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I can’t quite believe it: Today is the one-year anniversary of Heatmap. And what a year it’s been.
When I left my old job as editor of The Week, climate change had a reputation among journalists as being the one scary subject that nobody wanted to read. It was too depressing, too technical, too boring to sustain dedicated coverage. That misperception is finally ending — and I like to think Heatmap put some nails in the coffin.
Heatmap’s mission is to tell the inside story of the race to fix the planet. We think this is the most important and interesting issue of our time, so we strive to make Heatmap punchy and personable as well as informative and trustworthy. It’s why you’ll find that Heatmap’s writers follow the facts where they lead and tell you — in hopefully engaging, elevated ways — what they see and hear.
Heatmap is also a bet that readers want to go deep into the nuances and tradeoffs at the heart of the energy transition. We love works in progress — how policymakers are thinking about a particularly thorny problem, how a geothermal company is trying to bring down costs fast, why a community is skeptical of a wind farm. It can be upsetting. It can be inspiring. We hope it’s always fascinating and helpful. After all, this is how the planet gets fixed.
But I’m preaching to the choir. If you’re reading this note, you are probably shaping the future of the planet yourself, whether through your work or the choices you make at home or both. I hope we’ve helped you understand what’s actually happening and make more informed decisions.
Over the next few weeks, you’ll be hearing from our writers about some of their favorite stories to get a behind-the-scenes look at the process behind them.
I hope you’ll also consider supporting our work if you haven’t already. Paid subscribers get full access to our two daily newsletters, our weekly podcast, and all the original reporting we publish on the site every day. They also receive the unending gratitude of our newsroom. (As a party favor for our birthday, you can also get 20% off an annual subscription with the code ANNIVERSARY.)
We know there are other outlets covering climate and energy, and we don’t take your trust or interest for granted. Thank you for your continued support.
Nico Lauricella
Founder and editor in chief
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On methane rules, British wind, and the Israeli electricity market
Current conditions: Singapore’s air is the worst in the world as wildfire smoke from Indonesia chokes the city state and neighboring Malaysia • Following a summer-like heat wave, temperatures in the American West are set to drop by as much as 50 degrees Fahrenheit as a cold snap moves in • In the Gulf of Mexico, Tropical Storm Isaias officially strengthened into the first Atlantic hurricane of the season this morning.
With its offshore oil fields booming in Guyana and its opportunities opening in Venezuela, Exxon Mobil is eyeing the next location for the Americas’ oil and gas: Trinidad and Tobago. In an interview with the Financial Times this week, the company’s exploration chief said the island nation’s existing oil and gas industry could expand to tap the same basin east of Venezuela that has transformed Guyana from one of the hemisphere’s poorest nations to one of its richest in terms of per capita gross domestic product. “A lot of people ask, ‘well, where’s the next Guyana?’” John Ardill, Exxon Mobil’s vice-president and head of global exploration, told the newspaper. “In Trinidad, we moved in as a play extension to Guyana.” The agreement between Exxon Mobil and the Trinidadian government took “about half as long as it usually takes on a good day,” delivering a pact in “record time.”
America’s oil majors are also looking outside the hemisphere. As you may recall from August, I told you that Exxon Mobil was also considering a big investment in Africa, with Mozambique drawing particular attention. Brazil’s state-owned Petrobras, meanwhile, is expanding its own grasp on the Americas’ oil boom. On Wednesday, Upstream reported, the company bid $590 million for control of an ultra-deepwater concession.
The European Union is pausing implementation of its new rules requiring oil and gas exporters to more scrupulously track data on methane emissions. The U.S., on the other hand, is planning a straight-up rollback. At an oil industry conference in Santa Fe on Wednesday, Environmental Protection Agency Administrator Lee Zeldin teased out plans to gut core parts of the methane regulations finalized in 2024. “This proposal takes on many of the problems American producers and operators have raised with us,” Zeldin said, according to Argus Media. “That includes the burden on marginal wells and oil and gas operators in general, the super emitter program, associated gas and control device requirements.”
Record wind power generation may have slashed how much natural gas Britain needed to burn last month for electricity, but it “wasn’t enough to shield the country from surging prices triggered by the war in Iran,” Bloomberg reported. Wind turbines pumped out 6.6 terawatt-hours of electricity in September, a record for the month and 4% more than a year earlier. As a result, gas-fired generation plunged to its lowest level on record for that month. But day-ahead power rates still doubled from a year earlier.
