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
The energy transition happens often in unlikely places at unprecedented rates.
Take Nepal: Over the past year, electric vehicles accounted for 76 percent of all passenger vehicles and half of the light commercial vehicles sold in Nepal.
Five years ago, that number was essentially zero.
Take Nepal: Over the past year, electric vehicles accounted for 76 percent of all passenger vehicles and half of the light commercial vehicles sold in Nepal.
Five years ago, that number was essentially zero.
November 24, 2025 at 6:41 PM
The energy transition happens often in unlikely places at unprecedented rates.
Take Nepal: Over the past year, electric vehicles accounted for 76 percent of all passenger vehicles and half of the light commercial vehicles sold in Nepal.
Five years ago, that number was essentially zero.
Take Nepal: Over the past year, electric vehicles accounted for 76 percent of all passenger vehicles and half of the light commercial vehicles sold in Nepal.
Five years ago, that number was essentially zero.
This is such a useful heuristic device - the 6 phases of renewable energy integration: @iea.org lays out typical challenges and examples of how countries have addressed them.
There are already several examples of countries entering the high phases (4-6).
iea.blob.core.windows.net/assets/fbffb...
There are already several examples of countries entering the high phases (4-6).
iea.blob.core.windows.net/assets/fbffb...
November 24, 2025 at 4:18 PM
This is such a useful heuristic device - the 6 phases of renewable energy integration: @iea.org lays out typical challenges and examples of how countries have addressed them.
There are already several examples of countries entering the high phases (4-6).
iea.blob.core.windows.net/assets/fbffb...
There are already several examples of countries entering the high phases (4-6).
iea.blob.core.windows.net/assets/fbffb...
The fashion industry is ready to innovate. Epic Group’s move to install high-temperature heat pumps is a real step toward fossil-free fashion.
Earlier this year I worked with Fashion Revolution on huge opportunity for heat electrification. Great to see momentum. www.just-style.com/news/epic-gr...
Earlier this year I worked with Fashion Revolution on huge opportunity for heat electrification. Great to see momentum. www.just-style.com/news/epic-gr...
Epic Group drives carbon-free apparel manufacturing with heat pumps in India
Epic Group has installed high-temperature industrial heat pumps at its apparel manufacturing facility in Bhubaneswar, India.
www.just-style.com
November 24, 2025 at 10:27 AM
The fashion industry is ready to innovate. Epic Group’s move to install high-temperature heat pumps is a real step toward fossil-free fashion.
Earlier this year I worked with Fashion Revolution on huge opportunity for heat electrification. Great to see momentum. www.just-style.com/news/epic-gr...
Earlier this year I worked with Fashion Revolution on huge opportunity for heat electrification. Great to see momentum. www.just-style.com/news/epic-gr...
Most people hear “heat pump” and think of small air-source units at home. But Germany is building one of the world’s largest heat pumps in Mannheim: a 162 MW river-source system using heat from the Rhine.
Big reminder that heat-pumps scale far beyond households — they can decarbonise whole cities.
Big reminder that heat-pumps scale far beyond households — they can decarbonise whole cities.
November 24, 2025 at 8:28 AM
Most people hear “heat pump” and think of small air-source units at home. But Germany is building one of the world’s largest heat pumps in Mannheim: a 162 MW river-source system using heat from the Rhine.
Big reminder that heat-pumps scale far beyond households — they can decarbonise whole cities.
Big reminder that heat-pumps scale far beyond households — they can decarbonise whole cities.
Battery recycling is expected to become a cornerstone of the global energy transition as electric vehicles (EVs) and other battery-powered technologies become more widespread.
China holds a dominant position in both the pre-treatment and refining stages of battery recycling.
China holds a dominant position in both the pre-treatment and refining stages of battery recycling.
November 23, 2025 at 9:23 AM
Battery recycling is expected to become a cornerstone of the global energy transition as electric vehicles (EVs) and other battery-powered technologies become more widespread.
