Gunnar Luderer
@gunnarenergyclima.bsky.social
Energy Researcher. Leader of Energy Systems Research at PIK. Professor of Global Energy Systems at TU Berlin. Working on strategies for a rapid transformation to climate-neutral energy systems.
https://www.pik-potsdam.de/members/luderer/
https://www.pik-potsdam.de/members/luderer/
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 👇
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...
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
November 13, 2025 at 12:13 AM
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 👇
Reposted by Gunnar Luderer
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...
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
November 12, 2025 at 3:04 PM
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...
www.pik-potsdam.de/en/news/late...
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.
November 12, 2025 at 11:05 PM
Reposted by Gunnar Luderer
🤡OIL DEMAND WILL KEEP RISING🤡
What are the IEA assumptions that make rising oil demand so improbable?
What are the IEA assumptions that make rising oil demand so improbable?
November 12, 2025 at 6:10 AM
🤡OIL DEMAND WILL KEEP RISING🤡
What are the IEA assumptions that make rising oil demand so improbable?
What are the IEA assumptions that make rising oil demand so improbable?
New very important analysis on the 1.5°C target based on the REMIND model 👇
🚨🚨🚨 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...
@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...
November 6, 2025 at 2:36 PM
New very important analysis on the 1.5°C target based on the REMIND model 👇
Reposted by Gunnar Luderer
⚡ 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
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
April 29, 2025 at 1:17 PM
⚡ 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
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
Reposted by Gunnar Luderer
#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
Mehr dazu im neuen #Szenarienreport2025 vom Kopernikus-Projekt Ariadne 👉 buff.ly/SSTJHC2
March 10, 2025 at 10:00 AM
#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
Mehr dazu im neuen #Szenarienreport2025 vom Kopernikus-Projekt Ariadne 👉 buff.ly/SSTJHC2
Reposted by Gunnar Luderer
Fun fact: iron & steel-making in China produces about 2x the total GHG emissions as China's entire transportation sector, and cement production is about equal to transportation. So while CO2 prices in China's ETS are expected to be modest, including these sectors under emissions caps is a big deal.
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
March 6, 2025 at 3:56 PM
Fun fact: iron & steel-making in China produces about 2x the total GHG emissions as China's entire transportation sector, and cement production is about equal to transportation. So while CO2 prices in China's ETS are expected to be modest, including these sectors under emissions caps is a big deal.
Reposted by Gunnar Luderer
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:
Im Folgenden ein paar schnelle Takes zu ein paar Highlights:
March 6, 2025 at 9:58 AM
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:
Im Folgenden ein paar schnelle Takes zu ein paar Highlights:
Reposted by Gunnar Luderer
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.
In the election today the extreme right AfD gained 3x more support from workers than the SPD.
February 23, 2025 at 7:18 PM
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.
In the election today the extreme right AfD gained 3x more support from workers than the SPD.
🚨 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
February 22, 2025 at 9:40 PM
🚨 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...
🚨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.
‼️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:
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
February 21, 2025 at 9:41 AM
🚨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.
🚨 If confirmed, horrible news for science-based policy advice: The IPCC WG3 - which deals with strategies for reaching climate goals - about to get defunded.
‼️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:
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
February 21, 2025 at 9:19 AM
🚨 If confirmed, horrible news for science-based policy advice: The IPCC WG3 - which deals with strategies for reaching climate goals - about to get defunded.
Reposted by Gunnar Luderer
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...
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
February 17, 2025 at 3:50 PM
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...
www.dw.com/de/muss-deut...
Exciting job opportunity in our energy transition lab @pik-potsdam.bsky.social 👇
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
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
February 13, 2025 at 4:54 PM
Exciting job opportunity in our energy transition lab @pik-potsdam.bsky.social 👇
Reposted by Gunnar Luderer
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
Read here: https://buff.ly/4hfcKhk
January 22, 2025 at 11:01 PM
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
Read here: https://buff.ly/4hfcKhk
Reposted by Gunnar Luderer
🚨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
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
January 14, 2025 at 10:17 AM
🚨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
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
Reposted by Gunnar Luderer
Germany's #Climate Action Law
National targets:
-Reduce GHG emissions by at least 65% by 2030 (over 1990)
-88% by 2040
-Net greenhouse gas neutrality by 2045
-Negative #emissions after 2050
factsheet update:
www.cleanenergywire.org/factsheets/g...
National targets:
-Reduce GHG emissions by at least 65% by 2030 (over 1990)
-88% by 2040
-Net greenhouse gas neutrality by 2045
-Negative #emissions after 2050
factsheet update:
www.cleanenergywire.org/factsheets/g...
January 13, 2025 at 10:29 AM
Germany's #Climate Action Law
National targets:
-Reduce GHG emissions by at least 65% by 2030 (over 1990)
-88% by 2040
-Net greenhouse gas neutrality by 2045
-Negative #emissions after 2050
factsheet update:
www.cleanenergywire.org/factsheets/g...
