Jan Rosenow
@janrosenow.bsky.social
Professor of Energy & Climate Policy at University of Oxford
Energy Programme Leader at ECI, University of Oxford
Senior Research Fellow at Oriel College, Oxford
Senior Associate Institute for Sustainability Leadership, University of Cambridge
Energy Programme Leader at ECI, University of Oxford
Senior Research Fellow at Oriel College, Oxford
Senior Associate Institute for Sustainability Leadership, University of Cambridge
There's an army of people out there telling us change is impossible.
Only that it is not.
10 years ago electric vehicles plaid almost no role in global car sales.
Today one in five cars sold worldwide is electric.
Only that it is not.
10 years ago electric vehicles plaid almost no role in global car sales.
Today one in five cars sold worldwide is electric.
November 11, 2025 at 10:34 AM
There's an army of people out there telling us change is impossible.
Only that it is not.
10 years ago electric vehicles plaid almost no role in global car sales.
Today one in five cars sold worldwide is electric.
Only that it is not.
10 years ago electric vehicles plaid almost no role in global car sales.
Today one in five cars sold worldwide is electric.
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.
November 11, 2025 at 8:04 AM
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.
Good news: more than 50% of the world’s economies have seen carbon emissions from fossil fuel power generation peaking. And with the speed of change in the electricity sector many more will join this growing list in coming years.
November 11, 2025 at 7:18 AM
Good news: more than 50% of the world’s economies have seen carbon emissions from fossil fuel power generation peaking. And with the speed of change in the electricity sector many more will join this growing list in coming years.
Batteries are coming to Europe. Earlier this year Europe’s largest battery storage site went live at Blackhillock, Scotland.
The facility has a capacity of 300MW/600MWh.
Much larger batteries are under development: A huge 1 GW / 4 GWh system is being constructed in Jänschwalde, Germany.
The facility has a capacity of 300MW/600MWh.
Much larger batteries are under development: A huge 1 GW / 4 GWh system is being constructed in Jänschwalde, Germany.
November 10, 2025 at 5:47 PM
Batteries are coming to Europe. Earlier this year Europe’s largest battery storage site went live at Blackhillock, Scotland.
The facility has a capacity of 300MW/600MWh.
Much larger batteries are under development: A huge 1 GW / 4 GWh system is being constructed in Jänschwalde, Germany.
The facility has a capacity of 300MW/600MWh.
Much larger batteries are under development: A huge 1 GW / 4 GWh system is being constructed in Jänschwalde, Germany.
I often read on social media that Germany just replaced nuclear with coal.
That is evidently not the case.
Coal generation is down by more than 60% over last decade with nuclear now gone.
However, Germany could have phased out coal by now if it had kept nuclear generation going at 2011 levels.
That is evidently not the case.
Coal generation is down by more than 60% over last decade with nuclear now gone.
However, Germany could have phased out coal by now if it had kept nuclear generation going at 2011 levels.
November 10, 2025 at 3:52 PM
I often read on social media that Germany just replaced nuclear with coal.
That is evidently not the case.
Coal generation is down by more than 60% over last decade with nuclear now gone.
However, Germany could have phased out coal by now if it had kept nuclear generation going at 2011 levels.
That is evidently not the case.
Coal generation is down by more than 60% over last decade with nuclear now gone.
However, Germany could have phased out coal by now if it had kept nuclear generation going at 2011 levels.
Join me in conversation with one of the world's most provocative environmental thinkers, @georgemonbiot.bsky.social. We talk climate, hope & action.
The event takes place @orieloxford.bsky.social on 21 Nov, 3:30pm. Free to attend. Book your place now: www.alumni.oriel.ox.ac.uk/events/oriel...
The event takes place @orieloxford.bsky.social on 21 Nov, 3:30pm. Free to attend. Book your place now: www.alumni.oriel.ox.ac.uk/events/oriel...
Oriel Environment Group Michaelmas 2025 — In Conversation with George Monbiot - Alumni Oriel
Climate Breakdown and Political Division: Navigating Polarisation with George Monbiot Join Professor Jan Rosenow (Jackson Senior Research Fellow, Oriel College) for a discussion with acclaimed investi...
www.alumni.oriel.ox.ac.uk
November 10, 2025 at 2:09 PM
Join me in conversation with one of the world's most provocative environmental thinkers, @georgemonbiot.bsky.social. We talk climate, hope & action.
The event takes place @orieloxford.bsky.social on 21 Nov, 3:30pm. Free to attend. Book your place now: www.alumni.oriel.ox.ac.uk/events/oriel...
