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It’s been just over a week since one of the 350-foot-long blades of a wind turbine off the Massachusetts coast unexpectedly broke off, sending hunks of fiberglass and foam into the waters below. As of Wednesday morning, cleanup crews were still actively removing debris from the water and beaches and working to locate additional pieces of the blade.
The blade failure quickly became a crisis for residents of Nantucket, where debris soon began washing up on the island’s busy beaches. It is also a PR nightmare for the nascent U.S. offshore wind industry, which is already on the defensive against community opposition and rampant misinformation about its environmental risks and benefits.
The broken turbine is part of Vineyard Wind 1, which is being developed by Avangrid and Copenhagen Infrastructure Partners. The project was still under construction when the breakage occurred, but it was already the largest operating offshore wind farm in the US, with ten turbines sending power to the New England Grid as of June. The plan is to bring another 52 online, which will produce enough electricity to power more than 400,000 homes. Now both installation and power generation have been paused while federal investigators look into the incident.
There’s still a lot we don’t know about why this happened, what the health and safety risks are, and what it means for this promising clean energy solution going forward. But here’s everything we’ve learned so far.

Vineyard Wind
On the evening of Saturday, July 13, Vineyard Wind received an alert that there was a problem with one of its turbines. The equipment contains a “delicate sensoring system,” CEO Klaus Moeller told the Nantucket Select Board during a public meeting last week. Though he did not describe what the alert said, he added that “one of the blades was broken and folded over.” Later at the meeting, a spokesperson for GE Vernova, which manufactured and installed the turbines, said that “blade vibrations” had been detected. About a third of the blade, or roughly 120 feet, fell into the water.
Two days later, Vineyard Wind contacted the town manager in Nantucket to explain that modeling showed the potential for debris from the blade to travel toward the island. Sure enough, fiberglass shards and other scraps began washing up on shore the next day, and all beaches on the island’s south shore were quickly closed to the public.
On Thursday morning, another large portion of the damaged blade detached and fell into the ocean. Monitoring and recovery crews continued to find debris throughout the area over the weekend. The beaches have since reopened, but visitors have been advised to wear shoes and leave their pets at home as cleanup continues.
During GE’s second quarter earnings call on July 24, GE Vernova CEO Scott Strazik and Vice President of Investor Relations Michael Lapides said the company had identified a “material deviation” as the cause of the accident, and that the company is continuing to work on a "root cause analysis" to get to the bottom of how said deviation happened in the first place.
The turbine was one of GE’s Haliade-X 13-megawatt turbines, which are manufactured in Gaspé, Canada, and it was still undergoing post-installation testing by GE when the failure occurred — that is, it was not among those sending power to the New England grid. This was actually the second issue the company has had at this particular turbine site. One of the original blades destined for the site was damaged during the installation process, and the one that broke last week was a replacement, Craig Gilvard, Vineyard Wind’s communications director, told the New Bedford Light.
By Vineyard Wind’s account at the meeting last week, the accident triggered an automatic shut down of the system and activated the company’s emergency response plan, which included immediately notifying the U.S. Coast Guard, the federal Bureau of Safety and Environmental Enforcement, and regional emergency response committees.
Moeller, the CEO, said during the meeting that the company worked with the Coast Guard to immediately establish a 500 meter “safety zone” around the turbine and to send out notices to mariners. According to the Coast Guard’s notice log, however, the safety zone went into effect three days later. In response to my questions, the Coast Guard confirmed that the zone was established around 8pm that night and announced to mariners over radio broadcast.
Two days after the turbine broke, on Monday, Vineyard Wind contacted the National Oceanic and Atmospheric Administration for aid in modeling where the turbine debris would travel in the water. The agency estimated pieces would likely make landfall in Nantucket that day. Vineyard Wind put out a press release about the accident and subsequently contacted the Nantucket town manager. At the Nantucket Select Board meeting last week, Moeller said the company followed regulatory protocols but that there was “really no excuse” for how long it took to inform the public, and said, “we want to move much quicker and make sure that we learn from this.”
The Interior Department’s Bureau of Safety and Environmental Enforcement has ordered the company to cease all power production and installation activities until it can determine whether this was an isolated incident or affects other turbines.
