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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.
What happened?
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.
Why did the blade break?
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.
How did Vineyard Wind respond?
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.”
Did anyone get hurt?
There have been no reported injuries as a result of the accident.
What are the risks now?
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.
How is the cleanup going?
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.
Has anything like this happened before?
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.”
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.
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.
As the cost to charge the Rivian R1S ticked up over $50, then $60, I couldn’t help but recall those “Pain at the Pump” segments from the local news. Perhaps you’ve seen the familiar clips where reporters camp out at the local filling station to interview locals fed up with high gas prices. I watched the Rivian charger’s touchscreen as the cost to refuel my weekend test-driver ballooned and imagined the chemically dewrinkled TV anchors doing their first story on “Pain at the Plug.”
I should have been ready for this. Back in the 90s, I remember the shock of filling my parents’ gas-guzzling Ford Explorer, which cost two or three times as much as it took to fill my dinky Escort hatchback. The story isn’t the same in the age of electric vehicles, but it rhymes. It rarely costs more than $20 to top off the small battery in my Tesla Model 3, so my eyes popped a little at the price of refueling a massive EV.
This isn’t a one-to-one comparison, of course: the R1S also goes farther on a charge because of how much energy its huge battery can store, so it’s a bit like comparing a compact car to a Ford F-150 and its 36-gallon gas tank — you’re spending much, much, more, but you’re going a little farther, too. Still, it is a reminder that size matters, whether you’re talking about gas or electric. Under a Trump administration where electricity prices are forecasted to spike, EV shoppers might find themselves thinking the way Americans often have during oil crises and gas price hikes: taking a long look at smaller and lighter vehicles to save money.
The EV weight problem is well-known. To summarize: EVs tend to be weighty because of their massive battery packs. Making electrified versions of the big trucks and SUVs Americans love amplifies the problem. You need very big batteries to store enough energy to give them a decent range, and adding a large lithium-ion unit along the bottom adds even more girth.
Weighty EVs have raised concerns over public safety, since they could be more dangerous to pedestrians, cyclists, and other cars during collisions. Their bulk leads to prematurely worn-out tires, which potentially creates more tire dust and forces drivers to replace their rubber sooner. Bigger batteries need larger amounts of rare metals to make them. And now, in a world of expensive electricity, a heavy EV could hammer a driver’s wallet.
Those of us raised on miles per gallon must learn a new statistical vocabulary to think about the efficiency of EVs. The simplest stat is the number of miles traveled per kilowatt-hour of energy. Lucid, the luxury EV-only startup, has been gunning for the efficiency title with its streamlined Air sedan and has bragged about making 5 miles per kilowatt-hour. By comparison, the current Tesla Model 3 makes around 4 miles per kilowatt-hour, while a big, heavy Rivian gets somewhere in the 2s. (Using a conversion formula from the Environmental Protection Agency to calculate the energy present in a gallon of gas shows that a relatively efficient sedan like the Honda Civic scores around 1, by Lucid’s math, and a big pickup truck even worse.)
These numbers are context-dependent, of course. Just as a gas car or hybrid is judged by its city, highway, and combined mileage, an electric car goes much farther at slow speeds than it does on the highway. A big three-row Hyundai Ioniq 9 EV that can deliver 3 miles or more per kilowatt-hour at slower speeds made right around 2.0 when I sped down Interstate 5, the AC blasting to keep the baby comfortable on a hot California day. The Supercharger bill was enough to make me miss my little Tesla.
The dollars-and-cents calculation is a little different with all-electric vehicles than it was in the all-gasoline era. Drive a gas car and you pay whatever the gas station charges; there is little recourse beyond knowing which service station in your city is the cheapest. With EVs, however, most drivers do their charging primarily at home, where the cost per kilowatt-hour for residential energy is much lower than the inflated cost to refill the battery at a public fast-charger. (Even California’s high cost for home electricity amounts to just half of what some EV fast-chargers cost during afternoon and evening times of peak demand.) But there’s no way to beat the system entirely. Drive a giant, electron-guzzling EV and you’ll be much more vulnerable to a spike in electricity prices.
And it’s not just the cost of recharging a battery — size also matters a lot for the up-front cost of the EV. Americans have become accustomed to paying a premium for larger vehicles, but for combustion cars, this is simply a market phenomenon. It doesn’t cost that much more to build a crossover instead of a sedan, or to give a vehicle a bigger gas tank. The car companies know you’ll pay thousands more for a Toyota RAV4 than for a Corolla. With electric vehicles, however, you’re paying for size in a much more direct fashion. That huge battery needed to move a Rivian is simply much more expensive to build than the one in a Chevy Bolt.
Carmakers are now confronting this problem as they try to crack the affordable EV problem. A subtle detail in Ford’s big announcement last week that it would build a $30,000 mid-size electric pickup is that the vehicle would have a battery perhaps half as big as the one in the F-150 Lightning EV and four times smaller than the biggest one you can get with Chevy’s Silverado EV.
