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Jan Rosenow

@janrosenow.bsky.social

2245 followers 255 following 470 posts

Energy transition optimist Director at the Regulatory Assistance Project Research at Oxford University, SPRU & FU Berlin Co-host Watt Matters podcast eceee board member Coalition for Energy Savings steering committee member

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Remember when the former US president famously wore a hard hat speaking in front of a backdrop of uniformed coalminers holding signs that read “Trump digs coal”? Between 2016 and 2020 when he was in office coal electricity generation fell by 38%.

0 replies 2 reposts 2 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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These 10 countries are phasing out coal the fastest in the world.

www.wri.org/insights/cou...

1 replies 6 reposts 12 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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How the Nordics became world leaders in heat pumps and saw carbon emissions from heating drop dramatically.

My article for @CarbonBrief has the details 👇

www.carbonbrief.org/guest-post-h...

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Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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This is such a fun article!

How a new generation of engineers push heat pumps to the efficiency limit.

www.wired.com/story/heat-p...

2 replies 27 reposts 55 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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What explains that some countries see a lot of heat pumps being installed whereas others lag behind? Key factor is the 'spark gap' - the ration of electricity to gas prices. I plotted heat pump sales per 1,000 households in 2023 against the spark gap. See the correlation?

1 replies 10 reposts 22 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Unthinkable just a few years ago: Almost 20% of all cars sold in 2024 are predicted to be electric vehicles. BNEF expects global EV sales to reach 16.6 million in 2024.

1 replies 25 reposts 74 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Which countries have the highest share of wind and solar? I turned Ember's data into this graph for you to find out.

2 replies 10 reposts 21 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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correct

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Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Which countries have the highest share of wind and solar? I turned Ember's data into this graph for you to find out.

2 replies 10 reposts 21 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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This is the world’s largest wind turbine: Goldwind’s GWH252-16MW intelligent wind turbine has a rotor diameter of 252m. It also has a swept area of around 50,000 sq – equivalent of seven standard football pitches. The turbine’s hub is 146m high – that’s as tall as a 50-story building.

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Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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This is the world's largest battery combined with solar: The Edwards & Sanborn facility boasts 🔋 3,287 MWh of battery storage 🌞 875 MW of solar power capacity It is located in California’s Mojave Desert & was developed by Terra Gen & built by Mortenson.

1 replies 6 reposts 23 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Whisky from heat pumps?

Oh yes! A century-old Scottish distillery has halved its CO2 emissions using a heat pump.

www.canarymedia.com/articles/cle...

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Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Will we meet net zero?
How does the UK do compared to other countries?
What does a sustainable home look like?
Can car batteries power our homes?

I discussed these & other questions with Nick Atkin Chief Exec of Yorkshire Housing 👇

Apple: ow.ly/VnUH50SoVtT
Spotify: ow.ly/zeGU50SoVtR

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Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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NEW RESEARCH: What do we do with the gas grid when gas demand drops?

Who will pay for the gas grid if more and more people disconnect?

A new regulatory approach is urgently needed to ensure costs for gas grid do not spiral out of control.

Free copy here 👇
authors.elsevier.com/a/1jJcf9C%7E...

4 replies 16 reposts 27 likes

Reposted by Jan Rosenow

Hisham Zerriffi's avatar Hisham Zerriffi @hishamzerriffi.bsky.social
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There's a lot of infrastructure tied up in the fossil energy system and lots of interesting and tricky issues of what happens during the transition. Like, what happens to the gas grid as gas demand drops. 👇🏼

1 replies 6 reposts 10 likes

Reposted by Jan Rosenow

Regulatory Assistance Project's avatar Regulatory Assistance Project @regassistproj.bsky.social
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Gas usage will likely plummet as we move towards net zero. By 2050, European models predict a 70% drop in gaseous fuels. Major regulatory reforms are essential to manage this shift and its impact on the gas grid. Learn more in this article in Cell Press's One Earth journal.

0 replies 2 reposts 5 likes

Reposted by Jan Rosenow

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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NEW RESEARCH: What do we do with the gas grid when gas demand drops?

Who will pay for the gas grid if more and more people disconnect?

A new regulatory approach is urgently needed to ensure costs for gas grid do not spiral out of control.

Free copy here 👇
authors.elsevier.com/a/1jJcf9C%7E...

4 replies 16 reposts 27 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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“The UK is blessed with a huge resource for renewable electricity.

Electrification is the most efficient way of using renewable electricity in sectors that now rely on oil and gas.”

This is what I told the Guardian.

www.theguardian.com/politics/art...

0 replies 4 reposts 16 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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There is an abundance of free ambient heat all around us - in the air, the ground, the rivers and the sea. Heat pumps can harvest, upgrade and transport this heat to places where we need it instead of burning fossil fuels.

1 replies 9 reposts 47 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Bold take from The Economist in last issue: “Solar cells will in all likelihood be the single biggest source of electrical power on the planet by the mid 2030s.”

6 replies 20 reposts 62 likes

Reposted by Jan Rosenow

Regulatory Assistance Project's avatar Regulatory Assistance Project @regassistproj.bsky.social
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👏Congratulations to our own @janrosenow.bsky.social for this well-earned recognition! 👏

Jan is an important and crucial voice in the global energy transition. Follow him for more insights!

