Emily Pontecorvo
@emilypont.bsky.social
📤 12837
📥 1087
📝 392
Staff writer
@heatmap.news
| signal: emilypont.89
How did EPA ultimately justify its decision to reverse course on greenhouse gas emissions? The agency's 3 arguments will define the inevitable court battle over this move. Here's what they are.
heatmap.news/climate/epa-...
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The 3 Arguments Trump Used to Gut Greenhouse Gas Regulations
Whether any of them will hold up in court is now the big question.
https://heatmap.news/climate/epa-endangerment-finding-arguments
about 15 hours ago
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Emily Pontecorvo
Heatmap News
about 15 hours ago
The Trump administration finally issued its justifications for repealing the endangerment finding for greenhouse gases. Now the big question: Will they hold up in court?
@emilypont.bsky.social
walks through the arguments:
heatmap.news/climate/epa-...
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The 3 Arguments Trump Used to Gut Greenhouse Gas Regulations
Whether any of them will hold up in court is now the big question.
https://heatmap.news/climate/epa-endangerment-finding-arguments
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lol
about 19 hours ago
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While I anxiously refresh various government websites because the EPA hasn't actually posted its formal repeal of the endangerment finding yet, here's what we know and don't know...
add a skeleton here at some point
1 day ago
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I wrote about the first 100% transparent climate risk tool. You can look up your home's wildfire risk, w/ all underlying data, methods, and code available to dl. The hope is to get this info out of black box models and invite public/scientific scrutiny and collaboration.
heatmap.news/adaptation/c...
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This New Wildfire Risk Model Has No Secrets
CarbonPlan has a new tool to measure climate risk that comes with full transparency.
https://heatmap.news/adaptation/carbonplan-fire-risk
4 days ago
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The Treasury's guidance for 45z, the Clean Fuel tax credit, indicates its moving forward with allowing biofuels producers to account for "climate smart agriculture" — which could ultimately just make the credit an even bigger subsidy for ethanol
heatmap.news/politics/45z...
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The Climate-Smart Program Trump Didn’t Kill (Yet)
New guidelines for the clean fuel tax credit reward sustainable agriculture practices — but could lead to greater emissions anyway.
https://heatmap.news/politics/45z-climate-smart-agriculture
5 days ago
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We are expecting the EPA to make a decision about its "endangerment finding" for greenhouse gases in the next week or so. While many expect the agency to rescind it, there's a few important questions to look out for about how the move is justified. Here's why.
heatmap.news/climate/epa-...
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The 3 Big Unknowns About the EPA’s Biggest Climate Science Rollback Ever
What to watch for when the agency releases its final decision on the greenhouse gas endangerment finding.
https://heatmap.news/climate/epa-endangerment-finding-questions
12 days ago
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Emily Pontecorvo
Tim De Chant
12 days ago
What if our thinking about Elon Musk is all wrong? What if he isn't the next Henry Ford, but the 21st century's Jack Welch or John D. Rockefeller?
techcrunch.com/2026/02/01/b...
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Bye-bye, corporate conglomerates. Hello personal conglomerates. | TechCrunch
Elon Musk's reported merging of SpaceX, xAI, and Tesla harkens back to the heyday of General Electric — or maybe the robber barons of the Gilded Age.
https://techcrunch.com/2026/02/01/bye-bye-corporate-conglomerates-hello-personal-conglomerates/
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climate reporting under the Biden admin: tracking grant announcements climate reporting under the Trump admin: tracking lawsuits
16 days ago
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Michigan's new fossil fuel lawsuit is fascinating. The state is alleging antitrust violations, arguing that Big Oil colluded to stifle competition. I spoke to experts about the case and the challenge of proving conspiracy vs. independent responses to market pressures.
heatmap.news/climate/mich...
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Why Michigan’s Big Oil Lawsuit Is Not Like the Others
Fossil fuel companies colluded to stifle competition from clean energy, the state argues.
https://heatmap.news/climate/michigan-big-oil-antitrust
17 days ago
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Emily Pontecorvo
Justine Calma
17 days ago
"Forcing someone who owns an e-bike without a throttle that can’t go faster than 20mph to register their bike with the DMV, acquire a license, and buy insurance ... will absolutely harm efforts to encourage more sustainable transportation"
[email protected]
www.theverge.com/column/86621...
