Henri Horn
@henrihorn.bsky.social
Clean energy consultant, Nürnberg.
#Wärmewende
Archived tweets (excl retweets and replies) since 2017 archived at dormant handle @hhornfi.bsky.social
#Wärmewende
Archived tweets (excl retweets and replies) since 2017 archived at dormant handle @hhornfi.bsky.social
Finally, wind power capacity in Germany is growing at an increased pace in the first half of 2025, with 67% more additions than last year's equivalent period. But the record year is still 2017.
www.tagesschau.de/wissen/klima...
www.tagesschau.de/wissen/klima...
Windkraft in Deutschland: Der entscheidende Aufwind
Windenergie ist ein zentrales Zugpferd der deutschen Energiewende. Nach Jahren schleppenden Ausbaus zeigen die politischen Beschleunigungsmaßnahmen erste Erfolge. Von Jan Koch.
www.tagesschau.de
November 25, 2025 at 6:56 AM
Finally, wind power capacity in Germany is growing at an increased pace in the first half of 2025, with 67% more additions than last year's equivalent period. But the record year is still 2017.
www.tagesschau.de/wissen/klima...
www.tagesschau.de/wissen/klima...
Reposted by Henri Horn
Reposted by Henri Horn
I'm really glad renewable technology development doesn't depend on the COP negotiations.
Petrostates, fossil fuel companies, and their lackeys can sabotage diplomacy, but it's becoming increasingly transparent what they do is simply evil, while we will ditch fossil fuels anyway.
Petrostates, fossil fuel companies, and their lackeys can sabotage diplomacy, but it's becoming increasingly transparent what they do is simply evil, while we will ditch fossil fuels anyway.
COP30 BREAKING NEWS: The likely final text of the "global mutirão" has been published, ahead of the closing plenary
Here's the snap analysis from the CB team…see last line
unfccc.int/sites/def...
Here's the snap analysis from the CB team…see last line
unfccc.int/sites/def...
November 23, 2025 at 12:03 PM
I'm really glad renewable technology development doesn't depend on the COP negotiations.
Petrostates, fossil fuel companies, and their lackeys can sabotage diplomacy, but it's becoming increasingly transparent what they do is simply evil, while we will ditch fossil fuels anyway.
Petrostates, fossil fuel companies, and their lackeys can sabotage diplomacy, but it's becoming increasingly transparent what they do is simply evil, while we will ditch fossil fuels anyway.
Exactly 80 years ago the #NurembergTrials started.
Back then, POTUS was not a corrupt narcissist despot so USA rejected proposals by Stalin and other allies to summarily execute Nazi #warCriminals after show trials, and instead demanded evidence based fair trials and #RuleOfLaw
Back then, POTUS was not a corrupt narcissist despot so USA rejected proposals by Stalin and other allies to summarily execute Nazi #warCriminals after show trials, and instead demanded evidence based fair trials and #RuleOfLaw
November 23, 2025 at 11:47 AM
Exactly 80 years ago the #NurembergTrials started.
Back then, POTUS was not a corrupt narcissist despot so USA rejected proposals by Stalin and other allies to summarily execute Nazi #warCriminals after show trials, and instead demanded evidence based fair trials and #RuleOfLaw
Back then, POTUS was not a corrupt narcissist despot so USA rejected proposals by Stalin and other allies to summarily execute Nazi #warCriminals after show trials, and instead demanded evidence based fair trials and #RuleOfLaw
#DistrictHeating can be Local Cooperative, as in rural Steyerberg, 🇩🇪 Germany:
-28 km network
-450 buildings
-14.000 m2 #SolarThermal
-17.000 m3 #HeatStorage tank
-5x air source #heatPumps total 1090 kW
-2x 900kW heat pumps
-950 kW biomass boiler
-cost 30 M€
www.energiezukunft.eu/buergerenerg...
-28 km network
-450 buildings
-14.000 m2 #SolarThermal
-17.000 m3 #HeatStorage tank
-5x air source #heatPumps total 1090 kW
-2x 900kW heat pumps
-950 kW biomass boiler
-cost 30 M€
www.energiezukunft.eu/buergerenerg...
