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But this might all be moot thanks to the “major questions doctrine.”

Could President Trump’s expansive interpretation of the International Emergency Economic Powers Act empower a future president to, gasp, tariff carbon intensive goods?
That’s the terrifying prospect Justice Neil Gorsuch, a staunch conservative who often votes in line with Trump and his administration’s positions, raised to Solicitor General D. John Sauer in Wednesday’s oral arguments in the federal court case seeking to throw out Trump’s tariffs.
In a series of questions designed to draw out what limits Sauer thought existed on executive power, Gorsuch asked, “Could the president impose a 50% tariff on gas-powered cars and auto parts to deal with the unusual and extraordinary threat from abroad of climate change?” (This echoed the language of the statute the Solicitor General cited to justify the tariffs.)
“It’s very likely that could be done,” Sauer conceded.
“I think that would have to be the logic of your view,” Gorsuch replied.
“Obviously this administration would say that’s a hoax, this is not a real crisis,” Sauer said.
“I’m sure you would,” Gorsuch said to chuckles.
“But that would be a question for Congress, under our interpretation, not the courts,” Sauer said.
Gorsuch’s questioning touched on the “major questions doctrine,” first propounded in the court’s 2022 opinion in West Virginia v. Environmental Protection Agency. In that case, which resulted in the court striking down the Obama-era Clean Power Plan power plant regulations, the conservative majority argued that “given both separation of powers principles and a practical understanding of legislative intent, the agency must point to ‘clear congressional authorization’ for the authority it claims,” which it claimed the rules lacked.
In a note to clients following the emissions rules case, the white shoe law firm Davis Polk wrote that the majority opinion “does not provide guidance for applying the major questions doctrine in future cases,” but noted that a concurrence authored by Justice Gorsuch “attempted to provide such guidance for future cases.” In said concurrence, Gorsuch wrote that the major questions doctrine could be invoked when the executive branch is dealing with a question of “great political significance” or “a significant portion of the American economy.”
Hmm!
Some progressives flagged this aspect of the tariffs case as it worked its way through the courts, pointing out that it could call into question powers that future presidents may want to use to implement expansive industrial policy, including climate policy. Some of the broader legal arguments against the tariffs, Todd Tucker of the progressive Roosevelt Institute wrote in a brief, “tilt the scales overwhelmingly against progressive priorities.”
“Limits on Trump today will bind future presidents tomorrow. This could include centrists, progressives, MAGA types, or traditional conservatives, who will need or want robust executive tools to address ruinous competitiveness or climate emergencies.”
But in pursuit of their clients’ interests, advocates for striking down the tariffs were more than happy to pick up the thread dropped by Gorsuch to make libertarian-leaning arguments about presidential powers.
“It is simply implausible that in enacting” the International Emergency Economic Powers Act, the law Trump has used to justify his retributive import taxes, “Congress handed the president the power to overhaul the entire tariff system and the American economy in the process, allowing him to set and reset tariffs or any and every product from any and every country at any and all times,” Neal Katyal, the lawyer arguing on behalf of a beer and wine distributor and a longtime figure in Democratic legal circles, said in his oral argument.
Perhaps seeking to appeal to the Republican majority on the court, Katyal returned to Justice Gorsuch’s climate change example, arguing that “if the government wins, another president could declare a ’climate emergency’ and impose huge tariffs without floors or ceilings, as Justice Gorsuch said.”
“My friend’s answer,” Katyal said, referring to Sauer, “is, ‘This administration would declare it a hoax.’ The next president may not quite say that.”
Many legal experts thought that the administration got the worse of the oral arguments and questioning of the attorneys, with conservative Justices Gorsuch and Amy Coney Barrett and Chief Justice John Roberts all asking skeptical questions of Sauer, while Justices Clarence Thomas and Samuel Alito repeatedly threw the White House argumentative lifelines, including, in Alito’s case, suggesting other laws that could justify the tariffs.
Alito even gently mocked Katyal, a Democrat who served as acting solicitor general in the Obama administration, for blatantly using conservative-tinged legal arguments about the scope of executive authority over the economy.
“I wonder if you ever thought that your legacy as a constitutional advocate would be the man who revived the non-delegation argument,” referring to the idea that certain powers are too much akin to lawmaking to delegate to the executive branch, which in theory could vastly restrict the authority of regulators.
But Katyal resisted the implied contradiction and persisted in targeting the right wing of an already conservative Supreme Court.