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Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Ireland’s oldest surviving purpose-built residential building has a heat pump providing all of its heating.

Built in 1702 the Rubrics Building is the oldest building within Trinity College Dublin. It's a Protected Structure and Recorded Monument.
www.irishbuildinganddesignawards.com/building-pro...

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Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Heat pumps do work in high rise buildings.

A 17-story Art Deco office building in NYC, built in 1931, is ditching its fossil-gas boiler for electric heat pumps providing both heating and cooling.

www.canarymedia.com/articles/hea...

1 replies 9 reposts 50 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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"Wind and solar are the best concept to get more blackout" I was told on LinkedIn.

But data indicates the opposite i.e. that grids with a higher penetration of wind and solar tend to be more reliable.

Here's grid reliability vs. wind & solar penetration in Europe.

www.linkedin.com/pulse/grid-r...

2 replies 4 reposts 19 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Boom! 447 GW of new solar capacity installed in 2023. That's 87% more than in 2022. Source is SolarPower Europe

0 replies 23 reposts 67 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Coal is gone in UK electricity generation. Fossil gas is next. For the first time wind and solar generated more electricity than gas (first 5 months of 2024).

2 replies 38 reposts 138 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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I'm sure it will happen somewhere soon.

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Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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This is the largest heat pump in the world (60MW). It is located in Esbjerg, DK and provides heating for 100,000 people. The heat pump replaced coal-fired thermal generation using Denmark's electricity which is 2/3 from wind and solar.

0 replies 12 reposts 41 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Anti-electricity cartoon from 1889. No matter how good an idea comes along, there will always be somebody opposed. Today it is renewable energy, electric vehicles and heat pumps. Good news is that innovation often proves the tech doubters wrong.

0 replies 8 reposts 15 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Installing a heat pump is the singest largest step households can take to reduce carbon emissions from their homes. More insulation means lower bills + increased comfort but isn’t required to make heat pumps run efficiently & effectively. That’s why the mantra of fabric first is out of date.

4 replies 25 reposts 57 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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There are claims that solar uptake will lead to "waste mountains".

Research in Nature Physics says:

"35 years of cumulative PV module waste (2016–2050) is dwarfed by waste generated by fossil fuel energy & other common waste streams"

www.nature.com/articles/s41...

0 replies 24 reposts 46 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Unthinkable just a few years ago: For the first time renewables (wind, solar, hydro) produced more EU electricity than fossil fuels in 2023. 2/3 of EU electricity is from non-fossil fuel generation. Source Ember

4 replies 201 reposts 524 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Remember Nokia? 3 months after Forbes ran this article Steve Jobs introduced the first iPhone. Disruptive technologies can change a market rapidly and irreversibly. We see the same happening in energy right now. And lots of Nokias too who spread FUD about clean tech.

2 replies 11 reposts 23 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Unthinkable just a few years ago: For the first time renewables (wind, solar, hydro) produced more EU electricity than fossil fuels in 2023. 2/3 of EU electricity is from non-fossil fuel generation. Source Ember

4 replies 201 reposts 524 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Electric vehicles & heat pumps are all the rage.

But let's not forget electrification of industry - 90% of all process heat could be electrified"

✅driving down emissions
✅increasing efficiency
✅modernising European industry
✅avoiding volatile fossil fuel prices

www.euractiv.com/section/ener...

0 replies 4 reposts 17 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Attempts by demagogues to blame clean energy tech for recent high energy prices are not based on evidence. A reminder: it was fossil gas prices that sent energy markets into tailspin in Europe. Prices are on rise again - a reminder that relying on imported fossil fuels is risky.

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Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Hydrogen realism starts to replace hydrogen hype: A sober atmosphere at the Financial Times Hydrogen Summit today.

We see higher not lower costs of hydrogen and slower not faster take up of production and demand than expected.

www.ft.com/content/14a6...

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Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Solar and wind outpace nuclear, gas, coal and hydro power when it comes to how fast these technologies ramped up. Note this is NOT capacity but generation in TWh vs years since generating 100 TWh. Great visual by RMI.

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Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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HOT OFF THE PRESS: Inspiring RMI deck on how energy system is disrupted by exponential forces of renewables, electrification & efficiency.

Remarkable progress & growth in cleantech in past decade:
1️⃣costs down by up to 80%
2️⃣investment up nearly 10x
3️⃣ solar generation up 12x
rmi.org/insight/the-...

0 replies 4 reposts 16 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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Poland has long been seen as a climate laggard. But that's changing: ⛏️ Share of coal generation in Poland fell from 95% in 2000 to 61% in 2023. 🌞🌬️Wind and solar increased from 0% to 21% over same period.

1 replies 5 reposts 32 likes

Jan Rosenow's avatar Jan Rosenow @janrosenow.bsky.social
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In Southern California, a new rule is expected to drive industrial electrification:

Legislators will set NOx emission standards that will gradually push factories away from burning fossil gas and adopt electric technologies instead.

www.canarymedia.com/articles/cle...

0 replies 8 reposts 16 likes