The world’s capacity of floating offshore wind, the subset of the sector that could vastly expand the areas of shoreline dotted with turbines, has reached 382 megawatts, a 38% surge over the past 12 months, according to a Renewables Now writeup of the latest report from the trade group RenewableUK. Meanwhile, Poland has now constructed all 76 of the standard turbines built into the seabed of the Baltic Sea for its first offshore wind farm. One-third of the turbines are now generating power, according to offshoreWIND.biz.
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South Korea plans to speed up its shift away from fossil fuels with a new goal of 100 gigawatts of low-carbon energy additions by 2030 and roughly $747 billion in government-led investment over the next decade. The plan, part of the Korean Green Transformation program, “seeks to make Korea one of the world’s top three green manufacturing powers by developing industries such as hydrogen-reduction steelmaking, next-generation solar cells, and all-solid-state batteries,” according to The Korea Times, an English-language daily. New nuclear reactors are also part of the strategy.
The move comes as Seoul advances construction of as many as eight nuclear reactors in the U.S., including six of America’s Westinghouse AP1000 and two of its own APR1400s, as I told you last week.
The utility megamerger of the century so far is “not in the best interest of Virginians.” That’s the judgment the state’s lieutenant governor, Ghazala Hasmi, rendered this week following a five-city public listening tour. The statement came ahead of the State Corporation Commission’s first local hearing on the deal, and marks what Utility Dive called “the most formal expression of opposition from Virginia’s executive branch so far.” Governor Abigail Spanberger, a fellow Democrat, has not yet taken a definitive position on the merger.
But the deal follows some clear market logic. Among the benefits: It would create, as my colleague Matthew Zeitlin wrote in May, “a storage juggernaut.”

Israel’s booming tech sector and soaring stock market are just two ways its economy has dramatically changed from the socialism that defined the early decades after the country’s founding in 1948. Now that shift also includes the electricity market. Since market reforms allowed private actors into the grid at the start of last year, more than 2 million citizens, representing more than 500,244 private and business customers, have switched from the Israel Electric Corporation to private providers, according to The Jerusalem Post. Ratepayers buying electricity from private suppliers enjoy discounted rates ranging from 7% to 20%, “thanks to the lower generation costs in the private market.” Another 23,286 households and businesses submitted requests to switch suppliers just last month. OPC Energy, an independent power provider based in Tel Aviv, raised $200 million in bond issuances in August.
The announcement follows a Series A round that included investment from the Department of Defense.
The U.S. wants to make more of its own rare-earth magnets, which are critical to everything from guided missiles to aerospace systems and electric vehicle motors. But doing so will require a domestic source of high-purity iron, the main material in these magnets and one the U.S. imports almost entirely from China. Hertha Metals is betting it can fill that gap while helping decarbonize the ironmaking process, too. After raising a more than $133 million Series A, which the company announced last week, the Texas-based startup is promising to supply domestic magnet and steel manufacturers with 10,000 metric tons per year of lower-carbon, high-purity iron. That will come from its first commercial facility near Houston, where the company broke ground on Thursday.
Steel customers, including automakers and other equipment manufacturers, have already expressed interest in Hertha’s tech. But the startup’s most important customer might be the federal government. Defense manufacturers depend on rare-earth magnets — which require 99.95% high-purity iron — for things like aerospace platforms and radar systems. That explains why the Department of Defense invested $65 million in Hertha’s Series A through its Industrial Base Analysis and Sustainment program. The investment comes in partnership with the Economic Defense Unit, a new Pentagon division established under Trump that makes grants, loans, equity investments and purchase commitments into defense and dual-use sectors like critical minerals.
Hertha’s CEO and founder Laureen Meroueh called the new facility — sited next to its operational demonstration plant — the nation’s “first domestic iron and steel innovation complex” when I spoke with her in April to learn more about the company’s technology. She expects the plant to be operational by the end of next year.
That’s thanks to a new proprietary process that Meroueh, a mechanical engineer and materials scientist by training, pioneered. “We find ourselves in the year of 2026 making steel out of the same furnace that was developed in 1850. That’s insanity,” Meroueh told me. Today, most iron is produced by stripping oxygen from ore in a furnace that operates at over 3,000 degrees Fahrenheit. Called a blast furnace, this towering steel-and-brick shaft is fueled by coke made from metallurgical coal. The resulting molten iron then enters a basic oxygen furnace, where it’s refined into steel. Producing the higher-purity iron needed for rare earth magnets requires additional refining steps to remove impurities.
While lower-emissions alternatives do exist, they come with their own limitations. Direct iron reduction, for example, uses hot gas to strip oxygen from ore, then melts the resulting solid iron in an electric arc furnace. But the process typically requires higher-grade ores to begin with, and thus remains a small share of global production. Electric arc furnaces can also recycle steel scrap — indeed most domestic steel is produced this way — but supply is finite. Meanwhile, ore quality is decreasing over time, limiting the grades of steel it can ultimately produce.