“Heck yes,” Katyal said. “I think Justice Gorsuch nailed it on the head when saying that when you’re dealing with a statute that is this open-ended — unlike anything we’ve ever seen.”
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We got a much better sense of the Trump administration’s nuclear buildout plans today.
The Energy Department announced its long-awaited loan program that will aim to build a new fleet of nuclear reactors across the country. The department’s in-house bank will provide low-interest loans of up to $17.5 billion to help utilities and power developers buy up to 10 Westinghouse AP1000s, the third-generation nuclear reactor that is that company’s flagship product.
I can’t say this program was entirely a surprise: If you read Heatmap, you’ll remember we reported on the existence of this program — and the discussions between the government, utilities, power developers, and Westinghouse — back in February. Gregory Beard, who leads the Energy Department’s in-house bank, also teased the program at a Houston conference in April.
The program looks roughly as anticipated: It will aim to construct up to 10 new reactors, with two AP1000 Westinghouse reactors across five sites. That could add up to 11 gigawatts of nearly around the clock zero-carbon electricity to the power grid. What’s new is that Westinghouse and the utility will jointly own the power plants.
According to The Wall Street Journal, utilities and Westinghouse will each own part of the plants once they’re built. Five loans will become available; the department is already in talks with seven utilities.
At the high level, it’s a cool program — or at least I think so. Nuclear support has become surprisingly bipartisan, at least at the elite level, in recent years. In New York, Governor Kathy Hochul is trying to develop new nuclear plants. As we’ve noted before, the countries with some of the cleanest power grids in the world, such as France and Sweden, achieved their low carbon emissions in part by undertaking large, state-led nuclear energy buildouts. France, in particular, harmonized its nuclear power plants to a single reactor design and then built them to spec across the landscape. China is engaged in a similar buildout now with a variant of the AP1000. By getting behind the AP1000 in the United States, the Trump administration is following a global best practice.
The idea of a mass buildout makes sense for other reasons, too. Recent nuclear projects in the United States have often faced delays because construction and manufacturing timelines don’t line up. AP1000s are manufactured partly off-site in Westinghouse facilities and then shipped in; when a part arrives late, an expensive construction crew has to sit idle while they wait for it to arrive. (These timing misalignments drove part of the Vogtle plant’s runaway costs in Georgia.) By placing what is in essence a bulk order for AP1000 parts, the new program aims to bring down the cost of production and even allows project sites to swap identical parts as they come available — if one site isn’t ready to receive a pressure vessel, for instance, it can go somewhere else.
I hesitate to praise the project's climate bonafides at the risk of discouraging the Trump administration, but it is worth noting that if this project were to succeed, it would be one of the largest state-assisted build-outs of zero-carbon electricity in recent American history. But it would still take some time to arrive: These reactors aren’t forecast to come online til 2035.
Let me note one more irony. For a long time, the country’s policymakers and nuclear industry (to the extent the latter exists) have dreamt of small modular reactors: petite fission plants that can be manufactured in a factory and would produce a few hundred megawatts. The AP1000, in both its American and Chinese iterations, is a very large reactor — but it has become, in a sense, modular and manufacturable.
Cameco, which owns about half of Westinghouse, saw its stock rise 1.8% in the day’s trading. Brookfield Renewable Partners, which owns the other half, was flat. It was otherwise a choppy day in the markets, with the S&P 500 falling 1.4% and some tech and AI-exposed companies continuing their slide.
There will be much more to say about this program, and we look forward to covering it at Heatmap.
Hyperscalers might be paying billions to avoid blame for rising electricity prices.
Here is a mystery for you: On Wednesday, the House Energy and Commerce Committee will take up the Ratepayer Protection Act, a bipartisan bill sponsored by Colorado Republican Gabe Evans and Florida Democrat Kathy Castor that seeks to enshrine Trump’s similarly named pledge into law.
Among the bill’s supporters is Kentucky Representative Brett Guthrie, a Republican and the chair of the committee. Guthrie is no opponent of artificial intelligence, saying in a statement praising the bill that “Winning the race to AI dominance is essential to securing America’s future global leadership, and that means expeditiously building the power infrastructure needed to support new technologies, while doing so in a responsible way.” Guthrie did not respond to a request for comment.
Microsoft, one of seven large technology companies that agreed to cover any additional grid infrastructure costs stemming from their data centers under Trump’s original Ratepayer Protection Pledge, supports the bill, describing it as an “important step to help ensure American families are protected from rising electricity costs.” Google, another signatory, generally backs the idea of specialized large load tariffs that allocate network costs back to the hyperscalers.