By Tuesday, Vineyard Wind said it had deployed two small teams to Nantucket in addition to hiring a local contractor to remove debris on the island. The company later said it would “increase its local team to more than 50 employees and contractors dedicated to beach clean-up and debris recovery efforts.”
GE Vernova is responsible for recovering offshore debris and has not published any public statements about the effort. In response to a list of questions, a GE Vernova spokesperson said, “We continue to work around the clock to enhance mitigation efforts in collaboration with Vineyard Wind and all relevant state, local and federal authorities. We are working with urgency to complete our root cause analysis of this event.”
There have been no reported injuries as a result of the accident.
Vineyard Wind and GE Vernova have stressed that the debris are “not toxic.” At the Select Board meeting, GE’s executive fleet engineering director Renjith Viripullan said that the blade is made of fiberglass, foam, and balsa wood. It is bonded together using a “bond paste,” he said, and likened the blade construction to that of a boat. “That's the correlation we need to think about,” he said.
One of the board members asked if there was any risk of PFAS contamination as a result of the accident. Viripullan said he would need to “take that question back” and follow up with the answer later. (This was one of the questions I asked GE, but the company did not respond to it.)
That being said, the debris poses some dangers. Photos of cleanup crews posted to the Harbormaster’s Facebook page show workers wearing white hazmat suits. Vineyard Wind said “members of the public should avoid handling debris as the fiber-glass pieces can be sharp and lead to cuts if handled without proper gloves.”
Though members of the public raised concerns at the meeting and to the press that fiberglass fragments in the ocean threaten marine life and public health, it is not yet clear how serious the risks are, and several efforts are underway to further assess them. Vineyard Wind is developing a water quality testing plan for the island and setting up a process for people to file claims. GE hired a design and engineering firm to conduct an environmental assessment, which it will present at a Nantucket Select Board meeting later this week. The Massachusetts Department of Environmental Protection has requested information from the companies about the makeup of the debris to evaluate risks, and the Department of Fish and Game is monitoring for impacts to the local ecosystem.
As of last Wednesday morning, Vineyard Wind had collected “approximately 17 cubic yards of debris, enough to fill more than six truckloads, and several larger pieces that washed ashore.” It is not yet known what fraction of the turbine that fell off has been recovered. Vineyard Wind did not respond to a request for the latest numbers in time for publication, but I’ll update this piece if I get a response.
Yes. In May, a blade on the same model of turbine, the GE Haliade-X, sustained damage at a wind farm being installed off the coast of England called Dogger Bank. At the Nantucket Select Board meeting, a spokesperson for GE said the Dogger Bank incident was “an installation issue specific to the installation of that blade” and that “we don’t think there’s a connection between that installation issue and what we saw here.” Executives emphasized this point during the earnings call and chalked up the Dogger Bank incident to “an installation error out at sea.”
Several blades have also broken off another GE turbine model dubbed the Cypress at wind farms in Germany and Sweden. After the most recent incident in Germany last October, the company used similar language, telling reporters that it was working to “determine the root cause.”
A “company source with knowledge of the investigations” into the various incidents recently told CNN that “there were different root causes for the damage, including transportation, handling, and manufacturing deviations.”
GE Vernova’s stock price fell nearly 10% last Wednesday.
The backlash was swift. Nantucket residents immediately wrote to Nantucket’s Select Board to ask the town to stop the construction of any additional offshore wind turbines. “I know it's not oil, but it's sharp and maybe toxic in other ways,” Select Board member Dawn Holgate told company executives at the meeting last week. “We're also facing an exponential risk if this were to continue because many more windmills are planned to be built out there and there's been a lot of concern about that throughout the community.”
The Select Board plans to meet in private on Tuesday night to discuss “potential litigation by the town against Vineyard Wind relative to recovery costs.”
“We expect Vineyard Wind will be responsible for all costs and associated remediation efforts incurred by the town in response to the incident,” Elizabeth Gibson, the Nantucket town manager said during the meeting last week.
The Aquinnah Wampanoag tribe is also calling for a moratorium on offshore wind development and raised concerns about the presence of fiberglass fragments in the water.
