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Katharina Umpfenbach

@kumpfenbach.bsky.social
306 followers 251 following 5 posts

Working on Germany's future electricity system at dena. Views are my own.

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Reposted by Katharina Umpfenbach
Jessica Valenti @jessicavalenti.bsky.social · 14/10/2026
Katie Zacharia sat on the advisory board of an organization that calls for women who have abortions to be executed “in the public square,” and for pro-choice Americans to lose their right to hold public office.
jessica.substack.com
Trump’s New Press Secretary Supports the Death Penalty for Abortion Patients
10.13.26
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Dezernat Zukunft @dezernatzukunft.bsky.social · 14h
Die CDU will die Stromsteuer für alle auf das EU-Minimum senken. Was bringt das? Ein Vier-Personen-Haushalt zahlte 2025 rund 1.464 Euro für Strom, davon nur 93 Euro oder 6 Prozent Stromsteuer inklusive Mehrwertsteuer.
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EmmanuelSPV @emmanuelspv.bsky.social · 14h
Before (2025) / After (2026) Rue Julien Lacroix in the 20th arrondissement of Paris. It is not a school street since there is still motorized traffic here even though it is now only on one way, but is has been greened a lot nevertheless by removing many car parking spots.
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Anne Applebaum @anneapplebaum.wsocial.eu · 22h
If Putin stops fighting, the war ends. If Zelensky stops fighting then his country will be occupied, leaders murdered, language banned, businesses stolen, children kidnapped. That's what happens in Russian-occupied Ukraine.
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Lauri Myllyvirta @laurimyllyvirta.bsky.social · 14/10/2026
China's coal imports fell 6% in September year on year, crude oil imports fell 22% and fossil gas imports by 2%. Mirrors reductions in consumption as solar and wind displace coal and gas and EVs and rail displace oil.
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Ingwar Perowanowitsch @ingwarpero.bsky.social · 14/10/2026
Paris macht weiter! Der Nachfolger von Anne Hidalgo und neue Bürgermeister Emmanuel Grégoire hat heute seine Fahrrad-Pläne für seine 1. Amtszeit bis 2032 vorgestellt. Hier die 5 wichtigsten Maßnahmen: - 140 Kilometer an neuen Radwegen - 220 Kilometer neue Fahrradstraßen in Einbahnstraßen ...
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EmmanuelSPV @emmanuelspv.bsky.social · 13/10/2026
Before (2025) / After (2026) the pedestrianization of this section of Rue de la Jonquière in the 17th arrondissement of Paris. You could not have put the crowd in the after photo on the sidewalks of the before photo !
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Kees van der Leun @sustainable2050.bsky.social · 13/10/2026
The EU natural gas (wholesale) price just reached a new Trump-Netanyahu war high at €87 per MWh. That's about 3 times the price before they started the war, and about 5 times the price before Putin started his energy war in 2021. Not a nice combination with relatively poorly filled gas storages.
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Kees van der Leun @sustainable2050.bsky.social · 12/10/2026
Hackers force French supermarket fridges to heat up to 50C in ‘unprecedented’ cyber-attack www.theguardian.com/world/2026/o...
theguardian.com
Hackers force French supermarket fridges to heat up to 50C in ‘unprecedented’ cyber-attack
Hundreds of Intermarché shops and Coopérative U outlets in France hit, with fears Dutch chains also affected
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Ember @ember-energy.org · 07/10/2026
The distributed solar power boom in Pakistan and the Philippines is driving down the need for fossil-powered electricity. Solar is "gradually reducing the market share and operating hours of fossil fuel plants” says Ember's Alnie Demoral via Bloomberg. www.bloomberg.com/ne...
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Dr Paul Dorfman @drpauldorfman.bsky.social · 04/10/2026
Australia’s ‘postcard from the future’ of big #batteries. Grid storage projects have been reducing #power prices and emissions www.ft.com/content/c77b...
ft.com
Australia’s ‘postcard from the future’ of big batteries
Grid storage projects have been reducing power prices and emissions — but ‘cannibalising’ their own revenues in the process
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Claude Monet @monet.bsky.social · 03/10/2026
View of Argenteuil in the Snow - 1875 botfrens.com/collections/41/content…
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Michael Liebreich @mliebreich.bsky.social · 30/09/2026
My favourite chart from the @IEA special report on electrification. Electricity is only 23% of Final Energy (No big deal), but it's 37% of Useful Energy (What?) and delivers 46% of GDP (Wow!) And it's going clean, fast. Still think there's no transition? iea.blob.core.windows.net/assets/1c696...