But … why? After all, these companies are voluntarily putting themselves on the hook for what could be billions of dollars in costs that would typically be socialized to all the customers on the grid.
The Data Center Coalition, a trade group including several hyperscalers, has been more circumspect about the bill. Cy McNeill, the group’s senior director of federal affairs, told me in a statement that the group “is reviewing the details of the Ratepayer Protection Act with our members and looks forward to engaging with policymakers on this important topic.”
Evans, Castor, Guthrie, and and the rest appear to be acting not out of hostility towards the AI industry, but rather from a desire to protect it from public backlash fed by rising electricity prices. Earlier this month, Guthrie co-signed a letter to FBI Director Kash Patel, among others, raising concerns that China had “engaged in a coordinated effort to slow U.S. growth in AI development and the building of infrastructure supporting AI data centers” by fomenting domestic opposition — hardly the interpretation of someone working against the industry.
The explanation, perhaps, lies in the answers to two big questions about the Ratepayer Protection Act:
1. Are data centers responsible for higher electricity prices now, or will they be in the future?
2. And would the approach taken in the law actually work to protect ratepayers?
As to the first question, analysts have come up with a nuanced answer. The electricity cost increases we’ve seen in the last five or so years have been largely driven by expenses associated with the distribution grid, including the poles and wires themselves. In some states, like California, the costs come back to wildfires; in others, like Maine, to storm remediation. Looking backwards to 2019, researchers have not been able to find a regular relationship between load growth and price hikes.
In fact, several states “absorbed large industrial and data center load additions while reducing inflation-adjusted retail prices,” according to researchers at Columbia University’s Center on Global Energy Policy. By contrast, some states with little load growth from industry or data centers, such as Maine or California, have seen prices rise substantially.
Many analysts expect electricity prices to continue rising nationally, and data centers could be a driver going forward as demand hits a grid whose capacity to generate and transmit electricity is increasingly strained. This is likely already happening in the country’s largest electricity market, PJM Interconnection, where the system’s independent market monitor has claimed that current and forecasted data center demand has cost customers over $23 billion from recent capacity auctions.
To get prices to actually fall — or at least grow more slowly —it would require that “low-cost supply is available, existing infrastructure is more fully utilized, and cost allocation ensures that new demand contributes to system efficiency,” the Columbia researchers write. Under business as usual however, prices will likely continue to rise.
On the second question, there is much more cynicism.
Critics of the original Ratepayer Protection Pledge, including Harvard Law School’s Ari Peskoe, pointed out that the actual parties to ratemaking — utilities and state regulators — were not involved in the pledge at all. Already, there are accusations that projects developed by pledge signatories could lead to higher prices. Meta's sprawling planned data center project in Louisiana is responsible for the utility’s plans to buy a Texas natural gas-fired power plant, according to documents filed by regulators reviewed by the Times-Picayune. The $1.8 billion deal could lead to $8 a month in additional costs for typical Louisiana ratepayers.
The Ratepayer Protection Act would go a bit further than the pledge, amending the Public Utility Regulatory Policies Act to “establish a Federal standard relating to the recovery of the full, incremental costs of upgrades that serve large-load customers.” Peskoe, however, described this to me in an email as “largely symbolic” and noted that “Congress may not force state regulators to do anything” under current Supreme Court jurisprudence. “This section of PURPA is basically Congress asking state regulators to please take a look at the ratemaking standard.”
That being said, Peskoe noted that “many states and non-regulated utilities do tend to consider PURPA ratemaking standards,” but that there’s “no enforcement mechanism,” depriving the law of any teeth. “States can reject the ratemaking standards or adopt them in a way that deviates from what Congress may have intended.”
Still, it is likely in the political interest of state regulators to come up with something on large load tariffs, the Cato Institute’s Travis Fisher told me. He recommended that the National Association of Regulatory Utility Commissioners “spearhead an initiative to get every state regulator to sign a ratepayer protection pledge,” if only to insulate themselves from political backlash and maintain their power over retail ratemaking.
But even if states do adopt the cost allocation principle, determining exactly which infrastructure is being installed due to a data center and what serves all users can be tricky.
“Any real-world example of this is going to be quite complicated, and the devil’s always in the details,” Ben Schifman, a senior technology fellow at the Institute for Progress and a former attorney at the Department of the Interior and the Department of Justice, told me. While it might be possible to conclude that “a given substation is simply only needed for that data center,” he said, “as soon as you start zooming out into the larger, big-ticket investments, it’s quite complicated to attribute the cost to one user or one group of users.”