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The great e-bike crackdown has begun
New Jersey just approved a wildly out-of-step new law that restricts all e-bikes, regardless of speed or power capabilities. Will other states follow?
https://www.theverge.com/column/866218/e-bike-crackdown
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Vineyard Wind has about 10 turbines left to complete. Now it can get back to working on them.
heatmap.news/sparks/viney...
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Trump Loses Another Case Against Offshore Wind
A federal judge in Massachusetts ruled that construction on Vineyard Wind could proceed.
https://heatmap.news/sparks/vineyard-wind-stop-work-order
18 days ago
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Emily Pontecorvo
Heatmap News
18 days ago
BREAKING: Construction on Vineyard Wind can proceed, according to a federal judge. That marks four losses in a row for the Trump administration against offshore wind. Read more from
@emilypont.bsky.social
:
heatmap.news/sparks/viney...
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Trump Loses Another Case Against Offshore Wind
A federal judge in Massachusetts ruled that construction on Vineyard Wind could proceed.
https://heatmap.news/sparks/vineyard-wind-stop-work-order
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Emily Pontecorvo
katie brigham
18 days ago
there's a new-ish player in the world of ultra-long duration (100+hour) battery storage: Noon Energy. last week, the startup announced the successful demo of its carbon-oxygen battery, which it hopes to commercialize as soon as next year to provide behind-the-meter power to data centers
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The Other Startup Promising 100 Hours of Cheap Energy Storage
Noon Energy just complete a successful demonstration of its reversible solid-oxide fuel cell.
https://heatmap.news/climate-tech/noon-energy-long-duration-battery
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The DOE revealed today that it cancelled some $30 billion in loan guarantees for Biden-era clean energy projects and is "revising" another $53 billion worth. Those numbers include public cancellations from last year like Grain Belt, but the remainder is ????
heatmap.news/sparks/83-bi...
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Chris Wright Is Overhauling $83 Billion of Loans. He Won’t Say Which Ones.
The Secretary of Energy announced the cuts and revisions on Thursday, though it’s unclear how many are new.
https://heatmap.news/sparks/83-billion-energy-loans
23 days ago
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Vineyard Wind is sounding the alarm that Trump's stop work order is getting in the way of its efforts to replace the defective blades that caused the 2024 broken blade fiasco, paradoxically creating new hazards. Scoop w/
@jael.bsky.social
heatmap.news/politics/tru...
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Scoop: Trump Administration Refuses to Allow Safety Fixes at Vineyard Wind
The offshore wind developer was in the process of completing necessary repairs when the administration issued its stop work order, according to court filings.
https://heatmap.news/politics/trump-vineyard-wind-repairs
24 days ago
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Would still love your recommendations on this if any come to mind!
add a skeleton here at some point
24 days ago
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Emily Pontecorvo
Steven J. Davis
24 days ago
“The most popular scope 3 models assume an entirely American supply chain. That doesn’t square with reality.” Deft summary of our latest paper by
@emilypont.bsky.social
in
@heatmap.news
:
heatmap.news/sustainabili...
Open access paper here:
www.nature.com/articles/s41...
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Another Way Companies Majorly Undercount Their Emissions
The most popular scope 3 models assume an entirely American supply chain. That doesn’t square with reality.
https://heatmap.news/sustainability/scope-3-emissions-undercount
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Emily Pontecorvo
Shannon Osaka
28 days ago
Scientists were frustrated by a piece in the Guardian earlier this week that seemed to call into question the science on microplastics in the body. I wrote about why researchers are certain microplastics are in the human body -- and what we still don't know:
www.washingtonpost.com/climate-envi...
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A scientist questioned new microplastics findings. Then other researchers fired back.
A prominent scientist criticized microplastics research methods. Others are defending the work.
https://www.washingtonpost.com/climate-environment/2026/01/17/microplastics-research-debate/
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What is the best journalistic article you recall reading about the AMOC?
