Danny Cullenward

Danny Cullenward

@ghgpolicy.org

Forensic climate economist and lawyer • The carbon accounting canary in your climate policy coal mine

13.9K followers1.7K following1.8K posts

Danny Cullenward reposted

It's an honor to be selected as a winner of the National Academies Eric and Wendy Schmidt Awards for Excellence in Science Communications (@scicommexcellence.nationalacademies.org)! Learn more: www.nationalacademies.org/news/nationa...

SciComm Excellence@scicommexcellence.nationalacademies.org

Congratulations to the 2026 winners of the National Academies Eric and Wendy Schmidt Awards for Excellence in Science Communications given by @nationalacademies.org in partnership with @schmidtsciences.bsky.social! Learn more about the winners: www.nationalacademies.org/news/nationa... #scicomm

Danny Cullenward reposted

"Bay Area Rapid Transit (BART)... is considering cutting 70% of its service and closing up to 15 of 50 stations, some 30%. Caltrain, the area’s leading local commuter rail system, could discontinue weekend service and shutter up to a third of its stations."

motherjones.comAmerica’s billionaire capital is poised to gut public transitVoters in the San Francisco Bay Area are split on a measure to rescue local transit. Disabled and low-income residents’ mobility is on the line.

Danny Cullenward reposted

Full obstruction : no agreement on budget and timeline for #IPCC AR7

Despite concerted efforts to find paths to consensus, the session was suspended without agreement on the timeline for the remainder of the Seventh Assessment Cycle. ➡️ enb.iisd.org/intergovernm... #IPCC

Danny Cullenward reposted

Stuff like this is why the Canadian political establishment is (correctly, IMO) assuming that Democrats can NOT be trusted to return the bilateral relationship to the status quo ante going forward.

Sen. Adam Schiff@schiff.senate.gov

My first stop was Alberta, the only province not boycotting Californian wines. I spoke to provincial leaders about the importance of the Canadian market to California farmers and the importance of continuing close collaboration on dairy, beef and energy trade.

This is a great figure for all your normie friends, climate people.

John Bistline@bistline.bsky.social

Nepal passed 5% battery electric vehicle share in August 2021 and is at 75%. The U.S. passed 5% in October 2022 and is at 6%.

Danny Cullenward reposted

I've just learned that Gil Masters, a pioneering energy thinker, a brilliant teacher, and a zany, creative, humble man, has passed away. Gil taught clean energy to thousands over half a century, with the deep-seated conviction that anyone could understand energy. I will miss him deeply.

I was wondering what the latest numbers would look like, as I think a lot of us have seen interconnection queue results from the last decade or so that are dominated by renewables — but Kevin shows that MISO's queue is now dominated by gas.

Kevin J. Kircher@kevinjkircher.com

I wrote about how BAAJA, the federal permitting bill, might impact the buildout of power plants. I looked at the midwest transmission grid operator's updated interconnection queue, which MISO overhauled in 2024, as a leading indicator of what people are trying to build. TL;DR: It's mostly gas.

View full thread

Main take-away for me is that the interconnection queues look a lot more fossil-heavy now than they did across the full timeframe over which LBNL did its analysis. Or, in simpler terms, building everything faster could lead to adding more gas than renewable generation.

On top of that, one also has to consider generation being built for off-grid data centers that don't interconnect. Some of that may be renewable as well, but plenty of big projects are reported to designed with only fossil gas. Does anyone know a good data source for off-grid projects?

I was wondering what the latest numbers would look like, as I think a lot of us have seen interconnection queue results from the last decade or so that are dominated by renewables — but Kevin shows that MISO's queue is now dominated by gas.

Kevin J. Kircher@kevinjkircher.com

I wrote about how BAAJA, the federal permitting bill, might impact the buildout of power plants. I looked at the midwest transmission grid operator's updated interconnection queue, which MISO overhauled in 2024, as a leading indicator of what people are trying to build. TL;DR: It's mostly gas.

Here's a similar analysis Kevin did for PJM, where the interconnection queue is again dominated by gas.

Kevin J. Kircher@kevinjkircher.com

Not sure people realize how much gas-fired electricity generation US developers are planning to bring online. PJM's updated interconnection queue, for example, is 71% gas by capacity and 73% gas by likely energy generation. And this is *electricity*; the other 82% of final energy is ~all fossil.

Danny Cullenward reposted

Energy pals, what are your favorite ideas to - *without* passing regulation that requires a 60-vote Senate supermajority - a) either speed up electricity transmission buildout, or alleviate the need for transmission buildout (e.g. efficiency, DERs), or b) speed up buildout of renewable generation?

