Wolf-Peter Schill

DIW Berlin @diw.de [ View ] Jul 01, 2024 at 14:52 UTC

2. Teil unseres Elektro-LKW Specials bei diw.de/fossilfrei: Technologieoffenheit als Kampfbegriff? Dieses Mal haben @wpschill.bsky.social & @aroth.bsky.social Julius Jöhrens vom @ifeu.bsky.social zu Gast.
▶️ open.spotify.com/episode/2jVF... (Spotify)
▶️ www.diw.de/de/diw_01.c.... (YouTube)

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jul 01, 2024 at 17:09 UTC

How it started and how it’s going

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 30, 2024 at 09:34 UTC

🎙🚚🔌🔋 #fossilfrei Folge #19: @aroth.bsky.social und ich sprechen mit Julius Jöhrens vom @ifeu.bsky.social über #Brennstoffzelle, #Oberleitung, Batterie-Lkw, Batteriewechseltechnologien, #Technologieoffenheit und unsere Studie zur Frage, wie sich das alles auf den Stromsektor auswirkt. @diw.de ⬇️

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 29, 2024 at 16:27 UTC

Immer noch die würdevollste Art des Public Viewings #Späti #GERDEN

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 29, 2024 at 14:36 UTC

Eins meiner Kinder hat heute mein altes Radio gefunden und sich eine ganze Weile damit beschäftigt. Und dann hat er festgestellt: „Das Lied da drin kann man gar nicht wiederholen.“ #generationspotify

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 27, 2024 at 11:13 UTC

There are R&D projects for e-trailers in Germany at the moment, but afaik it's not really a silver bullet www.linkedin.com/posts/elektr...

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 27, 2024 at 10:37 UTC

I also find battery swapping interesting, but it involves a lot of standardization and coordination. In China, it already is a real thing, compare here: www.cell.com/joule/fullte... Not sure how practical "tenders" would be, and if they would require less coordination; is there literature on this?

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 27, 2024 at 10:04 UTC

We were also surprised how much PV could actually be absorbed by HDV directly. But even if trucks are on the road (and not under an overhead line) during PV peak hours, they could also make indirect use of PV via other flexibility options in the power sector like stationary storage, of course.

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 27, 2024 at 10:02 UTC

Thanks! Here we looked at heavy-duty vehicles >26, for which swappable batteries may in fact become a thing. We are looking at this in follow-up research :) For smaller trucks, battery swap seems implausible, as battery restrictions don't play much of a role there.

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 26, 2024 at 15:32 UTC

What actually is a #Dunkelflaute, and how can we measure it? Monster🧵 by my co-author @kittelmartin.bsky.social on our paper titled "Measuring the Dunkelflaute: How (not) to analyze variable renewable energy shortage" 🔽

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 26, 2024 at 06:07 UTC

Heute Morgen beim Frühstück hat mich Kind 3 eine Weile still angeguckt und dann festgestellt, dass meine Frisur aussieht wie die von Gargamel. Auch euch allen einen guten Start in den Tag! ☀️

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 16:30 UTC

Thanks, Sebastian! No, long-duration storage needs hardly increase, or even decrease for flexible BEV (Fig. S.6). This is different for "inflexible", on-site hydrogen generation at filling stations. though. But to be fair: the European interconnection also helps a bit with integrating additional PV.

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 16:06 UTC

Thanks! Yes, these options require a lot of additional electricity, which is largely provided by wind power, some PV, and some additional electricity from gas power plants in the optimum. Accordingly, the renewable share also decreases in these cases (we set a minimum of 80%)

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 15:56 UTC

9/ I want to conclude with a big shout out to my fantastic co-authors Carlos Gaete @diw.de and Julius Jöhrens & Florian Heining @ifeu.bsky.social 👋 Well done, team!

And we gratefully acknowledge research grants by @bmuv.de and @bmwk.de

And finally, a 🇩🇪 policy summary: www.diw.de/de/diw_01.c....

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 15:53 UTC

8/ We conclude: from a power sector perspective, direct electrification of trucks and flexible charging is clearly preferable. Or as we write in the title: "Go electric, and charge smartly!"

Want to read more? #openaccess article in Cell Reports Sustainability, full text 🔽

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 15:49 UTC

7/ Results remain qualitatively robust in numerous sensitivity analyses where we investigate the effects of the 🇪🇺 interconnection, constrained wind power expansion, or alternative assumptions on charging availability. If you like, check out the Supplemental Information 🤓

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 15:47 UTC

6/ Another result: in the optimum, BEVs and catenary BEVs favor solar photovoltaic energy, while hydrogen and e-fuels also require substantial wind power investments, and also increase fossil electricity generation. ERS = electric road system (catenary) FCEV = fuel cell electric vehicle PtL = efuels

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 15:44 UTC

5/ Why do flexibly operated BEV trucks incur the lowest power sector costs? They can charge their batteries in hours of low residual load, which generally go along with low electricity prices. This allows using renewable surplus energy. With V2G, trucks even feed such electricity back to the grid.🔋

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 15:34 UTC

4/ This is because indirect electrification is less energy efficient, which outweighs potential flexibility benefits. So the flexibility of green hydrogen storage does not outweigh its energy efficiency challenges. Important assumption: H2 is produced domestically, and not imported from "somewhere".

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 15:32 UTC

3/ Power sector costs are the lowest for flexibly charged battery-electric vehicles (BEVs) that also do vehicle-to-grid (V2G) and the highest for e-fuels. If BEVs are not optimally charged, power sector costs increase - but are still substantially lower than in scenarios with hydrogen or e-fuels.

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 15:30 UTC

2/ Our paper in a nutshell: We investigate the power sector implications of alternative options for de-fossilizing heavy-duty trucks in future scenarios for 🇩🇪, using an open-source capacity expansion model (with the cool German name DIETER) and route-based truck traffic data.

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 15:25 UTC

1/ 🚚🔌🔋⚡💧⛽ How to de-fossilize #trucks: with #batteries, overhead lines, #hydrogen, or #efuels? We just published a new paper🧪, focusing on how these alternative options would interact with a future electricity sector with a high share of variable renewables. Let me share few insights in a little 🧵🔽

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 12:16 UTC

Bei den Bussen insgesamt (nicht nur Linienbusse) spielt Wasserstoff im Vergleich zu Batterien aber fast keine Rolle. Hier die letzten Bestandsanteile laut KBA, zeigen wir seit kurzem im #OpenEnergyTracker openenergytracker.org/de/docs/germ...:
3,3% BEV (2809 Fahrzeuge)
0,1% H2-Brennstoffzellen (74!)

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 08:01 UTC

Nobody move

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 07:57 UTC

Zur Einordnung: eine wesentlich Annahme dabei ist, dass der Wasserstoff heimisch erzeugt wird, und nicht günstig und in beliebigen Mengen irgendwoher importiert werden kann. Gleiches gilt für den Fall mit E-Fuels, wo die Kosten noch stärker steigen.

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Wolf-Peter Schill @wpschill.bsky.social [ View ] Jun 25, 2024 at 07:40 UTC

Wir haben uns die Stromsektor-Effekte von verschiedenen Optionen zur #Dekarbonisierung schwerer #Lkw angeschaut. Dabei zeigt sich: die gute Speicherbarkeit von #Wasserstoff wird mehr als aufgewogen durch seine schlechte #Energieeffizienz, direkt-elektrische Antriebe sind daher deutlich günstiger.

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