China holds a dominant position in both the pre-treatment and refining stages of battery recycling.
China holds a dominant position in both the pre-treatment and refining stages of battery recycling.
Heat pumps are the most efficiency heating technology ever invented.
That's because they harvest, compress and transport pre-existing heat from the air, the ground or the water.
Compared to a gas boiler heat pumps deliver ~4x more heat for each unit of energy inout.
That's because they harvest, compress and transport pre-existing heat from the air, the ground or the water.
Compared to a gas boiler heat pumps deliver ~4x more heat for each unit of energy inout.
November 21, 2025 at 10:40 AM
Heat pumps are the most efficiency heating technology ever invented.
That's because they harvest, compress and transport pre-existing heat from the air, the ground or the water.
Compared to a gas boiler heat pumps deliver ~4x more heat for each unit of energy inout.
That's because they harvest, compress and transport pre-existing heat from the air, the ground or the water.
Compared to a gas boiler heat pumps deliver ~4x more heat for each unit of energy inout.
Global investment in electrification in the transport sector has increased markedly over the last 7years.
Building electrification investment is up too but has been growing at a much slower pace.
There is some catching up to do.
Building electrification investment is up too but has been growing at a much slower pace.
There is some catching up to do.
November 21, 2025 at 7:36 AM
Global investment in electrification in the transport sector has increased markedly over the last 7years.
Building electrification investment is up too but has been growing at a much slower pace.
There is some catching up to do.
Building electrification investment is up too but has been growing at a much slower pace.
There is some catching up to do.
Solar capacity is expected to triple based on new projects in the pipeline.
Total global solar capacity, including all projects in construction and planned, is expected to reach almost 3 terawatts, with 80% concentrated in just 15 countries.
Data @globalenergymon.bsky.social
Total global solar capacity, including all projects in construction and planned, is expected to reach almost 3 terawatts, with 80% concentrated in just 15 countries.
Data @globalenergymon.bsky.social
November 21, 2025 at 6:51 AM
Solar capacity is expected to triple based on new projects in the pipeline.
Total global solar capacity, including all projects in construction and planned, is expected to reach almost 3 terawatts, with 80% concentrated in just 15 countries.
Data @globalenergymon.bsky.social
Total global solar capacity, including all projects in construction and planned, is expected to reach almost 3 terawatts, with 80% concentrated in just 15 countries.
Data @globalenergymon.bsky.social
First electric cars and buses, now trucks: in the past we were often told that electric trucks would not be feasible.
But the market is picking up speed and electric trucks have become a reality. Expectations are for significant market expansion in the coming years.
But the market is picking up speed and electric trucks have become a reality. Expectations are for significant market expansion in the coming years.
November 20, 2025 at 12:11 PM
First electric cars and buses, now trucks: in the past we were often told that electric trucks would not be feasible.
But the market is picking up speed and electric trucks have become a reality. Expectations are for significant market expansion in the coming years.
But the market is picking up speed and electric trucks have become a reality. Expectations are for significant market expansion in the coming years.
🚀 Huge step forward for decarbonising heat: Construction has started on world’s largest seasonal thermal energy storage facility in Vantaa, Finland.
Massive underground caverns will store 1.1m m³ of hot water — around 90 GWh of heat, enough to warm an entire town through winter.
Massive underground caverns will store 1.1m m³ of hot water — around 90 GWh of heat, enough to warm an entire town through winter.
November 19, 2025 at 2:43 PM
🚀 Huge step forward for decarbonising heat: Construction has started on world’s largest seasonal thermal energy storage facility in Vantaa, Finland.
Massive underground caverns will store 1.1m m³ of hot water — around 90 GWh of heat, enough to warm an entire town through winter.
Massive underground caverns will store 1.1m m³ of hot water — around 90 GWh of heat, enough to warm an entire town through winter.