Kraftakt Wärmewende: Genossenschaftliches Wärmeprojekt im zweiten Anlauf
Geplant und finanziert war ein Nahwärmenetz, das zu 70 Prozent die Abwärme eines Chemieunternehmens nutzen sollte. Dann kam alles anders. Nun ist ein Technologiemix entstanden, der in seiner Vielfalt ...
www.energiezukunft.eu
November 22, 2025 at 9:33 PM
#DistrictHeating can be Local Cooperative, as in rural Steyerberg, 🇩🇪 Germany:
-28 km network
-450 buildings
-14.000 m2 #SolarThermal
-17.000 m3 #HeatStorage tank
-5x air source #heatPumps total 1090 kW
-2x 900kW heat pumps
-950 kW biomass boiler
-cost 30 M€
www.energiezukunft.eu/buergerenerg...
-28 km network
-450 buildings
-14.000 m2 #SolarThermal
-17.000 m3 #HeatStorage tank
-5x air source #heatPumps total 1090 kW
-2x 900kW heat pumps
-950 kW biomass boiler
-cost 30 M€
www.energiezukunft.eu/buergerenerg...
Reposted by Henri Horn
Mit "technologieoffen" ist nicht wirklich technogieoffen gemeint, sondern: Wir wollen keinen #Klimaschutz machen.
November 15, 2025 at 4:04 PM
Mit "technologieoffen" ist nicht wirklich technogieoffen gemeint, sondern: Wir wollen keinen #Klimaschutz machen.
Reposted by Henri Horn
German reforms to limit power prices for industry and boost gas-fired generation risk hampering the growth in renewable energy the country needs, energy expert Claudia Kemfert told Montel’s Plugged In podcast this week. montelnews.com/news/9220dce...
German energy reforms put renewables growth at risk, expert says
German power reforms risk slowing renewables growth — price cap and gas tenders may deter PPAs and flexibility investments, warns expert Claudia Kemfert.
montelnews.com
November 21, 2025 at 10:04 AM
German reforms to limit power prices for industry and boost gas-fired generation risk hampering the growth in renewable energy the country needs, energy expert Claudia Kemfert told Montel’s Plugged In podcast this week. montelnews.com/news/9220dce...
Reposted by Henri Horn
Circa $5.7 T of that $7 T number from the IMF rare not subsidies but estimates of untaxed externalities related to FF consumption. The only way they, + $1.3 trillion in consumer price subsidies, would become a “fiscal pool” that could be repurposed is if all the 🌎’s govt’s imposed huge taxes on FFs.
The IMF finds global fossil-fuel subsidies in the trillions (≈$7T estimated recently), a fiscal pool that can be repurposed to finance retraining, guaranteed jobs, and community remediation if political will exists. Redirecting even a fraction funds huge, concrete programs.
November 22, 2025 at 7:50 PM
Circa $5.7 T of that $7 T number from the IMF rare not subsidies but estimates of untaxed externalities related to FF consumption. The only way they, + $1.3 trillion in consumer price subsidies, would become a “fiscal pool” that could be repurposed is if all the 🌎’s govt’s imposed huge taxes on FFs.
Instead of visiting yet another Christmas market, I came to #Flossenbürg concentration camp.
The Nazis sent 100.000 people here after 1938 for forced labour in granite mining and nearby Messerschmitt factory. 30.000 people were murdered before the US army liberated the camp in April 1945.
The Nazis sent 100.000 people here after 1938 for forced labour in granite mining and nearby Messerschmitt factory. 30.000 people were murdered before the US army liberated the camp in April 1945.
November 22, 2025 at 12:39 PM
Instead of visiting yet another Christmas market, I came to #Flossenbürg concentration camp.
The Nazis sent 100.000 people here after 1938 for forced labour in granite mining and nearby Messerschmitt factory. 30.000 people were murdered before the US army liberated the camp in April 1945.
The Nazis sent 100.000 people here after 1938 for forced labour in granite mining and nearby Messerschmitt factory. 30.000 people were murdered before the US army liberated the camp in April 1945.
The German railway company Deutsche Bahn needs to remind American military personnel stationed in Germany that they also need to respect local law and purchase a ticket before riding the train.
November 22, 2025 at 10:41 AM
The German railway company Deutsche Bahn needs to remind American military personnel stationed in Germany that they also need to respect local law and purchase a ticket before riding the train.
Reposted by Henri Horn
'Nuclear “cheap, clean, and secure” promise breaking down. SMRs largely theoretical, only advanced U.S. project cancelled over high costs. Renewables/storage now dominate energy economics, faster build times, flexibility, lower prices.'
oilprice.com/Alternative-...
oilprice.com/Alternative-...
