Johan Lilliestam
@jlilliestam.bsky.social
Berliner, Swede, European. Professor of Sustainability Transition Policy @unifau.bsky.social doing energy and climate transition policy stuff. And drinking coffee.
I wonder how that went… ah well.
EU
"This is the COP of truth and any attempt to push back on the importance of the best available science, as assessed by the IPCC, is an attack to the essential information needed by us all, to protect ourselves and this planet"
"This is the COP of truth and any attempt to push back on the importance of the best available science, as assessed by the IPCC, is an attack to the essential information needed by us all, to protect ourselves and this planet"
November 24, 2025 at 6:52 AM
I wonder how that went… ah well.
Reposted by Johan Lilliestam
7/ Our key policy messages:
1️⃣ Variable renewables are the backbone
2️⃣ Electrification requires technology clarity, not technology neutrality
1️⃣ Variable renewables are the backbone
2️⃣ Electrification requires technology clarity, not technology neutrality
October 29, 2025 at 9:34 PM
7/ Our key policy messages:
1️⃣ Variable renewables are the backbone
2️⃣ Electrification requires technology clarity, not technology neutrality
1️⃣ Variable renewables are the backbone
2️⃣ Electrification requires technology clarity, not technology neutrality
Reposted by Johan Lilliestam
The car crisis tops today’s EU summit but leaders keep staring at the wrong problem
The issue isn’t the 2035 engine ban - it’s demand falling off a cliff today
With @sandertordoir.bsky.social and @lucasguttenberg.bsky.social, we show why flipping regs won’t help - and what the EU can do instead.
The issue isn’t the 2035 engine ban - it’s demand falling off a cliff today
With @sandertordoir.bsky.social and @lucasguttenberg.bsky.social, we show why flipping regs won’t help - and what the EU can do instead.
October 23, 2025 at 8:04 AM
The car crisis tops today’s EU summit but leaders keep staring at the wrong problem
The issue isn’t the 2035 engine ban - it’s demand falling off a cliff today
With @sandertordoir.bsky.social and @lucasguttenberg.bsky.social, we show why flipping regs won’t help - and what the EU can do instead.
The issue isn’t the 2035 engine ban - it’s demand falling off a cliff today
With @sandertordoir.bsky.social and @lucasguttenberg.bsky.social, we show why flipping regs won’t help - and what the EU can do instead.
Reposted by Johan Lilliestam
Wie können die Wünsche der Bevölkerung in Planung von #Energiesystemen einbezogen werden? Dem widmete sich ein Team v. ETH Zürich, FAU & @rifs-potsdam.bsky.social Es hat einen Ansatz entwickelt, der nicht nur technische und wirtschaftliche Aspekte einbezieht: www.rifs-potsdam.de/de/news/euro...
Europa wählt Importunabhängigkeit und Solarenergie
www.rifs-potsdam.de
October 22, 2025 at 9:33 AM
Wie können die Wünsche der Bevölkerung in Planung von #Energiesystemen einbezogen werden? Dem widmete sich ein Team v. ETH Zürich, FAU & @rifs-potsdam.bsky.social Es hat einen Ansatz entwickelt, der nicht nur technische und wirtschaftliche Aspekte einbezieht: www.rifs-potsdam.de/de/news/euro...
Reposted by Johan Lilliestam
The energy transition can seem like a daunting challenge: how can we transform the polluting machines in so many parts of our economy in such short order?
Today we’re launching our report "First build, then break: a policy framework for accelerating zero-carbon transitions".
Today we’re launching our report "First build, then break: a policy framework for accelerating zero-carbon transitions".
October 13, 2025 at 4:09 PM
The energy transition can seem like a daunting challenge: how can we transform the polluting machines in so many parts of our economy in such short order?
Today we’re launching our report "First build, then break: a policy framework for accelerating zero-carbon transitions".
Today we’re launching our report "First build, then break: a policy framework for accelerating zero-carbon transitions".
Now that the European Parliament wants to ban tofu sausage - what will happen to salami prezels? If sausage must be made of meat, do prezels now also have to be made of meat?
October 8, 2025 at 1:39 PM
Now that the European Parliament wants to ban tofu sausage - what will happen to salami prezels? If sausage must be made of meat, do prezels now also have to be made of meat?
