA-TV, said was astonishing. Temperature records broke across the island.
The Puerto Rican power grid still hasn’t recovered after Hurricane Maria hit the island in 2017, and over 100,000 Puerto Ricans reportedly lost power (though, as Pearl Marvell pointed out in Yale Climate Connections, the exact number cannot be verified because the island’s power company asked PowerOutage.us, which tracks outages, to stop collecting data on Puerto Rico until it can “replace their technology and provide more accurate data”). As I wrote in May, the combination of extreme heat and blackouts has the potential to be incredibly deadly, though no deaths were reported from this heat dome as of publication. —Neel Dhanesha
June 5: Large parts of China have seen record-breaking heat over the past month, one year after the worst heat wave and drought in decades hit the country. This year, Yunnan and Sichuan provinces saw temperatures exceed 40° C (104° F); according to CNN, heat in some parts of the country was so bad that pigs and rabbits died on farms and carp being raised in rice fields "burned to death" as water temperatures rose. Henan province had the opposite problem; extreme rain flooded wheat fields there, ruining crops in the country's largest wheat-growing region.
Meanwhile, a prolonged heat wave in Vietnam is keeping temperatures between 26 and 38 degrees Celsius (78.8 and 100.4° F), prompting officials to turn off street lights and ask citizens to cut down on their power consumption to avoid blackouts. VNExpress reports that many Vietnamese citizens who can't afford air conditioners are seeking respite in public spaces like libraries, buses, department stores, and cafes. —Neel Dhanesha
May 12: Some 12 million people in Washington and Oregon were under a heat advisory for four days starting May 12 as temperatures in the region topped out at more than 20 degrees above the normal high at that time of year, which should have been in the mid-60s.
"It’s harder for people in the Pacific Northwest to cool down when it’s 90 out than for people in, say, Phoenix or Las Vegas — cities that were constructed with heat in mind," wrote Heatmap Founding Staff Writer and Washington native Jeva Lange in her larger story about this heat wave. "Seattle, for example, is the second-least-air-conditioned metro area in the country (behind only “the coldest winter I ever spent was a summer in” San Francisco). Just over half of the homes in the area have a/c, and many of them are new buildings." —Neel Dhanesha and Jeva Lange
April: A large, deadly heat wave baked much of Asia for two weeks in April,Axios reported. Parts of India saw temperatures beyond 40°C (104°F), while temperatures in Thailand reached their highest levels ever, breaking past 45°C (113°F) for the first time in that country's history. Thirteen people died in Mumbai, and hundreds of people across the Asian continent were hospitalized. —Neel Dhanesha
This article was first published on June 5, 2023. It was last updated on September 6, 2023, at 3:59 PM ET.
More about heat and how the world is coping:
1. The Deadly Mystery of Indoor Heat
2. Don’t Be Too Chill About Your Air Conditioning Dependency
3. America Is Depending on Renewables This Summer
4. Dermatologists Have Bad News to Share About Climate Change
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This is the first story in a Heatmap series on how clean energy has fared under Trump.
The renewables industry was struggling even before Donald Trump made his return to the White House. High interest rates, snarled supply chains, and inflation had already dealt staggering blows to offshore wind; California turned hostile to the residential solar market; and even as deployment of utility-scale solar accelerated, profits haven’t necessarily followed. (Those were still reserved for the fossil fuel industry.)
Then Trump came into office, issuing a barrage of executive orders that, at best, didn’t help, and at worst threatened to choke off the industry’s remaining avenues for growth. Now, Republican legislators are eyeing the Inflation Reduction Act for red meat to feed their tax cut machine; Elon Musk — himself the richest green tech entrepreneur of all time — is captaining an effort to slash the size of the federal government, particularly environmental programs; and the federal regulatory apparatus has essentially ground to a halt.
The early days of the Trump presidency have turned a clean energy slump into a kind of green freeze, with projects being cancelled and clean energy investors in many cases fixating on hypothetical policy changes, as opposed to the ins and outs of any given quarter. This creates a kind of trap for green energy companies, which are being punished in the immediate term for bad results while investors sit on the sidelines until the final resolution of the IRA comes into focus.