In summary, the Ratepayer Protection Act will ask state regulators to consider an approach to data center cost allocation that may not capture all of their costs and will likely do little to arrest the fundamental drivers of higher electricity costs. Viewed through this lens, the logic of the coalition supporting both the original Ratepayer Protection Pledge and the beefed-up Ratepayer Protection Act comes into focus.
Electricity prices are likely to continue to rise, and data center construction has powerful interests behind it. The public’s attitude towards data centers is rapidly souring, and no matter how many nuanced PDFs are published on the topic, people continue to blame data centers for higher electricity costs.
And if prices continue to rise, the big data center developers may be able to point to the Ratepayer Protection Act and say “well, it wasn’t me.”
On simplified oil and gas leases, lawsuits over plastic and coal, and a new climate research database
Current conditions: The U.K.’s Met Office issued its second-ever Red Extreme Heat Warning for Wednesday and Thursday • A wildfire near Eureka, Utah forced the town’s evacuation • Flash flood warnings are in effect today for Southern Massachusetts.
Lucid Motors is downsizing, again. The electric vehicle maker is laying off 18% of its staff just a few months after a 12% reduction in force in February, according to Electrek. The company also eliminated a second production shift at its factory in Casa Grande, Arizona. EV sales plummeted in the U.S. after the federal EV tax credit expired in September. While many automakers are canceling new electric vehicle lines in the U.S., Lucid hasn’t axed any plans yet, and will be releasing its first lower-cost EV, the Lucid Cosmos SUV, later this year with a price tag under $50,000. It’s also preparing to launch a robotaxi service later this year in partnership with Uber and the autonomous driving technology company Nuro. According to Lucid’s new CEO, Silvio Napoli, the staff cuts will help “simplify the company, sharpen execution, and position Lucid to become more competitive over time.”

Trump’s environmental deregulation crusade continues. The Interior Department proposed several changes to the rules governing oil and gas leasing on federal lands Monday that would limit public input and cut costs for companies. Under existing rules, which were updated during the Biden administration, companies must maintain a minimum bond of $500,000 for each state where they hold leases to cover the cost of capping oil and gas wells when they are done drilling. Trump’s proposal would reduce the requirement to $25,000, shifting the financial risk of remediation to state taxpayers. The new rules would also shorten public participation periods from 90 days to 10, and get rid of a requirement that companies include plans to minimize methane emissions when they apply for drilling permits.
Red states are going after California, this time for its nation-leading plastic regulations. In 2022, the Golden State passed a law setting plastic waste reduction targets and requiring companies to cover the cost of recycling of their own products. The state aims to cut single-use plastic packaging on products by 25% by 2032. Now, 17 attorneys general from red states have teamed up with the National Association of Wholesaler-Distributors, a trade group, to sue California, arguing that the rules represent an “unprecedented overreach” that will increase the cost of goods throughout the country.
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In the first case of its kind, 10 Australians are suing the government for violating their human rights by failing to limit fossil fuel production. The claimants, each of whom has been personally affected by climate change-fueled extreme weather, brought the case to the United Nations’ Human Rights Committee on Monday. Some of them have lost their homes to wildfires and floods, while others have experienced health impacts from heat waves. The case follows a 2025 ruling by the International Court of Justice that all governments have an obligation to protect people from climate change, citing support for fossil fuel production and consumption as a potential violation of this obligation. While that ruling didn’t have any enforcement power, it teed up the potential for country-level claims like this one in Australia. The country is the second largest exporter of coal in the world and the third largest exporter of liquified natural gas.
The rumors were true. The Trump administration has appointed Travis Kavulla, a former utility regulator and power company executive, to lead the Bonneville Power Administration, a federal agency that sells electricity from the government’s hydroelectric dams in the Pacific Northwest. Kavulla arrives as the agency prepares for a controversial exit from California’s real-time electricity trading market to join a new day-ahead market overseen by the Southwest Power Pool, a regional transmission organization. Environmental groups are urging Kavulla reconsider the decision, arguing that it risks raising energy costs for Northwest ratepayers.
The climate change research and news site Carbon Brief debuted Project Cosmos on Monday, the world’s largest database of research on the warming planet. It includes more than 1.8 million publications and “captures the vast body of human knowledge about climate change that has accumulated over more than a century of academic study.” The architects created a stunning “star” map that visualizes the collection by clustering of fields of study, such as medicine, chemistry, or agriculture. They also identified the 500 most-cited studies and scientists, with French carbon cycle modeler Philippe Ciais earning the top spot.