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And it involves dumping 9,000 tons of fancy sand off the North Carolina coast.
When visitors flock to the beach this summer in Duck, North Carolina, a small, 6-mile long town on the Outer Banks, they may catch a glimpse of a climate experiment happening among the waves.
About 1,500 feet offshore, a company called Vesta will be pouring 9,000 tons of sand into the sea and watching carefully to see what happens next. This finely crushed rock will not be of the typical Outer Banks variety. Instead, it will consist of a mineral called olivine, which should enhance the ocean’s ability to absorb carbon from the atmosphere — and lock it away for thousands of years.
That the experiment can go ahead at all marks a milestone for ocean-based carbon removal, a category of climate solutions that prod the ocean into sucking up more CO2. A big obstacle for the field has been the lack of a legal framework for permitting real-world trials — U.S. laws governing the ocean weren’t written with the prospect of intentionally altering its chemistry to address an existential environmental crisis in mind. But after an 18-month interagency review process, Vesta is now the first company with a federal permit from the U.S. Army Corps of Engineers to deploy a stand-alone carbon removal test in U.S. waters.
Though 9,000 tons may sound like a lot, this is still a relatively small-scale pilot designed to assess how effective the olivine is in driving carbon removal, as well as observe any other changes in the environment and develop methods for tracking the movement of the sand in the water. These kinds of field trials are essential to establishing which marine carbon removal methods have potential and which don’t.
“We want to measure everything very carefully at this stage and make sure that we are fully understanding the safety profile and the carbon removal data from this project,” Tom Green, Vesta’s CEO, told me. But the company has big aspirations. If things go well, he said, maybe olivine could be used for beach nourishment projects all over the country, where sand is deposited along the shore to address erosion. “Imagine the carbon removal possibilities if we did that with olivine sand,” he said. “We could quickly become the largest technique for permanent carbon removal that's out there.”
Scientists generally agree that stopping global warming this century will require both reducing emissions and taking carbon out of the atmosphere. The sheer size of the ocean and its natural ability to store vast amounts of carbon make it an enticing place to look for solutions.
Dumping thousands of tons of non-native sand into the ocean may not sound like the most convincing option — especially since the ocean is already “experiencing unprecedented destabilizing changes through massive warming, acidification, deoxygenation, and a host of resulting effects,” according to an open letter published last year and signed by hundreds of scientists. However, despite this — or perhaps because of it — the letter called for accelerating research to find out whether any of the proposed ocean-based carbon removal methods, including releasing large quantities of ground olivine, are viable.
Olivine is an abundant mineral with special properties. When it comes into contact with seawater, it drives a chemical reaction that converts CO2 gas into more stable forms of carbon that can’t readily return to the atmosphere. This in turn creates a deficit of CO2 in the surface waters, which triggers the ocean to take up more from the atmosphere in order to maintain equilibrium.
Reactions like this are happening constantly in the ocean already, but on very slow timescales. Vesta’s innovation is to speed up the process by crushing and deploying olivine strategically where the wind and waves can most efficiently weather it away.
The site of an earlier Vesta test project in the Hamptons.Courtesy of Vesta
Olivine could address the harms of CO2 pollution in more ways than one. The ocean already absorbs about 30% of the carbon released into the atmosphere each year, which has made the water more acidic and less hospitable to many of its inhabitants. But when olivine triggers these reactions, it can act as a sort of antacid. This approach to carbon removal is also known as enhancing the ocean’s alkalinity and olivine is just one of a number of different ways to do it. Another company called Planetary is experimenting with adding a different mineral, magnesium hydroxide, to the ocean. Ebb Carbon, on the other hand, is sucking up seawater and running it through a membrane to increase its alkalinity, before returning it to the tides.
Both already have field trials up and running, but instead of trying to conduct stand-alone experiments in the open ocean they’ve hitched onto existing ocean dumping permits. Ebb, for example, has set up at the Pacific Northwest National Laboratory’s facility in Sequim, Washington, where it is releasing treated seawater into wastewater that flows into the bay. Similarly, Planetary is conducting pilot projects at the wastewater outflows of a water treatment facility and power plant in Canada. Other ocean carbon removal companies, such as Los Angeles-based Captura, have opted to move abroad for their early projects and avoid the U.S. permitting puzzle altogether.
