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Vermont is on the verge of becoming the first state to try it.

Dozens of cities and states have tried to sue the oil industry for damages related to climate change over the past several years, and so far, none of these cases has been successful. In fact, not one has even made it to trial.
In the meantime, the price tag for climate-related impacts has climbed ever higher, and states are growing more desperate for help with the bill. Out of that desperation, a new legal strategy was born, one that may have a better chance of getting fossil fuel companies to pay up. And Vermonters may be the first to benefit.
It’s called a climate superfund bill, and versions of it are floating through legislative chambers in New York, Massachusetts, and Maryland, in addition to Vermont. Though each bill is slightly different, the general premise is the same: Similar to the way the federal Superfund law allows the Environmental Protection Agency to seek funds retroactively from polluters to clean up contaminated sites, states will seek to bill fossil fuel companies retroactively for the costs of addressing, avoiding, and adapting to the damages that the emissions from their products have caused.
Though New York was the first state to introduce a climate superfund bill two years ago, Vermont may be the first to get it through a legislature. On Friday, the Vermont Senate voted 21 to five to approve amendments to the bill, and will vote next week on whether to send it to the House. An equivalent bill in the House is cosponsored by nearly two-thirds of state representatives and the policy also won the support of Vermont’s Attorney General.
If it gets past the governor’s desk, the bill will kick off a multiyear process that, in the most optimistic case, could bring money into the state by 2028. The first step is for the state Treasurer to assess the cost to Vermont, specifically, of emissions from the extraction and combustion of fossil fuels from 1995 to 2024, globally. Regulators will then request compensation from responsible parties in proportion to the emissions each company contributed. The state will identify responsible parties by focusing only on the biggest emitters, companies whose products generated at least a billion tons of emissions during that time. The money will go toward implementing a state “resilience and implementation strategy” to be mapped out in the next two years.
The idea of states retroactively billing fossil fuel companies for damages outside the context of a lawsuit might sound a little far-fetched. Or, at least, I thought it was when I first heard about it. How can that be legal?
Anthony Iarrapino, the lead lobbyist supporting the bill for the Conservation Law Foundation, a New England-based environmental law nonprofit, explained it this way. There is established case law that deals with retroactive liability in the context of hazardous waste — again, the Superfund law. “Even if your activities were legal at the time you undertook them, if they result in making a mess, then you can be on the hook for cleaning that mess,” he told me. “The idea here is looking at climate disruption as a polluted site.”
How is that fair? Well, the legal precedents supporting the Superfund law and similar policies turn on a key question. Did the companies understand that their activities were potentially harmful at the time they engaged in them? “If, objectively, you knew or should have known that your conduct, whether it was legal or not, was likely to result in damages that would impose costs on society,” Iarrapino said, “then it's fair, from a lookback perspective, to hold you accountable when those damages begin to manifest in the environment or in impacts to human health.” That’s because, according to precedent, you essentially assumed the risk that at some point in the future, you might be on the hook.
By now there’s a mountain of evidence that fossil fuel companies like Exxon did, in fact, know how damaging their products would be several decades before the period covered by the Vermont bill, based on internal research not shared with the public at the time. But Ben Edgerly Walsh, an advocate at the Vermont Public Interest Research Group, told me that even absent that evidence, they should have recognized the risk based on the scientific consensus that emerged in the 1970s and 1980s. To wit: Vermont chose 1995 as the start year for its bill because that’s when the first United Nations climate change conference was held.
“We shouldn't have to bear the cost of this ourselves,” said Walsh. “These oil companies that are still making hundreds of billions of dollars in profit annually should have to pay their fair share for the cost of the climate crisis they caused.”
Underpinning the bill — as well as many of the related lawsuits — is the advancement of “attribution science,” or the ability to quantify the economic losses that a region has borne due to anthropogenic climate change, as well as future losses that are already baked in, and then attribute them back to particular emitters. In testimony for the Vermont superfund bill, Justin Mankin, an associate professor at Dartmouth, stressed that these are peer reviewed, consensus, scientific methods — and that in general, they are conservative. “It is my opinion that we are systematically underestimating the economic cost of climate change to date,” he told the Vermont Judiciary Committee in February. “And that is because all of these climate damage cost assessment methods are inherently conservative, or limited by data.”
The bill’s sponsors also looked to research from Richard Heede, creator of the famous “Carbon Majors” database, which calculated the emissions of major fossil fuel companies based on the amount of oil, gas, and coal they each extracted and found that some 70% of fossil fuel emissions since 1988 can be attributed to 100 companies. In testimony to the Vermont Senate, Heede estimated that about 68 companies would be captured by the bill’s billion-ton threshold.
Of course, the fossil fuel industry patently disputes the science that Heede and Mankin expounded. The American Petroleum Institute submitted testimony warning of the “difficulties of establishing a conclusive link between anthropogenic climate change and alleged injuries to Vermont” and arguing that the emissions from individual companies over the last several decades cannot “be determined with great accuracy.” The group also called it “unfair” to charge the companies that sold oil and gas, considering they “did not combust fossil fuels but simply extracted or refined them in order to meet the needs and demands of the people.”