Reposted by Johan Lilliestam
New paper with @glenpeters.bsky.social in Nature Communications today. We show how models and studies with a lot of scenarios in the IPCC scenarios database have a large impact on key findings, including emissions reductions, net-zero GHG year, and coal, gas, and oil consistent with 1.5°C.
Influence of individual models and studies on quantitative mitigation findings in the IPCC Sixth Assessment Report - Nature Communications
The paper analyses the impact of the uneven representation of models and studies on key mitigation findings in the IPCC Sixth Assessment Report. It finds that the model with the most scenarios has a considerable influence on several findings.
www.nature.com
October 2, 2025 at 10:10 AM
New paper with @glenpeters.bsky.social in Nature Communications today. We show how models and studies with a lot of scenarios in the IPCC scenarios database have a large impact on key findings, including emissions reductions, net-zero GHG year, and coal, gas, and oil consistent with 1.5°C.
Reposted by Johan Lilliestam
The oldest trick in the climate delay playbook:
1. Rule out all other measures as unnecessary and counterproductive because we will introduce CO2 pricing
2. Then rule out CO2 pricing because it would make things unaffordable
3. Checkmate
1. Rule out all other measures as unnecessary and counterproductive because we will introduce CO2 pricing
2. Then rule out CO2 pricing because it would make things unaffordable
3. Checkmate
German Conservatives call for ditching the 2035 phaseout of fossil fuel vehicle sales, arguing that we (will) price CO2 with ETS2, so no other measure is needed
But the minute ETS2 starts in 2027 and makes fuel more expensive, they *will* campaign against it, mark my words
But the minute ETS2 starts in 2027 and makes fuel more expensive, they *will* campaign against it, mark my words
September 10, 2025 at 7:07 AM
The oldest trick in the climate delay playbook:
1. Rule out all other measures as unnecessary and counterproductive because we will introduce CO2 pricing
2. Then rule out CO2 pricing because it would make things unaffordable
3. Checkmate
1. Rule out all other measures as unnecessary and counterproductive because we will introduce CO2 pricing
2. Then rule out CO2 pricing because it would make things unaffordable
3. Checkmate
Reposted by Johan Lilliestam
Prof. Dr. Johan Lilliestam, Inhaber des Lehrstuhls für Sustainability Transition Policy an der FAU WiSo, ist vom Weltklimarat (IPCC) als Leitautor für den kommenden Siebten Bewertungsbericht (AR7) berufen worden. 👏 Weitere Informationen gibt es hier: go.fau.de/1cacb
@fau.de @jlilliestam.bsky.social
@fau.de @jlilliestam.bsky.social
September 9, 2025 at 1:17 PM
Prof. Dr. Johan Lilliestam, Inhaber des Lehrstuhls für Sustainability Transition Policy an der FAU WiSo, ist vom Weltklimarat (IPCC) als Leitautor für den kommenden Siebten Bewertungsbericht (AR7) berufen worden. 👏 Weitere Informationen gibt es hier: go.fau.de/1cacb
@fau.de @jlilliestam.bsky.social
@fau.de @jlilliestam.bsky.social
Reposted by Johan Lilliestam
Excited to share my new article on EU energy solidarity published in the @jei-publication.bsky.social. You can find the article here: www.tandfonline.com/doi/full/10....
September 2, 2025 at 10:44 AM
Excited to share my new article on EU energy solidarity published in the @jei-publication.bsky.social. You can find the article here: www.tandfonline.com/doi/full/10....
Reposted by Johan Lilliestam
Viele nationale CO2-Steuern sind zu niedrig, um Emissionen wirksam zu senken, und dienen primär symbolischen und fiskalischen Zielen. Das zeigt eine aktuelle Studie der FAU Erlangen-Nürnberg, der Universität Potsdam und des RIFS Potsdam.
Weitere Infos: go.fau.de/1ca-i
@fau.de
Weitere Infos: go.fau.de/1ca-i
@fau.de
August 25, 2025 at 8:13 AM
Viele nationale CO2-Steuern sind zu niedrig, um Emissionen wirksam zu senken, und dienen primär symbolischen und fiskalischen Zielen. Das zeigt eine aktuelle Studie der FAU Erlangen-Nürnberg, der Universität Potsdam und des RIFS Potsdam.
