iiinova — where your digital self keeps evolving

Jan Rosenow @janrosenow.bsky.social · 23m

What is an electrostate? The word has found its way into the international energy vocabulary. The Financial Times, Forbes, Ember and Carnegie all use it. But it is rarely defined. I went through the reports and papers to unpack it & found four dimensions. 🧵 janrosenow.substack.com/p/what-is-an...

janrosenow.substack.com

What is an electrostate?

It is not a club you are in or out of. It is a direction of travel.

2237

Reposted by Jan Rosenow

Jan Rosenow @janrosenow.bsky.social · 01/10/2026

Blown away by the interest and positive feedback! The Cleaning Up episode on the Primary Energy Fallacy with me and Michael Liebreich is now in the top 10 of all 276 episodes of the show available on YouTube. www.youtube.com/watch?v=7xDH...

youtube.com

The Scandal at The Heart of The Energy Transition | Ep275: Jan Rosenow

YouTube video by Cleaning Up Podcast

18029

Jan Rosenow @janrosenow.bsky.social · 02/10/2026

Twice last week someone assumed I was a student. Their faces as they found out I'm a professor / keynote speaker - priceless. Better than any citation alert!

3450

Jan Rosenow @janrosenow.bsky.social · 02/10/2026

At least two dozen countries have launched programmes to swap oil and gas for electricity since the Iran war began. I spoke to ABC's PM about why, alongside António Guterres and Fatih Birol. Crises push countries towards energy they can make at home.

37324

Jan Rosenow @janrosenow.bsky.social · 01/10/2026

Since the Hormuz crisis, EU gas prices are up 132% and oil 52%. Electricity is up 44%, after falling through spring. Every boiler, car and furnace that switches to electricity is less exposed to the energy crisis. Electrification is increasingly energy security.

317554

Jan Rosenow @janrosenow.bsky.social · 01/10/2026

youtube.com

The Scandal at The Heart of The Energy Transition | Ep275: Jan Rosenow

YouTube video by Cleaning Up Podcast

18029

Reposted by Jan Rosenow

Samuel Fryxelius @fryxelius.bsky.social · 30/09/2026

I recommend this podcast episode. I am not an engineer but I am constantly looking for useful inputs to my understanding on power systems and the green transition. Give it listen, Thanks to @cleaninguppod.bsky.social and @janrosenow.bsky.social youtu.be/7xDH8ZqJvqo?...

youtu.be

The Scandal at The Heart of The Energy Transition | Ep275: Jan Rosenow

YouTube video by Cleaning Up Podcast

073

Jan Rosenow @janrosenow.bsky.social · 30/09/2026

Of course it makes me proud to see the University of Oxford once again topping the Times Higher Education World University Rankings and holding the longest run at number one of any university in the history of the rankings. Relieved it hasn't slipped since I arrived last year!

0380

Jan Rosenow @janrosenow.bsky.social · 29/09/2026

Wind and solar supplied 33% of EU electricity in the 12 months to August 2026, against 29% from fossil. In 2016 it was 13% and 43%.

13303123

Jan Rosenow @janrosenow.bsky.social · 27/09/2026

NEW BRIGHT SPOTS: "Just build more solar and batteries" I see this comment many times in my social media feed. The problem: The slogan undersells the problem. It also undersells the solution. The good news: we already have most of the tools we need. janrosenow.substack.com/p/the-proble...

janrosenow.substack.com

The problem with "just build solar and batteries"

Why the easiest story about the energy transition is misleading.

1716049

Jan Rosenow @janrosenow.bsky.social · 26/09/2026

Electricity is 23% of global final energy but delivers 37% of useful energy and powers 46% of the global economy. We don't need to replace every fossil joule. We need to replace the services. A much smaller task. Great to see the @iea.org’s new Electrification report finally measure this.

5378165

Jan Rosenow @janrosenow.bsky.social · 25/09/2026

Round two of the world's first industrial electrification auction opens in December. €1bn to electrify process heat, 3/4 of EU industrial emissions. Winners get a fixed premium per tonne of CO2 avoided for up to five years, funded by ETS revenues. climate.ec.europa.eu/news-other-r...

climate.ec.europa.eu

Commission publishes terms and conditions for €1 billion industrial heat decarbonisation auction

On 24 September 2026, the Commission published the final Terms and Conditions (T&Cs) for its second Europe-wide auction for projects decarbonising industrial process heat (IF26 Heat Auction).