The event takes place @orieloxford.bsky.social on 21 Nov, 3:30pm. Free to attend. Book your place now: www.alumni.oriel.ox.ac.uk/events/oriel...
Solar’s price drop is astonishing: panels are now 98% cheaper than when I first analyzed them in 2004.
Today, building a fence with solar can be cheaper than using wood.
Today, building a fence with solar can be cheaper than using wood.
November 10, 2025 at 8:10 AM
Solar’s price drop is astonishing: panels are now 98% cheaper than when I first analyzed them in 2004.
Today, building a fence with solar can be cheaper than using wood.
Today, building a fence with solar can be cheaper than using wood.
“Heat pumps are superior in efficiency to condensing boilers, even if the heat pumps are powered by electricity from a power station burning natural gas.”
Not me saying that but the late Prof Sir David MacKay.
More in my @carbonbrief.org article 👇
interactive.carbonbrief.org/factcheck/he...
Not me saying that but the late Prof Sir David MacKay.
More in my @carbonbrief.org article 👇
interactive.carbonbrief.org/factcheck/he...
November 9, 2025 at 9:05 PM
“Heat pumps are superior in efficiency to condensing boilers, even if the heat pumps are powered by electricity from a power station burning natural gas.”
Not me saying that but the late Prof Sir David MacKay.
More in my @carbonbrief.org article 👇
interactive.carbonbrief.org/factcheck/he...
Not me saying that but the late Prof Sir David MacKay.
More in my @carbonbrief.org article 👇
interactive.carbonbrief.org/factcheck/he...
A historic turning point for clean heating in Europe: For the first time, in the first half of 2025 sales of heat pumps in Germany have surpassed those of gas boilers.
This is a big milestone, demonstrating that the transition away from fossil fuels in our buildings is not just a future ambition.
This is a big milestone, demonstrating that the transition away from fossil fuels in our buildings is not just a future ambition.
November 9, 2025 at 2:36 PM
A historic turning point for clean heating in Europe: For the first time, in the first half of 2025 sales of heat pumps in Germany have surpassed those of gas boilers.
This is a big milestone, demonstrating that the transition away from fossil fuels in our buildings is not just a future ambition.
This is a big milestone, demonstrating that the transition away from fossil fuels in our buildings is not just a future ambition.
ICE vehicles waste a whopping 80% of the energy in their fuel. Electric vehicles are propelled by entirely different mechanisms. Energy enters the vehicle as electricity, which directly powers the drivetrain: EVs need not convert one form of energy to another resulting in much higher efficiency.
November 9, 2025 at 9:22 AM
ICE vehicles waste a whopping 80% of the energy in their fuel. Electric vehicles are propelled by entirely different mechanisms. Energy enters the vehicle as electricity, which directly powers the drivetrain: EVs need not convert one form of energy to another resulting in much higher efficiency.
Despite negative press reporting the energy transition is well underway. In the UK, we see strong demand for electric vehicles and solar panels. And the more people learn that these technologies can offer them tangible benefits the more others will adopt them too.
November 8, 2025 at 5:57 PM
Despite negative press reporting the energy transition is well underway. In the UK, we see strong demand for electric vehicles and solar panels. And the more people learn that these technologies can offer them tangible benefits the more others will adopt them too.
China’s rise as the world’s clean energy superpower is reshaping global decarbonisation. The full implications are only starting to sink in.
An important new FT piece highlights that while much of the debate has focused on how Europe and the US should respond, the bigger story might be elsewhere.
An important new FT piece highlights that while much of the debate has focused on how Europe and the US should respond, the bigger story might be elsewhere.
November 8, 2025 at 7:51 AM
China’s rise as the world’s clean energy superpower is reshaping global decarbonisation. The full implications are only starting to sink in.
An important new FT piece highlights that while much of the debate has focused on how Europe and the US should respond, the bigger story might be elsewhere.
An important new FT piece highlights that while much of the debate has focused on how Europe and the US should respond, the bigger story might be elsewhere.
We often forget how far we have come: Today almost 3/4 of EU electricity generation is from non-fossil energy sources.
It is not long ago that fossil fuels dominated the EU's electricity mix.
This year their share is approaching 1/4 of EU electricity generation.
Source is @ember-energy.org
It is not long ago that fossil fuels dominated the EU's electricity mix.
This year their share is approaching 1/4 of EU electricity generation.
Source is @ember-energy.org
November 7, 2025 at 2:19 PM
We often forget how far we have come: Today almost 3/4 of EU electricity generation is from non-fossil energy sources.