Vesta went to Duck because it is among the most studied stretches of coastline in the country. The town is home to an Army Corps coastal field research center known for its long-term data set on the surrounding waters. “Few locations on the globe provide a better archive of wave, water, bathymetry and other forces that shape nearshore conditions,” according to the Army Corps’ website. (“Bathymetry” is the topography of the seafloor.) That means Vesta will be able to get a more accurate picture of any changes the olivine is responsible for.
When Drew Havens, the town manager in Duck, first heard about Vesta’s plans, he was skeptical. “You're dumping something into the ocean, people automatically go to, well, is it going to harm humans? Is it going to be harmful to wildlife or other living organisms?” he told me.
Though some in the town are still nervous, Havens said he has become more comfortable with the idea as the project has been rigorously reviewed by environmental protection regulators at the federal and state level. Vesta’s scientists also engaged with the town council, did an open house for members of the public, and have generally invited questions and open dialogue.
Just because regulators have determined that the risks of this pilot project are low, however, doesn’t mean using olivine for carbon removal is risk-free. For one, the rock has to be mined — in this case, from a quarry in Norway, although it is also found in the U.S. — and transported to the project site. That’s likely to produce some environmental impacts, though the company estimates that the project will ultimately remove about 10 times more CO2 from the atmosphere than the emissions associated with running the experiment, including the mining and shipping of olivine.
But the biggest risk with mined olivine is that it contains nickel, said Jaime Palter, an associate professor of oceanography at the University of Rhode Island who has no affiliation with Vesta. Nickel can act as both a nutrient and a toxin for phytoplankton, she told me, so it's important to study whether putting olivine in the ocean will result in adverse effects.
Vesta has been closely examining that possibility. In fact, the project in Duck will be the company’s second U.S. field trial. In the summer of 2022, Vesta got permission from the town of Southampton in Long Island to spread olivine on the beach as part of a larger sand replenishment project that was already in the works. Vesta’s scientists worked with local academic partners at Cornell, SUNY Stony Brook, and Hamilton College to do extensive monitoring both before and after the sand was placed, collecting data on more than 20 indicators of the effects on the water, sediment, and ecology.
The company has since published two annual reports on the project. It is still awaiting analysis of many of the samples, but so far, the results have been promising, Green said. There has been no sign of trace metal accumulation in Eastern Oysters, a species known to accumulate pollutants from their environment, for instance. There was also no significant difference in water quality between control areas and the sites with olivine, and trace metal concentrations were below the relevant EPA water quality guidelines. The area’s benthic macrofauna — critters like clams and small crustaceans that live on or near the seafloor — were as abundant and various as before.
Notably, the tests also showed evidence of an increase in alkalinity in the waters of the olivine-treated area, which is the key reaction that leads to carbon removal. But Green said there’s more work to be done in terms of calculating where and when removal may have happened.
There’s also more work to be done to understand the effects of olivine in different environments, which brings us back to Duck. There, it will be deposited in 25-foot deep water instead of on the beach, helping Vesta to further refine its data and measurement methods. The plan is to continue testing and collecting data at the site for at least two years. The company declined to comment on the budget for the project. Vesta is funded primarily by venture capital investors but also raises money for research through an affiliated nonprofit.
Vesta may have been the first to get a federal permit to run a marine carbon removal test, but it definitely won’t be the last. Nikhil Neelakantan, a senior project manager at Ocean Visions, which is a nonprofit that advocates for ocean-based climate solutions, told me there are a number of other domestic projects in the pipeline, including more than a dozen government-funded research projects. The White House also recently set up a marine carbon removal fast track action committee with the mandate to create recommendations for policy, permitting, and regulatory standards for both research and implementation.
Neelakantan said there is work to do on clarifying the role of different agencies in regulating ocean carbon removal, and which laws apply to each method.
“This is an early first step, and it's exciting to see that it's finally going to come to fruition,” he said, of Vesta’s project in Duck. “I think there's momentum with this federal task force. It's going to be the first of many others that will happen soon.”
