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AM Briefing

Trump Launches a New Attack on California’s Clean Car Rules

On the housing bill, clean cement, and grid upgrades

San Francisco traffic.
Heatmap Illustration/Getty Images

Current conditions: New Orleans is expecting light rain with temperatures climbing near 90 degrees Fahrenheit as the city marks the 20th anniversary of Hurricane Katrina • Torrential rains could dump anywhere from 8 to 12 inches on the Mississippi Valley and the Ozarks • Japan is sweltering in temperatures as high as 104 degrees.

THE TOP FIVE

1. Trump launches a new attack on California’s clean car rules

Smog city.Apu Gomes/Getty Images

In a new lawsuit filed Thursday, the Trump administration accused California of abusing its power under the Clean Air Act to enact strict rules on planet-heating pollution from cars that unlawfully forces the country to transition to electric vehicles. The litigation comes about nine months after the Republican-controlled Congress voted to block California from banning sales of gas-powered cars by 2035, and looks to halt statewide rules that Sacramento has continued to enforce. If successful, The New York Times noted that the case “could reverberate far beyond California,” given that 17 states representing more than a third of the U.S. automobile market follow California’s standards. “While the Trump administration surrenders the future of the auto industry to China, California will continue competing globally to win the clean vehicle market,” Anthony Martinez, a spokesperson for Governor Gavin Newsom, told the newspaper, adding, “This lawsuit is meritless, and we’re not backing down from this fight.”

The lawsuit came right as the California-based electric automaker Lucid unveiled its first midsize electric SUVs, called the Cosmos and Earth. A third model is in the works, the company said at its latest investor conference, according to InsideEVs.

2. The Senate overwhelmingly approves a big housing bill with big climate stakes

The Senate voted 89-to-10 on Thursday to approve the 21st Century ROAD to Housing Act. While the legislation faces an uncertain future in the House, its passage “is nevertheless a milestone for U.S. federal housing policy — and, in less obvious ways, for climate policy,” Heatmap’s Jeva Lange wrote yesterday.

Here’s a quick breakdown of what she covers in her explainer:

  • The impact of the so-called “build-to-rent” ban.
  • Why a new categorical exclusion from the National Environmental Protection Act is risky.
  • How retrofitting abandoned buildings might work.
  • The new definition of manufactured housing.
  • Where grants for home weatherization come in.

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  • 3. Microsoft is in talks to lease data centers from Stargate

    Microsoft is in “advanced talks” to lease hundreds of megawatts of data center capacity at the Abilene Stargate campus in Texas, The Information reported. Developed by data center giant Crusoe, the project is the first of the $500 billion OpenAI-backed Stargate venture to go live. The site, operated by tech giant Oracle, had originally been slated to expand from 1.2 gigawatts to 2 gigawatts. But as Data Center Dynamics reported, the companies abandoned the plans “due to financing challenges and OpenAI’s frequently changing demand forecasting and shifting view of Stargate.”

    Over in Mississippi, meanwhile, Elon Musk’s xAI scored a win when regulators this week authorized the AI company to build a power plant with 41 natural gas-fired turbines to power its data centers, CNBC reported. The NAACP and other civil rights groups had tried to halt the vote, which was held on the state’s primary election day and thus prevented voters from attending. “We are outraged that, despite the community’s clear demand to move the Election Day hearing, MDEQ chose to bulldoze through a decision that silenced the very residents most harmed by it,” Abre’ Conner, director of environmental and climate justice at NAACP, said in a statement referring to the Mississippi Department of Environmental Quality.

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  • 4. Clean cement startup Sublime Systems guts workforce after Trump cuts

    Sublime Systems, the Massachusetts company that Canary Media called “one of the most promising low-carbon cement startups,” has laid off about two-thirds of its workforce this week in response to the Trump administration’s repeal of a key grant. The company had already paused construction in December on its forthcoming commercial-scale facility. The moves come after the Department of Energy clawed back an $87 million award from the now-defunct Office of Clean Energy Demonstrations.

    It’s not the only Massachusetts-based company aiming to decarbonize heavy industry that cut jobs this month. The green steelmaker Boston Metal slashed 71 of its workers after an “unforeseen industrial accident” at the company’s plant in Brazil made meeting the commercial progress needed to unlock an expected tranche of financing impossible. The layoffs take effect next week.

