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Felix Schreyer

@fschreyer.bsky.social

Energy systems researcher at the Potsdam Institute for Climate Impact Research (PIK). Working on climate mitigation scenarios for Germany and Europe, IAMs, renewables, hydrogen, Power-to-X.

35 Posts229 Follower 108 Folgt

Felix Schreyer @fschreyer.bsky.social · 5mo ago

While EU climate policy is all about "getting to net-zero", there is less talk about the phase-out of fossil fuels. Time to change that! Join our webinar on EU scenarios to a (full) phase out of fossil fuels! newpathways.eu/from-net-zer... It is based on our paper: www.nature.com/articles/s41...

From Net-Zero to Zero-Fossil in Transforming the EU Energy System | NEWPATHWAYS

newpathways.eu

Felix Schreyer @fschreyer.bsky.social · 8mo ago

Our new study an EU #fossil #phase-out is out in @natcomms.nature.com. www.nature.com/articles/s41... Afaik, this is the first #IAM study investigating a complete fossil phase-out. How much do we need to reduce fossils for the EU 2050 goal? And would even a full fossil phase-out be possible?

From net-zero to zero-fossil in transforming the EU energy system - Nature Communications

This scenario study investigates how the EU net-zero target can be reached with varying levels of residual fossil fuels. Reducing fossils by only 90% relies on substantial carbon storage, while a full...

nature.com

Felix Schreyer @fschreyer.bsky.social · 9mo ago

Study on lowest still achievable global warming by @climateanalytics.org featuring our integrated assessment model REMIND from @pik-potsdam.bsky.social and my colleagues Fabrice Lécuyer, Chris Gong and @gunnarenergyclima.bsky.social.

Neil Grant@neilgrant.bsky.social · 9mo ago

🚨🚨🚨 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...

David Roberts @volts.wtf · 10mo ago

Australia's grid operator has a clear line of sight to 100% renewables. There's nothing unknown or exotic required. It'll be fun when the first large/major economies start hitting the goal. Too bad the US is likely to be at the rear of the pack.

As coal fades, Australia looks to realize dream of 100% renewable…

The country’s grid operator says shifting from coal to clean power is not only possible but inevitable. The work there could provide a road map for other…

canarymedia.com

Jesse D. Jenkins @jessedjenkins.com · 11mo ago

Two new papers find renewables are good insurance (they stabilize electricity price volatility in welfare improving ways) www.nature.com/articles/s41... www.sciencedirect.com/science/arti... 🔌💡

Power price stability and the insurance value of renewable technologies - Nature Energy

Increasing solar photovoltaic and wind generation capacity beyond European 2030 targets could make electricity prices more stable, with reductions in sensitivity to fluctuations in the price of natura...

nature.com

Ed Zitron @edzitron.com · last yr.

You're so close

r/ChatGPTPro
u/vurto • 28d
If ChatGPT is not consistently dependable, how are we suppose to use it for actual work?
Discussion
It's behavior and results can randomly change due to some OpenAl tweaking that's opaque.
On some days it can't even keep track of a fresh chat, it can't do calculations, it can't sort through a chat to extract relevant information, and when it's suppose to refer to source material in a PDF, it doesn't.
All because OpenAl trained it for fluency and basically to simulate whatever it can for user satisfaction.
I can use it for general chats, philosophical stuff, therapy, but nothing serious. I'm pro Al, but I approach it with skepticism knowing it's undependable (as I do with anything I read).
And prompts can be interpreted/executed differently across users' own interaction with their Als so it's not truly scalable.
How does the business world / leaders expect staff to adopt Al if it's not consistently dependable? It doesn't even calculate like a calculator. If the internet start claiming 2+2=5, that's what it'll answer with.
I'd use it for hobbies and pet projects but I can't imagine using it for anything "mission critical".

Wolfgang Blau @wblau.bsky.social · last yr.

Staggering figures. Source: www.nytimes.com/2025/07/28/b... “Nepal, The Country Where 76% of Cars Sold Are Electric”

Tom Brown @nworbmot.bsky.social · last yr.

This graph from @fschreyer.bsky.social and @pik-potsdam.bsky.social colleagues illustrates the dilemma nicely "LeastCost" path involved scaling up CCS faster than historical precedents. Avoiding fossil-CDR ("FosFree") means doing same for e-fuels. www.researchsquare.com/article/rs-5...

Kopernikus-Projekt Ariadne @ariadneprojekt.bsky.social · last yr.

#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

Christoph Bautz @christophbautz.bsky.social · last yr.