On social media, anti-wind groups throughout the northeast took up the story as evidence that offshore wind is “not green, not clean.” Republican state representatives in Massachusetts cited the incident as a reason for opposing legislation to expedite clean energy permitting last week. Fox News sought comment from internet personality and founder of Barstool Sports David Portnoy, who owns a home on Nantucket and said the island had been “ruined by negligence.” The Texas Public Policy Foundation, a nonprofit funded by oil companies and which is backing a lawsuit against Vineyard Wind, cited the incident as evidence that the project is harming local fishermen. The First Circuit Court of Appeals is set to hear oral arguments on the case this Thursday.
Meanwhile, environmental groups supportive of offshore wind tried to do damage control for the industry. “Now we must all work to ensure that the failure of a single turbine blade does not adversely impact the emergence of offshore wind as a critical solution for reducing dependence on fossil fuels and addressing the climate crisis,” the Sierra Club’s senior advisor for offshore wind, Nancy Pyne, wrote in a statement. “Wind power is one of the safest forms of energy generation.”
This story was last updated July 24 at 3:15 p.m. The current version contains new information and corrects the location where the turbine blades are produced. With assistance from Jael Holzman.
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Advanced nuclear will take a decade or more to hit commercial scale. Meanwhile, the hyperscalers need power now. Enter the uprate.
When America’s tech titans started plowing money into nuclear technology to power data centers in 2024, companies such as Google and Amazon opted to invest first in next-generation reactor startups. But electricity demand is soaring today, and those projects are still years away — at least — from generating power at reasonable commercial rates.
So the industry is hedging by betting on existing nuclear plants to pump out more electricity in the near term. Uprates — renovations that allow nuclear operators to produce more power from existing reactors — are all the rage this year.
In February, the Department of Energy issued its largest-ever loan to Southern Company to fund up to 6 gigawatts of uprates across the utility’s nuclear fleet. Last week, Amazon signed a deal with Constellation Energy, the nation’s largest operator of nuclear reactors, to uprate the Calvert Cliffs plant in Maryland to generate another 190 megawatts on top of its current 1.8-gigawatt output. Soon after, the Energy Department offered nuclear operator Vistra a $4 billion loan to uprate plants in Ohio and Pennsylvania.
Then on Tuesday, Google inked its own deal with Constellation aimed at wringing out 890 megawatts of new power from 11 reactors across PJM Interconnection, the nation’s second-biggest and arguably most overworked grid system.
“Everyone loves nuclear, but it takes a really long time to build,” Raiford Smith, Google’s head of power and energy for the cloud, told me yesterday. “The fastest way to get it is via uprates. It’s real megawatts, but the quicker, shorter-term approach.”
Building new reactors, he said, “is the intermediate term plan, and we see fusion as the longer term bet.” Given that “new data centers are coming on at a gigawatt a clip, that means even with all the uprates, there’s still more to come,” he added.
The investments into existing nuclear stations deliver a win for Constellation, whose chief executive, Joe Dominguez, has been among the more vocal C-suite skeptics of what my colleague Matthew Zeitlin described as utility executives’ “load growth mania” over the past two years. But the deals say as much about the shifting lines in the debate over how to expand the nuclear power fleet in this country — what size reactors are better, how to finance projects — as the disagreement over how much new generation is needed to supply the artificial intelligence boom.
The deal “is a win-win,” Emmet Penney, the director of energy and infrastructure at the think tank Foundation for American Innovation, told me. “Constellation and Google are revealing just how essential our nuclear fleet is to maintaining our energy dominance.”
America’s last attempt at a nuclear buildout ended in a series of financial boondoggles. The problems traced back to numerous factors: Decades without any nuclear construction atrophied the workforce. Electricity market reforms aimed at breaking up monopoly utilities left the industry with few players equipped with large enough balance sheets to take on megaprojects that would take years to build and billions of dollars of upfront capital. Increased competition from cheap natural gas.
The only two new reactors that made it over the finish line, Southern’s pair of Westinghouse AP1000s at the Alvin W. Vogtle Generating Station in eastern Georgia, came in billions of dollars over budget, in part because the developers erred in choosing a Nuclear Regulatory Commission licensing pathway that required long stops and costly delays every time the builders tweaked the design. Since those were the first AP1000s constructed in the U.S., there were plenty of last-minute design kinks to iron out.