Weitere Infos: go.fau.de/1ca-i
@fau.de
Weitere Infos: go.fau.de/1ca-i
@fau.de
Reposted by Johan Lilliestam
The #IPCC has announced the authors selected for its Seventh Assessment Report.
664 experts from 111 countries have been invited to participate as Coordinating Lead Authors, Lead Authors, & Review Editors.
🌍 51% from developing countries
🚺 46% women
🔗 bit.ly/AR7AuthorsPR
664 experts from 111 countries have been invited to participate as Coordinating Lead Authors, Lead Authors, & Review Editors.
🌍 51% from developing countries
🚺 46% women
🔗 bit.ly/AR7AuthorsPR
August 18, 2025 at 1:09 PM
The #IPCC has announced the authors selected for its Seventh Assessment Report.
664 experts from 111 countries have been invited to participate as Coordinating Lead Authors, Lead Authors, & Review Editors.
🌍 51% from developing countries
🚺 46% women
🔗 bit.ly/AR7AuthorsPR
664 experts from 111 countries have been invited to participate as Coordinating Lead Authors, Lead Authors, & Review Editors.
🌍 51% from developing countries
🚺 46% women
🔗 bit.ly/AR7AuthorsPR
Reposted by Johan Lilliestam
Europe’s car industry may have just dodged a +25% US tariff – but this is no reason to relax. Deep structural challenges remain, and the EU lacks a common diagnosis for fixing them.
My new policy paper argues that a coherent EU strategy needs to rest on three uncomfortable truths: 🧵
My new policy paper argues that a coherent EU strategy needs to rest on three uncomfortable truths: 🧵
Europe’s Car Industry in Transition: Stuck in Neutral or Shifting into Gear?
Europe’s automotive industry is entering a decisive decade but lacks a clear map for navigating it. While global competitors accelerate their shift toward electric vehicles, Europe’s strategic focus r...
www.delorscentre.eu
July 30, 2025 at 9:33 AM
Europe’s car industry may have just dodged a +25% US tariff – but this is no reason to relax. Deep structural challenges remain, and the EU lacks a common diagnosis for fixing them.
My new policy paper argues that a coherent EU strategy needs to rest on three uncomfortable truths: 🧵
My new policy paper argues that a coherent EU strategy needs to rest on three uncomfortable truths: 🧵
Reposted by Johan Lilliestam
This year's @irena-official.bsky.social cost report is missing my favourite figure on LCOE, so I replicated it with their data + Lazard for NGCC 👇
Please @irena-official.bsky.social add it again next year!
#EnergySky
Please @irena-official.bsky.social add it again next year!
#EnergySky
July 30, 2025 at 9:06 AM
This year's @irena-official.bsky.social cost report is missing my favourite figure on LCOE, so I replicated it with their data + Lazard for NGCC 👇
Please @irena-official.bsky.social add it again next year!
#EnergySky
Please @irena-official.bsky.social add it again next year!
#EnergySky
Reposted by Johan Lilliestam
🚨 NEW RESEARCH: The energy transition is more disruptive—and could move much faster—than most people think.
It’s not just about swapping old tech for new.
Shift to clean energy is a complex web of feedback loops, tipping points & surprises.
Our new 📖 👇
www.scurveeconomics.org/publications...
🧵
It’s not just about swapping old tech for new.
Shift to clean energy is a complex web of feedback loops, tipping points & surprises.
Our new 📖 👇
www.scurveeconomics.org/publications...
🧵
June 5, 2025 at 2:32 PM
🚨 NEW RESEARCH: The energy transition is more disruptive—and could move much faster—than most people think.
It’s not just about swapping old tech for new.
Shift to clean energy is a complex web of feedback loops, tipping points & surprises.
Our new 📖 👇
www.scurveeconomics.org/publications...
🧵
It’s not just about swapping old tech for new.
Shift to clean energy is a complex web of feedback loops, tipping points & surprises.
Our new 📖 👇
www.scurveeconomics.org/publications...