Nuclear’s Costly Comeback Meets Harsh Market Reality | OilPrice.com
Nuclear power’s “cheap, clean, and secure” promise is breaking down.
oilprice.com
November 22, 2025 at 9:16 AM
'Nuclear “cheap, clean, and secure” promise breaking down. SMRs largely theoretical, only advanced U.S. project cancelled over high costs. Renewables/storage now dominate energy economics, faster build times, flexibility, lower prices.'
oilprice.com/Alternative-...
oilprice.com/Alternative-...
Reposted by Henri Horn
And of course there’s the extra sea-level rise, by half a meter or more. bsky.app/profile/rahm...
It further shows a similar sea-level rise pattern after #AMOC shutdown as we found in Levermann et al. 2005, with the dynamic rise extending down into the South Atlantic. (That would be added to any global rise caused by climate warming.) 🧵
➡️ agupubs.onlinelibrary.wiley.com/doi/full/10....
➡️ agupubs.onlinelibrary.wiley.com/doi/full/10....
November 22, 2025 at 5:55 AM
And of course there’s the extra sea-level rise, by half a meter or more. bsky.app/profile/rahm...
Reposted by Henri Horn
We spent a year investigating billionaires for @washingtonpost.com.
We found: the wealthiest 100 Americans gave $1.1 billion to influence the 2024 elections — 140x more than they did in 2000. And almost all of that giving boosted Republicans.
washingtonpost.com/politics/int...
We found: the wealthiest 100 Americans gave $1.1 billion to influence the 2024 elections — 140x more than they did in 2000. And almost all of that giving boosted Republicans.
washingtonpost.com/politics/int...
November 21, 2025 at 2:56 PM
We spent a year investigating billionaires for @washingtonpost.com.
We found: the wealthiest 100 Americans gave $1.1 billion to influence the 2024 elections — 140x more than they did in 2000. And almost all of that giving boosted Republicans.
washingtonpost.com/politics/int...
We found: the wealthiest 100 Americans gave $1.1 billion to influence the 2024 elections — 140x more than they did in 2000. And almost all of that giving boosted Republicans.
washingtonpost.com/politics/int...
Reposted by Henri Horn
US citizens should actively expose and document the unfolding crimes of ICE in their neighborhoods. Even years later this is valuable data in preventing fascist attacks in future
The #NaziCrimesAtlas app in Germany specifies locations and details of Nazi raids against Jews 87 years ago.
#NieWieder
The #NaziCrimesAtlas app in Germany specifies locations and details of Nazi raids against Jews 87 years ago.
#NieWieder
November 8, 2025 at 9:41 AM
US citizens should actively expose and document the unfolding crimes of ICE in their neighborhoods. Even years later this is valuable data in preventing fascist attacks in future
The #NaziCrimesAtlas app in Germany specifies locations and details of Nazi raids against Jews 87 years ago.
#NieWieder
The #NaziCrimesAtlas app in Germany specifies locations and details of Nazi raids against Jews 87 years ago.
#NieWieder
Reposted by Henri Horn
Centralised energy systems gives exceptional powers to political leaders. In many countries it is politicians who decide who gets energy and who doesn't.
When autocrats lie that
"Windmills don't work... What does work is natural gas, oil, nuclear, and other things"
It means they fear losing power
When autocrats lie that
"Windmills don't work... What does work is natural gas, oil, nuclear, and other things"
It means they fear losing power
Trump: "I don't think Saudi Arabia would like me too much if we decided to kill oil and natural gas. There's nothing like it. It works. Windmills don't work. Other things -- I don't want to get it into too much -- but they don't work. What does work is natural gas, oil, nuclear, and other things."
November 20, 2025 at 6:27 AM
Centralised energy systems gives exceptional powers to political leaders. In many countries it is politicians who decide who gets energy and who doesn't.
When autocrats lie that
"Windmills don't work... What does work is natural gas, oil, nuclear, and other things"
It means they fear losing power
When autocrats lie that
"Windmills don't work... What does work is natural gas, oil, nuclear, and other things"
It means they fear losing power
Reposted by Henri Horn
It's always hard to pick a worst day politically, but today the president called for the death of members of the opposition party, and the administration decided that people were being too hard on the swastika
November 21, 2025 at 4:15 AM
It's always hard to pick a worst day politically, but today the president called for the death of members of the opposition party, and the administration decided that people were being too hard on the swastika
Reposted by Henri Horn
More than 25% of downtown is parking, so City Council is proposing a commercial parking tax to help internalize the associated externalities—things like poor walkability and antisocial behavior.
They vote next week. Please send them a quick note here urging their support!
