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And make a meaningful difference in the fight against climate change, while you’re at it.
Welcome to
Decarbonize Your Life, Heatmap’s special report that aims to help you make decisions in your own life that are better for the climate, better for you, and better for the world we all live in.
This is our attempt, in other words, to assist you in living something like a normal life while also making progress in the fight against climate change. That means making smarter and more informed decisions about how climate change affects your life — and about how your life affects climate change. The point is not what you shouldn’t do (although there is some of that). It’s about what you should do to exert the most leverage on the global economic system and, hopefully, nudge things toward decarbonization just a little bit faster.
We certainly think we’ve hit upon a better way to think about climate action, but you don’t have to take our word for it. Keep reading here for more on how (and why) we think about decarbonizing your life — or just skip ahead to our recommendations.
At this point, everyone knows that individual action won’t solve climate change. Didn’t BP invent the term “carbon footprint” in 2004 so as to distract from fossil fuel companies’ guilt and greed?
As the journalist Rachel Cohen has observed, around the 2010s it became unpopular to believe that individual action could help address any major social problem. And sure, it’s true that only collective action — achieved through something like the political system — will let us eventually manage climate change at the global level.
But at Heatmap, we believe that that isn’t quite the whole story. Just because politics and collective action are the only things that can solve climate change doesn’t mean they are the only things that can do something about climate change. What’s more, the problem of carbon emissions — and the stickiness of fossil fuels — emerges from a tight knot of chemical efficiency, political power, and logistical lock-in. If individual consumers can pry at that knot, can make it a little easier to imagine a post-fossil energy system, then they can realize a zero-carbon world a little sooner.
That way of thinking about climate change, however, requires us to think somewhat differently about how to take individual action in the first place. Often, when you read about how to fight climate change as a person or family, the advice assumes that you want to reduce your responsibility for climate change. You’re advised to turn down the thermostat in the winter (or turn it up in the summer), shut off the lights when you leave the room, and compost.
This advice assumes that the reader’s goal is to personally exculpate themselves or their family from global warming — and to assuage their own guilt for participating in a polluting system.
At its most sophisticated, this advice can be valuable insofar as it can help you cut your marginal carbon emissions. The most precise versions of these recommendations often speak in terms of emissions abatement: They might advise, say, that switching to a plant-based diet could save 0.8 tons of carbon emissions a year.
You’ll see some of that kind of recommendation in this project: It’s a valid way to think about individual actions, and it works especially well in some domains, such as food. But it’s not, in our view, the best way of thinking about individual action to fight climate change.
That’s because it is essentially impossible to exculpate yourself from climate change. That’s not being fatalistic. It’s just a fact. Simply by living in the year 2024, your life is enmeshed in a sprawling economic network that devours fossil fuels as its great lifestyle subsidy. Look out the nearest window — do you see cars, asphalt, power lines, sidewalks, buildings? Do you see steel-framed structures or a plane cutting its way across the sky? None of those things could exist without fossil fuels. And unless you’re looking into wild and unkempt wilderness (if so, lucky you!), then even the plants and grass out your window, the food in your pantry, grew up on fertilizer that was manufactured with fossil fuels. If you live in a rich or middle-income country, buy goods and clothes, eat food, use electricity, or even leave your house by any means other than walking, then you are responsible, to some degree, for climate change.
Trying to zero out your personal carbon footprint, in other words, is a fool’s errand. What you can do, however, is maximize the degree to which you’re building a new, post-fossil-fuel world.
To be clear, we don’t mean that in a woo-woo way. We’re not saying you should imagine a kumbaya world where we all hold hands and take public transit to the nearest all-volunteer renewable-powered co-op. We’re saying that there are real, already existing products and technologies that must become a bigger part of today’s built environment if we are to have any hope of solving climate change. What you can do — and what we recommend in this guide — is help take those technologies from the fringes into the center of everyday life. If you want to decarbonize the whole planet, you should think about decarbonizing your life.
What we have tried to do here is not focus on how to reduce your marginal emissions — the number of tons that you, personally, are responsible for pumping into the environment. Instead, we’re trying to help you understand how to focus on high-leverage actions — the kinds of choices that can drive change throughout the energy system. That’s why in this guide you’ll find advice on how to switch to an EV, buy zero-carbon electricity, make your home more energy-efficient, and electrify your appliances. We also recommend these in the order that we think they’ll be most effective — to learn more about how we reached that ranking, read about our methodology here.