25 days ago
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Emily Pontecorvo
Matt Zeitlin
29 days ago
when is green power really green, when is new power really new, when are data centers really sustainable
heatmap.news/energy/meta-...
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Why Meta’s New Nuclear Deals Pissed Off Even Some Pro-Nuclear People
“Additionality” is back.
https://heatmap.news/energy/meta-vistra-additionality
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As predicted by many, green hydrogen may be dead but the additionality debate lives on... Here's
@zeitlin.bsky.social
on Meta's deal with existing nuclear plants
heatmap.news/energy/meta-...
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Why Meta’s New Nuclear Deals Pissed Off Even Some Pro-Nuclear People
“Additionality” is back.
https://heatmap.news/energy/meta-vistra-additionality
29 days ago
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Emily Pontecorvo
jael holzman
29 days ago
News from me: Trump has lost yet again in court over the stop work order halting Coastal Virginia offshore wind The offshore wind sector is now 3/3 in court this week
@heatmap.news
#greensky
#climatesky
#energysky
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Offshore Wind Developers Are Now 3 for 3 Against Trump
A third judge rejected a stop work order, allowing the Coastal Virginia offshore wind project to proceed.
https://heatmap.news/sparks/coastal-virginia-offshore-wind-trump
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Emily Pontecorvo
Jeff St John
29 days ago
Great story by
@mariagallucci.bsky.social
on how Trump forcing all Department of Interior reviews of clean energy projects to get personal approval from DOI Secretary Doug Burgum has stifled 22GW of development in the midst of an energy crisis:
www.canarymedia.com/articles/cle...
#energysky
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22GW of renewables thwarted or in limbo under Trump ‘blockade’
An Interior Department memo is hampering wind and solar on public lands. It’s one of many federal actions slowing the build-out of cheap, clean energy.
https://www.canarymedia.com/articles/clean-energy/22gw-renewables-under-trump-blockade
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Emily Pontecorvo
Robinson Meyer
30 days ago
NEW: A federal judge has lifted Trump’s stop-work order for New York’s Empire Wind project, allowing construction to continue and dealing yet another legal blow to the president’s war on offshore wind
@jael.bsky.social
reports:
heatmap.news/sparks/new-y...
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New York’s Empire Wind Project May Resume Construction, Judge Says
The decision marks the Trump administration’s second offshore wind defeat this week.
https://heatmap.news/sparks/new-yorks-empire-wind-project-may-resume-construction-judge-says
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My sense is that when people advocate for not speaking of "climate change," they are pretty narrowly talking about not using it in certain political and policy contexts, and not implying that the words never be spoken or the issue be abandoned
30 days ago
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Emily Pontecorvo
Shannon Osaka
about 1 month ago
Interesting to see the Guardian's
@dpcarrington.bsky.social
weighing in on this. My take, as someone covering microplastics heavily for the past year (and currently sitting at a 200+ person conference with many of the scientists in question):
www.theguardian.com/environment/...
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‘A bombshell’: doubt cast on discovery of microplastics throughout human body
Exclusive: Some scientists say many detections are most likely error, with one high-profile study called a ‘joke’
https://www.theguardian.com/environment/2026/jan/13/microplastics-human-body-doubt
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2025 was bleak but someday we will have fusion at sea and SMRs underground
heatmap.news/climate-tech...
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The Wackiest Climate Tech Bets of 2025
Because you never know what’s going to take off.
https://heatmap.news/climate-tech/wackiest-climate-tech-investments-2025
about 2 months ago
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Day in the double-life of superstar
@jael.bsky.social
🙇🏻♀️
about 2 months ago
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Emily Pontecorvo
jael holzman
about 2 months ago
it’s probably really important for anyone reading about the offshore wind stuff today to know the military already spent many years addressing these issues and those reviews are well documented, can be filed in court
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Its not just energy demand putting pressure on utility bills. Many states and utilities are implementing wildfire mitigation and preparedness plans representing hundreds of millions in costs that "won’t hit utility customers for years,"
@robinsonmeyer.bsky.social
writes.
heatmap.news/energy/wildf...