🧵
Reposted by Johan Lilliestam
What is the role of the state in getting to net-zero emissions? A fabulous crew of wise, knowledgeable, friendly and generous scholars met in Paris earlier this week to read each others’ work and discuss this. And wow, we really did learn a lot from each other!
May 28, 2025 at 7:48 AM
What is the role of the state in getting to net-zero emissions? A fabulous crew of wise, knowledgeable, friendly and generous scholars met in Paris earlier this week to read each others’ work and discuss this. And wow, we really did learn a lot from each other!
Reposted by Johan Lilliestam
What if we had no electricity and everything ran on fossil fuels?
This ad keeps making me chuckle.
Enjoy if you have not seen it or rewatch as it is just gold!
This ad keeps making me chuckle.
Enjoy if you have not seen it or rewatch as it is just gold!
April 30, 2025 at 1:58 PM
What if we had no electricity and everything ran on fossil fuels?
This ad keeps making me chuckle.
Enjoy if you have not seen it or rewatch as it is just gold!
This ad keeps making me chuckle.
Enjoy if you have not seen it or rewatch as it is just gold!
Reposted by Johan Lilliestam
For decades, forecasts of a clean hydrogen economy have relied on rapid scale-up driving down costs. However, production costs are dominated by engineering and energy, and supplemented by transport, storage & usage costs which seem unlikely to exhibit rapid reductions.
www.nature.com/articles/s44...
www.nature.com/articles/s44...
Realistic roles for hydrogen in the future energy transition - Nature Reviews Clean Technology
Hydrogen has been proposed as a fuel for widespread use since the 1970s, but uptake has repeatedly fallen below projections, primarily due to high costs. This Perspective considers hydrogen’s potentia...
www.nature.com
April 22, 2025 at 9:23 PM
For decades, forecasts of a clean hydrogen economy have relied on rapid scale-up driving down costs. However, production costs are dominated by engineering and energy, and supplemented by transport, storage & usage costs which seem unlikely to exhibit rapid reductions.
www.nature.com/articles/s44...
www.nature.com/articles/s44...
Reposted by Johan Lilliestam
🚨 New paper drop
Must-read by a stellar group incl. @mliebreich.bsky.social, @iain-staffell.bsky.social
H2 isn’t silver bullet it’s made out to be. It has a role—just not everywhere.
Best bets: parts of industry, long-haul, storage
Not useful: home heating, cars
www.nature.com/articles/s44...
Must-read by a stellar group incl. @mliebreich.bsky.social, @iain-staffell.bsky.social
H2 isn’t silver bullet it’s made out to be. It has a role—just not everywhere.
Best bets: parts of industry, long-haul, storage
Not useful: home heating, cars
www.nature.com/articles/s44...
April 22, 2025 at 3:39 PM
🚨 New paper drop
Must-read by a stellar group incl. @mliebreich.bsky.social, @iain-staffell.bsky.social
H2 isn’t silver bullet it’s made out to be. It has a role—just not everywhere.
Best bets: parts of industry, long-haul, storage
Not useful: home heating, cars
www.nature.com/articles/s44...
Must-read by a stellar group incl. @mliebreich.bsky.social, @iain-staffell.bsky.social
H2 isn’t silver bullet it’s made out to be. It has a role—just not everywhere.
Best bets: parts of industry, long-haul, storage
Not useful: home heating, cars
www.nature.com/articles/s44...