Speaking about the solar industry specifically, Morningstar analyst Brett Castelli told me that near term viability is not going to be about the specifics of any given company’s financial performance. “It’s going to be about how much the IRA is potentially changed.”
That’s likely the case across the green energy sectors. The iShares Global Clean Energy ETF, which tracks a number of renewables companies, is down 14% since November 5, and down 20% in the past year. “All businesses like certainty,” Castelli said. “The renewables market right now is facing a high degree of uncertainty in regards to what changes are coming to the IRA.”
But not every company has been affected equally. Those that were already flagging have been quick to blame the political environment, while others have gamely tried to explain to investors and the public how their lines of business align with the Trump administration’s priorities.
Executives at the residential solar company Sunnova — whose stock has fallen to below a dollar a share since it issued a “going concern” notice, essentially notifying investors that its existence as a company was under threat — mentioned “policy” or “political” or “politicians” six times in its earnings call last week. Chief Executive John Berger told an analyst that the reason for the going concern notice was that “the overall environment is terrible. I mean, it’s the political environment, the capital markets,” and that the company “struggled to close some things after the election.”
Berger stepped down Monday, and Sunnova’s former chief operating officer Paul Mathews immediately took over. Mathews “will focus on disciplined growth, stronger cash generation, cost efficiency, and enhancing the customer experience,” the company said.
Other companies have told investors and the public that they’re scrapping expansion plans, in many cases due to a policy change or a market change running downhill from policy.
“Manufacturing is probably where we see the biggest concern,” Maheep Mandloi, a stock analyst at Mizuho Securities, told me. “A lot of solar and battery projects are getting pushed out.”
Among them, battery manufacturer KORE Power, said in February that it was canceling a $1 billion battery project in Arizona. The Arizona facility was going to be supported with federal financing, specifically a loan from the Energy Department’s Loan Program Office for up to $850 million, but theconditional commitment never turned into cash in hand before the end of the Biden administration. Its new chief executive, Jay Bellows, told Canary Media that the company wanted to retrofit an existing facility into a battery plant instead.
Aspen Aerogels, which makes thermal barriers for batteries in electric vehicles, told investors in February that it wouldn’t move forward with a planned new plant in Statesboro, Georgia, and would instead “maximize capacity” at its Rhode Island plant. The company’s chief financial officer noted that it had already “decided to right-time” its Statesboro project in early 2023, “pre-empting a reset in EV demand expectations.”
And just last week, Ascend Elements, a battery materials company, said it was scrapping plans to manufacture cathode active material at its Hopkinsville, Kentucky plant, the Times Leader reported Thursday. Ascend said that it had agreed with the Department of Energy to cancel a $164 million grant that would support cathode active material (a key battery component) manufacturing, although a separate, $316 million grant for cathode precursor technology “remains active.”
But optimism still abounds — and it has nothing to do with any hopes about the fate of grants and tax credits under the IRA. Regardless of the law’s fate, the exuberance over artificial intelligence may prove to be an even greater subsidy.
In contrast to Sunnova, Sunrun — another residential solar company whose stock price has flagged since the election, but whose ability to stay in business has not been questioned — put a much more neutral spin on the political environment. Chief Executive Mary Powell told investors during the company’s earnings call in late February, “The fundamental long-term demand drivers for our business are incredibly strong and unrelated to any political party affiliation. Americans want greater energy independence and control of their lives and their pocketbooks. The country also needs more power from all sources to fuel rapid growth in electrification and data centers, and our growing fleet of energy resources will be part of the solution.”
Where once executives focused their rah-rah optimism on the declining costs of renewables, today they’re talking up their products’ quick path to deployment. The speed with which renewables can be built and switched on — especially solar and storage — compares favorably to the four-to-five year development timelines for new gas-fired plants. NextEra chief executive John Ketchum told analysts in a January earnings call “you can build a wind project in 12 months, a storage facility in 15, and a solar project in 18 months.”
That’s either the light at the end of the tunnel or the pot of gold at the end of the rainbow, depending on your level of fatalism or skepticism.
This oncoming demand could reignite the renewables industry even if it potentially loses access to generous IRA subsidies, Ben Hubbard, the chief executive of the infrastructure advisory firm Nexus Holdings, told me.
