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Glen Peters

@glenpeters.bsky.social

25K followers 290 following 1.8K posts

Energy, emissions, & climate CICERO Center for International Climate Research, Oslo, Norway https://cicero.oslo.no/en/employees/glen-peters

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Environmental science 41%

Economics 22%

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Glen Peters @glenpeters.bsky.social · Nov 13

📢Global Carbon Budget 2024📢

Despite some predicting a peak in global fossil CO2 emissions, we estimate growth of 0.8% [-0.3% to 1.9%] in 2024. Maybe a peak next year?

Is it all bad news, or can we find some good news?

essd.copernicus.org/preprints/es...

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Glen Peters @glenpeters.bsky.social · 15h

Wow, thanks for finding that. I had sort of forgotten about it. I have been looking for an article that summarises these issues. I was looking in the wrong place...

Ketan Joshi @ketanjoshi.co · 17h

a medal for @glenpeters.bsky.social, who in 2017 correctly cautioned against pre-emptive celebration about peak emissions in China

www.climatechangenews.com/2017/03/31/c...

Have Chinese CO2 emissions really peaked?

We are really bad at predicting Chinese emissions. Why do we think we know what happens next?

www.climatechangenews.com

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Reposted by Glen P. Peters

Ketan Joshi @ketanjoshi.co · 17h

a medal for @glenpeters.bsky.social, who in 2017 correctly cautioned against pre-emptive celebration about peak emissions in China

www.climatechangenews.com/2017/03/31/c...

Have Chinese CO2 emissions really peaked?

We are really bad at predicting Chinese emissions. Why do we think we know what happens next?

www.climatechangenews.com

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Glen Peters @glenpeters.bsky.social · 19h

🤣

Reposted by Dominik Wiedenhofer

Glen Peters @glenpeters.bsky.social · 21h

Linking existing models to extend energy system & integrated assessment analysis is increasingly common practice, but little attention has been paid to the details, the trade-offs, & the interpretation of the interlinked model system.

Look, no figures!

www.sciencedirect.com/science/arti...

Model linking for low-carbon transitions: Technical and conceptual challenges and best practices

Linking existing models to extend energy system and integrated assessment analysis is an increasingly common practice. Despite this, and unlike in the…

www.sciencedirect.com

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Glen Peters @glenpeters.bsky.social · 1d

Will the podcast become available at other places. I use AntennaPod and noticed it is not (yet) available. I can also survive with Spotify... (not sure how these podcast subscription things work across platforms).

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Glen Peters @glenpeters.bsky.social · 1d

The paper is one of the Environmental Research Letters highlights for 2024.
iopscience.iop.org/journal/1748...

Not sure if any of the authors other than @hmcjeon.bsky.social hang out here?

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Anniversary Collections and Highlights - Environmental Research Letters - IOPscience

iopscience.iop.org

Glen Peters @glenpeters.bsky.social · 1d

A Maximum Sectoral Effort "can reduce Carbon Dioxide Removal (CDR) by >50% globally, increase [the] role of the land sink in storing carbon, & more evenly distribute CDR contributions & associated side-effects across regions compared to CO2 pricing alone"

iopscience.iop.org/article/10.1...

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A figure showing greater reductions compared to a co2 price in the Max Sector Effort, particularly for sectors like food and transport.

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Glen Peters @glenpeters.bsky.social · 5d

Not sure about that (left) and coal generation is done somewhat (right). Figures from here: robbieandrew.github.io/china/

(But yes, China is still building coal power plants)

Glen Peters @glenpeters.bsky.social · 5d

The difference between production and consumption is what China exports on a net basis. So it is important, not dominant. But these estimates are not near real time, so may not get recent dynamics. I think it is mainly that energy use is growing faster than anticipated.

Glen Peters @glenpeters.bsky.social · 5d

Yes, probably a mix of all these factors. The point being the electricity is dynamic. It is not just a simple displacement from industry to electricity. There will be new uses, rebound effects, etc, all wrapped in together.

Glen Peters @glenpeters.bsky.social · 5d

For interest, electricity has grown, while industry has levelled. That makes sense.

I am saying that electricity has grown even faster than assumed.

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Glen Peters @glenpeters.bsky.social · 5d

I am questioning the "surely"... bsky.app/profile/glen...

Glen Peters @glenpeters.bsky.social · 5d

Yes, you would think. My hypothesis would be that electricity has grown faster than many expected, hence solar/wind did not account for the annual increment in energy use. Hence no peak.