14917

Reposted by Jan Rosenow

Dr Paul Dorfman @drpauldorfman.bsky.social · 24/09/2026

Around two-thirds of the energy we put into today’s energy system ends up as rejected heat. So are we measuring the energy transition all wrong? cleaninguppod.substack.com/p/ep-275-the...

cleaninguppod.substack.com

Ep 275: The Primary Energy Fallacy

Jan Rosenow joins Michael Liebreich on episode 275 of Cleaning Up

33410

Reposted by Jan Rosenow

Jan Rosenow @janrosenow.bsky.social · 24/09/2026

Hot climates, growing economies, expensive energy, fragile grids. Across six developing countries, recorded solar generation is up more than sixfold since 2019. Not because of policy. People are voting with their wallets. My piece for @yalee360.bsky.social: e360.yale.edu/features/dev...

e360.yale.edu

The Solar Boom in Developing Nations: Fast, Chaotic, and Unequal

Soaring energy costs are driving a solar rush in developing countries, but as households unplug from the grid, those who remain face higher electricity bills. If governments fail to manage the buildou...

410243

Reposted by Jan Rosenow

Jan Rosenow @janrosenow.bsky.social · 24/09/2026

The biggest scandal in the energy transition? Huge amounts of energy lost as rejected heat. Great talk with @mliebreich.bsky.social on Cleaning Up about why we may be measuring the transition all wrong. Plus hydrogen, heat pumps and systems thinking. youtu.be/7xDH8ZqJvqo?...

youtu.be

The Scandal at The Heart of The Energy Transition | Ep275: Jan Rosenow

YouTube video by Cleaning Up Podcast

1314150

Reposted by Jan Rosenow

Jaakko Haikonen @jaakkoha.bsky.social · 24/09/2026

”Primary energy fallacy: why focusing on the energy going into the system can obscure the useful energy we actually get out. So are we measuring the energy transition all wrong?” @cleaninguppod.bsky.social podcasts.apple.com/fi/podcast/c...

podcasts.apple.com

The Scandal at The Heart of The Energy Transition | Ep275: Jan Rosenow

Podcast-jakso · Cleaning Up: Leadership in an Age of Climate Change · 23. syyskuuta · 1 t 5 min

0123

Reposted by Jan Rosenow

David Livingston @1greenmantle.bsky.social · 24/09/2026

A great post thanks to Jan for posting and Jaap for sharing

0162

Jan Rosenow @janrosenow.bsky.social · 24/09/2026

Gasoline prices in the US are soaring. EV sales should be booming. They're not. Policy rollbacks have left the US trailing China and Europe just when drivers need an alternative most.

1517656

Jan Rosenow @janrosenow.bsky.social · 24/09/2026

e360.yale.edu

The Solar Boom in Developing Nations: Fast, Chaotic, and Unequal

410243

Reposted by Jan Rosenow

olivier_rbxl @olivier-rbxl.eurosky.social · 24/09/2026

If you listen to one discussion this week, make it be this one from @cleaninguppod.bsky.social with @janrosenow.bsky.social . You will gain insights into one of the biggest blindspots in the energy discussion : Wasted Heat The pod is worth it even if you’re already well versed in the matter 😉

054

Jan Rosenow @janrosenow.bsky.social · 24/09/2026

youtu.be

The Scandal at The Heart of The Energy Transition | Ep275: Jan Rosenow

YouTube video by Cleaning Up Podcast

1314150

Jan Rosenow @janrosenow.bsky.social · 23/09/2026

Aalborg now has 241,000 m³ of hot water storage, the largest in Denmark, plus 150 MW of electric boilers and a 177 MW seawater heat pump. That's 217 MW of flexible demand, holding one to three winter days of heat. District heating in Denmark is becoming a critical flexibility resource.

