Gunnar Luderer | Lightnews

Gunnar Luderer @gunnarenergyclima.bsky.social · 5d

Limiting overshoot and returning back to below 1.5°C is still possible and worth fighting for. Carbon dioxide removal (CDR) is no longer a choice, but a necessity - so both deep fossil phase-out and negative emissions are absolutely essentially. Our science-based statement on the Paris targets 👇

PIK_climate @pik-potsdam.bsky.social · 5d

The road back to Paris: The world will likely exceed 1.5°C within the next decade. Science shows it’s still possible to return below this limit by century’s end. PIKs #Edenhofer, Rockström, @gunnarenergyclima.bsky.social, Kriegler on pathways back to safer levels.
www.pik-potsdam.de/en/news/late...

The road (back) to Paris: Science-based pathways to return below 1.5°C

12.11.2025 - The world is likely to exceed 1.5°C of global warming within the next decade, yet science shows that returning below this threshold by the end of the century remains physically possible. ...

www.pik-potsdam.de

Gunnar Luderer @gunnarenergyclima.bsky.social · 5d

Full report available here
www.iea.org/reports/worl...

Gunnar Luderer @gunnarenergyclima.bsky.social · 5d

Despite these assumptions, nuclear remains much more expensive in terms of cost per MWh and contributes much less clean power than wind and solar even in their current policies scenario with the least renewable energy ambition.

Gunnar Luderer @gunnarenergyclima.bsky.social · 5d

Very optimistic assumptions on investment costs for nuclear, assuming <= 5000 $/kW by 2035 for US and EU. Where do those come from? Recent projects (Flamanville, Hinkley Point, Olkiluoto, Vogtle) were more like 8000-15000 $/kW, so these assumptions seem quite doubtful.

Gunnar Luderer @gunnarenergyclima.bsky.social · 5d

Stunned to see the extremely bullish nuclear power deployment in @iea.org #WEO2025: +30% in under "current policies", i.e. a World without any further climate policies? This is hard to buy, given the poor track record of nuclear in past decades, with huge cost overruns and delay.

PIK_climate @pik-potsdam.bsky.social · 5d

The road back to Paris: The world will likely exceed 1.5°C within the next decade. Science shows it’s still possible to return below this limit by century’s end. PIKs #Edenhofer, Rockström, @gunnarenergyclima.bsky.social, Kriegler on pathways back to safer levels.
www.pik-potsdam.de/en/news/late...

The road (back) to Paris: Science-based pathways to return below 1.5°C

12.11.2025 - The world is likely to exceed 1.5°C of global warming within the next decade, yet science shows that returning below this threshold by the end of the century remains physically possible. ...

www.pik-potsdam.de

Dave Jones @cleanpowerdave.bsky.social · 6d

🤡OIL DEMAND WILL KEEP RISING🤡

What are the IEA assumptions that make rising oil demand so improbable?

Gunnar Luderer @gunnarenergyclima.bsky.social · 11d

New very important analysis on the 1.5°C target based on the REMIND model 👇

Neil Grant @neilgrant.bsky.social · 11d

🚨🚨🚨 NEW REPORT ALERT 🚨🚨🚨
@climateanalytics.org has a new report out today that I’m really excited about. It’s all about 1.5ºC...

▶️ Is overshooting 1.5ºC inevitable?
▶️ Can we still get temperatures back below 1.5ºC?
▶️ If so, how?

If you’re interested in our findings, buckle up for a mega thread...

Neil Grant @neilgrant.bsky.social · 11d

🚨🚨🚨 NEW REPORT ALERT 🚨🚨🚨
@climateanalytics.org has a new report out today that I’m really excited about. It’s all about 1.5ºC...

▶️ Is overshooting 1.5ºC inevitable?
▶️ Can we still get temperatures back below 1.5ºC?
▶️ If so, how?

If you’re interested in our findings, buckle up for a mega thread...

Philipp C. Verpoort @philippverpoort.bsky.social · Dec 11

📄 Heute erschienen: unser Report zur langfristigen Wettbewerbsfähigkeit energieintensiver Grundstoffe in DE und der Option des Imports grüner Vorprodukte.

🔗 ariadneprojekt.de/publikation/...

Zusammenfassung der Kernergebnisse im 🧵 … 1/7

William F. Lamb @wflamb.bsky.social · Dec 17

Here is a first version: github.com/lambwf/Tidy-...