Intuitively you are correct, but maybe our intuition has led us astray...

Glen Peters @glenpeters.bsky.social · 5d

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Glen Peters @glenpeters.bsky.social · 6d

While the CO2/Energy (shift to renewables) has continued in China, Energy/GDP (energy efficiency, structural change) has basically stopped. Maybe this is because of electrification?

In any case, the changes in CO2/GDP in the last 10 years are very disappointing (hence no peak).

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Glen Peters @glenpeters.bsky.social · 6d

We thought the growth in solar and wind was enough to cover the annual increment in energy in 2015, but total energy grew even faster.

After 10 years, maybe solar and wind have caught up again (CO2/Energy improving)?

Time will tell.

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Glen Peters @glenpeters.bsky.social · 6d

Why didn't Chinese fossil CO2 emissions peak in 2013?

It looked like Chinese emissions might peak in 2013, after declines in 2014 & 2015, but since then, improvements in the CO2 efficiency of the economy slowed significantly.

CO2 will peak if efficiency improvements return.

See ALT text.

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The figure is a simplified Kaya Identity. The bars are the contributions to growth from GDP, Energy/GDP, CO2/Energy, and when you add the bars together you get the black dot, CO2 growth. For a given GDP, if the improvements in Energy/GDP and CO2/Energy are greater than the GDP growth, then emissions go down.

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Glen Peters @glenpeters.bsky.social · 6d

😆

Glen Peters @glenpeters.bsky.social · 6d

For what it is worth, EDGAR v10 has 0.52% up in 2024, including leap year adjustment.

Reposted by Daniela Gabor, Glen P. Peters, Graeme S. Cumming , and 6 more Daniela Gabor, Glen P. Peters, Graeme S. Cumming, Alistair Munro, Benjamin Braun, Leonhard Dobusch, John Hogan, Étienne Espagne, Matthias Schnetzer

Gregor Semieniuk @gregorsemieniuk.bsky.social · 6d

🚨NEW PAPER🚨
We all know the 2022 energy price shock fueled the cost of living crisis. It also caused a profit bonanza for the very rich. We show the US reaped the largest profits ($377bn) of any country. 50% went to the richest 1%, only 1% to the bottom 50%. A🧵 www.sciencedirect.com/science/arti...

River or sankey diagram showing the allocation of profits from global oil and gas companies to quantiles of the US wealth size distribution via financial system intermediaries, such as asset managers, and categories of ultimate beneficiaries, such as business owners, pension funds and shareholders in listed companies. The scale is hundreds of billions of US dollars, and ultimately 50.4% of profits reaching the US personal wealth distribution go to the richest 1% of households.

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Glen Peters @glenpeters.bsky.social · 6d

GCB has a leap year adjustment, not sure of IEA. Not at laptop, so can't do direct comparison.

Glen Peters @glenpeters.bsky.social · 6d

Well, depending on dataset. I think CM is the only one with 2024 down.

Glen Peters @glenpeters.bsky.social · 6d

There is a lot of talk about a peak in Chinese fossil CO2 emissions.

Carbon Monitor already has estimated a decline in Chinese CO2 in 2024 (last year) of -0.44%.
carbonmonitor.org/variation

The Global Carbon Budget has a 0.7% increase in 2024.

Across two datasets, we don't know if up or down!

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Reposted by Valerie M. Delmotte, Glen P. Peters, Sonia I. Seneviratne , and 1 more Valerie M. Delmotte, Glen P. Peters, Sonia I. Seneviratne, Diane E. Pataki

IPCC @ipcc.bsky.social · 7d

📣 Attention: Early-career researchers from developing countries & countries in transition!

Are you interested in becoming a Chapter Scientist and supporting author teams for #IPCC’s Seventh Assessment Report?

Apply by 18 Oct 2025

🔗 www.ipcc.ch/2025/10/07/c...

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Glen Peters @glenpeters.bsky.social · 8d

"It is the model with the most scenarios that has the largest influence on 1.5°C scenario findings. Individual studies have only a small or negligible impact on most findings," says @idasogn.bsky.social

cicero.oslo.no/en/articles/...

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Glen Peters @glenpeters.bsky.social · 10d

It is possible to make narratives where it makes sense. Maybe technology develops and we have scalable free fusion in 50 years, and so the overshoot part is easy. I just think it is more relevant to look at the consequences of 2.5C, then look at what is different going from 2.5 to 2.0C.

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