919358

Jan Rosenow @janrosenow.bsky.social · 23/09/2026

Electrification is an efficiency revolution and a fundamental reorganisation of energy systems. Less energy, fewer imports, more security. I'll make the case at @oxmartinschool.bsky.social on 19 Nov, in person & online: www.oxfordmartin.ox.ac.uk/events/elect...

oxfordmartin.ox.ac.uk

'The electrification imperative: the power of electroefficiency' with…

REGISTRATION To attend in-person at the Oxford Martin School, please scroll down to the registration form at the bottom of the page To attend online,…

311026

Reposted by Jan Rosenow

Jan Rosenow @janrosenow.bsky.social · 22/09/2026

🔥 HOT OFF THE PRESS For the first time ever, @iea.org has published a dedicated Electrification Report. An absolute treasure trove of data. Here are the key takeaways that stood out to me when I peer-reviewed it. 🧵

221395

Jan Rosenow @janrosenow.bsky.social · 22/09/2026

221395

Reposted by Jan Rosenow

Jan Rosenow @janrosenow.bsky.social · 20/09/2026

NEW BRIGHT SPOTS: Industrial heat without burning fossil fuels? Use cheap renewable electricity to heat cheap materials. Store the heat. Use when needed. It’s already happening: 50+ thermal battery projects have been built worldwide. More here: janrosenow.substack.com/p/thermal-ba...

janrosenow.substack.com

Thermal batteries aren’t coming. They’re already here.

Half of all operating thermal batteries came online since 2025. Policy, not technology, is now the main constraint.

5290123

Reposted by Jan Rosenow

Bo Vagner Hansen @bovagner.eurosky.social · 20/09/2026

"Realising the potential of ETES requires industrial heat to be treated as a flexible system asset rather than rigid demand, and market design, regulatory practice and industrial strategy have not yet made that shift. Policy should reward system integration and operational flexibility"

2134

Jan Rosenow @janrosenow.bsky.social · 20/09/2026

Deep in the middle of writing this. Any ideas for the book send them my way!

6317

Reposted by Jan Rosenow

Michael Allen @mjallen176.bsky.social · 20/09/2026

Learn something new every day. Thermal Batteries.

1276

Jan Rosenow @janrosenow.bsky.social · 20/09/2026

Can someone please explain the logic of the German government to me? 1) Try to prevent the phase out of the internal combustion engine and slow down EVs. 2) When petrol prices soar cut taxes. 3) Demand for petrol remains high and so do prices. 4) Repeat. www.politico.eu/article/germ...

politico.eu

Germany cuts fuel tax as Middle East conflicts send prices soaring

Germany issues its relief measures as its finance minister calls on Brussels to draft a windfall tax proposal on oil companies.

3425085

Reposted by Jan Rosenow

Fiona Harvey @fionaharvey.bsky.social · 19/09/2026

Net zero is a description of scientific fact: if we do not meet that target, we are doomed to repeat summers much worse than that just gone, with all of the accompanying damage to food supplies and infrastructure. So why are our politicians so weak on the climate? www.theguardian.com/environment/...

theguardian.com

Burning forests, emptying rivers, €180bn in damage: Europe’s politicians face reckoning after ‘summer of truth’

Amid record-shattering heatwaves and popular demand for climate action, why are politicians often timid or in denial?

1515063

Reposted by Jan Rosenow

Kees van der Leun @sustainable2050.bsky.social · 19/09/2026

German governments announce another €0.17/litre tax break for petrol and diesel. They claim it provides relief to citizens and companies, but it's a money transfer from those who use little or no fuel to those who use a lot, helping to keep demand and prices high. www.tagesschau.de/eilmeldung/e...

tagesschau.de

Bund und Länder einigen sich auf Tankrabatt und Spritpreisdeckel

Bund und Länder haben sich wegen der hohen Spritpreise auf einen Tankrabatt und einen Spritpreisdeckel geeinigt. Insgesamt sollen Bürger und Unternehmen um rund 2,5 Milliarden Euro entlastet werden.

311538

Reposted by Jan Rosenow

Ross Macfarlane @rossmacfarlane.bsky.social · 20/09/2026

Cool (well, very hot to be exact). Thermal batteries are starting to be deployed at scale, allowing industries to take power from grid when it is cheap or free, while maintaining continuous operations. @janrosenow.bsky.social

janrosenow.substack.com

Thermal batteries aren’t coming. They’re already here.

Half of all operating thermal batteries came online since 2025. Policy, not technology, is now the main constraint.