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Momentum Magazine @momentummag.bsky.social · 30/09/2026
Paris cycling numbers double in one year thanks to massive investment and it’s not stopping. momentummag.com/paris-cyclin...
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Arne Semsrott @arnesemsrott.bsky.social · 30/09/2026
1) Die AfD plant in Sachsen-Anhalt gemeinsam mit dem BSW, nur noch ihre eigenen Landtags(vize)präsidenten zuzulassen. Damit können alle anderen Fraktionen gegängelt werden. 2) Sie wollen die Ausschüsse so besetzen, dass die AfD überall Blockademehrheit hat. Nur noch AfD-Themen auf der Tagesordnung.
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Miriam Vollmer @miriamvollmer.bsky.social · 30/09/2026
Schlecht, sehr schlecht
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Ben McWilliams @bmcwilliams.bsky.social · 29/09/2026
Battery electric share of EU vehicle registrations continues to grow and break records. 28 percent of new registrations in August. Up 10 percentage points year-on-year. european-clean-tech-tracker.bruegel.org/s/E2BN1A
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Dr Paul Dorfman @drpauldorfman.bsky.social · 29/09/2026
#solar power timesofindia.indiatimes.com/articleshow/...
timesofindia.indiatimes.com
Pakistanis turned to rooftop solar as power bills soared; it has now saved $12 billion in fuel imports
The global solar capacity is growing rapidly, so much so that by 2030, approximately 100 million households will rely on rooftop solar, according to the International Energy Agency. According to resea...
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Marisa Kabas @marisakabas.bsky.social · 28/09/2026
the cornell case has me thinking about christine blasey ford and how she so bravely testified in 2018 about how future supreme court justice brett kavanaugh had sexually assaulted her. i'm thinking about what i wrote at the time and how nothing has changed:
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Jon Worth @jonworth.eu · 28/09/2026
Damn I am tired of people laughing about Deutsche Bahn. Travel in many other places in Europe and you will discover Germany is trying to do many things right with its railways. A quick blog post / rant from me: jonworth.eu/your-deutsche-… #CrossBorderRail
jonworth.eu
Your Deutsche Bahn "joke" is no longer funny (if it ever was)
Before attempting my record attempt between Kemijärvi, Finland and Lagos, Portugal, people told me over and over it would break down in Germany. So much so that I even tried to re-but (pre-but?) some of the likely critique. Now, having made the trip, and none of the total
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Claas Gefroi @claasgefroi.bsky.social · 28/09/2026
Die Akademie der Wissenschaften im Stadtzentrum Kyivs wurde angegriffen und Menschen versuchen verzweifelt, durch Fenster aus dem brennenden Gebäude zu entkommen. Haben BSW und AfD schon erklärt, dass das die Schuld der Ukraine und des Westens ist und man einfach nur mit Putin reden müsse?
Foto des brennenden Gebäudes. Menschen stehen verzweifelt an den Fenstern, aus denen dicker Rauch dringt.
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Claude Monet @monet.bsky.social · 28/09/2026
Path in the Fog - 1887 botfrens.com/collections/41/content…
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David Ho @davidho.bsky.social · 25/09/2026
If you build it, they will come.
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Jörg Spengler 🇪🇺 @joergspengler.bsky.social · 25/09/2026
„Aufheulende Motoren mitten in der Nacht sind keine Freiheit, sondern Rücksichtslosigkeit auf Kosten der Nachbarschaft.“ Bremen bringt einen Antrag in den Bundesrat ein „zur wirksameren Bekämpfung des sogenannten #Autoposing im öffentlichen Straßenraum“.👏 www.sueddeutsche.de/politik/auto...
sueddeutsche.de
Verkehr: Bremen fordert härtere Strafen für Autoposer
Aufgemotzte Fahrzeuge, aufheulende Motoren: Nachbarländer haben gegen diese Stadtplage bereits reagiert, jetzt fordert Bremen auch für Deutschland schärfere Gesetze.