Danny Cullenward reposted

Danny Cullenward reposted

The Senate will take up permitting reform in early November, so it's time to grapple w what Dem negotiators gave up to streamline permitting for clean energy. @jeremysymons.bsky.social finds that the provisions won by the fossil & tech lobbies would cause lasting damage to our climate & clean air.

substack.comThis is not the permit reform deal that was advertisedDangerous provisions would hand Trump broad powers to block future presidents from acting on climate change and restoring the Clean Air Act

Danny Cullenward reposted

Just did some number crunching using latest (Oct 1) ECMWF seasonal data, and I must say that I've never seen such high predictive confidence in a very wet California winter. This is a truly extraordinary forecast amid a record-strength El Niño event. [Thread: please read to end.]

I thought this might be an exaggeration, but no! Despite all the talk of technology neutrality, it appears the permitting reform proposal would weaponize claims for federal damages — but in practice, only for fossil fuels.

Erik Schlenker-Goodrich@riogranderift.bsky.social

Insightful legal analysis of a highly problematic component of the Senate permitting deal (Sec. 1402) highly touted by bill proponents as a solution to Trump's War on Renewables but is in fact a major gift to all developers—in particular fossil fuels—that will hobble a future POTUS' climate action.

View full thread

Update: I had a conversation that convinced me it wasn't responsible to suggest the fossil fuel industry wrote this provision. The identity of the party that wrote it or pushed for it doesn't change the problem, but I shouldn't have made any assumptions about who that was.

I thought this might be an exaggeration, but no! Despite all the talk of technology neutrality, it appears the permitting reform proposal would weaponize claims for federal damages — but in practice, only for fossil fuels.

Erik Schlenker-Goodrich@riogranderift.bsky.social

Insightful legal analysis of a highly problematic component of the Senate permitting deal (Sec. 1402) highly touted by bill proponents as a solution to Trump's War on Renewables but is in fact a major gift to all developers—in particular fossil fuels—that will hobble a future POTUS' climate action.

View full thread

Meanwhile, because the baseline for renewables is mostly delay or rejection under Trump, it's not clear there's a plausible path to remedies for renewables that get delayed under a future administration. (Not advocating otherwise; this is bad policy. Just noting the asymmetry.)

I thought this might be an exaggeration, but no! Despite all the talk of technology neutrality, it appears the permitting reform proposal would weaponize claims for federal damages — but in practice, only for fossil fuels.

Erik Schlenker-Goodrich@riogranderift.bsky.social

Insightful legal analysis of a highly problematic component of the Senate permitting deal (Sec. 1402) highly touted by bill proponents as a solution to Trump's War on Renewables but is in fact a major gift to all developers—in particular fossil fuels—that will hobble a future POTUS' climate action.

Renewables won't benefit from this anytime soon if ever, thanks to the 5-year historical baseline period. Under Trump, all fossil fuel projects are approved and most renewables are delayed (or worse). Four years of that and any rejection or delay of fossil permits will look like "disparate impact"!

I don’t think this basic fact gets nearly enough attention in US political analysis. Many if not most prominent US environmentalists worked with pro-climate conservatives and Republicans — so much that insiders joked about “vitamin R” as part of a healthy approach to climate policy.

Aaron Huertas@aaronhuertas.bsky.social

Also did plenty of work with conservatives who accepted the science on climate, there was just the small issue of them losing power in their coalition.

View full thread

It’s not clear to me that this has weakened their influence on federal climate policy or in national media, however, where the perception of their relevance to anything right of the political center persists (despite all evidence to the contrary).

I don’t think this basic fact gets nearly enough attention in US political analysis. Many if not most prominent US environmentalists worked with pro-climate conservatives and Republicans — so much that insiders joked about “vitamin R” as part of a healthy approach to climate policy.

Aaron Huertas@aaronhuertas.bsky.social

Also did plenty of work with conservatives who accepted the science on climate, there was just the small issue of them losing power in their coalition.

The simple fact is that these conservatives and Republicans lost all power **within** their coalition. Nobody else stopped listening to them or their ideas; they simply ceased to have any standing or influence as a constituency within the Republican party.

This is a good thread. I would add that a similar dynamic unfolded with the Inflation Reduction Act — white papers with strong claims about expected outcomes, based on equally strong assumptions about technology costs and policy implementation.

Kevin J. Kircher@kevinjkircher.com

Think tanks will soon start releasing non-peer-reviewed modeling of how the permitting bill might affect pollution, if they haven't already. Most will secretly have lots of ideology-driven thumbs on scales. One big way to tip the scales is by ignoring pollution associated with oil and gas exports.

To be clear, I'm not hating on the IRA or the people who supported it. But I am a former energy modeler and the primary reason I drifted away from that field is because the feedback loop between model-based claims and policy applications is more a political than scientific matter.