14717

Jan Rosenow @janrosenow.bsky.social · 20/09/2026

janrosenow.substack.com

Thermal batteries aren’t coming. They’re already here.

Half of all operating thermal batteries came online since 2025. Policy, not technology, is now the main constraint.

5290123

Jan Rosenow @janrosenow.bsky.social · 19/09/2026

Lots of discussion. To be clear: 1) I’m concerned about the impact data centres can have on the grid and the electricity they use must not be from fossil fuels. 2) But where they do get built let’s use the waste heat if we can.

58817

Jan Rosenow @janrosenow.bsky.social · 19/09/2026

This image went viral a few months ago. Data centres are energy hungry and can cause substantial grid constraints and in worst case new fossil generation. But there is a silver lining: we can use some of the waste heat for district heating. More here: janrosenow.substack.com/p/district-h...

90983376

Reposted by Jan Rosenow

Jan Rosenow @janrosenow.bsky.social · 18/09/2026

Thermal batteries aren't a future technology any more. 80 projects worldwide, 51 operating. Half of those came online in 2025 or 2026. Mostly 1–100 MWh, but Antora (5 GWh) & Chinese molten salt plants (up to 2 GWh) show what's possible. More soon on Substack. Sign up here janrosenow.substack.com

615153

Reposted by Jan Rosenow

Jaap Burger @jaapburger.eu · 18/09/2026

97% !! of German EV drivers are (highly) satisfied with their electric car. That is a full 9 percentage points higher than the level of dissatisfaction with the Bundeskanzler, which already seemed to be a historically high poll figure.

adac.de

ADAC Umfrage: In einem Punkt sind E-Auto-Fahrende erstaunlich einig!

Passt die Ladeinfrastruktur? Wie steht es um die Reichweite? Der ADAC hat Elektroautofahrer befragt, wie zufrieden sie sind.

37018

Jan Rosenow @janrosenow.bsky.social · 18/09/2026

615153

Reposted by Jan Rosenow

Jaap Burger @jaapburger.eu · 16/09/2026

Interesting - a bit like going back go the early industrialisation, still closely linked to agriculture and thus seasons? Maybe not as strange as it sounds.

0186

Reposted by Jan Rosenow

Jan Rosenow @janrosenow.bsky.social · 16/09/2026

NEW PAPER: This sounds mad at first. Keep aluminium smelters you don't need, then switch them off every winter to balance the energy system. But might there be something to it? Joule asked me to take a look at it. authors.elsevier.com/a/1nnnf925JE...

107424

Jan Rosenow @janrosenow.bsky.social · 16/09/2026

107424

Jan Rosenow @janrosenow.bsky.social · 15/09/2026

European gas is above €82/MWh - the highest since late 2022. Hormuz remains largely shut and gas storage is at 68% going into winter. None of this started in Europe but we pay for it. The only exit is using less gas. Heat pumps, electrified industry, insulation.

14574207

Reposted by Jan Rosenow

Juraj Mikurcik @jurajmikurcik.bsky.social · 14/09/2026

Really good pulse check on where things are/ are heading to with active cooling in EU. With the warming climate the cooling demand will inevitably rise, the question is by how much.

1164

Reposted by Jan Rosenow

Jan Rosenow @janrosenow.bsky.social · 13/09/2026

NEW BRIGHT SPOTS: EU homes used twice as much electricity for cooling in 2024 as in 2018. And barely anyone has air conditioning yet. 6% in Germany, 90%+ in the US. If Europe catches up, cooling could be a quarter of the 2050 system peak. janrosenow.substack.com/p/what-happe...

janrosenow.substack.com

What happens when 90% of Europe has air con?

How better buildings can keep Europe cool while reducing energy costs and grid pressure

79928

Reposted by Jan Rosenow

Jeff Goodell @jeffgoodell.bsky.social · 13/09/2026

In a hot world, you have to stay cool. AC is one way, but it's not the only way. And it brings lots of other risks and complexities with it.

4274

Jan Rosenow @janrosenow.bsky.social · 13/09/2026

janrosenow.substack.com

What happens when 90% of Europe has air con?

How better buildings can keep Europe cool while reducing energy costs and grid pressure

79928