That might be where the biggest weak spot in the climate superfund bills — as well as the climate damages lawsuits — lies. There’s an underlying philosophical question, Martin Lockman, a climate law fellow at Columbia University, told me. Who in the supply chain is responsible for the pollution from fossil fuels?
The answer turns on a moral argument that fossil fuel companies have made enormous profits from fossil fuels for decades, all while knowing what the harms would be. “From a moral perspective, I think that these are very justified,” said Lockman, “but that will certainly get opened in litigation.”
If any of the climate superfund bills pass, they will absolutely be challenged in court. One reason they may see more success than the more direct lawsuits, however, is that they flip the burden of proof. If Vermont sued oil companies for damages, the burden would be on Vermont to prove its case, and as the defendants, the oil companies would get a “bag of tricks” to use to stall the case and make it very expensive to pursue, said Iarrapino. For example, many of these lawsuits have been delayed by years-long arguments over whether they should be tried in state or federal court, or whether the oil companies have to release certain documents.
“Even though it’s the same harms and the same contexts,” Iarrapino told me, “you’ve got a balance of power where they can win the case by losing slowly.” But if oil companies sue Vermont, for example, by calling its law unconstitutional, the burden of proof will be on them, and the state will have no incentive to delay the case.
I should note here that the federal Superfund law is not exactly the ideal model for this policy. Much of the time, the EPA can’t track down a company to ascribe blame for the contamination, and taxpayers end up footing the bill of the cleanup. Even when it does find a responsible party, said party often ends up litigating the amount owed for years. The Passaic River in New Jersey was declared a Superfund site 40 years ago, and the EPA is still fighting with Occidental over how much it should pay for the cleanup.
Iarrapino thinks there’s one key difference in the proposed climate superfund program. At contaminated sites, there can be a lot of potential polluters and so it’s difficult to assign blame. The Vermont bill attaches liability directly to the act of extracting and refining fossil fuels for combustion. “You either did that or you didn't do that,” he said. When it comes to companies like Exxon and BP, “that is their whole reason for existing.” That doesn’t mean companies won’t use all the firepower they have to dispute the amount they owe, however.
It may seem unfair for a single state, especially one as small as Vermont, to win compensation first when the damages are global and unequally distributed. But Lockman of Columbia said if these bills are successful, fossil fuel companies may stop fighting liability entirely and instead push the federal government to take action so they can be held to a more consistent standard across the country.
When I first reached Iarrapino, he told me that just downstairs from his office, someone was sawing and hammering the walls because the first floor had been entirely underwater when Montpelier flooded last summer. Three businesses that were in the building are gone. A recent estimate puts the cost of state-wide damages from the storm at $600 million.
“At this point,” he said, “what else does a state like Vermont have to lose?”
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NineDot Energy’s nine-fiigure bet on New York City is a huge sign from the marketplace.
Battery storage is moving full steam ahead in the Big Apple under new Mayor Zohran Mamdani.
NineDot Energy, the city’s largest battery storage developer, just raised more than $430 million in debt financing for 28 projects across the metro area, bringing the company’s overall project pipeline to more than 60 battery storage facilities across every borough except Manhattan. It’s a huge sign from the marketplace that investors remain confident the flashpoints in recent years over individual battery projects in New York City may fail to halt development overall. In an interview with me on Tuesday, NineDot CEO David Arfin said as much. “The last administration, the Adams administration, was very supportive of the transition to clean energy. We expect the Mamdani administration to be similar.”
It’s a big deal given that a year ago, the Moss Landing battery fire in California sparked a wave of fresh battery restrictions at the local level. We’ve been able to track at least seven battery storage fights in the boroughs so far, but we wouldn’t be surprised if the number was even higher. In other words, risk remains evident all over the place.
Asked where the fears over battery storage are heading, Arfin said it's “really hard to tell.”
“As we create more facts on the ground and have more operating batteries in New York, people will gain confidence or have less fear over how these systems operate and the positive nature of them,” he told me. “Infrastructure projects will introduce concern and reasonably so – people should know what’s going on there, what has been done to protect public safety. We share that concern. So I think the future is very bright for being able to build the cleaner infrastructure of the future, but it's not a straightforward path.”
In terms of new policy threats for development, local lawmakers are trying to create new setback requirements and bond rules. Sam Pirozzolo, a Staten Island area assemblyman, has been one of the local politicians most vocally opposed to battery storage without new regulations in place, citing how close projects can be to residences, because it's all happening in a city.
“If I was the CEO of NineDot I would probably be doing the same thing they’re doing now, and that is making sure my company is profitable,” Pirozzolo told me, explaining that in private conversations with the company, he’s made it clear his stance is that Staten Islanders “take the liability and no profit – you’re going to give money to the city of New York but not Staten Island.”
But onlookers also view the NineDot debt financing as a vote of confidence and believe the Mamdani administration may be better able to tackle the various little bouts of hysterics happening today over battery storage. Former mayor Eric Adams did have the City of Yes policy, which allowed for streamlined permitting. However, he didn’t use his pulpit to assuage battery fears. The hope is that the new mayor will use his ample charisma to deftly dispatch these flares.