The kind of shifts we advise in this guide, to be clear, won’t solve climate change on their own. But they will help you alter the systems in which you’re enmeshed, and they’ll make you a smarter climate citizen.
Flying is maybe the trickiest climate question. Although it makes up a relatively small share of both global and U.S. emissions — about 2% each — it is among the most climate-polluting activities many Americans will do on a minute-to-minute basis. (Although if you live in a dense and walkable city like New York, San Francisco, or Washington, D.C., but travel frequently, then flying may make up a large share of your emissions.) It is probably also the most difficult “everyday” activity to decarbonize.
There is no practical substitute for long-distance or transcontinental flying. Today, only one ocean liner regularly makes the journey from New York to London, and it departs from each city only once a month. And unless you hitch a ride on a container ship, there is literally no slow boat to China. If you want to travel abroad, then you must fly. Even within the United States, there is essentially no substitute for long-distance flights. Europeans and East Asians can rely on superior long-distance rail systems, but America’s extensive road network, unusually high infrastructure costs, sclerotic rail agency, and chronic lack of transit investment mean that Americans are stuck with flying or driving.
Commercial aviation is a miracle of the modern world: It facilitates a level of global connectedness and international communication that earlier generations could only dream of. Affordable and long-distance passenger flight is, in many ways, the crowning achievement of our highly technical society, and it allows for the amount of global immigration and mass tourism that defines the modern world. (If you have a private jet, of course, stop using it. Because so few people take each flight, private jets are uniquely destructive for the climate, emitting every seven hours what the average American emits all year.)
Fossil fuels’ weight and energy density is ideal for flying. There is, right now, no drop-in replacement for jet fuel that is being produced at scale. So while we have some advice about how to mitigate your climate pollution from flying, it won’t make up a large part of this guide. Reduce the number of flights you take if you can, sure, and take more direct flights if possible. But the truth is that for now, there are smarter and more high-leverage decisions that you can make.
Only decarbonization can get us closer to tackling climate change once and for all. Our belief at Heatmap is that if you care about climate change, then decarbonization — and not mere emissions reductions — should be your guiding star. If you want to follow that star, then read on.
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Ecolectro, a maker of electrolyzers, has a new manufacturing deal with Re:Build.
By all outward appearances, the green hydrogen industry is in a state of arrested development. The hype cycle of project announcements stemming from Biden-era policies crashed after those policies took too long to implement. A number of high profile clean hydrogen projects have fallen apart since the start of the year, and deep uncertainty remains about whether the Trump administration will go to bat for the industry or further cripple it.
The picture may not be as bleak as it seems, however. On Wednesday, the green hydrogen startup Ecolectro, which has been quietly developing its technology for more than a decade, came out with a new plan to bring the tech to market. The company announced a partnership with Re:Build Manufacturing, a sort of manufacturing incubator that helps startups optimize their products for U.S. fabrication, to build their first units, design their assembly lines, and eventually begin producing at a commercial scale in a Re:Build-owned factory.
“It is a lot for a startup to create a massive manufacturing facility that’s going to cost hundreds of millions of dollars when they’re pre-revenue,” Jon Gordon, Ecolectro’s chief commercial officer, told me. This contract manufacturing partnership with Re:Build is “massive,” he said, because it means Ecolectro doesn’t have to take on lots of debt to scale. (The companies did not disclose the size of the contract.)
The company expects to begin producing its first electrolyzer units — devices that split water into hydrogen and oxygen using electricity — at Re:Build’s industrial design and fabrication site in Rochester, New York, later this year. If all goes well, it will move production to Re:Build’s high-volume manufacturing facility in New Kensington, Pennsylvania next year. “It takes off all the uncertainty around building a large manufacturing facility and allows us to move once we’re able.”
The number one obstacle to scaling up the production and use of cleaner hydrogen, which could help cut emissions from fertilizer, aviation, steelmaking, and other heavy industries, is the high cost of producing it. Under the Biden administration, Congress passed a suite of policies designed to kick-start the industry, including an $8 billion grant program and a lucrative new tax credit. But Biden only got a small fraction of the grant money out the door, and did not finalize the rules for claiming the tax credit until January. Now, the Trump administration is considering terminating its agreements with some of the grant recipients, and Republicans in Congress might change or kill the tax credit.