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Prof Julia Steinberger 🌹🌱🌍 #ClimateAction #Fightfascism @jksteinberger.bsky.social · 25/09/2026
In case it wasn't clear, academia is crumbling under the enormous flood of AI-generated content. The latest victim is the Marie Skłodowska-Curie Actions (MSCA) flagship EU postdoctoral fellowships. The number of submissions has more than doubled in the past 3 years.
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Katharina Nocun @kattascha.bsky.social · 25/09/2026
„Horrorstories vom Berliner Wohnmarkt“ wäre auch ein dankbares Recherchethema. Das alles wird oft so abstrakt diskutiert. In der Praxis bedeutet das auch: Schimmel & es passiert nix & in der Wohnung leben Kinder. Umziehen geht nicht, man ist gefangen - gibt ja keine Alternativen.
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EmmanuelSPV @emmanuelspv.bsky.social · 25/09/2026
Before (1960s ?) / After (2026) Rue du Mont-Cenis in the 18th arrondissement of Paris. The dead-end street was a parking until around 2005.
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Kees van der Leun @sustainable2050.bsky.social · 24/09/2026
Dude just informed me that the sun doesn't shine at night... Why did nobody tell me when I started working on solar energy 40 years ago?!
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Simon Evans @drsimevans.carbonbrief.org · 16/09/2026
ELECTRIFICATION: Really striking chart showing that three-quarters of final energy demand can now be electrified "economically" (ie at lower lifetime cost) – and 90% electrification is technically possible From the latest @ember-energy.org slidedeck by @kingsmillbond.bsky.social and colleagues
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James Murray @james-bg.bsky.social · 20/09/2026
I know almost everything is terrible, but this year really could be world-historic in a good way. It’ll be several more years before it can be definitively called, but there are encouraging signs emissions really are peaking. www.businessgreen.com/news/4535893...
businessgreen.com
Study: Global fossil-fuel emissions to fall 0.5 per cent this year
Strait of Hormuz crisis has led to lower oil and gas demand that should more than offset any increased emissions from higher coal power generation, Carbon Brief calculates
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Anne Rabe @annerabe.bsky.social · 20/09/2026
Wie großartig, dass wir wählen können!
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Ingwar Perowanowitsch @ingwarpero.bsky.social · 19/09/2026
Der Tankrabatt 3.0 kostet uns 2,5 Mrd. Euro. Was der Staat mit diesem Geld finanzieren könnte: 1 Jahr Kindergrundsicherung 1 knappes Jahr 🇩🇪-Ticket 2 Generalsanierungen von Bahnstrecken 4 Jahre Radverkehrsförderung Einbau von 250.000 Klimaanlagen in Klassenzimmer Was für ein Trauerspiel😫 
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Brent Toderian @brenttoderian.bsky.social · 29/08/2026
“Dutch people cycle an average of 2.6km each per day. If this pattern was replicated worldwide, annual carbon emissions would drop by 686 million tonnes. This mammoth figure exceeds the entire carbon footprint of most countries, including the UK, Canada, Saudi Arabia and Australia.” @euronews.com
euronews.com
Cycling like the Dutch would slash the world’s carbon footprint
If everybody cycled like the Dutch, we could offset the UK or Australia’s entire carbon footprint.
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Michael Kellner @mikellner.bsky.social · 18/09/2026
Die AfD will uns an Putin verraten. Klingt vielleicht platt, ist aber so. Mehr hier👇 www.reuters.com/world/putin-...
reuters.com
EXCLUSIVE: Putin envoy and far-right AfD prepare talks to get Russian gas back for Germany, sources say
Russian President Vladimir Putin's top economic envoy and Germany's far-right AfD leadership have begun preparations to meet next year to discuss restarting gas supplies to Europe's biggest economy, t...
