Kees van der Leun
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sustainable2050.bsky.social
Kees van der Leun
@sustainable2050.bsky.social
39 years of experience in the energy transition. Building Common Futures, a new energy transition consultancy.
Posts about energy, climate, Ukraine & more.
Also on Mastodon.
Reposts not an endorsement, views my own. #EnergySky
China’s CO2 emissions have now been flat or falling for 18 months.
The rapid adoption of electric vehicles (EVs) saw CO2 emissions from transport fuel drop by 5% year-on-year, while there were also declines from cement and steel production.
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November 11, 2025 at 5:41 AM
Reposted by Kees van der Leun
It got overshadowed by the pipeline news, but NYS’s deal to allow Greenidge Generation to keep operating an upstate gas plant *for the sole purpose of mining bitcoin* might be almost as big of a reversal gothamist.com/news/upstate...
Upstate NY Bitcoin mine agrees to slash emissions, will get air permit from the state
The move comes days after Hochul’s administration paved the way for a new natural gas pipeline in New York Harbor.
gothamist.com
November 10, 2025 at 8:50 PM
Reposted by Kees van der Leun
In the Arctic (the 15 million km² area above the Arctic Circle), October was the warmest on record: 4.5°C above the 1981-2010 average, that's over 5°C above pre-industrial temperature!
It's not every day that both poles set new monthly temperature records (see my earlier post). Last month also observed the warmest October on record for the #Arctic Circle. Not great!!

Data provided by doi.org/10.24381/cds....
November 10, 2025 at 6:17 AM
Reposted by Kees van der Leun
Here is a map view of the record high temperatures in October 2025 across the #Antarctic. Compare this blob of anomalies greater than 5°C with the Arctic from my earlier post. Yikes!

Data from doi.org/10.24381/cds... using a 1981-2010 reference period.
November 10, 2025 at 5:56 PM
Reposted by Kees van der Leun
The decision to sacrifice Ukrainians as disposable, second-class people for the sake of "avoiding escalation" has been an act of strategic idiocy. The consequences are now clear: Russia is more battle-hardened,its drone production is in overdrive, and its desperation makes it more dangerous,not less
On the first day of Russia’s full-scale invasion in February 2022, President Zelensky called NATO chief Jens Stoltenberg from a bunker in Kyiv, pleading for a no-fly zone to stop Russian airstrikes.

He cited NATO’s past interventions in Bosnia and Iraq, but
November 10, 2025 at 8:40 PM
Reposted by Kees van der Leun
Why did nobody tell me nato is at war
November 10, 2025 at 8:22 PM
Putin puppet Fico bites the dust.
Slovakia’s prosecutor has ruled that the 2023 transfer of MiG‑29 jets and air defense systems to Ukraine was not a crime. The move, made under former PM Eduard Heger, faced legal challenge from the current pro-Russian government of Robert Fico. Politico reports the case is now closed.
November 10, 2025 at 7:43 PM
Reposted by Kees van der Leun
.. and misinformation. Almost every corner of the biosphere is reeling from intensifying heat, storms, floods, droughts, or fires. The window to prevent the worst outcomes is rapidly closing."

Activists? Nah, just a scientific assessment:
The 2025 state of the climate report: a planet on the brink
November 9, 2025 at 9:15 PM
Reposted by Kees van der Leun
"We are hurtling toward climate chaos. The planet's vital signs are flashing red. The consequences of human-driven alterations of the climate are no longer future threats but are here now. This unfolding emergency stems from failed foresight, political inaction, unsustainable economic systems, ..
November 9, 2025 at 9:15 PM
In the Arctic (the 15 million km² area above the Arctic Circle), October was the warmest on record: 4.5°C above the 1981-2010 average, that's over 5°C above pre-industrial temperature!
It's not every day that both poles set new monthly temperature records (see my earlier post). Last month also observed the warmest October on record for the #Arctic Circle. Not great!!

Data provided by doi.org/10.24381/cds....
November 10, 2025 at 6:17 AM
Reposted by Kees van der Leun
Ukrainian FP‑2 drones struck Shahed warhead storage sites at Donetsk airport. One warehouse was completely destroyed, another damaged, satellite images confirm.
November 9, 2025 at 9:03 PM
"We are hurtling toward climate chaos. The planet's vital signs are flashing red. The consequences of human-driven alterations of the climate are no longer future threats but are here now. This unfolding emergency stems from failed foresight, political inaction, unsustainable economic systems, ..
November 9, 2025 at 9:15 PM
Reposted by Kees van der Leun
Good afternoon!
November 9, 2025 at 2:44 PM
I mean, I was just calculating 89/52, and then I got this...
November 9, 2025 at 8:34 PM
October 2025 was a record month of October for German renewable electricity, covering 62% of national electricity demand (public grid)!
Neuer Rekord!
62,1 Prozent des öffentlichen Stromverbrauchs in Deutschland wurden im Oktober von erneuerbaren Energien erzeugt. Das ist ein neuer Rekord für einen Oktobermonat.
Die Last ist die Summe aus dem Stromverbrauch aus dem Netz und den Netzverlusten.
www.energy-charts.info/charts/renew...
November 9, 2025 at 8:09 PM
Reposted by Kees van der Leun
It's sad to see that the Trump regime has - for now - succeeded in bringing down the @noaa website reporting on atmospheric CO2 at Mauna Loa since 1958. Now via the government shutdown, but it was already under attack by selling its building and scrapping jobs too.
www.nytimes.com/2025/07/17/c...
November 9, 2025 at 7:09 AM
Reposted by Kees van der Leun
In a targeted overnight strike, Russian drones hit a symbol of Ukraine's green energy future. The "Clear Energy" combined heat and power plant, built in 2016, was the nation's first major biomass facility.
November 9, 2025 at 4:45 PM
63% to go.
According to Ukraine's Security Service (SBU), nearly 160 successful strikes have been conducted in 2025 against oil extraction and refining facilities, leading to fuel shortages and a 37% drop in refining capacity.
Russia's air defenses are wide open — there's just one problem
Ukrainian drones — and the occasional missile — have been causing havoc across Russia for months. According to Ukraine's Security Service (SBU), nearly 160 successful strikes have been conducted in 2...
kyivindependent.com
November 9, 2025 at 6:55 PM
Reposted by Kees van der Leun
Together with other ENVI coordinators from pro-EU groups in parliament, I just finalized a timeline to complete 2040 climate targets before the climate summit #COP30.
From the beginning, it was a mistake by EPP to hand over this crucial climate file to the far-right. 1/3
July 15, 2025 at 3:51 PM
Reposted by Kees van der Leun
Good morning!
November 9, 2025 at 8:56 AM
Reposted by Kees van der Leun
Dear @wopkehoekstra.ec.europa.eu, how can the EU take over the important role of regular reporting on this vital parameter for the world's future? I hope the plans are ready, since the threat has been building during the Trump era.
November 9, 2025 at 7:25 AM
Good afternoon!
November 9, 2025 at 2:44 PM
Reposted by Kees van der Leun
"Unlocking these tipping points requires courageous leadership, public engagement, and widespread institutional change. Climate policy must be consistent with what is scientifically and ethically required, regardless of political concerns. Delay only increases the human and environmental toll."
5/
November 8, 2025 at 9:38 PM
Good morning!
November 9, 2025 at 8:56 AM