“The hyperscale datacenter demand is pretty massive, and when you have to really start massively upgrading your transmission and distribution infrastructure, those rates get passed on, unfortunately, to the average ratepayer like me and you and everybody else.” With higher rates, renewables could become profitable and investable on their own, without IRA subsidies, Hubbard said.
NextEra, a major renewables developer that also operates a natural gas fleet, has been one of the main promoters of the “speed to power” narrative. In its January earnings call, Ketchum told analysts, “We’re expecting load demand to increase over 80% over the next five years, six-fold over the next 20 years. And if you think about generation types and needing all of the above, they’re not all created equally in terms of timing.”
Although the Trump administration is seeking to unleash fossil fuel development, power plants don’t build themselves. They need, at the very least, turbines, and those gas turbines are not easy to get your hands on. As Heatmap has reported, manufacturer GE Vernova has only modest plans to increase capacity, and is already getting reservations for turbine slots in 2027 and 2028.
“With gas-fired generation, the country is starting from a standing start,” NextEra CEO Ketchum said on the earnings call. “We need shovels in the ground today because our customers need the power right now.”
Developers and investors hope this means that data center developers and utilities will become both voracious and omnivorous in their power demand.
“I think what you’re going to see is the big tech companies, especially, are going to just have to eat the cost if they want to win the AI race,” Hubbard told me. “They’re going to take natural gas fuel, and they’re going to take biomass power, and they’re going to take solar. They’re going to take it all, because it’s almost insignificant relative to getting ahead of AI demand.”
Most of the industry, however, is gamely working through an environment where their day-to-day business may be fine, but their investors are still in wait-and-see mode.
“The common feedback we hear from a lot of investors is, 'I’ll just probably come back once the dust settles and I know exactly what things are going to change,” Mandloi told me.
That’s even as executives point to a glorious future of AI-driven electricity demand. But investors may be waiting to count their chips from the IRA before they’re willing to take a flyer on powering data centers that are yet to be built.
And there’s nothing certain about the AI boom, either. More computationally efficient Chinese models have thrown that energy narrative into doubt, driving down the share price of Nvidia, which makes the chips that consume all that data center power (along with the share prices of power companies with large natural gas fleets). That stock is down by almost 20% so far this year. If the chip designer’s AI profits are less than previously thought, the electron providers may have to settle for less, as well. Renewables companies are hoping the data center boom will be a case of “if you build it, they will come,” but investors aren’t yet quite willing to buy it.
For those keeping score, that’s three more than wanted to preserve them last year.
Those who drew hope from the letter 18 House Republicans sent to Speaker Mike Johnson last August calling for the preservation of energy tax credits under the Inflation Reduction Act must be jubilant this morning. On Sunday, 21 House Republicans sent a similar letter to House Ways and Means Chairman Jason Smith. Those with sharp eyes will have noticed: That’s three more people than signed the letter last time, indicating that this is a coalition with teeth.
As Heatmap reported in the aftermath of November’s election, four of the original signatories were out of a job as of January, meaning that the new letter features a total of seven new recruits. So who are they?
The new letter is different from the old one in a few key ways. First, it mentions neither the Inflation Reduction Act nor its slightly older cousin, the Infrastructure Investment and Jobs Act, by name. Instead, it emphasizes “the importance of prioritizing energy affordability for American families and keeping on our current path to energy dominance amid efforts to repeal or reform current energy tax credits.” The letter also advocates for an “all-of-the-above” approach to energy development that has long been popular among conservatives but has seemed to fall out of vogue under Trump 2.0.
Lastly, while the new letter repeats the previous version’s emphasis on policy stability for businesses, it adds a new plea on behalf of ratepayers. “As our conference works to make energy prices more affordable, tax reforms that would raise energy costs for hard working Americans would be contrary to this goal,” it reads. “Further, affordable and abundant energy will be critical as the President works to onshore domestic manufacturing, supply chains, and good paying jobs, particularly in Republican run states due to their business-friendly environments. Pro-energy growth policies will directly support these objectives.”
As my colleagues Robinson Meyer and Emily Pontecorvo have written, tariffs on Canadian fuel would raise energy prices in markets across the U.S. That includes some particularly swingy states, e.g. Michigan, which perhaps explains Rep. James’ seeming about-face.