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Frau Büüsker @uedio.bsky.social · 18/09/2026
Reminder: Die Stromsteuer wurde immer noch nicht gesenkt, weil dafür angeblich kein Geld da war
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Charlotte Clymer @charlotteclymer.bsky.social · 18/09/2026
It's pretty damn impressive how much ground Mayor Mamdani has been able to cover after only nine months in office on a wide range of basic quality-of-life issues in NYC. I was reading through the numbers this morning, and they're kinda astonishing. (thread)
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Kate Starbird @katestarbird.bsky.social · 18/09/2026
My mom had polio when she was five. She was living on a US military base in Japan (1947). Four kids on the base died. She was the only survivor.
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EmmanuelSPV @emmanuelspv.bsky.social · 16/09/2026
Before (2014) / After (2026) Avenue Debidour in the 19th arrondissement of Paris. The change was done in the first months of 2026. One could say that the park that was at the end of the former parking street now somehow starts right here.
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Simon Evans @drsimevans.carbonbrief.org · 16/09/2026
NEW ANALYSIS: Global fossil-fuel emissions are set to fall by around 0.5% in 2026 amid the ongoing Hormuz crisis We've all see the scare stories about a "return to coal" – but the "demand destruction" for oil is even bigger Here's how it stacks up: www.carbonbrief.org/analysis-glo...
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Saskia Ellenbeck @saskiaellenbeck.bsky.social · 16/09/2026
Mobilität verändert sich. Zum 31.12.2025 waren in Tempelhof-Schöneberg insgesamt 102.045 und damit rund 3.200 weniger PKW angemeldet als noch 2021. Der Motorisierungsgrad ist im gleichen Zeitraum um -5,9 % zurückgegangen. Alle Zahlen, Daten Fakten und Karten hier ⬇️ www.berlin.de/ba-tempelhof...
Motorisierungsrate als Karte Motorisierungsrate als Diagramm Berlin Entwicklung der gewerblichen und privaten PKW
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Kees van der Leun @sustainable2050.bsky.social · 15/09/2026
Glaciologist @matthias-huss.bsky.social shows that the centre of the Great Aletsch glacier in Switzerland (the biggest in the Alps) lost 6 meters(!) of thickness just this summer. "No words...", he adds on LinkedIn.
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Ingwar Perowanowitsch @ingwarpero.bsky.social · 13/09/2026
Diese Woche war ich mangels Alternativen in einem Hotel direkt am Berliner Kurfürstendamm - eine Straße, die sich jeden Abend bis spät in die Nacht in eine Rennstrecke für getunte Protzautos verwandelt. Mit röhrendem Motor rasen diese Poser mit weit über 50 km/h durch die Stadt und...(1/3)
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Leonhard Gandhi @energy-charts.bsky.social · 12/09/2026
Seit dem 1. Januar 2026 ist der Preis für Erdgas an der Börse um den Faktor 2,8 gestiegen. energy-charts.info/charts/price...
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EmmanuelSPV @emmanuelspv.bsky.social · 11/09/2026
Avant / Après les arbres plantés sur le parvis de l'Hôtel de Ville le long de la Rue de Rivoli, dans Paris Centre. Des arbres ont également été plantés pareillement sur l'autre bout du parvis, le centre est resté inchangé à cause de la présence d'un parking automobile souterrain.
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Elizabeth Spiers @espiers.bsky.social · 11/09/2026
So I was in NYC on 9/11 and my then future husband was in Chicago sleeping through it because 9/11 is his birthday and he’d had an epic bday night out the night before
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Kachelmannwetter @kachelmannwetter.com · 08/09/2026
Vielen ist nicht mehr bewusst, dass ≥ 35°C selbst im Oberrheingraben früher selten waren und nur alle paar Jahre mal 1 bis 2 Tage dabei waren. Nach 2003 und 2015 stellt der Sommer 2026 nun alles in den Schatten. /FR
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Natascha Strobl @nataschastrobl.bsky.social · 11/09/2026
An 9/11 gibt es viele Geschichten, die zeigen, das Menschen gerade in Krisenzeiten zu so viel fähig sind. Drei berühren mich immer wieder. Das eine ist Gander, Kanada. Dann die größte Bootsevakuierung seit Dunkirk. Und natürlich die Passagiere von Flug 93.
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Qagggy! @qagggy.bsky.social · 10/09/2026
The World Trade Center at the dawn of a new millennium. (I took this photo on January 1, 2000 with a disposable camera from Bartell's.)
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