Reposted by Johan Lilliestam
Aus der Ferne kaum sichtbar, sieht man hier einen Energiespeicher mit 3300MWh Energieinhalt (nahe Kopenhagen). Zum Vergleich: das ist knapp mehr als alle Batteriegroßspeicher D zusammen. Allerdings nicht in Form von Strom, sondern nur Wärme als simples Warmwasser. 1/
April 10, 2025 at 7:15 AM
Aus der Ferne kaum sichtbar, sieht man hier einen Energiespeicher mit 3300MWh Energieinhalt (nahe Kopenhagen). Zum Vergleich: das ist knapp mehr als alle Batteriegroßspeicher D zusammen. Allerdings nicht in Form von Strom, sondern nur Wärme als simples Warmwasser. 1/
Reposted by Johan Lilliestam
It is time to abandon student evaluations of teaching
Comment by Gordon Hodson (@gordonhodsonphd.bsky.social)
Web: go.nature.com/4jfAzXo
PDF: rdcu.be/ef9y5
Comment by Gordon Hodson (@gordonhodsonphd.bsky.social)
Web: go.nature.com/4jfAzXo
PDF: rdcu.be/ef9y5
April 2, 2025 at 2:51 PM
It is time to abandon student evaluations of teaching
Comment by Gordon Hodson (@gordonhodsonphd.bsky.social)
Web: go.nature.com/4jfAzXo
PDF: rdcu.be/ef9y5
Comment by Gordon Hodson (@gordonhodsonphd.bsky.social)
Web: go.nature.com/4jfAzXo
PDF: rdcu.be/ef9y5
Reposted by Johan Lilliestam
Never make the same mistake twice
EU had to learn painfully 10y ago: Allowing carbon credits from abroad into emission trading system destroyed its effect completely. That is why they were banned.
Allowing them back in would be a gigantic step backwards
www.cleanenergywire.org/news/conserv...
EU had to learn painfully 10y ago: Allowing carbon credits from abroad into emission trading system destroyed its effect completely. That is why they were banned.
Allowing them back in would be a gigantic step backwards
www.cleanenergywire.org/news/conserv...
Conservative proposal for offsetting Germany's emissions outside the EU eyed critically by climate researchers
www.cleanenergywire.org
April 1, 2025 at 11:40 AM
Never make the same mistake twice
EU had to learn painfully 10y ago: Allowing carbon credits from abroad into emission trading system destroyed its effect completely. That is why they were banned.
Allowing them back in would be a gigantic step backwards
www.cleanenergywire.org/news/conserv...
EU had to learn painfully 10y ago: Allowing carbon credits from abroad into emission trading system destroyed its effect completely. That is why they were banned.
Allowing them back in would be a gigantic step backwards
www.cleanenergywire.org/news/conserv...
Reposted by Johan Lilliestam
Meanwhile, what is going on in Sweden? Today we, the professors in the Swedish Climate Policy Council, presented our report. We have assessed whether Sweden is on its way to meet its climate targets, national targets and EU targets. Main conclusion: we are worried. This 🧵 with a short summary.
March 20, 2025 at 7:07 PM
Meanwhile, what is going on in Sweden? Today we, the professors in the Swedish Climate Policy Council, presented our report. We have assessed whether Sweden is on its way to meet its climate targets, national targets and EU targets. Main conclusion: we are worried. This 🧵 with a short summary.
Reposted by Johan Lilliestam
A brief 🧵 on some takes and myths around the collapse of Northvolt:
The collapse of Northvolt has sparked lots of speculation of what caused the collapse:
1. Competition from China
2. Excessive state aid bloating the project
3. Poor management
Let's discuss each in turn
1/x
The collapse of Northvolt has sparked lots of speculation of what caused the collapse:
1. Competition from China
2. Excessive state aid bloating the project
3. Poor management
Let's discuss each in turn
1/x
March 13, 2025 at 9:23 AM
A brief 🧵 on some takes and myths around the collapse of Northvolt:
The collapse of Northvolt has sparked lots of speculation of what caused the collapse:
1. Competition from China
2. Excessive state aid bloating the project
3. Poor management
Let's discuss each in turn
1/x
The collapse of Northvolt has sparked lots of speculation of what caused the collapse:
1. Competition from China
2. Excessive state aid bloating the project
3. Poor management
Let's discuss each in turn
1/x
Reposted by Johan Lilliestam
Die Verkäufe von Twitter und WaPo sollten eigentlich allen zeigen: Es geht nicht ohne einen öffentlichen Rundfunk, der allen gehört und durch alle kontrolliert wird. Man mag sich täglich ärgern, aber alle Alternativen sind schlechter.
March 3, 2025 at 7:59 AM
Die Verkäufe von Twitter und WaPo sollten eigentlich allen zeigen: Es geht nicht ohne einen öffentlichen Rundfunk, der allen gehört und durch alle kontrolliert wird. Man mag sich täglich ärgern, aber alle Alternativen sind schlechter.