Reposted by Jan Rosenow
NEW RESEARCH:
Demand flexibility becomes more and more attractive.
We found a whopping 480 smart tariffs and services across Europe — a 3x increase since our 2021/2022 study.
www.sciencedirect.com/science/arti...
@jaapburger.eu @regassistproj.bsky.social @ecioxford.bsky.social
Demand flexibility becomes more and more attractive.
We found a whopping 480 smart tariffs and services across Europe — a 3x increase since our 2021/2022 study.
www.sciencedirect.com/science/arti...
@jaapburger.eu @regassistproj.bsky.social @ecioxford.bsky.social
November 19, 2025 at 8:15 AM
NEW RESEARCH:
Demand flexibility becomes more and more attractive.
We found a whopping 480 smart tariffs and services across Europe — a 3x increase since our 2021/2022 study.
www.sciencedirect.com/science/arti...
@jaapburger.eu @regassistproj.bsky.social @ecioxford.bsky.social
Demand flexibility becomes more and more attractive.
We found a whopping 480 smart tariffs and services across Europe — a 3x increase since our 2021/2022 study.
www.sciencedirect.com/science/arti...
@jaapburger.eu @regassistproj.bsky.social @ecioxford.bsky.social
Reposted by Jan Rosenow
Smart Tariffs are a game changer for the financial benefits of heat-pumps, household batteries and battery electric vehicles.
We've cut our household energy, heating and transport costs to 39% of what they were before we fully electrified our house and car.
The primary reason is Smart Tariffs.
We've cut our household energy, heating and transport costs to 39% of what they were before we fully electrified our house and car.
The primary reason is Smart Tariffs.
NEW RESEARCH:
Demand flexibility becomes more and more attractive.
We found a whopping 480 smart tariffs and services across Europe — a 3x increase since our 2021/2022 study.
www.sciencedirect.com/science/arti...
@jaapburger.eu @regassistproj.bsky.social @ecioxford.bsky.social
Demand flexibility becomes more and more attractive.
We found a whopping 480 smart tariffs and services across Europe — a 3x increase since our 2021/2022 study.
www.sciencedirect.com/science/arti...
@jaapburger.eu @regassistproj.bsky.social @ecioxford.bsky.social
November 19, 2025 at 9:26 AM
Smart Tariffs are a game changer for the financial benefits of heat-pumps, household batteries and battery electric vehicles.
We've cut our household energy, heating and transport costs to 39% of what they were before we fully electrified our house and car.
The primary reason is Smart Tariffs.
We've cut our household energy, heating and transport costs to 39% of what they were before we fully electrified our house and car.
The primary reason is Smart Tariffs.
Reposted by Jan Rosenow
Very glad to see our joint paper on smart tariffs and services in Europe now published!
What do these tariffs do, where are they emerging and what inputs do they use to optimise EV charging, heating and other household loads?
What do these tariffs do, where are they emerging and what inputs do they use to optimise EV charging, heating and other household loads?
NEW RESEARCH:
Demand flexibility becomes more and more attractive.
We found a whopping 480 smart tariffs and services across Europe — a 3x increase since our 2021/2022 study.
www.sciencedirect.com/science/arti...
@jaapburger.eu @regassistproj.bsky.social @ecioxford.bsky.social
Demand flexibility becomes more and more attractive.
We found a whopping 480 smart tariffs and services across Europe — a 3x increase since our 2021/2022 study.
www.sciencedirect.com/science/arti...
@jaapburger.eu @regassistproj.bsky.social @ecioxford.bsky.social
November 19, 2025 at 8:22 AM
Very glad to see our joint paper on smart tariffs and services in Europe now published!
What do these tariffs do, where are they emerging and what inputs do they use to optimise EV charging, heating and other household loads?
What do these tariffs do, where are they emerging and what inputs do they use to optimise EV charging, heating and other household loads?
NEW RESEARCH:
Demand flexibility becomes more and more attractive.