Enter Hertha, which says it can turn low-grade iron ores into high-purity iron in a single furnace. Meroueh explained that Hertha uses either natural gas or hydrogen to strip oxygen from molten ore in an electric arc furnace, with no separate reduction step beforehand. Because the furnace melts down the ore and its impurities from the outset, it can accept low-grade ore in many forms, including fines, the powdery particles left over from mining and processing. When everything is molten, the lighter impurities separate from the denser iron and form a layer of slag that operators can then drain from the furnace. The resulting iron needs only minimal additional refining to go into rare earth magnets.
“This is a continuous reactor, so you continuously feed it and semi-continuously tap out your slag and product,” Meroueh explained. Melting iron made from ore produces far more slag than standard electric arc furnaces are designed to handle, and would thus require frequent interruptions in operations. But Hertha’s proprietary process doesn’t need to do that. “This continuity in operations is what makes it economically viable for us to generate large amounts of slag while maintaining production and throughput.”
The startup also says it can make steel using the same process by adding a controlled amount of carbon to its single furnace. While Hertha hasn’t provided an estimate of avoided emissions for this plant specifically, it says a third-party modeler has projected that its subsequent 500,000-metric-ton facility will emit up to 50% less than conventional blast furnace steel production when running on natural gas, and 98% less when running on green hydrogen.
Hertha also expects its process will cut costs by 25% compared with blast furnaces, and says its system can make full-cycle steel plants as small as 500,000 metric tons per year economically viable. Most steel mills that use a blast furnace to convert raw materials into finished steel produce 3 million metric tons or more annually, making this future plant the size of a so-called “mini mill,” which recycles scrap metal in an electric arc furnace rather than starting with the iron ore.
The 10,000-metric-ton facility the company is currently building will start by running on natural gas, which is still far cheaper than green hydrogen. But Meroueh told me that once green hydrogen falls below $5 a kilogram — and ideally below $3 — she expects it will make economic sense for Hertha to start blending hydrogen with natural gas, potentially in the early 2030s.
Outside the U.S., Hertha could reach ultra-low carbon production even sooner. “So with the really attractive renewable power prices in the Middle East, it makes it a lot more digestible to produce green hydrogen,” Meroueh told me in April. “And the best use case of that green hydrogen is to make steel. Moving hydrogen around in pipelines, not attractive. Converting it to ammonia and then back to hydrogen is not very attractive. Just make the steel right there.”
Hint: It’s one that tends to align with utilities.
Building trades want to build.
This desire for more and better big projects has meant that unions representing construction workers, utility linemen, operating engineers, plumbers, pipefitters, and so on have spent past decade-plus ping-ponging between praise and exasperation toward major Democratic priorities, especially when it comes to climate and energy policy.
Now, with a permitting bill negotiated by two Democrats and two Republicans in the Senate, much of the hardhat union sector is signing on as eager supporters. If the rest of the Democratic coalition can sign on to the bill, it may go some way to repairing a breach that has been widening since the Obama administration.
The modern fight over U.S. energy infrastructure began with a Canadian pipeline project.
Building trades were some of the most fervent advocates for the Keystone XL pipeline, which would have brought oil from the tar sands of Canada’s Alberta province into the continental United States — a project that Presidents Barack Obama and Joe Biden both opposed and which the latter finally canceled in 2021.
In the interim, the first Trump administration tested these unions’ historic allegiance with Democrats as the left became more vocal on climate policy. After Senator Ed Markey and Representative Alexandria Ocasio-Cortez released their Green New Deal outline in 2019, the AFL-CIO sent the two progressives a letter saying their plan “makes promises that are not achievable or realistic.” The signatories also included the United Mine Workers, the International Brotherhood of Electrical Workers, and eight more building trades, hardhat unions and federations that would be threatened by a rapid transition to 100% renewable energy. The signatory unions represented a little under 3 million of the AFL-CIO’s then roughly 12.5 million members.
“The broad trajectory is that the building trades unions have been supportive of building pretty much anything, whether it’s fossil, whether it’s data centers, whether it’s clean energy,” Todd Tucker, director of the industrial policy and trade program at the Roosevelt Institute, told me.
Actual Democratic policymaking turned out to be more favorable to unions, with infrastructure spending, money for domestic manufacturing, prevailing wage requirements, and subsidies for nuclear power and carbon capture all spurring infrastructure work during the Biden years. North America’s Building Trades Unions described the 2021 bipartisan infrastructure law as the “single greatest infrastructure investment in our nation’s history,” while the Laborers’ International Union of North America, a.k.a. LIUNA, praised the 2022 Inflation Reduction Act for “taking a commonsense approach to our energy needs.”