Any feedback welcome!

github.com

Clara Bachorz @clarabachorz.bsky.social · Apr 29

⚡ New paper in @natcomms.nature.com on decarbonizing the hard-to-electrify sectors!

Which abatement option is most cost-efficient for the steel, cement, chemical, or long-distance transport sectors? In this paper, we explore the mitigation landscape of each sector.

🔗 Article: rdcu.be/ejLI0

Exploring techno-economic landscapes of abatement options for hard-to-electrify sectors

Nature Communications - Abatement options for hard-to-electrify sectors (e.g., steel, aviation) face uncertainty in future costs and feasibility. This techno-economic analysis shows that despite...

rdcu.be

Kopernikus-Projekt Ariadne @ariadneprojekt.bsky.social · Mar 10

#Ariadne-Forscher @gunnarenergyclima.bsky.social vom @pik-potsdam.bsky.social zu den notwendigen #Investitionen für eine erfolgreiche #Energiewende, die Deutschlands #Wettbewerbsfähigkeit sichert.

Mehr dazu im neuen #Szenarienreport2025 vom Kopernikus-Projekt Ariadne 👉 buff.ly/SSTJHC2

Jesse D. Jenkins @jessedjenkins.com · Mar 6

China’s government has plans to add steel, aluminum, and cement producers to the set of entities covered by emissions cap and trade schemes by the end of 2025 www.bloomberg.com/news/article...
🔌💡

China Vows to Expand Carbon Market in Push to Control Emissions

China’s top leaders pledged to expand the nation’s emissions trading system to cover more industries amid a wider push to accelerate efforts to limit greenhouse gas pollution.

www.bloomberg.com

Wolf-Peter Schill @wpschill.bsky.social · Mar 6

Eine sehr umfassende Modellierungsstudie, zu einem guten Teil auf Basis offener Modelle 👍 Gut gemacht, @gunnarenergyclima.bsky.social und @nworbmot.bsky.social !👏
Im Folgenden ein paar schnelle Takes zu ein paar Highlights:

Isabella M. Weber @isabellamweber.bsky.social · Feb 23

Once upon a time, the social democrats were the workers’ party in Germany.

In the election today the extreme right AfD gained 3x more support from workers than the SPD.

Gunnar Luderer @gunnarenergyclima.bsky.social · Feb 22

(3) Very difficult to see how timeline and process of this report can be salvaged. The IPCC assessments on mitigation provide essential guidance for climate policy processes, and will be crucial to informing the next global stock take and subsequent climate negotiations on emission reduction targets

Gunnar Luderer @gunnarenergyclima.bsky.social · Feb 22

(2)This stop-work order comes on the eve of an IPCC plenary scheduled for next week. Hardly a coincidence: That plenary is supposed to approve the outline for the next assessment next IPCC report on climate change mitigation developed by Kate Calvin and team together with dozens of other scientists.

Gunnar Luderer @gunnarenergyclima.bsky.social · Feb 22

(1) Kate is an absolutely outstanding scientist who has made many essential contributions to climate science, such as transformation pathways towards climate stabilization. I had the privilege to work with her on several projects. So heartbreaking to see her curtailed in this way.

Gunnar Luderer @gunnarenergyclima.bsky.social · Feb 22

🚨 Now CCN-official 🚨 Trump issues stop-work-order to NASA chief scientist #KateCalvin, who is also co-chair of the IPCC's working group in charge of the next assessment on climate change mitigation. This is brutal, on so many levels. edition.cnn.com/2025/02/21/c...

Trump bars federal scientists from working on pivotal global climate report | CNN

The Trump administration told US government scientists working on a vital global climate report to stop their work – the president’s latest move to withdraw the US from global climate action and resea...

edition.cnn.com

Gunnar Luderer @gunnarenergyclima.bsky.social · Feb 21

🚨Die von den USA finanzierte Leitung der Weltklimarat (IPCC) Arbeitsgruppe 3, die sich mit Klimaschutzstrategien beschäftigt, ist massiv unter Beschuss. Das hat dramatische Auswirkungen auf die wissenschaftliche Grundlage der Klimapolitik weltweit. Ein dunkelschwarzer Tag für die Klimaforschung.

Katharine Hayhoe @katharinehayhoe.com · Feb 21

‼️The US-based @ipcc.bsky.social technical support unit (TSU) for Working Group 3 Co-Chairs has been terminated, and the US won’t be attending next week’s IPCC meeting where the AR7 chapter outlines will be approved.