    5. Energy Department offers $2 billion for upgrades to a grid facing ‘eye-popping’ demand

    The Energy Department made $1.9 billion in funding available Thursday for grid upgrades that can help push more electricity through existing lines. The money, which came with a call for proposals, is designated for “the rapid deployment of reconductoring,” a process that involves swapping old cables for higher-capacity lines, and other advanced transmission technologies “that expand transfer capability, strengthen reliability and resource adequacy, and reduce costs for consumers, all while making use of existing rights of way.”

    The timing is no surprise. The independent market monitor of the PJM Interconnection, America’s largest electricity market, shared what Heatmap’s Matthew Zeitlin called “eye-popping figures on how data centers raise electricity costs” in its latest annual report. “Data center load growth is the primary reason for recent and expected capacity market conditions, including total forecast load growth, the tight supply and demand balance, and high prices,” the ombudsman unit said in the report, released Thursday.


    THE KICKER

    Sunrun already dominated America’s rooftop solar market. Now the company’s batteries make up nearly half of all residential storage capacity deployed last year in the U.S. Sunrun built 1.5 gigawatt-hours of batteries throughout 2025, when the Solar Energy Industries Association estimates the country added 3.1 gigawatt-hours of new capacity. That puts Sunrun’s share of the market last year at about 48%. “Our deliberate and decisive pivot to provide Americans with energy independence is why Sunrun leads the residential energy storage sector,” Sunrun CEO Mary Powell said in a press release. “Sunrun’s battery fleet provides important resiliency benefits to our customers and immense support to the power grid, serving as the backbone of our nation-leading distributed power plant.”

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    Politics

    How New York Is Weakening Its Climate Law

    The state is the first to backtrack on binding emissions legislation.

    Kathy Hochul.
    Heatmap Illustration/Getty Images

    A wave of climate action swept the country’s statehouses in the early 2020s, with nearly two dozen states setting targets to slash their emissions. New York was ahead of the pack and among the most ambitious, passing the Climate Leadership and Community Protection Act, or CLCPA, in the summer of 2019 to achieve net zero emissions by 2050.

    Now, however, the Empire State will distinguish itself as the first of the bunch to walk back its landmark climate law in the wake of Trump’s re-election.

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    Blue
    AM Briefing

    Oil Prices Slip

    On a California chem leak, solar manufacturing, and BHP’s climate retreat

    Oil production.
    Heatmap Illustration/Getty Images

    Current conditions: Unprecedented May heat is roasting Western Europe, with temperatures shattering records in at least 20 French towns and soaring to 95 degrees Fahrenheit in London • Bougainville, the autonomous and ethnically distinct region of Papua New Guinea that’s expected to vote for independence next year to become the world’s newest nation, is enduring a week of lightning storms and heavy rain • The Tajik city of Khorog, a provincial capital located in a canyon near the Afghan border, is bracing for snow.


    THE TOP FIVE

    1. Oil prices slide amid hopes for an extended Iran War ceasefire

    The price per barrel of crude fell nearly 7% on Monday as Iranian negotiators arrived in Qatar for peace talks the same day two tankers carrying liquified natural gas passed through the Strait of Hormuz. The vessels shipping LNG from Qatar to China and Pakistan, respectively, successfully navigated the waterway at the mouth of the Persian Gulf on Monday. The signal of a loosening blockade comes two days after another tanker taking crude to China crossed the strait. While President Donald Trump said over the weekend that an agreement in principle to halt fighting with Tehran could come soon, The Wall Street Journal reported that it would take far longer to ease the bottlenecks created by the conflict. Despite reports of new U.S. strikes in Iran Monday night, prices fell another 4% in early trading Tuesday.

    Keep reading...Show less
    Blue
    Podcast

    Nvidia’s Case for Why AI Will Cut Emissions

    Rob sits down with the Josh Parker, head of sustainability at America’s world-leading chip designer.

    Nvidia headquarters.
    Heatmap Illustration/Getty Images

    America’s tech companies are transforming the electricity system — building entirely new fleets of new solar panels, batteries, and gas turbines — in order to power what are essentially warehouses filled with cutting-edge chips.

    Almost all of those chips are made by Nvidia. On this week’s episode of Shift Key, Rob is joined by Josh Parker, Nvidia’s head of sustainability. They discuss the climate and electricity impacts of artificial intelligence, why Josh is incredibly bullish on AI’s ability to cut carbon emissions and whether it has done so so far, and the company's work with clean energy and fossil fuel companies.

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