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A Wildfire Is Coming for Electricity Bills
Forget data centers. Fire is going to make electricity much more expensive in the western United States.
https://heatmap.news/energy/wildfires-electricity-bills
about 2 months ago
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Emily Pontecorvo
Colin Kinniburgh
about 2 months ago
⚠️ It’s official! New York has repealed the “100-foot rule” subsidy for new gas hookups, joining five other states that have ended similar subsidies. Statement from Hochul:
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The House passed the SPEED Act today, which would make sweeping changes to NEPA. But a last minute tweak to safeguard Trump's meddling with previously-approved renewable energy projects pissed a lot of people off. A Senate deal won't be easy.
heatmap.news/sparks/speed...
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The House Just Passed Permitting Reform. Now Comes the Hard Part.
The SPEED Act faces near-certain opposition in the Senate.
https://heatmap.news/sparks/speed-act-passes-house
about 2 months ago
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Japanese investors getting into DAC
heatmap.news/carbon-remov...
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DAC Is Struggling in America, But It’s Big in Japan
With new corporate emissions restrictions looming, Japanese investors are betting on carbon removal.
https://heatmap.news/carbon-removal/dac-japan?next_url=%2Fcarbon-removal%2Fdac-japan
about 2 months ago
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Emily Pontecorvo
Zahra Hirji
about 2 months ago
“To shutter this facility is, frankly, a national security risk,” Kim Cobb told
@bloomberg.com
about NCAR, given its cutting-edge work on extreme weather and across fields including machine learning and AI. Story w/
@eroston.bsky.social
@willwwade.bsky.social
:
www.bloomberg.com/news/article...
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Trump Administration Aims to Dismantle Key Climate Research Hub
The US plans to dismantle the National Center for Atmospheric Research, a key climate-science hub in Boulder, Colorado, which the Trump administration says strayed from its mission decades ago by taki...
https://www.bloomberg.com/news/articles/2025-12-17/us-to-dismantle-key-research-agency-advancing-attack-on-climate?accessToken=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzb3VyY2UiOiJTdWJzY3JpYmVyR2lmdGVkQXJ0aWNsZSIsImlhdCI6MTc2NTk5OTAxNiwiZXhwIjoxNzY2NjAzODE2LCJhcnRpY2xlSWQiOiJUN0YwR0xLR1pBT00wMCIsImJjb25uZWN0SWQiOiJFMkUzODg2QzgzREM0NTUxOEVFM0M2MDRGN0ZBRTlGMyJ9.DtwclO2IMj1ULBz2ibDRhfjU97hXaKGbGWbl7Zfd2Uc
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Emily Pontecorvo
Alexandra Witze
about 2 months ago
Here's our reporting on the proposed dismantling of the jewel of US atmospheric science, @ncar-ucar.bsky.social. The plan is to break NCAR apart and disburse some parts to other locations (like the research aircraft fleet) and eliminate others.
www.nature.com/articles/d41...
🧪
#AGU25
#climate
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Trump team plans to break up ‘global mothership’ of climate science
Much of the National Center for Atmospheric Research’s non-climate portfolio will be dispersed, the White House says.
https://www.nature.com/articles/d41586-025-04134-w
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Fascinating new developments in geologic hydrogen from
@kbrigham.bsky.social
heatmap.news/climate-tech...
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There’s a New Color for Hydrogen: Orange
The startup Vema just signed a new offtake agreement to provide 36,000 tons of orange hydrogen per year for data centers.
https://heatmap.news/climate-tech/vema-orange-hydrogen?next_url=%2Fclimate-tech%2Fvema-orange-hydrogen
about 2 months ago
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New "foreign entity of concern" clean energy tax credit restrictions will kick in Jan 1, but the Trump admin has still not published guidance that was due in August, so nobody really knows yet what they'll need to do to adhere to them.
heatmap.news/politics/feo...
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Trump’s Missing Tax Rules
The president set an August deadline to deliver guidance for companies trying to qualifying for clean energy tax credits. Four months later — and two weeks before new rules are set to kick in — they’r...
https://heatmap.news/politics/feoc-rules-guidance
2 months ago
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ugh so many long features pubbed in the last week open in tabs on my browser hope i have time to read them eventually
2 months ago
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Out: bans on natural gas hookups or appliances In: bans on central air conditioners that can't do heating Once again, California is testing it out first.
heatmap.news/politics/cal...