They vote next week. Please send them a quick note here urging their support!
Support a modest tax on commercial parking tax
As reported in RANGE, Spokane City Council is considering a commercial parking tax at its meeting on Monday, November 17. Structured as a 6-12% fee to park at a commercial lot, the measure would help ...
actionnetwork.org
November 21, 2025 at 12:40 AM
More than 25% of downtown is parking, so City Council is proposing a commercial parking tax to help internalize the associated externalities—things like poor walkability and antisocial behavior.
They vote next week. Please send them a quick note here urging their support!
They vote next week. Please send them a quick note here urging their support!
If those 2 billion parking spots in the USA were used to host PV panels rather than cars, they would have total capacity of roughly 2 TWp and supply on average half of national electricity demand.
Anyone who claims there isn’t enough parking just remember
There are over 2 billion parking spots in the US alone
That’s enough parking for every American to own 5 cars
If we put all the parking spaces into one giant lot it would cover over the entire states of Connecticut and Vermont
There are over 2 billion parking spots in the US alone
That’s enough parking for every American to own 5 cars
If we put all the parking spaces into one giant lot it would cover over the entire states of Connecticut and Vermont
November 20, 2025 at 9:55 PM
If those 2 billion parking spots in the USA were used to host PV panels rather than cars, they would have total capacity of roughly 2 TWp and supply on average half of national electricity demand.
Reposted by Henri Horn
If nuclear power is competitive, why is the most slam-dunk project in the US getting an ultra-cheap federal loan to cover most of its cost?
@opinion.bloomberg.com
www.bloomberg.com/opinion/arti...
@opinion.bloomberg.com
www.bloomberg.com/opinion/arti...
This $1 Billion Nuclear Loan Is a Bad Look for Nuclear
America’s biggest nuclear power company just scored an unequivocal home-run. The implications for America’s vaunted nuclear power renaissance are a little more equivocal.
www.bloomberg.com
November 20, 2025 at 2:12 PM
If nuclear power is competitive, why is the most slam-dunk project in the US getting an ultra-cheap federal loan to cover most of its cost?
@opinion.bloomberg.com
www.bloomberg.com/opinion/arti...
@opinion.bloomberg.com
www.bloomberg.com/opinion/arti...
Never would have thought that Trump would address one of the hard-to-decarbonise sectors (mobility) by abruptly limiting supply of flights.
Being evil and stupid at the same time could have positive outcomes.
Being evil and stupid at the same time could have positive outcomes.
A growing number of Americans are rolling into the holidays by train with Amtrak reporting an increase in riders after federally mandated flight reductions led to thousands of delays and cancellations at major airports nationwide. NBC News' Emilie Ikeda reports.
November 20, 2025 at 1:04 PM
Never would have thought that Trump would address one of the hard-to-decarbonise sectors (mobility) by abruptly limiting supply of flights.
Being evil and stupid at the same time could have positive outcomes.
Being evil and stupid at the same time could have positive outcomes.
Reposted by Henri Horn
🌻 #Steckersolar Webinare!
Wie geht #BalkonSolar?
Was bringt die neue Norm?
Spare ich damit Geld? Ja
Welche Rechte habe ich als #Mieter?
Was muß politisch getan werden, damit es einfacher wird?
📅 Do., 20.11. 🕖 19:00
📅 Do., 4.12. 🕖 19:00
ℹ️ & Anmeldung: balkon.solar/news/2025/11...
Wie geht #BalkonSolar?
Was bringt die neue Norm?
Spare ich damit Geld? Ja
Welche Rechte habe ich als #Mieter?
Was muß politisch getan werden, damit es einfacher wird?
📅 Do., 20.11. 🕖 19:00
📅 Do., 4.12. 🕖 19:00
ℹ️ & Anmeldung: balkon.solar/news/2025/11...
November 16, 2025 at 5:26 PM
🌻 #Steckersolar Webinare!
Wie geht #BalkonSolar?
Was bringt die neue Norm?
Spare ich damit Geld? Ja
Welche Rechte habe ich als #Mieter?
Was muß politisch getan werden, damit es einfacher wird?
📅 Do., 20.11. 🕖 19:00
📅 Do., 4.12. 🕖 19:00
ℹ️ & Anmeldung: balkon.solar/news/2025/11...
Wie geht #BalkonSolar?
Was bringt die neue Norm?
Spare ich damit Geld? Ja
Welche Rechte habe ich als #Mieter?
Was muß politisch getan werden, damit es einfacher wird?