Jetzt erst recht: #StandWithUkraine! Trump wendet sich von der Ukraine ab – wir nicht! Setze mit Tausenden ein Zeichen der Solidarität und Unterstützung. Gemeinsam für Freiheit, Demokratie & ein starkes Europa! 🗓️ Sonntag, 9. März, 17 Uhr 📍 Brandenburger Tor, Berlin

Kopernikus-Projekt Ariadne @ariadneprojekt.bsky.social · last yr.

#Ariadne-Report kalkuliert Pfade zur #Klimaneutralität 2045 in Deutschland: Der Zusatzaufwand der #Transformation lässt sich durch kosteneffizienten #Klimaschutz je nach Szenario auf jahresdurchschnittlich 16 - 26 Mrd. Euro bis 2045 begrenzen, 0,4 - 0,7 Prozent der heutigen #Wirtschaftsleistung.

PIK_climate @pik-potsdam.bsky.social · last yr.

Investitionen für #Klimaneutralität 2045 in 🇩🇪 werden zum Großteil durch Minderausgaben für Gas/Öl/Kohle ausgeglichen. Zusatzaufwand bei kosteneffizienter Politik 0,4-0,7% des aktuellen BIP. @ariadneprojekt.bsky.social Ariadne-Szenarienreport mit Beteiligung PIK. 👇 www.pik-potsdam.de/de/aktuelles...

Kopernikus-Projekt Ariadne @ariadneprojekt.bsky.social · last yr.

Viele Monate haben #Ariadne-Forschende aus sechs am @ariadneprojekt.bsky.social beteiligten Instituten an dem neuen #Szenarienreport2025 gearbeitet. Die wichtigsten #Erkenntnisse könnt ihr jetzt auch in knapp drei Minuten auf YouTube ansehen 👇 🎞️ Mehr dazu im vollständigen Report 👉 lnkd.in/ekaXRWuT

Klimaneutralität 2045: Ariadne-Szenarienreport kalkuliert kosteneffiziente Pfade für Deutschland

YouTube video by Potsdam Institute for Climate Impact Research PIK

youtube.com

Miriam Vollmer @miriamvollmer.bsky.social · last yr.

Wie kommen junge Männer und Frauen eigentlich miteinander klar?

Reto Mitteregger@indubioproreto.bsky.social · last yr.

Voilà:

Greenpeace e.V.@greenpeace.de · last yr.

🤔Was sogar viele Reiche als gerecht empfinden würden, passt nicht zu den Steuerplänen von Friedrich Merz. Er möchte weitere Entlastungen für hohe Einkommen. 👉Hier gehts zum Umfrage: act.gp/4hJc9Fm

Befragung deutscher Millionär:innen

Selbst Millionär:innen geben an, dass niedrigere Steuern für Superreiche ungerecht wären. Das zeigt diese Umfrage unter 511 deutschen Millionär:innen im Auftrag von Greenpeace und dem Netzwerk Patriot...

act.gp

Jan Böhmermann 🤨 (Parody)@janboehm.bsky.social · last yr.

Grade noch rechtzeitig vor der Bundestagswahl: das Opinion-Stück für die @nytimes.com über das Erstarken der Rechtsextremen, effektives "truth twisting" und die deutsche Geschichtsvergessenheit. www.nytimes.com/2025/02/20/o...

Opinion | Germany’s Far-Right Comeback

Germany’s attempts to “remember away” its Nazi past has instead paved the way for an extremist resurgence.

nytimes.com

David Ho @davidho.bsky.social · last yr.

Watch this! I want his desk lamp.

Opinion | Germany’s Far-Right Comeback (Gift Article)

Germany’s attempts to “remember away” its Nazi past has instead paved the way for an extremist resurgence.

nytimes.com

Ketan Joshi @ketanjoshi.co · last yr.

Nice bit from the IEA on the problem with constantly inflating EV size - mainly, massively higher mineral demand and electricity demand when charging them iea.blob.core.windows.net/assets/a9e35...

Breakdown of battery electric car sales in selected countries and regions by car size,
2018-2023
IEA. CC BY 4.0.
Notes: BEV = battery electric vehicle; SUV = sports utility vehicle. Analysis based on sales-weighted registrations. Small cars
include A and B segments. Medium cars include C and D segments and A segments with SUV body type. Large cars include
E and F segments, multi-purpose vehicles and B segments with SUV body type. SUV category in figure encompasses
segments C to F with SUV body type.
Source: IEA analysis based on data from EV Volumes

Nevertheless, from a policy perspective, it is critical to mitigate the negative
spillovers associated with an increase in larger electric cars in the fleet.
Larger electric car models have a significant impact on battery supply chains and
critical mineral demand. In 2023, the sales-weighted average battery electric SUV
in Europe had a battery almost twice as large as the one in the average small
electric car, with a proportionate impact on critical mineral needs. Of course, the
range of small cars is typically shorter than SUVs and large cars (see later section
on ranges). However, when comparing electric SUVs and medium-sized electric
cars, which in 2023 offered a similar range, the SUV battery was still 25% larger.
This means that if all electric SUVs sold in 2023 had instead been medium-sized
cars, around 60 GWh of battery equivalent could have been avoided globally, with
limited impact on range. Accounting for the different chemistries used in China,
Europe, and the United States, this would be equivalent to almost 6 000 tonnes of
lithium, 30 000 tonnes of nickel, almost 7 000 tonnes of cobalt, and over
8 000 tonnes of manganese.
Larger manganese also require more power, or longer charging times. This can
put pressure on electricity grids and charging infrastructure by increasing
occupancy, which could create issues during peak utilisation, such as at highway
charging points at high traffic times.
In addition, larger vehicles also require greater quantities of materials such as iron
and steel, aluminium and plastics, with a higher environmental and carbon
footprint for materials production, processing and assembly. Because they are
heavier, larger models also have higher electricity consumption. The additional

energy consumption resulting from the increased mass is mitigated by
regenerative braking to some extent, but in 2022, the sales-weighted average
electricity consumption of electric SUVs was 20% higher than that of other electric
cars.
6
Major carmakers have announced launches of smaller and more affordable
electric car models over the past few years. However, when all launch
announcements are considered, far fewer smaller models are expected than
SUVs, large models and pick-up trucks. Only 25% of the 400+ launches expected
over the 2024-2028 period are small and medium models, which represents a
smaller share of available models than in 2023. Even in China, where small and
medium models have been popular, new launches are typically for larger cars.

Adrian Odenweller @adrianodenweller.bsky.social · 2y ago

🚨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

Felix Schreyer @fschreyer.bsky.social · 2y ago

#ard verwechselt leider #Klima und #Wetter. Dass 2024 1.5C über dem vorindustriellen Zeitalter lag, bedeutet nicht, dass das 1.5C Ziel von #Paris überschritten ist. Das Ziel bezieht sich auf ein klimatologisches Mittel (über 30 Jahre). www.tagesschau.de/wissen/klima...

2024 war laut DWD deutlich zu warm und zu nass

Auch in diesem Jahr folgte ein Temperatur-Rekord auf den nächsten. Das macht 2024 zum wärmsten Jahr seit Beginn der Aufzeichnungen - sowohl in Deutschland als auch weltweit. Experten sind zunehmend al...

tagesschau.de

David Ho @davidho.bsky.social · 2y ago

In case you don’t believe the same equations describe motion in the atmosphere and the ocean.

PIK_climate @pik-potsdam.bsky.social · 2y ago

Wie können wir erneuerbaren Strom nutzen, um fossile Energieträger nachhaltig & kostengünstig zu ersetzen? Welche Rolle #Elektrifizierung und #Wasserstoff dabei spielen könnten, beschreibt PIK-Forscher @fschreyer.bsky.social ausführlich in einem Blogbeitrag: transforming-economies.de/elektrifizie...

Felix Schreyer @fschreyer.bsky.social · 2y ago

#Electrification or #Hydrogen? Our new #study explores the roles of both strategies in new #EU #scenarios to #climate neutrality and derives plausible future deployment ranges. Electrification is key, while hydrogen only needed for specific applications. www.cell.com/one-earth/fu...

PIK_climate @pik-potsdam.bsky.social · 2y ago

#Electrification or #hydrogen? Both have distinct roles in the European energy transition, shows new PIK study. Scientists find that shares of 42-60% for electricity & 9-26% for hydrogen-based energy are required in total energy consumption by 2050. www.pik-potsdam.de/en/news/late...

Electrification or hydrogen? Both have distinct roles in the European energy transition

02/16/2024 - A key step to achieving climate neutrality in the European Union is to rapidly shift from fossil fuels to electric technologies powered by renewable energies, a new study shows. At the sa...

pik-potsdam.de

Gereon Asmuth @gereonas.bsky.social · 3y ago

Wichtig für alle Journalist:innen. Bluesky hat sich zitierfähig gemacht. Posts können jetzt im Artikeln so verlinkt werden, dass sie auch Nicht-Bluesky-User:innen lesen können. Ein Grund mehr nicht mehr auf Twitter zu verweisen. blueskyweb.xyz/blog/12-21-2...

A New Look for Bluesky: The Social Butterfly

A new look for Bluesky — the social butterfly — and a public web interface.

blueskyweb.xyz