Since the start of the year, a $500 million fuel plant in upstate New York, a $400 million manufacturing facility in Michigan, and a $500 million green steel factory in Mississippi, have been cancelled or indefinitely delayed.
The outlook is particularly bad for hydrogen made from water and electricity, often called “green” hydrogen, according to a recent BloombergNEF analysis. Trump’s tariffs could increase the cost of green hydrogen by 14%, or $1 per kilogram, based on tariff announcements as of April 8. More than 70% of the clean hydrogen volumes coming online between now and 2030 are what’s known as “blue” hydrogen, made using natural gas, with carbon capture to eliminate climate pollution. “Blue hydrogen has more demand than green hydrogen, not just because it’s cheaper to produce, but also because there’s a lot less uncertainty around it,” BloombergNEF analyst Payal Kaur said during a presentation at the research firm’s recent summit in New York City. Blue hydrogen companies can take advantage of a tax credit for carbon capture, which Congress is much less likely to scrap than the hydrogen tax credit.
Gordon is intimately familiar with hydrogen’s cost impediments. He came to Ecolectro after four years as co-founder of Universal Hydrogen, a startup building hydrogen-powered planes that shut down last summer after burning through its cash and failing to raise more. By the end, Gordon had become a hydrogen skeptic, he told me. The company had customers interested in its planes, but clean hydrogen fuel was too expensive at $15 to $20 per kilogram. It needed to come in under $2.50 to compete with jet fuel. “Regional aviation customers weren’t going to spend 10 times the ticket price just to fly zero emissions,” he said. “It wasn’t clear to me, and I don’t think it was clear to our prospective investors, how the cost of hydrogen was going to be reduced.” Now, he’s convinced that Ecolectro’s new chemistry is the answer.
Ecolectro started in a lab at Cornell University, where its cofounder and chief science officer Kristina Hugar was doing her PhD research. Hugar developed a new material, a polymer “anion exchange membrane,” that had potential to significantly lower the cost of electrolyzers. Many of the companies making electrolyzers use designs that require expensive and supply-constrained metals like iridium and titanium. Hugar’s membrane makes it possible to use low-cost nickel and steel instead.
The company’s “stack,” the sandwich of an anode, membrane, and cathode that makes up the core of the electrolyzer, costs at least 50% less than the “proton exchange membrane” versions on the market today, according to Gordon. In lab tests, it has achieved more than 70% efficiency, meaning that more than 70% of the electrical energy going into the system is converted into usable chemical energy stored in hydrogen. The industry average is around 61%, according to the Department of Energy.
In addition to using cheaper materials, the company is focused on building electrolyzers that customers can install on-site to eliminate the cost of transporting the fuel. Its first customer was Liberty New York Gas, a natural gas company in Massena, New York, which installed a small, 10-kilowatt electrolyzer in a shipping container directly outside its office as part of a pilot project. Like many natural gas companies, Liberty is testing blending small amounts of hydrogen into its system — in this case, directly into the heating systems it uses in the office building — to evaluate it as an option for lowering emissions across its customer base. The equipment draws electricity from the local electric grid, which, in that region, mostly comes from low-cost hydroelectric power plants.
Taking into account the expected manufacturing cost for a commercial-scale electrolyzer, Ecolectro says that a project paying the same low price for water and power as Liberty would be able to produce hydrogen for less than $2.50 per kilogram — even without subsidies. Through its partnership with Re:Build, the company will produce electrolyzers in the 250- to 500-kilowatt range, as well as in the 1- to 5-megawatt range. It will be announcing a larger 250-kilowatt pilot project later this year, Gordon said.
All of this sounded promising, but what I really wanted to know is who Ecolectro thought its customers were going to be. Demand for clean hydrogen, or the lack thereof, is perhaps the biggest challenge the industry faces to scaling, after cost. Of the roughly 13 million to 15 million tons of clean hydrogen production announced to come online between now and 2030, companies only have offtake agreements for about 2.5 million tons, according to Kaur of BNEF. Most of those agreements are also non-binding, meaning they may not even happen.
Gordon tied companies’ struggle with offtake to their business models of building big, expensive, facilities in remote areas, meaning the hydrogen has to be transported long distances to customers. He said that when he was with Universal Hydrogen, he tried negotiating offtake agreements with some of these big projects, but they were asking customers to commit to 20-year contracts — and to figure out the delivery on their own.