Building a truck with a relatively small battery will undoubtedly slash costs compared to the monster units we’ve seen in full-size electric pickups. It also means that Ford will have to be especially conscious of the vehicle’s weight to maximize the range that can be squeezed out of those few kilowatt-hours. Until battery production costs tumble, that is the way to the more-affordable EV — do more with less.
Current conditions: Hurricane Erin is lashing Virginia Beach with winds up to 80 miles per hour, the Mid-Atlantic with light rain, and New York City with deadly riptides • Europe’s wildfires have now burned more land than any blazes in two decades • Catastrophic floods have killed more than 300 in Pakistan and at least 50 in Indian-administered Kashmir.
THE TOP FIVE
1. Trump schedules auctions of dozens of offshore oil and gas leases
Offshore oil rigs in California. Mario Tama/Getty Images
Two weeks after de-designating millions of acres of federal waters to offshore wind development, the Trump administration Tuesday set a new schedule for auctions of oil-and-gas leases in the Gulf of Mexico and Alaska’s Cook Inlet, stretching all the way out to 2040. In a press release, Secretary of the Interior Doug Burgum cited the recently passed One Big Beautiful Bill Act as a “landmark step toward unleashing America’s energy potential” by “putting in place a bold, long-term program that strengthens American Energy Dominance, creates good-paying jobs and ensure we continue to responsibly develop our offshore resources.”
The lease plan may violate federal law, however, as the administration has not conducted environmental analyses or held public hearings before putting the auctions on the calendar. “There’s no world in which we will allow the Trump Administration to hold dozens of oil sales in public waters, putting Americans, wildlife, and the planet in harm’s way, without abiding by the law,” Brettny Hardy, an oceans attorney at the environmental group Earthjustice, said in a statement. “Even with its passage of the worst environmental bill in U.S. history, the Republican-led Congress did not exempt these offshore oil sales from needing to comply with our nation’s environmental statutes.”
2. COP30 president braces for contentious climate talks
In an open letter published Tuesday, André Corrêa do Lago, the veteran Brazilian diplomat leading the next United Nations climate summit, warned that “geopolitical and economic obstacles are raising new challenges to international cooperation — including under the climate regime.” The letter comes after UN-sponsored talks over a plastics treaty collapsed last week, with the U.S. joining fellow oil producers Russia, Saudi Arabia, and Iran in standing athwart more than 100 other countries that supported a deal to curb production of new disposable plastics.
The climate summit, known as COP30, is set to take place in the Brazilian Amazon city of Belém in November. It will be the first global climate confab since President Donald Trump returned to office and, on his first day back in the White House, kicked off the process to withdraw the U.S. from the 2015 Paris climate deal.
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3. A coal mega-merger collapses
Peabody Energy backed out of its $3.8 billion agreement to buy Anglo American’s coal mines following the unexpected closure of the deal’s flagship mine. On Tuesday, the largest U.S. coal producer said that an explosion last March at Anglo America’s Moranbah North mine in Australia resulted in a “material adverse change” to its deal. The move dealt a major blow to London-based Anglo American, which had planned to use the sale as part of a broader restructuring to fend off a hostile takeover attempt by rival BHP. Anglo American CEO Duncan Wanblad said he was “very disappointed,” according to the Financial Times, and the company said it would “seek damages for the wrongful termination.”
The deal comes amid a global comeback for the main fuel blamed for climate change. As my colleague Matthew Zeitlin wrote last month, “the evidence for coal’s stubborn persistence globally has been mounting for years. In 2021, the International Energy Agency forecast that by 2024, annual coal demand would hit an all-time high of just over 8,000 megatons. In 2024, it reported that coal demand in 2023 was already at 8,690 megatons, a new record; it also pushed out its prediction for a demand plateau to 2027, at which point it predicted annual demand would be 8,870 megatons.”
4. ChemFinity raises $7 million to recycle critical minerals
The California startup ChemFinity got a big boost on Tuesday, raising $7 million in a funding round led by At One Ventures and Overton Ventures. The company, spun out from the University of California, Berkeley, claims its critical mineral recovery system will be three times cheaper, 99% cleaner and 10 times faster than existing approaches currently found in the mining and recycling industries. “We basically act like a black box where recyclers or scrap yards or even other refiners can send their feedstock to us,” Adam Uliana, ChemFinity’s co-founder and CEO, told Heatmap’s Katie Brigham. “We act like a black box that spits out pure metal.”
5. NYC airport workers protest over a lack of heat protections
At a time when record heat is regularly halting flights on sweltering tarmacs, service workers at New York City’s LaGuardia and John F. Kennedy airports are slated to protest on Wednesday to demand new workplace protections from extreme heat. The workers, many of whom handle cargo and ramp services for major airlines, said in a press release that extreme heat and lack of access to water, rest breaks, and proper training threatened more incidents of heat illness. One worker claimed to have recently lost consciousness inside the cargo hold of a plane due to heat. The members of chapter 32BJ of the Service Employees International Union will be joined by State Assemblymembers Steven Raga and Catalina Cruz in their demonstration, which is scheduled to begin at 10 a.m. near LaGuardia’s Old Marine Terminal.