It is not long ago that fossil fuels dominated the EU's electricity mix.
This year their share is approaching 1/4 of EU electricity generation.
Source is @ember-energy.org
It is not long ago that fossil fuels dominated the EU's electricity mix.
This year their share is approaching 1/4 of EU electricity generation.
Source is @ember-energy.org
“People don’t want energy; they want hot showers and cold beer.” This is what Amory Lovins once said and so true.
Most primary energy we use is wasted in converting heat to work. We don’t have to replace all primary energy - we only need to deliver the energy services more efficiently.
Most primary energy we use is wasted in converting heat to work. We don’t have to replace all primary energy - we only need to deliver the energy services more efficiently.
November 7, 2025 at 8:57 AM
“People don’t want energy; they want hot showers and cold beer.” This is what Amory Lovins once said and so true.
Most primary energy we use is wasted in converting heat to work. We don’t have to replace all primary energy - we only need to deliver the energy services more efficiently.
Most primary energy we use is wasted in converting heat to work. We don’t have to replace all primary energy - we only need to deliver the energy services more efficiently.
GOOD NEWS: Solar and wind book again in 2025. Ember just released the latest estimates with solar and wind additions this year.
ember-energy.org/latest-insig...
ember-energy.org/latest-insig...
November 6, 2025 at 10:07 AM
GOOD NEWS: Solar and wind book again in 2025. Ember just released the latest estimates with solar and wind additions this year.
ember-energy.org/latest-insig...
ember-energy.org/latest-insig...
Trump claimed at the UN: “They [China] build them, but they have very few wind farms. So why is it that they build them and they send them all over the world, but they barely use them?”
Answer is: they actually do. China has more wind power than any other country.
Answer is: they actually do. China has more wind power than any other country.
November 5, 2025 at 4:09 PM
Trump claimed at the UN: “They [China] build them, but they have very few wind farms. So why is it that they build them and they send them all over the world, but they barely use them?”
Answer is: they actually do. China has more wind power than any other country.
Answer is: they actually do. China has more wind power than any other country.
From hard-to-abate to ready-to-innovate: Heineken has just announced a major step toward decarbonising industrial heat:
The company will install a 100 MWh thermal energy storage system near Lisbon, in partnership with @rondoenergy.bsky.social and EDP.
www.energy-storage.news/cold-beer-ho...
The company will install a 100 MWh thermal energy storage system near Lisbon, in partnership with @rondoenergy.bsky.social and EDP.
www.energy-storage.news/cold-beer-ho...
Cold beer, hot bricks: Heineken signs deals for 100MWh thermal energy storage system
Thermal energy storage (TES) startup Rondo Energy has announced its second 100MWh project within a matter of weeks, at a brewery in Portugal.
www.energy-storage.news
November 5, 2025 at 8:35 AM
From hard-to-abate to ready-to-innovate: Heineken has just announced a major step toward decarbonising industrial heat:
The company will install a 100 MWh thermal energy storage system near Lisbon, in partnership with @rondoenergy.bsky.social and EDP.
www.energy-storage.news/cold-beer-ho...
The company will install a 100 MWh thermal energy storage system near Lisbon, in partnership with @rondoenergy.bsky.social and EDP.
www.energy-storage.news/cold-beer-ho...
Critics of renewables often point to land use as a reason not to do wind & solar. Land use IS a real issue for all energy assets incl renewables unless onsite.
But what critics conveniently forget is huge land impact of fossil fuels. Aerial view of fracking sites in Texas. 👇
But what critics conveniently forget is huge land impact of fossil fuels. Aerial view of fracking sites in Texas. 👇
November 5, 2025 at 6:57 AM
Critics of renewables often point to land use as a reason not to do wind & solar. Land use IS a real issue for all energy assets incl renewables unless onsite.
But what critics conveniently forget is huge land impact of fossil fuels. Aerial view of fracking sites in Texas. 👇
But what critics conveniently forget is huge land impact of fossil fuels. Aerial view of fracking sites in Texas. 👇
For too long, industry has been labelled a “hard-to-abate” sector. It’s time to rethink that.
With rapid advances in electrification and energy efficiency, much of industry is not hard to abate — it’s ready to innovate.
With rapid advances in electrification and energy efficiency, much of industry is not hard to abate — it’s ready to innovate.
November 4, 2025 at 5:05 PM
For too long, industry has been labelled a “hard-to-abate” sector. It’s time to rethink that.