“Right now, where we see the industry is that people want less hydrogen than that,” he said. “So we make it much easier for the customer to adopt by leasing them this unit. They don’t have to pay some enormous capex, and then it’s on site and it’s producing a fair amount of hydrogen for them to engage in pilot studies of blending, or refining, or whatever they’re going to use it for.”
He expects most of the demand to come from industrial customers that already use hydrogen, like fertilizer companies and refineries, that want to switch to a cleaner version of the fuel, or hydrogen-curious companies that want to experiment with blending it into their natural gas burners to reduce their emissions. Demand will also be geographically-limited to places like New York, Washington State, and Texas, that have low-cost electricity available, he said. “I think the opportunity is big, and it’s here, but only if you’re using a product like ours.”
On coal mines, Energy Star, and the EV tax credit
Current conditions: Storms continue to roll through North Texas today, where a home caught fire from a lightning strike earlier this week • Warm, dry days ahead may hinder hotshot crews’ attempts to contain the 1,500-acre Sawlog fire, burning about 40 miles west of Butte, Montana• Severe thunderstorms could move through Rome today on the first day of the papal conclave.
The International Energy Agency published its annual Global Methane Tracker report on Wednesday morning, finding that over 120 million tons of the potent greenhouse gas were emitted by oil, gas, and coal in 2024, close to the record high in 2019. In particular, the research found that coal mines were the second-largest energy sector methane emitter after oil, at 40 million tons — about equivalent to India’s annual carbon dioxide emissions. Abandoned coal mines alone emitted nearly 5 million tons of methane, more than abandoned oil and gas wells at 3 million tons.
“Coal, one of the biggest methane culprits, is still being ignored,” Sabina Assan, the methane analyst at the energy think tank Ember, said in a statement. “There are cost-effective technologies available today, so this is a low-hanging fruit of tackling methane.” Per the IEA report, about 70% of all annual methane emissions from the energy sector “could be avoided with existing technologies,” and “a significant share of abatement measures could pay for themselves within a year.” Around 35 million tons of total methane emissions from fossil fuels “could be avoided at no net cost, based on average energy prices in 2024,” the report goes on. Read the full findings here.
Opportunities to reduce methane emissions in the energy sector, 2024
IEA
The Environmental Protection Agency told staff this week that the division that oversees the Energy Star efficiency certification program for home appliances will be eliminated as part of the Trump administration’s ongoing cuts and reorganization, The Washington Post reports. The Energy Star program, which was created under President George H.W. Bush, has, in the past three decades, helped Americans save more than $500 billion in energy costs by directing them to more efficient appliances, as well as prevented an estimated 4 billion metric tons of greenhouse gas from entering the atmosphere since 1992, according to the government’s numbers. Almost 90% of Americans recognize its blue logo on sight, per The New York Times.
President Trump, however, has taken a personal interest in what he believes are poorly performing shower heads, dishwashers, and other appliances (although, as we’ve fact-checked here at Heatmap, many of his opinions on the issue are outdated or misplaced). In a letter on Tuesday, a large coalition of industry groups including the Air-Conditioning, Heating, and Refrigeration Institute, the Association of Home Appliance Manufacturers, and the U.S. Chamber of Commerce wrote to EPA Administrator Lee Zeldin in defense of Energy Star, arguing it is “an example of an effective non-regulatory program and partnership between the government and the private sector. Eliminating it will not serve the American people.”
House Speaker Mike Johnson suggested that the electric vehicle tax credit may be on its last legs, according to an interview he gave Bloomberg on Tuesday. “I think there is a better chance we kill it than save it,” Johnson said. “But we’ll see how it comes out.” He estimated that House Republicans would reveal their plan for the tax credits later this week. Still, as Bloomberg notes, a potential hangup may be that “many EV factories have been built or are under construction in GOP districts.”
As we’ve covered at Heatmap, President Trump flirted with ending the $7,500 tax credit for EVs throughout his campaign, a move that would mark “a significant setback to the American auto industry’s attempts to make the transition to electric vehicles,” my colleague Robinson Meyer writes. That holds true for all EV makers, including Tesla, the world’s most valuable auto company. However, its CEO, Elon Musk — who holds an influential position within the government — has said he supports the end of the tax credit “because Tesla has more experience building EVs than any other company, [and] it would suffer least from the subsidy’s disappearance.”