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From Kansas to Brooklyn, the fire is turning battery skeptics into outright opponents.
The symbol of the American battery backlash can be found in the tiny town of Halstead, Kansas.
Angry residents protesting a large storage project proposed by Boston developer Concurrent LLC have begun brandishing flashy yard signs picturing the Moss Landing battery plant blaze, all while freaking out local officials with their intensity. The modern storage project bears little if any resemblance to the Moss Landing facility, which uses older technology,, but that hasn’t calmed down anxious locals or stopped news stations from replaying footage of the blaze in their coverage of the conflict.
The city of Halstead, under pressure from these locals, is now developing a battery storage zoning ordinance – and explicitly saying this will not mean a project “has been formally approved or can be built in the city.” The backlash is now so intense that Halstead’s mayor Dennis Travis has taken to fighting back against criticism on Facebook, writing in a series of posts about individuals in his community “trying to rule by MOB mentality, pushing out false information and intimidating” volunteers working for the city. “I’m exercising MY First Amendment Right and well, if you don’t like it you can kiss my grits,” he wrote. Other posts shared information on the financial benefits of building battery storage and facts to dispel worries about battery fires. “You might want to close your eyes and wish this technology away but that is not going to happen,” another post declared. “Isn’t it better to be able to regulate it in our community?”
What’s happening in Halstead is a sign of a slow-spreading public relations wildfire that’s nudging communities that were already skeptical of battery storage over the edge into outright opposition. We’re not seeing any evidence that communities are transforming from supportive to hostile – but we are seeing new areas that were predisposed to dislike battery storage grow more aggressive and aghast at the idea of new projects.
Heatmap Pro data actually tells the story quite neatly: Halstead is located in Harvey County, a high risk area for developers that already has a restrictive ordinance banning all large-scale solar and wind development. There’s nothing about battery storage on the books yet, but our own opinion poll modeling shows that individuals in this county are more likely to oppose battery storage than renewable energy.
We’re seeing this phenomenon play out elsewhere as well. Take Fannin County, Texas, where residents have begun brandishing the example of Moss Landing to rail against an Engie battery storage project, and our modeling similarly shows an intense hostility to battery projects. The same can be said about Brooklyn, New York, where anti-battery concerns are far higher in our polling forecasts – and opposition to battery storage on the ground is gaining steam.
And more on the week’s conflicts around renewable energy.
1. Carbon County, Wyoming – I have learned that the Bureau of Land Management is close to approving the environmental review for a transmission line that would connect to BluEarth Renewables’ Lucky Star wind project.
2. Nantucket County, Massachusetts – Anti-offshore wind advocates are pushing the Trump administration to rescind air permits issued to Avangrid for New England Wind 1 and 2, the same approval that was ripped away from Atlantic Shores offshore wind farm last Friday.
3. Campbell County, Virginia – The HEP Solar utility-scale project in rural Virginia is being accused of creating a damaging amount of runoff, turning a nearby lake into a “mud pit.” (To see the story making the rounds on anti-renewables social media, watch this TV news segment.)
4. Marrow County, Ohio – A solar farm in Ohio got approvals for once! Congratulations to ESA Solar on this rare 23-acre conquest.
5. Madison County, Indiana – The Indiana Supreme Court has rejected an effort by Invenergy to void a restrictive county ordinance.
6. Davidson County, North Carolina – A fraught conflict is playing out over a Cypress Creek Renewables solar project in the town of Denton, which passed a solar moratorium that contradicts approval for the project issued by county officials in 2022.
7. Knox County, Nebraska – A federal judge has dismissed key aspects of a legal challenge North Fork Wind, a subsidiary of National Grid Renewables, filed against the county for enacting a restrictive wind ordinance that hinders development of their project.
8. Livingston Parish, Louisiana – This parish is extending a moratorium on new solar farm approvals for at least another year, claiming such action is necessary to comply with a request from the state.
9. Jefferson County, Texas – The city council in the heavily industrial city of Port Arthur, Texas, has approved a lease for constructing wind turbines in a lake.