We found a whopping 480 smart tariffs and services across Europe — a 3x increase since our 2021/2022 study.
www.sciencedirect.com/science/arti...
@jaapburger.eu @regassistproj.bsky.social @ecioxford.bsky.social
Demand flexibility becomes more and more attractive.
We found a whopping 480 smart tariffs and services across Europe — a 3x increase since our 2021/2022 study.
www.sciencedirect.com/science/arti...
@jaapburger.eu @regassistproj.bsky.social @ecioxford.bsky.social
November 19, 2025 at 8:15 AM
NEW RESEARCH:
Demand flexibility becomes more and more attractive.
We found a whopping 480 smart tariffs and services across Europe — a 3x increase since our 2021/2022 study.
www.sciencedirect.com/science/arti...
@jaapburger.eu @regassistproj.bsky.social @ecioxford.bsky.social
Demand flexibility becomes more and more attractive.
We found a whopping 480 smart tariffs and services across Europe — a 3x increase since our 2021/2022 study.
www.sciencedirect.com/science/arti...
@jaapburger.eu @regassistproj.bsky.social @ecioxford.bsky.social
10 years ago hydrogen buses were hyped and many cities ordered them.
Today the picture is clear: electric buses rule, hydrogen buses whither.
Today the picture is clear: electric buses rule, hydrogen buses whither.
November 18, 2025 at 7:39 PM
10 years ago hydrogen buses were hyped and many cities ordered them.
Today the picture is clear: electric buses rule, hydrogen buses whither.
Today the picture is clear: electric buses rule, hydrogen buses whither.
Seems like Bluesky also introduced verification/ blue tick but not one you can buy so more like the old Twitter one.
November 18, 2025 at 6:20 PM
Seems like Bluesky also introduced verification/ blue tick but not one you can buy so more like the old Twitter one.
Europe's electricity system is changing rapidly and often in places that don't make the headlines.
Look at Estonia - not that long ago and fossil fuels dominated around 90% of electricity generation.
Today solar and wind eat more and more into the share of fossil fuel-generated electricity.
Look at Estonia - not that long ago and fossil fuels dominated around 90% of electricity generation.
Today solar and wind eat more and more into the share of fossil fuel-generated electricity.
November 18, 2025 at 2:32 PM
Europe's electricity system is changing rapidly and often in places that don't make the headlines.
Look at Estonia - not that long ago and fossil fuels dominated around 90% of electricity generation.
Today solar and wind eat more and more into the share of fossil fuel-generated electricity.
Look at Estonia - not that long ago and fossil fuels dominated around 90% of electricity generation.
Today solar and wind eat more and more into the share of fossil fuel-generated electricity.
Earlier this year world’s largest battery-electric ship was successfully launched from the main production hall of Incat Tasmania into the River Derwent in Hobart, Australia.
The ferry carries 2,100 passengers and 225 vehicles.
The ferry carries 2,100 passengers and 225 vehicles.
November 14, 2025 at 3:31 PM
Earlier this year world’s largest battery-electric ship was successfully launched from the main production hall of Incat Tasmania into the River Derwent in Hobart, Australia.
The ferry carries 2,100 passengers and 225 vehicles.
The ferry carries 2,100 passengers and 225 vehicles.
In the global electrification race China is marching ahead.
The US and Europe risk falling behind clinging on to yesterday's technologies.
The US and Europe risk falling behind clinging on to yesterday's technologies.
November 14, 2025 at 1:51 PM
In the global electrification race China is marching ahead.
The US and Europe risk falling behind clinging on to yesterday's technologies.
The US and Europe risk falling behind clinging on to yesterday's technologies.
How to rapidly scale the heat pump market?
“The main hurdle is the price ratio of gas to electricity. [Reforming taxation of energy] would unlock a much more market-driven transition.”
That’s what I told the FT. Excellent piece.
“The main hurdle is the price ratio of gas to electricity. [Reforming taxation of energy] would unlock a much more market-driven transition.”