Republicans’ House majority currently stands at all of four votes, so although 21 members might not be huge on the scale of the full House, they still represent a significant problem for Speaker Johnson.
On the Greenhouse Gas Reduction Fund, Canada’s new prime minister, and CERAWeek
Current conditions: Firefighters successfully controlled brush fires in Long Island that prompted New York Gov. Kathy Hochul to declare a state of emergency • Brisbane, Australia, recorded its wettest day in more than 50 years • Forecasters are keeping an eye on a storm system developing across the central U.S. that could pack a serious punch this week.
The nonprofit Climate United filed a lawsuit over the weekend against the Environmental Protection Agency and Citibank for withholding $7 billion in climate funds awarded as part of the Biden administration’s Inflation Reduction Act. The move escalates a dispute over some $20 billion in grants from the IRA’s Greenhouse Gas Reduction Fund, which was designed to help mobilize private capital toward clean energy and climate solutions. President Trump’s EPA Administrator Lee Zeldin has been on a mission to claw back the funds, claiming their distribution was rushed and mismanaged. In its lawsuit, Climate United says it has been unable to access the $7 billion it was awarded, and that the EPA and Citibank have given no explanation for this. It wants a judge to order that the money be released. “We’re not trying to make a political statement here,” Beth Bafford, chief executive of Climate United, toldThe New York Times. “This is about math for homeowners, for truck drivers, for public schools — we know that accessing clean energy saves them money that they can use on far more important things.” The Trump administration has reportedly demanded that the eight organizations tapped to receive the money turn over records to the FBI and appear in federal court later this month.
Canada’s Liberal Party has elected Mark Carney, a net-zero finance advocate, to succeed Justin Trudeau as prime minister. Carney is not a career politician. Instead, he comes from the financial world, having overseen both the Bank of Canada and the Bank of England, and is an evangelist for green investment and a net-zero financial sector. He was the UN Special Envoy for Climate Action and Finance in 2019, and “has made clean energy, climate policies and economic prosperity for Canada some of the central facets of his campaign,” CNN reported. If he wins the upcoming general election, Carney will be tasked with navigating President Trump’s tariffs and making key decisions about the future of Canada’s vast natural resources, including fossil fuels and rare minerals.
The U.S. has withdrawn from yet another global climate initiative, this one aimed at helping developing nations recover from natural disasters. The United Nations loss and damage fund was one of the biggest wins to come out of COP28 in 2023, with nearly 200 countries signing on in support. It’s expected to start funding projects this year. About $740 million has been pledged so far, and the U.S. has said it will give about $17.5 million, though it’s unclear if that money will actually be handed over now. “This decision, made by the nation with the largest historical responsibility for climate change, jeopardises vital support for vulnerable countries facing irreversible climate impacts,” said Ali Mohamed, the chair of the African Group of Negotiators.
The energy industry descends on Houston, Texas, this week, for the annual CERAWeek conference. This year’s event, titled “Moving Ahead: Energy Strategies for a Complex World,” will focus on the changing global energy landscape. Key themes include shifting regulations, the turbulent oil and gas market, electrification and power demand, the rise of AI, managing emissions, and the policy outlook for renewables. According toReuters energy columnist Ron Bousso, fossil fuel executives are going into the conference with a case of “Trump buyer’s remorse” as new tariffs and geopolitical policies from the Trump administration have “created turmoil in financial markets and clouded the outlook for the global economy and energy prices.”
Argentina will observe three days of national mourning after 16 people were killed in flash flooding over the weekend triggered by unprecedented rainfall. Nearly a year’s worth of rain – about 16 inches – fell in just eight hours in the port city of Bahia Blanca in the Buenos Aires province. Many people are still missing. Environment official Andrea Dufourg said the event was a clear example of climate change. “Unfortunately this will continue to take place,” Dufourg said. “We have no other option than to prepare cities, educate citizens, and establish effective early warning systems.”
Twenty-one House Republicans have signed a letter urging the GOP to uphold the Inflation Reduction Act’s clean energy tax credits in their budget bill, warning that gutting the credits would “risk sparking an energy crisis in our country, resulting in drastically higher power bills for American families.” That’s three more than signed a similar letter during the last Congress.