With rapid advances in electrification and energy efficiency, much of industry is not hard to abate — it’s ready to innovate.
With rapid advances in electrification and energy efficiency, much of industry is not hard to abate — it’s ready to innovate.
I never paid any attention to the Stanford University database of the top 2% most cited scientists worldwide but apparently I have been included since 2021...
November 3, 2025 at 12:23 PM
I never paid any attention to the Stanford University database of the top 2% most cited scientists worldwide but apparently I have been included since 2021...
Europe’s gas prices are still far above the U.S.
Sept 2025: $11.1 vs $3.0 per MMBtu — nearly 4× higher.
Even before the crisis, Europe paid more.
The only lasting fix? Less gas, more renewable energy, more efficiency and more clean electrification. ⚡️
Sept 2025: $11.1 vs $3.0 per MMBtu — nearly 4× higher.
Even before the crisis, Europe paid more.
The only lasting fix? Less gas, more renewable energy, more efficiency and more clean electrification. ⚡️
November 2, 2025 at 3:33 PM
Europe’s gas prices are still far above the U.S.
Sept 2025: $11.1 vs $3.0 per MMBtu — nearly 4× higher.
Even before the crisis, Europe paid more.
The only lasting fix? Less gas, more renewable energy, more efficiency and more clean electrification. ⚡️
Sept 2025: $11.1 vs $3.0 per MMBtu — nearly 4× higher.
Even before the crisis, Europe paid more.
The only lasting fix? Less gas, more renewable energy, more efficiency and more clean electrification. ⚡️
Reposted by Jan Rosenow
Where is the energy transition headed?
In my recent conversation with El Pais, I discussed the major challenges and opportunities in Europe’s energy transition, focusing on electrification, taxation, and policy alignment.
elpais.com/extra/energi...
In my recent conversation with El Pais, I discussed the major challenges and opportunities in Europe’s energy transition, focusing on electrification, taxation, and policy alignment.
elpais.com/extra/energi...
Jan Rosenow: “Si la electricidad tiene una carga fiscal mayor que los combustibles fósiles se desalienta su uso”
El profesor de la Universidad de Oxford, asesor de la UE y gurú informático advierte “sobre el error de Alemania de cerrar las nucleares antes de terminar con las plantas de carbón”
elpais.com
November 2, 2025 at 9:45 AM
Where is the energy transition headed?
In my recent conversation with El Pais, I discussed the major challenges and opportunities in Europe’s energy transition, focusing on electrification, taxation, and policy alignment.
elpais.com/extra/energi...
In my recent conversation with El Pais, I discussed the major challenges and opportunities in Europe’s energy transition, focusing on electrification, taxation, and policy alignment.
elpais.com/extra/energi...
Where is the energy transition headed?
In my recent conversation with El Pais, I discussed the major challenges and opportunities in Europe’s energy transition, focusing on electrification, taxation, and policy alignment.
elpais.com/extra/energi...
In my recent conversation with El Pais, I discussed the major challenges and opportunities in Europe’s energy transition, focusing on electrification, taxation, and policy alignment.
elpais.com/extra/energi...
Jan Rosenow: “Si la electricidad tiene una carga fiscal mayor que los combustibles fósiles se desalienta su uso”
El profesor de la Universidad de Oxford, asesor de la UE y gurú informático advierte “sobre el error de Alemania de cerrar las nucleares antes de terminar con las plantas de carbón”
elpais.com
November 2, 2025 at 9:45 AM
Where is the energy transition headed?
In my recent conversation with El Pais, I discussed the major challenges and opportunities in Europe’s energy transition, focusing on electrification, taxation, and policy alignment.
elpais.com/extra/energi...
In my recent conversation with El Pais, I discussed the major challenges and opportunities in Europe’s energy transition, focusing on electrification, taxation, and policy alignment.
elpais.com/extra/energi...
Industrial electrification is the new frontier: Next week I will give the opening keynote at one of Europe’s leading events on Industrial Heat Pumps in the heart of Prague.
November 1, 2025 at 11:09 AM
Industrial electrification is the new frontier: Next week I will give the opening keynote at one of Europe’s leading events on Industrial Heat Pumps in the heart of Prague.
The underlying fundamental economics have changed dramatically: solar is now so cheap that businesses and households all around the world install it often without subsidies. Throw in batteries and the business case just keeps improving.
November 1, 2025 at 9:08 AM
The underlying fundamental economics have changed dramatically: solar is now so cheap that businesses and households all around the world install it often without subsidies. Throw in batteries and the business case just keeps improving.