Now, it’s environmental groups that are either opposed to or mum on a piece of infrastructure legislation — the Bipartisan American Affordability and Jobs Act — while most of the building trades support it.
The United Association of Journeymen and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada, otherwise known as the UA, signed the anti-Green New Deal letter and had a project labor agreement with the developer of the Keystone XL pipeline, but came out in support of the permitting deal. So did LIUNA and the International Union of Operating Engineers.
“In our industry, uncertainty means one thing: unemployment,” UA General President Mark McManus said in a statement. “It is long past time that Congress enacts meaningful permitting reform to put UA members to work faster.”
LIUNA’s president Brent Booker described BAAJA in a statement as a “monumental bipartisan permitting reform bill,” and urged “lawmakers in both parties to seize this moment, pass the Bipartisan American Affordability and Jobs Act of 2026, and finally deliver meaningful permitting reform.”
John Downey, the president of the Operating Engineers union, which signed a letter imploring the Biden-Harris transition team to maintain the Keystone pipeline’s permits, said in a statement that the union “applauds the bipartisan effort” on BAAJA, and that the “Operating Engineers look forward to working with Congress to pass this critical bipartisan bill.” Other Keystone XL supporters including the National Association of Manufacturers and the Chamber of Commerce have also come out in support of BAAJA.
There are a few industry and union players, however, that have been notably more circumspect: groups representing utilities and the International Brotherhood of Electrical Workers.
The Edison Electric Institute, the trade group for investor-owned utilities, has in the past supported overhauling the National Environmental Policy Act and Clean Water Act, which the bill would do. The group’s chief executive, Drew Maloney, told reporters after the release of the bill text that it was “encouraged” by the permitting provisions in BAAJA and was “reviewing” the transmission provisions.
The transmission provisions are largely seen as hostile to incumbent utilities. Many in Washington — especially Republicans — see them as a sign of decreasing utility clout. The bill would encourage and enable greater state and federal oversight of utilities’ infrastructure buildouts and would restrict the utilities’ “right of first refusal” on building new transmission lines. Many ratepayer advocates argue that these projects do more to build out the utility rate base than to increase grid reliability
This stance — supportive of permitting reforms, wary of grid provisions — puts utilities in a kind of mirror image with big environmental groups like the Natural Resources Defense Council, which is friendly to the transmission portions of the bill but skeptical of the permitting portions.
Senator Kevin Cramer, a North Dakota Republican and himself a former utility regulator, warned utilities to “not get carried away” in trying to push for changes to the deal, Punchbowl News reported.
“What I’m really watching these days around the Senate BAAJA bill is where does the IBEW end up,” Tucker told me.
An IBEW spokesperson told me the union is “reviewing the language and holding discussions with stakeholders across our industries. We represent workers across affected industries (utilities, transmission, construction, etc.), so the details are very important.”
The IBEW has just over 900,000 members, including construction electricians, utility linemen, technicians, and operators, with particularly strong representation within utilities. The union also has special political influence due to its large and widespread membership — anywhere there’s a power line, there’s likely one of the IBEW’s more than 800 locals.
Utility watchdogs like David Pomerantz, executive director of the Energy and Policy Institute, are not surprised to see utilities and the IBEW taking similar (non-)stances toward the bill.
He told me the IBEW is a particularly potent force on issues affecting utilities because “they’re a more acceptable face to the Democratic electorate,” referring to their lobbying in blue states and of Democratic politicians. “Among Democrats, the IBEW right now is much more palatable than the utilities.” The IBEW has been a counterweight to the Democrats’ and the public’s increasingly harsh turn against data centers, for instance, opposing moratoria in New England, the Mountain West, New York, and the Kansas City area.
The IBEW has also weighed in on more fine-grained utility policy, including right-of-first-refusal, well before the release of BAAJA. A union policy brief describes these as policies that “prioritize unionized utilities for critical projects, safeguarding labor standards and ensuring safe and efficient energy infrastructure development.” In Illinois, an IBEW local intervened in a rate case to oppose a proposed cut in the return on equity for local utility ComEd.
But the IBEW has also won project labor agreements for the type of long distance, high-voltage transmission projects that many climate and clean energy advocates hope the bill encourages.
“Some of their members work for the utilities and the utilities are getting rolled by this legislation, but some of the members work in construction and building,” Tucker told me.
The question going forward for the union, he said, is “do you align your union strategy with the current business model of your current employers? Or do you make a bet that these new jobs that are getting created and new builds are going to net out positive?”