THE KICKER
I swear by the shvitz. My great grandfather, after whom I’m named, went to the same Russian bathhouse in Manhattan that my cousin, brother, and I visit regularly to enjoy the sauna and cold plunge. Turns out amphibians feel the same. A researcher at Macquarie University in Sydney found that frogs could fight off the deadly chytrid fungal infection plaguing the green and golden bell frog by sitting in “frog saunas.” Spending a few hours a day in warm enclosures that reach temperatures higher than 83 degrees Fahrenheit for a week or less is all that’s needed to kill off the fungus.
So far on Shift Key Summer School we’ve covered how electricity gets made and how it gets sold. But none of that matters without the grid, which is how that electricity gets to you, the consumer. Who actually keeps the grid running? And what decisions did they make an hour ago, a day ago, a week ago, five years ago to make sure that it would still be running right this second?
This week on Shift Key, Rob and Jesse chat with Mark Rothleder, senior vice president and chief operating officer of the California Independent System Operator, which manages about 80% of the state’s electricity flow. As the longest-serving employee at CAISO , he’s full of institutional knowledge. How does he manage the resource mix throughout the day? What happens in a blackout? And how do you pronounce CAISO in the first place?
Shift Key is hosted by Jesse Jenkins, a professor of energy systems engineering at Princeton University, and Robinson Meyer, Heatmap’s executive editor.
You can also add the show’s RSS feed to your podcast app to follow us directly.
Here is an excerpt from our conversation:
Jesse Jenkins: To make this a little bit more concrete, walk through how you’re orchestrating the generation fleet. What is the typical mix of resources that you’re calling on at different times of day, on a typical California day. Let’s start at 8:00 a.m. and, you know, move through the day.
Mark Rothleder: So if it’s like today, it’s a moderate summer day, there would be in the. There would be some thermal resources, gas resources that would already be on, probably near their minimum load, which is probably about 30%, 40% of their full operating capability. And they would be sitting there waiting for dispatch instructions as the load increased.
And I talk about the morning because people start turning lights on. This is when the load starts to increase, in that morning hour. So to balance the system as that load increases relatively quickly, you’re going to have a combination of probably solar starting to come up and produce, naturally, because the sun is coming out. You may have a little bit of wind production starting to increase because the wind’s starting to blow because the temperatures and the system are driving that wind. If that’s not enough energy, we’re dispatching probably thermal resources, probably doing some exchanges through the Western Energy Imbalance Market with the neighbors.
And then you get to about probably 9 o’clock, 10 o’clock ,and things stabilize. And then what ends up happening, at least in our system, is you start to see solar production continue to go up, but the load is not increasing. It’s kind of flattened out. We start to probably see some backing off of thermal resources that were brought up during that morning load pull. And now we’re starting to back off on those, and maybe even getting to the point where surplus energy in the middle of the day — we’re exchanging and maybe exporting some of our energy to our neighbors because we have surplus. We’re probably starting to see batteries charge up in the middle of the day because now we’ve got this cheap energy. And this is going to probably go on until about 4 o’clock, 5 o’clock in the afternoon, when the traditional peak of the day is, and this is when the highest gross load is.
And then we start to see another dynamic happen, and that is, at least in our system, the sun starts to set and then the solar production starts to decrease. What’s interesting about that is, as the solar production decreases, it happens over about a three-, four-hour period, and it’s a relatively fast ramp out of those solar resources. The load is not dropping. And in fact, if you think about —
Jenkins: It’s rising often, right?
Rothleder: It’s actually still rising because some of the load that was previously served by behind the meter rooftop solar, that load is also coming back on the system because the solar production is decreasing. So again, to rebalance the system and keep that balanced and straight, we have to start ramping up a couple things. We start to turn, maybe, what was exports around, and we start importing energy from our neighbors. We start discharging the batteries that we just charged up earlier. And to the extent we still need other energy, we probably have a combination of thermal gas resources that we’re bringing them off their minimum load, dispatching them up during the day, and probably some hydro resources that are able to be dispatched during the day.
Between 6 p.m. and 7 p.m. we hit what we call our net peak. We call it net peak because it’s the gross load minus wind and solar production. And that tends to be the most critical time when we need — since the ramp out of wind and solar, more solar, that kind of is the highest where we need other resources to be available and dispatched. And so once we get through that net peak, come around 6:30, 7 o’clock, things just start to gradually turn around. And then we’re ramping out over the rest of the day the thermal resources, the interchange, and the hydro resources that we previously dispatched up to get to that net peak. And this all starts over again the next morning.
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Offshore oil rigs in California. Mario Tama/Getty Images