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California’s Latest Climate Gambit: Turn Air Conditioners Into Heat Pumps
Cities across the state are adopting building codes that heavily incentivize homeowners to make the switch.
https://heatmap.news/politics/california-heat-pumps
2 months ago
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CBAM is coming Jan 1. Get caught up:
www.canarymedia.com/articles/cle...
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Europe’s world-first carbon tariff is coming. Here’s what to know.
The EU’s Carbon Border Adjustment Mechanism is part of a broader effort to decarbonize heavy industries in Europe and globally. It takes full effect Jan.…
https://www.canarymedia.com/articles/clean-industry/europe-cbam-carbon-tariff-imports
2 months ago
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Emily Pontecorvo
katie brigham
2 months ago
relatedly:
heatmap.news/climate-tech...
add a skeleton here at some point
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Emily Pontecorvo
James Temple
2 months ago
I did a lengthy interview with the CEO of Stardust, in which he walked back the solar geoengineering startup's testing and deployment plans a bit. The company also intends to release details about its proprietary particles early next year and expects to open a US office soon.
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How one controversial startup hopes to cool the planet
And why many scientists are freaked out about the first serious for-profit company moving into the solar geoengineering field.
https://www.technologyreview.com/2025/12/10/1129079/how-one-controversial-startup-hopes-to-cool-the-planet/
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Emily Pontecorvo
Richard Waite
2 months ago
Just remembered this other classic from 2005 😭
add a skeleton here at some point
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New: Key Senate Democrats told
@jael.bsky.social
they want a permitting deal that supports transmission and clean energy, and that the current House proposal, the SPEED Act, "does not meet that standard."
heatmap.news/politics/sch...
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Exclusive: Key Senate Democrats Oppose Permitting Bill
A trio of powerful climate hawks are throwing their weight against the SPEED Act.
https://heatmap.news/politics/schatz-whitehouse-heinrich-speed-act
2 months ago
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Hello! Do you have a friend or family member (a boomer in your life, perhaps?) who was looking into
#heatpumps
🔌⚡ and then wouldn't stop going on and on to you about the technology or trying to give you a physics lesson? Please DM me or respond here, I would like to talk to you!
2 months ago
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Permitting reform is back, and there's a lot of motivation on both sides to get a deal done — Trump's war on wind and solar, interest in AI leadership, energy affordability. The debate is impenetrable as ever, so I wrote this guide to help you (and myself tbh) follow it
heatmap.news/politics/per...
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Permitting Reform is Back. What Are We Even Talking About This Time?
Get up to speed on the SPEED Act.
https://heatmap.news/politics/permitting-reform-speed-act
2 months ago
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Emily Pontecorvo
jael holzman
2 months ago
My colleague
@emilypont.bsky.social
wrote THE explainer on the big “permitting reform” bill Republicans are trying to pass this Congress She really nails what the bill would do and why some cleantech people like it while many others really don’t I highly encourage all wonks to read
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Permitting Reform is Back. What Are We Even Talking About This Time?
Get up to speed on the SPEED Act.
https://heatmap.news/politics/permitting-reform-speed-act
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Emily Pontecorvo
katie brigham
2 months ago
permitting reform is on the table once again. with the SPEED act expected to come to a vote on the house floor in the coming weeks,
@emilypont.bsky.social
breaks down where the debate stands this time around
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Permitting Reform is Back. What Are We Even Talking About This Time?
Get up to speed on the SPEED Act.
https://heatmap.news/politics/permitting-reform-speed-act
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reposted by
Emily Pontecorvo
Colin Kinniburgh
2 months ago
I wrote this spring about an intriguing idea: Could utilities pay people to electrify their home with new appliances, instead of just swapping out old pipes?
nysfocus.com/2025/03/10/n...
@emilypont.bsky.social
profiled the woman who’s actually doing this, on her own, for ConEd. Wonderful piece:
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Meet Con Edison’s One-Woman Electrification Show
Julie Liu is converting gas customers to heat pumps, one home at a time.
https://heatmap.news/energy/coned-building-electrification
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