📅 Do., 20.11. 🕖 19:00
📅 Do., 4.12. 🕖 19:00
ℹ️ & Anmeldung: balkon.solar/news/2025/11...
Centralised energy systems gives exceptional powers to political leaders. In many countries it is politicians who decide who gets energy and who doesn't.
When autocrats lie that
"Windmills don't work... What does work is natural gas, oil, nuclear, and other things"
It means they fear losing power
When autocrats lie that
"Windmills don't work... What does work is natural gas, oil, nuclear, and other things"
It means they fear losing power
Trump: "I don't think Saudi Arabia would like me too much if we decided to kill oil and natural gas. There's nothing like it. It works. Windmills don't work. Other things -- I don't want to get it into too much -- but they don't work. What does work is natural gas, oil, nuclear, and other things."
November 20, 2025 at 6:27 AM
Centralised energy systems gives exceptional powers to political leaders. In many countries it is politicians who decide who gets energy and who doesn't.
When autocrats lie that
"Windmills don't work... What does work is natural gas, oil, nuclear, and other things"
It means they fear losing power
When autocrats lie that
"Windmills don't work... What does work is natural gas, oil, nuclear, and other things"
It means they fear losing power
Russian oil company Lukoil owns the Teboil fuel station network in Finland.
For years local franchise operators and customers were happy to do business with the Russian oil giant, partly financing the Russian war machine.
Cheap gasoline is a powerful cure against patriotism.
yle.fi/a/74-20194952
For years local franchise operators and customers were happy to do business with the Russian oil giant, partly financing the Russian war machine.
Cheap gasoline is a powerful cure against patriotism.
yle.fi/a/74-20194952
Teboil winds down in Finland
US sanctions spelled the end for Teboil, a subsidiary of Russian oil giant Lukoil.
yle.fi
November 20, 2025 at 6:16 AM
Russian oil company Lukoil owns the Teboil fuel station network in Finland.
For years local franchise operators and customers were happy to do business with the Russian oil giant, partly financing the Russian war machine.
Cheap gasoline is a powerful cure against patriotism.
yle.fi/a/74-20194952
For years local franchise operators and customers were happy to do business with the Russian oil giant, partly financing the Russian war machine.
Cheap gasoline is a powerful cure against patriotism.
yle.fi/a/74-20194952
On a more positive note, German utilities rolled out variable #TimeOfUse grid tariffs to incentivise grid access and optimisation of flexible loads, required by #§14aEnWG
For largest DisCos the tariffs are:
High: 6 - 16 ct/kWh.
Mid: 3 -10 ct/kWh
Low: as low as 0,3 ct/kWh
www.zfk.de/politik/rech...
For largest DisCos the tariffs are:
High: 6 - 16 ct/kWh.
Mid: 3 -10 ct/kWh
Low: as low as 0,3 ct/kWh
www.zfk.de/politik/rech...
Zeitvariable Netzentgelte: Wie große Netzbetreiber Modul 3 nutzen
Kolumnistin Constanze Adolf hat die Preisblätter mehrerer Eon-Töchter und großer Stadtwerke ausgewertet – und ist zu spannenden Befunden gekommen.
www.zfk.de
November 19, 2025 at 8:17 PM
On a more positive note, German utilities rolled out variable #TimeOfUse grid tariffs to incentivise grid access and optimisation of flexible loads, required by #§14aEnWG
For largest DisCos the tariffs are:
High: 6 - 16 ct/kWh.
Mid: 3 -10 ct/kWh
Low: as low as 0,3 ct/kWh
www.zfk.de/politik/rech...
For largest DisCos the tariffs are:
High: 6 - 16 ct/kWh.
Mid: 3 -10 ct/kWh
Low: as low as 0,3 ct/kWh
www.zfk.de/politik/rech...
High temperature #HeatPumps can achieve superior COP with hybrid compression/absorption cycle, especially if the temperature differences (delta-T or "Spreizung") at the heat source and heat sink are high (10K - 40K).
COP curve of AGO Caldora compared to conventional ammonia compression heat pump:
COP curve of AGO Caldora compared to conventional ammonia compression heat pump:
November 19, 2025 at 9:08 PM
High temperature #HeatPumps can achieve superior COP with hybrid compression/absorption cycle, especially if the temperature differences (delta-T or "Spreizung") at the heat source and heat sink are high (10K - 40K).
COP curve of AGO Caldora compared to conventional ammonia compression heat pump:
COP curve of AGO Caldora compared to conventional ammonia compression heat pump: