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Energy

Battery installation.
Spotlight

Battery Developers Are Feeling Bullish on Mamdani

NineDot Energy’s nine-fiigure bet on New York City is a huge sign from the marketplace.

Hotspots

A Solar Fight in Wild, Wild Country

The week’s most notable updates on conflicts around renewable energy and data centers.

Yellow
Energy

Scoop: NRG Buys New York’s Biggest Fossil Fueled Power Plant

The sale of Ravenswood Generating Station closed at the end of January.

Blue
The Supreme Court.

RIP Trump’s Liberation Day and Fentanyl Tariffs

Clean energy stocks were up after the court ruled that the president lacked legal authority to impose the trade barriers.

Donald Trump.

Loaded Barrel

On geothermal’s heat, Exxon Mobil’s CCS push, and Maine’s solar

Yellow
AM Briefing

Mercury Rules in Retrograde

On the real copper gap, Illinois’ atomic mojo, and offshore headwinds

Smokestacks.
<p>Heatmap Illustration/Getty Images</p>

Current conditions: The deadliest avalanche in modern California history killed at least eight skiers near Lake Tahoe • Strong winds are raising the wildfire risk across vast swaths of the northern Plains, from Montana to the Dakotas, and the Southwest, especially New Mexico, Texas, and Oklahoma • Nairobi is bracing for days more of rain as the Kenyan capital battles severe flooding.

THE TOP FIVE

1. After nuking carbon regulations, EPA guts mercury limits on coal plants

Last week, the Environmental Protection Agency repealed the “endangerment finding” that undergirds all federal greenhouse gas regulations, effectively eliminating the justification for curbs on carbon dioxide from tailpipes or smokestacks. That was great news for the nation’s shrinking fleet of coal-fired power plants. Now there’s even more help on the way from the Trump administration. The agency plans to curb rules on how much hazard pollutants, including mercury, coal plants are allowed to emit, The New York Times reported Wednesday, citing leaked internal documents. Senior EPA officials are reportedly expected to announce the regulatory change during a trip to Louisville, Kentucky on Friday. While coal plant owners will no doubt welcome less restrictive regulations, the effort may not do much to keep some of the nation’s dirtiest stations running. Despite the Trump administration’s orders to keep coal generators open past retirement, as Heatmap’s Matthew Zeitlin wrote in November, the plants keep breaking down.

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Energy

Trump’s One Big Beautiful Blow to the EV Supply Chain

New data from the Clean Investment Monitor shows the first year-over-year quarterly decline since the project began.

Cutting an EV charging cord.
<p>Heatmap Illustration/Getty Images</p>

Investment in the clean economy is flagging — and the electric vehicle supply chain is taking the biggest hit.

The Clean Investment Monitor, a project by the Rhodium Group and the Massachusetts Institute of Technology’s Center for Energy and Environmental Policy Research that tracks spending on the energy transition, found that total investment in clean technology in the last three months of 2025 was $60 billion. That compares to $68 billion in the fourth quarter of 2024 and $79 billion in the third quarter of last year. While total clean investment in 2025 was $277 billion — the highest the group has ever recorded — the fourth quarter of 2025 was the first time since the Clean Investment Monitor began tracking that the numbers fell compared to the same quarter the year before.

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