That’s what I told the FT. Excellent piece.
November 14, 2025 at 7:09 AM
How to rapidly scale the heat pump market?
“The main hurdle is the price ratio of gas to electricity. [Reforming taxation of energy] would unlock a much more market-driven transition.”
That’s what I told the FT. Excellent piece.
“The main hurdle is the price ratio of gas to electricity. [Reforming taxation of energy] would unlock a much more market-driven transition.”
That’s what I told the FT. Excellent piece.
Over 2/3 of primary energy is wasted as heat.
The transition isn’t about matching that waste — it’s about outperforming it with efficient clean energy technology.
The transition isn’t about matching that waste — it’s about outperforming it with efficient clean energy technology.
November 13, 2025 at 8:37 PM
Over 2/3 of primary energy is wasted as heat.
The transition isn’t about matching that waste — it’s about outperforming it with efficient clean energy technology.
The transition isn’t about matching that waste — it’s about outperforming it with efficient clean energy technology.
This should be fun: I accepted to serve as a Judge for the upcoming Global Energy Transition Awards hosted by Reuters Events alongside fellow judges Jigar Shah, Amy Jaffe, Brian Dean and Rita Dias.
November 13, 2025 at 3:16 PM
This should be fun: I accepted to serve as a Judge for the upcoming Global Energy Transition Awards hosted by Reuters Events alongside fellow judges Jigar Shah, Amy Jaffe, Brian Dean and Rita Dias.
A reminder: energy isn't just electricity.
Many countries have done well to decarbonise the tip of the energy iceberg - electricity.
The hard bit is what's below the tip of the iceberg - heat, cooling and transport.
Many countries have done well to decarbonise the tip of the energy iceberg - electricity.
The hard bit is what's below the tip of the iceberg - heat, cooling and transport.
November 13, 2025 at 2:13 PM
A reminder: energy isn't just electricity.
Many countries have done well to decarbonise the tip of the energy iceberg - electricity.
The hard bit is what's below the tip of the iceberg - heat, cooling and transport.
Many countries have done well to decarbonise the tip of the energy iceberg - electricity.
The hard bit is what's below the tip of the iceberg - heat, cooling and transport.
Churches across the UK — some centuries-old, uninsulated, many heritage buildings — are embracing electric heat-pump systems to replace oil and gas boilers. It’s a powerful symbol of how decarbonisation and stewardship go hand-in-hand.
www.thereengineer.pro/p/let-there-...
www.thereengineer.pro/p/let-there-...
November 13, 2025 at 12:33 PM
Churches across the UK — some centuries-old, uninsulated, many heritage buildings — are embracing electric heat-pump systems to replace oil and gas boilers. It’s a powerful symbol of how decarbonisation and stewardship go hand-in-hand.
www.thereengineer.pro/p/let-there-...
www.thereengineer.pro/p/let-there-...
Truly remarkable: Poland used to be a climate laggard.
Today, wind and solar are increasingly replacing coal in the Polish electricity mix with almost 30% of all electricity generated to date this year from wind and solar.
In 2000 coal provided 95% of Polish electricity.
Today it is at 51%.
Today, wind and solar are increasingly replacing coal in the Polish electricity mix with almost 30% of all electricity generated to date this year from wind and solar.
In 2000 coal provided 95% of Polish electricity.
Today it is at 51%.
November 13, 2025 at 8:47 AM
Truly remarkable: Poland used to be a climate laggard.
Today, wind and solar are increasingly replacing coal in the Polish electricity mix with almost 30% of all electricity generated to date this year from wind and solar.
In 2000 coal provided 95% of Polish electricity.
Today it is at 51%.
Today, wind and solar are increasingly replacing coal in the Polish electricity mix with almost 30% of all electricity generated to date this year from wind and solar.
In 2000 coal provided 95% of Polish electricity.
Today it is at 51%.