“I’d be shocked if the administration wasn’t supportive,” said Jonathan Cohen, policy director for NY SEIA, stating Mamdani “has proven to be one of the most effective messengers in New York City politics in a long time and I think his success shows that for at least the majority of folks who turned out in the election, he is a trusted voice. It is an exercise that he has the tools to make this argument.”
City Hall couldn’t be reached for comment on this story. But it’s worth noting the likeliest pathway to any fresh action will come from the city council, then upwards. Hearings on potential legislation around battery storage siting only began late last year. In those hearings, it appears policymakers are erring on the side of safety instead of blanket restrictions.
The week’s most notable updates on conflicts around renewable energy and data centers.
1. Wasco County, Oregon – They used to fight the Rajneeshees, and now they’re fighting a solar farm.
2. Worcester County, Maryland – The legal fight over the primary Maryland offshore wind project just turned in an incredibly ugly direction for offshore projects generally.
3. Manitowoc County, Wisconsin – Towns are starting to pressure counties to ban data centers, galvanizing support for wider moratoria in a fashion similar to what we’ve seen with solar and wind power.
4. Pinal County, Arizona – This county’s commission rejected a 8,122-acre solar farm unanimously this week, only months after the same officials approved multiple data centers.
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A conversation with Adib Nasle, CEO of Xendee Corporation
Today’s Q&A is with Adib Nasle, CEO of Xendee Corporation. Xendee is a microgrid software company that advises large power users on how best to distribute energy over small-scale localized power projects. It’s been working with a lot with data centers as of late, trying to provide algorithmic solutions to alleviate some of the electricity pressures involved with such projects.
I wanted to speak with Nasle because I’ve wondered whether there are other ways to reduce data center impacts on local communities besides BYO power. Specifically, I wanted to know whether a more flexible and dynamic approach to balancing large loads on the grid could help reckon with the cost concerns driving opposition to data centers.
Our conversation is abridged and edited slightly for clarity.
So first of all, tell me about your company.
We’re a software company focused on addressing the end-to-end needs of power systems – microgrids. It’s focused on building the economic case for bringing your own power while operating these systems to make sure they’re delivering the benefits that were promised. It’s to make sure the power gap is filled as quickly as possible for the data center, while at the same time bringing the flexibility any business case needs to be able to expand, understand, and adopt technologies while taking advantage of grid opportunities, as well. It speaks to multiple stakeholders: technical stakeholders, financial stakeholders, policy stakeholders, and the owner and operator of a data center.
At what point do you enter the project planning process?
From the very beginning. There’s a site. It needs power. Maybe there is no power available, or the power available from the grid is very limited. How do we fill that gap in a way that has a business case tied to it? Whatever objective the customer has is what we serve, whether it’s cost savings or supply chain issues around lead times, and then the resiliency or emissions goals an organization has as well.
It’s about dealing with the gap between what you need to run your chips and what the utility can give you today. These data center things almost always have back-up systems and are familiar with putting power on site. It must now be continuous. We helped them design that.
With our algorithm, you tell it what the site is, what the load requirements are, and what the technologies you’re interested in are. It designs the optimal power system. What do we need? How much money is it going to take and how long?
The algorithm helps deliver on those cost savings, deliverables, and so forth. It’s a decision support system to get to a solution very, very quickly and with a high level of confidence.
How does a microgrid reduce impacts to the surrounding community?
The data center obviously wants to power as quickly and cheaply as possible. That’s the objective of that facility. At the same time, when you start bringing generation assets in, there are a few things that’ll impact the local community. Usually we have carbon monoxide systems in our homes and it warns us, right? Emissions from these assets become important and there’s a need to introduce technologies in a way that introduces that power gap and the air quality need. Our software helps address the emissions component and the cost component. And there are technologies that are silent. Batteries, technology components that are noise compliant.
From a policy perspective and a fairness perspective, a microgrid – on-site power plant you can put right next to the data center – helps unburden the local grid at a cost of upgrades that has no value to ratepayers other than just meeting the needs of one big customer. That one big customer can produce and store their own power and ratepayers don’t see a massive increase in their costs. It solves a few problems.
What are data centers most focused on right now when it comes to energy use, and how do you help?
I think they’re very focused on the timeframe and how quickly they can get that power gap filled, those permits in.
At the end of the day the conversation is about the utility’s relationship with the community as opposed to the data center’s relationship with the utility. Everything’s being driven by timelines and those timelines are inherently leaning towards on-site power solutions and microgrids.
More and more of these data center operators and owners are going off-grid. They’ll plug into the grid with what’s available but they’re not going to wait.
Do you feel like using a microgrid makes people more supportive of a data center?
Whether the microgrid is serving a hospital or a campus or a data center, it’s an energy system. From a community perspective, if it’s designed carefully and they’re addressing the environmental impact, the microgrid can actually provide shock absorbers to the system. It can be a localized generation source that can bring strength and stability to that local, regional grid when it needs help. This ability to take yourself out of the equation as a big load and run autonomously to heal itself or stabilize from whatever shock it's dealing with, that’s a big benefit to the local community.