More by @afreedma.bsky.social here:

Scoop: U.S. delegation pulled from key U.N. climate science meeting

The IPCC meeting in China is slated to determine the content in the group's next series of reports.

www.axios.com

Gunnar Luderer @gunnarenergyclima.bsky.social · Feb 21

🚨 If confirmed, horrible news for science-based policy advice: The IPCC WG3 - which deals with strategies for reaching climate goals - about to get defunded.

Katharine Hayhoe @katharinehayhoe.com · Feb 21

‼️The US-based @ipcc.bsky.social technical support unit (TSU) for Working Group 3 Co-Chairs has been terminated, and the US won’t be attending next week’s IPCC meeting where the AR7 chapter outlines will be approved.

More by @afreedma.bsky.social here:

Scoop: U.S. delegation pulled from key U.N. climate science meeting

The IPCC meeting in China is slated to determine the content in the group's next series of reports.

www.axios.com

Katharine Hayhoe @katharinehayhoe.com · Feb 21

‼️The US-based @ipcc.bsky.social technical support unit (TSU) for Working Group 3 Co-Chairs has been terminated, and the US won’t be attending next week’s IPCC meeting where the AR7 chapter outlines will be approved.

More by @afreedma.bsky.social here:

Scoop: U.S. delegation pulled from key U.N. climate science meeting

The IPCC meeting in China is slated to determine the content in the group's next series of reports.

www.axios.com

PIK_climate @pik-potsdam.bsky.social · Feb 17

Ist #Klimaschutz für die schlechte Wirtschaft verantwortlich? Nein, so PIKs @gunnarenergyclima.bsky.social: "Die Probleme der deutschen Wirtschaft sind von struktureller Natur und sie sind tieferliegend." Die Wirtschaft müsse die Chancen der "grünen Wende" aktiv annehmen.
www.dw.com/de/muss-deut...

Muss Deutschland zwischen Klima und Wirtschaft wählen? – DW – 17.02.2025

Im Wahlkampf zur vorgezogenen Bundestagswahl werden Stimmen laut, die den Klimaschutz im Namen von Wirtschaftsinteressen zurückdrehen wollen, obwohl Fachleute davor waren. Gibt es denn das eine nur oh...

www.dw.com

Gunnar Luderer @gunnarenergyclima.bsky.social · Feb 13

Exciting job opportunity in our energy transition lab @pik-potsdam.bsky.social 👇

Falko Ueckerdt @falkoueckerdt.bsky.social · Feb 10

Job: Circularity & industry transformation

Do you want to learn about material flow analyses and modeling of transformation scenarios?

@pik-potsdam.bsky.social is a renowned institute with scientific and real-world impact - and a beautiful location near Berlin

All info here: tinyurl.com/24udxdkv

Falko Ueckerdt @falkoueckerdt.bsky.social · Feb 10

Job: Circularity & industry transformation

Do you want to learn about material flow analyses and modeling of transformation scenarios?

@pik-potsdam.bsky.social is a renowned institute with scientific and real-world impact - and a beautiful location near Berlin

All info here: tinyurl.com/24udxdkv

Gunnar Luderer @gunnarenergyclima.bsky.social · Feb 3

Sorry, but your electricity prices are just totally off. Households currently pay around 30 ct/kWh (see e.g. www.zeit.de/wirtschaft/e...), and for industry electricity demand it is much lower. If some consumers
still pay higher prices, it's a legacy effect from the gas crisis, not renewables.

Energiemonitor: Schafft Deutschland die Energiewende?

Wo gehen neue Windräder in Betrieb? Woher kommt der Strom? Reicht das Gas für den Winter? Der komplett überarbeitete ZEIT-ONLINE-Energiemonitor gibt Antworten.

www.zeit.de

Carbon Brief @carbonbrief.org · Jan 22

NEW – EU’s solar and wind growth pushes fossil-fuel power to lowest level in 40 years | @mollylempriere.carbonbrief.org

Read here: https://buff.ly/4hfcKhk

EU electricity generation from coal, gas, wind and solar, terawatt hours, 1990-2024. Source: Ember.

Adrian Odenweller @adrianodenweller.bsky.social · Jan 14

🚨New Paper and Policy Brief🚨

How has green hydrogen developed recently? How much hydrogen is needed for 1.5°C? And what are plausible future pathways?

In a new Nature Energy study, we look at these questions.

🔗Article: https://buff.ly/3WeOh3G
🔗Policy Brief: https://buff.ly/3C2F6wm

#EnergySky

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