National targets:
-Reduce GHG emissions by at least 65% by 2030 (over 1990)
-88% by 2040
-Net greenhouse gas neutrality by 2045
-Negative #emissions after 2050
factsheet update:
www.cleanenergywire.org/factsheets/g...
Bemerkenswertes Interview von Ottmar #Edenhofer @pik-potsdam.bsky.social zu Klimaschutz und Wirtschaft. www.noz.de/deutschland-...
Ökonom Edenhofer: „Klimaschutz ist kein Luxusgedöns!“
Ökonom Ottmar Edenhofer warnt CDU vor Rückschritten beim Klimaschutz nach der Bundestagswahl: „Deutschland überlebt nicht als Industriemuseum“
www.noz.de
January 13, 2025 at 10:07 AM
Bemerkenswertes Interview von Ottmar #Edenhofer @pik-potsdam.bsky.social zu Klimaschutz und Wirtschaft. www.noz.de/deutschland-...
Reposted by Gunnar Luderer
1/ The German parliament was dissolved today after the failure of the "traffic light" government. What has the 🚦 achieved in terms of the energy transition? Here's a final update of the @diw.de #Ampelmonitor Energiewende in English! 🇩🇪 🔌↩️
Little 🧵 with a few graphs on key technologies 🔽
Little 🧵 with a few graphs on key technologies 🔽
DIW Berlin: Ampel-Monitor Energiewende (Monitor of the German
BLOG Overview Note on the graphs Explanations on share of renewable energy in the electricity sector Why "traffic light"? Energy targets of the German government - and what has been achieved The…
www.diw.de
December 27, 2024 at 11:47 AM
1/ The German parliament was dissolved today after the failure of the "traffic light" government. What has the 🚦 achieved in terms of the energy transition? Here's a final update of the @diw.de #Ampelmonitor Energiewende in English! 🇩🇪 🔌↩️
Little 🧵 with a few graphs on key technologies 🔽
Little 🧵 with a few graphs on key technologies 🔽
Reposted by Gunnar Luderer
13/ 🎙️ If you prefer a (German) soundtrack instead of interactive images: @aroth.bsky.social and I, with the support of @andreasloeschel.bsky.social & @gunnarenergyclima.bsky.social , discussed the government's energy transition balance in detail in episode #26 of the @diw.de podcast #fossilfrei.
DIW Berlin: 'fossilfrei' - der Energiewendepodcast des DIW Berlin
Folgen Die Energiewende erscheint oft kompliziert und unübersichtlich. Die Macher des "DIW-Monitor Energiewende", Alexander Roth und Wolf-Peter Schill, sortieren das für euch. Wir diskutieren, auch…
www.diw.de
December 27, 2024 at 11:47 AM
13/ 🎙️ If you prefer a (German) soundtrack instead of interactive images: @aroth.bsky.social and I, with the support of @andreasloeschel.bsky.social & @gunnarenergyclima.bsky.social , discussed the government's energy transition balance in detail in episode #26 of the @diw.de podcast #fossilfrei.
Latest German energy statistics allow an early peak on CO2 balance for 2024. Coal declines, but this along with changes in oil and gas use this will translate to a mere 15 MtCO2 decline relative to 2023 (own estimate). Germany needs twice as much, 30 MtCO2 per year, to reach its -65% goal in 2030.
#Renewables supplied 55% of electricity used in Germany in 2024
> #coal use down significantly
> almost no change for #natgas
> 1st full yr w/o #nuclear
> net power importer
www.cleanenergywire.org/factsheets/g... @janrosenow.bsky.social @drsimevans.carbonbrief.org @simone-peter.bsky.social
> #coal use down significantly
> almost no change for #natgas
> 1st full yr w/o #nuclear
> net power importer
www.cleanenergywire.org/factsheets/g... @janrosenow.bsky.social @drsimevans.carbonbrief.org @simone-peter.bsky.social
December 18, 2024 at 8:31 PM
Latest German energy statistics allow an early peak on CO2 balance for 2024. Coal declines, but this along with changes in oil and gas use this will translate to a mere 15 MtCO2 decline relative to 2023 (own estimate). Germany needs twice as much, 30 MtCO2 per year, to reach its -65% goal in 2030.
Oh wow! Clean and tidy GHG inventory data tables 👇. Thanks, @wflamb.bsky.social !
December 17, 2024 at 5:24 PM
Oh wow! Clean and tidy GHG inventory data tables 👇. Thanks, @wflamb.bsky.social !
Demand flexibility would be particularly important for Germany - given ambitious wind and solar build-out, and growing potential for flexible demands from heat pumps and electric cars. However, still way behind most other European countries regarding smart meter rollout. A costly policy failure!
December 16, 2024 at 11:11 AM
Demand flexibility would be particularly important for Germany - given ambitious wind and solar build-out, and growing potential for flexible demands from heat pumps and electric cars. However, still way behind most other European countries regarding smart meter rollout. A costly policy failure!
Reposted by Gunnar Luderer
Always wanted someone to do exactly that chart! Beautiful, isn't it?
December 16, 2024 at 10:59 AM
Always wanted someone to do exactly that chart! Beautiful, isn't it?