In the meantime, the industry rallied behind the idea of small modular reactors. By making individual reactors roughly a third or less powerful than large-scale units such as the AP1000, the thinking went, developers would need to buy more, helping the technology slide down the cost curve through repeated construction and assembly-line manufacturing of components.
While Google and Amazon both backed fourth-generation startups whose designs use coolants other than water, such as liquid sodium or helium gas, the only such reactor operating in the world is in China, and America’s track record of running similar plants is poor. As such, government-owned utilities such as Canada’s Ontario Power Generation and America’s Tennessee Valley Authority have thrown their weight behind third-generation SMRs that essentially just shrink down existing water-cooled technology. The first of GE Vernova Hitachi Nuclear Energy’s BWRX-300s, a 300-megawatt design based on the boiling water reactors that make up about a third of the U.S. fleet, is now underway at OPG’s Darlington plant. In the U.S., meanwhile, the NRC just issued a construction license for the TVA’s first BRWX-300.
But the completion of the second AP1000 at Plant Vogtle demonstrated an uncomfortable reality proposed by researchers at the Massachusetts Institute of Technology: That the next, cheapest reactor to build in the U.S. would be another of Westinghouse’s flagship design. Vogtle Unit 4 came online in 2024 roughly 30% cheaper and faster than its slightly older twin, Vogtle Unit 3.
If that reduction seemed to justify the approach SMR companies were pursuing, a report by an economist and former antinuclear researcher raises new questions. The study by Charles Komanoff, which I covered here last month, suggests that the number of reactors required to achieve major cost reduction through “economies of duplication” pales in comparison to the price drop achieved through “economies of scale.” In other words, the nuclear industry’s time-tested approach to making reactors more economical — making them bigger — is still the best bet.
The Trump administration certainly agrees. The Energy Department laid plans for at least 10 new AP1000s last year, and put up another nearly $20 billion loan package for utilities that form joint ventures with Westinghouse to build one of the 1,100-megawatt reactors. South Korea is currently working out the fine print on a deal to help finance and build as many as six AP1000s and two APR1400s, the Korean rival to the Westinghouse reactor.
Whether any American utilities step up to help build any of those AP1000s remains an open question.
“There’s no way any utilities could consider building a large AP1000 because doing so could bankrupt the whole operation, and they don’t have enough confidence,” Chris Gadomski, the lead nuclear analyst at the consultancy BloombergNEF, told me.
The workforce that constructed the two AP1000s at Vogtle, he said, are now out building data centers. Unlike the Chinese, whose state-owned nuclear companies reverse engineered the AP1000 and made it relatively cheap to build by constructing as many as half a dozen at a time at one location, “we don’t have the wherewithal or sites in this country to build six reactors at once,” Gadomski said. “You’re lucky to build two at one site in this country.”
So fusion and next-generation fission remain years away. Current-generation SMRs come with big questions. And the leading large-scale design, the AP1000, is proving a hard sell to utilities. That leaves two options: Restarting decommissioned plants and uprating current reactors. The Energy Department has pumped billions in loans into projects to restart at least three permanently closed reactors: Holtec’s Palisades plant in Michigan, NextEra’s Duane Arnold facility in Iowa, and Constellation’s Crane Clean Energy Center, née Three Mile Island, in Pennsylvania. The consensus among industry experts is that those are the only three that remain intact enough to start back up; every other shuttered plant is at too advanced a stage of demolition.
That leaves uprates.
There are limits to how much power can be drawn from existing plants, said Jeff Jenkins, the founder and managing partner of Bernhard Capital Partners, an investment firm whose portfolio includes Allied Power, a contractor that has worked with Constellation on past uprates. “There’s still a few gigawatts out there,” he said. “And a gigawatt is a lot.”
But ultimately, the U.S. nuclear buildout needs options.
“It’s very much a hedge,” Gadomski said. “They’re spreading their bets. That’s a strength of Google’s strategy. They’re willing to place bets on advanced reactors, fusion, and still try to double down on the capacity of existing plants.”
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.”