Constellation Energy Corp. held its quarterly earnings call on Tuesday, announcing that its operating revenue rose more than 10% in the first three months of the year compared to 2024, beating expectations. Shares climbed 12% after the call, with Chief Executive Officer Joe Dominguez confirming that Constellation’s pending purchase of natural gas and geothermal energy firm Calpine is on track to be completed by the end of the year, and that the nuclear power utility is “working hard to meet the power needs of customers nationwide, including powering the new AI products that Americans increasingly are using in their daily lives and that businesses and government are using to provide better products and services.”
But as my colleague Matthew Zeitlin reported, Dominguez also threw some “lukewarm water on the most aggressive load growth projections,” telling investors that “it’s not hard to conclude that the headlines are inflated.” As Matthew points out, Dominguez also has some reason to downplay expectations, including that “there needs to be massive investment in new power plants,” which could affect the value of Constellation’s existing generation fleet.
The Rockefeller Foundation aims to phase out 60 coal-fired power plants by 2030 by using revenue from carbon credits to cover the costs of closures, the Financial Times reports. The team working on the initiative has identified 1,000 plants in developing countries that would be eligible for the program under its methodology.
Rob and Jesse go deep on the electricity machine.
Last week, more than 50 million people across mainland Spain and Portugal suffered a blackout that lasted more than 10 hours and shuttered stores, halted trains, and dealt more than $1 billion in economic damage. At least eight deaths have been attributed to the power outage.
Almost immediately, some commentators blamed the blackout on the large share of renewables on the Iberian peninsula’s power grid. Are they right? How does the number of big, heavy, spinning objects on the grid affect grid operators’ ability to keep the lights on?
On this week’s episode of Shift Key, Jesse and Rob dive into what may have caused the Iberian blackout — as well as how grid operators manage supply and demand, voltage and frequency, and renewables and thermal resources, and operate the continent-spanning machine that is the power grid. Shift Key is hosted by Robinson Meyer, the founding executive editor of Heatmap, and Jesse Jenkins, a professor of energy systems engineering at Princeton University.
Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, or wherever you get your podcasts.
You can also add the show’s RSS feed to your podcast app to follow us directly.
Here is an excerpt from our conversation:
Robinson Meyer: So a number of people started saying, oh, this was actually caused because there wasn’t enough inertia on the grid — that Spain kind of flew too close to the sun, let’s say, and had too many instantaneous resources that are metered by inverters and not by these large mechanical generators attached to its grid. Some issue happened and it wasn’t able to maintain the frequency of its grid as needed. How likely do you think that is?
Jesse Jenkins: So I don’t think it’s plausible as the precipitating event, the initial thing that started to drive the grid towards collapse. I would say it did contribute once the Iberian grid disconnected from France.
So let me break that down: When Spain and Portugal are connected to the rest of the continental European grid, there’s an enormous amount of inertia in that system because it doesn’t actually matter what’s going on just in Spain. They’re connected to this continen- scale grid, and so as the frequency drops there, it drops a little bit in France, and it drops a little bit in Latvia and all the generators across Europe are contributing to that balance. So there was a surplus of inertia across Europe at the time.
Once the system in Iberia disconnected from France, though, now it’s operating on its own as an actual island, and there it has very little inertia because the system operator only scheduled a couple thousand megawatts of conventional thermal units of gas power plants and nuclear. And so it had a very high penetration on the peninsula of non-inertia-based resources like solar and wind. And so whatever is happening up to that point, once the grid disconnected, it certainly lacked enough inertia to recover at that point from the kind of cascading events. But it doesn’t seem like a lack of inertia contributed to the initial precipitating event.
Something — we don’t know what yet — caused two generators to simultaneously disconnect. And we know that we’ve observed oscillation in the frequency, meaning something happened to disturb the frequency in Spain before all this happened. And we don’t know exactly what that disturbance was.
There could have been a lot of different things. It could have been a sudden surge of wind or solar generation. That’s possible. It could have been something going wrong with the control system that manages the automatic response to changes in frequency — they were measuring the wrong thing, and they started to speed up or slow down, or something went wrong. That happened in the past, in the case of a generator in Florida that turned on and tried to synchronize with the grid and got its controls wrong, and that causes caused oscillations of the frequency that propagated all through the Eastern Interconnection — as far away as North Dakota, which is like 2,000 miles away, you know? So these things happen. Sometimes thermal generators screw up.
Music for Shift Key is by Adam Kromelow.