10. Linn County, Oregon – What is supposed to be this county’s first large-scale solar farm is starting to face pushback over impacts to a wetlands area.Today’s sit-down is with Nikhil Kumar, a program director at GridLab and an expert in battery storage safety and regulation. Kumar’s folks reached out to me after learning I was writing about Moss Landing and wanted to give his honest and open perspective on how the disaster is impacting the future of storage development in the U.S. Let’s dive in!
The following is an abridged and edited version of our conversation.
So okay – walk me through your perspective on what happened with Moss Landing.
When this incident occurred, I’d already been to Moss Landing plenty of times. It caught me by surprise in the sense that it had reoccurred – the site had issues in the past.
A bit of context about my background – I joined GridLab relatively recently, but before that I spent 20 years in this industry, often working on the integrity and quality assurance of energy assets, anything from a natural gas power plant to nuclear to battery to a solar plant. I’m very familiar with safety regulation and standards for the energy industry, writ large.
Help me understand how things have improved since Moss Landing. Why is this facility considered by some to be an exception to the rule?
It’s definitely an outlier. Batteries are very modular by nature, you don’t need a lot of overall facility to put battery storage on the ground. From a construction standpoint, a wind or solar farm or even a gas plant is more complex to put together. But battery storage, that simplicity is a good thing.
That’s not the case with Moss Landing. If you look at the overall design of these sites, having battery packs in a building with a big hall is rare.
Pretty much every battery that’s been installed in the last two or three years, industry has already known about this [risk]. When the first [battery] fire occurred, they basically containerized everything – you want to containerize everything so you don’t have these thermal runaway events, where the entire battery batch catches fire. If you look at the record, in the last two or three years, I do not believe a single such design was implemented by anybody. People have learned from that experience already.
Are we seeing industry have to reckon with this anyway? I can’t help but wonder if you’ve witnessed these community fears. It does seem like when a fire happens, it creates problems for developers in other parts of the country. Are developers reckoning with a conflation from this event itself?
I think so. Developers that we’ve talked to are very well aware of reputational risk. They do not want people to have general concern with this technology because, if you look at how much battery is waiting to be connected to the grid, that’s pretty much it. There’s 12 times more capacity of batteries waiting to be connected to the grid than gas. That’s 12X.
We should wait for the city and I would really expect [Vistra] to release the root cause investigation of this fire. Experts have raised a number of these potential root causes. But we don’t know – was it the fire suppression system that failed? Was it something with the batteries?
We don’t know. I would hope that the details come out in a transparent way, so industry can make those changes, in terms of designs.
Is there anything in terms of national regulation governing this sector’s performance standards and safety standards, and do you think something like that should exist?
It should exist and it is happening. The NFPA [National Fire Prevention Association] is putting stuff out there. There might be some leaders in the way California’s introduced some new regulation to make sure there’s better documentation, safety preparedness.
There should be better regulation. There should be better rules. I don’t think developers are even against that.
OK, so NFPA. But what about the Trump administration? Should they get involved here?
I don’t think so. The OSHA standards apply to people who work on site — the regulatory frameworks are already there. I don’t think they need some special safety standard that’s new that applies to all these sites. The ingredients are already there.
It’s like coal power plants. There’s regulation on greenhouse gas emissions, but not all aspects of coal plants. I’m not sure if the Trump administration needs to get involved.
It sounds like you're saying the existing regulations are suitable in your view and what’s needed is for states and industry to step up?
I would think so. Just to give you an example, from an interconnection standpoint, there’s IEEE standards. From the battery level, there are UL standards. From the battery management system that also manages a lot of the ins and outs of how the battery operates —- a lot of those already have standards. To get insurance on a large battery site, they have to meet a lot of these guidelines already — nobody would insure a site otherwise. There’s a lot of financial risk. You don’t want batteries exploding because you didn’t meet any of these hundreds of guidelines that already exist and in many cases standards that exist.
So, I don’t know if something at the federal level changes anything.
My last question is, if you were giving advice to a developer, what would you say to them about making communities best aware of these tech advancements?
Before that, I am really hoping Vistra and all the agencies involved [with Moss Landing] have a transparent and accountable process of revealing what actually happened at this site. I think that’s really important.