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kornelis.bsky.social
Speeding up the energy transition Professor Energy Systems @TU-Delft Lead author @IPCC @UNEP Gap Report Chairman Technical Council @SBTi Scientific Climate Council @NL Energy coach @Houten #energysky #climatesky www.kornelis.blog
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Very good overview of the role of aerosols in (masking) global warming: www.carbonbrief.org/explainer-ho...

NEW from me: China's CO2 emissions fell ~1.6% in the first quarter and have now been flat or down for more than a year. This is the first time on record that emissions are falling due to clean energy growth, not slow power demand.

So far, 2025 is a very warm year, despite the dissipation of El Nino. Data for March: berkeleyearth.org/march-2025-t...

Just your regular reminder of where global CO2 emissions are tracking compared to scenarios that keep warming to below 1.5C in 2100, with "no or low overshoot" (maximum temperature around 1.6C). journals.sagepub.com/doi/full/10.... C1/

How vulnerable are you to flooding and what can you do about it? Scientists develop "water label" for Dutch homes: www.tudelft.nl/en/2025/tbm/...

Harvard’s Decision to Resist Trump Is ‘of Momentous Significance’ (gift article) www.nytimes.com/2025/04/14/u...

“It took more than 20 years for the U.S. to install the first 100 GW of clean power, five years to install the next 100 GW, and three years to install the most recent 100 GW" cleanpower.org/news/market-... #Upshift 🔌💡

Polish Prime Minister Donald Tusk responds, something we hopefully see a lot more of that from other European leaders. It's never been clearer than in this moment that Trump is Putin's ally, not Europe's.

Already posted Kees before, but it's one account I've grown to like - needs a much bigger following here. Truly one of the best accounts on #EnergySky @sustainable2050.bsky.social

TU Delft research suggests back contact tech may push crystalline silicon PV over 28% threshold www.pv-magazine.com/2025/02/24/t...

‼️The US-based @ipcc.bsky.social technical support unit (TSU) for Working Group 3 Co-Chairs has been terminated, and the US won’t be attending next week’s IPCC meeting where the AR7 chapter outlines will be approved. More by @afreedma.bsky.social here:

Evaluation of our series of online courses "Designing a Climate-Neutral World": learners are very positive (scale from 0 tot 10) 👇

Some truly excellent talks on energy transition, critical raw materials, climate change & water resources - and a much needed positive message on #CO2 emissions from @kornelis.bsky.social at the half-Lustrum event that our #geoscience & #mining student association at TU Delft hosted today.

the way to shield households from volatile gas prices is to shift to renewables & heat pumps

EU greenhouse gas emissions fell by 0.6% in Q3 2024 📉, while the economy grew 1.3% 📈 ✅ 16 EU countries cut emissions - Austria 🇦🇹 (-7.8%) led the way! ✅ Biggest sectoral reductions: Electricity & gas (-6.7%) A cleaner, stronger economy is possible! 🌍 🔽 europa.eu/!RwW8QF

If Christ would walk in today ... Strong message!

You know what? Let's not fill our European gas storages, now our LNG supplier the US has elected someone who would love to imitate Putin by using his country's leverage as a supplier in times of scarcity. Makes life a little cheaper now, and we'll see what happens next winter.

The UK has set out an ambitious national climate plan for 2035. Will any countries follow?

Go! go! go!

Is 2 °C dead? In my opinion, it's too early to say, given all the uncertainties. Read the excellent Guardian article here, including links to underlying material 👇

1/ Green energy for mobile machines in the future? Yes! Find out more in our new research publication doi.org/10.1002/aesr.... Joint research of @VTTFinland @UniLUT #TampereUNI. Green electricity, hydrogen, and e-fuels – globally.

🚫 Despite all the negativity in the media about electric vehicles not selling: ⬆️ ⬆️ ⬆️ 24% more EVs were sold in 2024 than in 2023. Graphic from @nathanielbullard.com

A lot of interesting stuff - this one 👇 struck me most: China moves from very low levels to about 50% sales share of electric vehicles within 5 years (including PHEV). Are they ready for 100% by 2030? Could the rest of the world repeat that?

This 👇

Not a fan of ChatCPT etc for other reasons, but this is a good observation about perspective. (It reminds me of the panic over emissions from computer gaming. Which yes, are high, but staying in and gaming is almost certainly much lower CO2 than driving anywhere...)

"'If there really were an energy emergency, then the right thing to do would be to increase supplies of all forms of energy, & to try to use energy conservation initiatives'... executive orders are aimed at loosening those requirements so appliances would use ⬆️ energy & cars would burn ⬆️ gasoline."

New US administration wages culture war on renewable energy: www.nytimes.com/2025/01/21/c...

An answer from 🇪🇺 to Trump's executive order to quit the Paris agreement

Just out: Solar power additions in China in 2024 exceeded expectations, again, with a whopping 277 GW installed in just one year! This was up 28% on the already towering 217 GW added in 2023. Wind power made a new record as well, with 79 GW added to the grid, up 5% on year.

Today, climate action is needed more than ever. Get started by following our series of open online courses: "Designing a Climate-Neutral World" The courses just started again and are free of charge! online-learning.tudelft.nl/programs/cli... @tudelft.bsky.social

C'mon scientists, please live up to our expectations and come to the fore! (And big 🙏 to those who do!)

Clear message: "we ... found that in most countries, most people trust scientists and agree that scientists should engage more in society and policymaking." Important new article in Nature Human Behaviour: www.nature.com/articles/s41... #climatesky #climatepolicy

Great overview of the variety of 'current policy' scenarios 👇 www.theclimatebrink.com/p/moving-awa...

I was a grad student when the 2007 IPCC report came out, the two highest emissions pathways predicted warming of 3.4 or 4 degrees. "A bit less than 3C" is still too high, but thanks to activists, scientists, and policymakers we have brought the number down. Our climate future is still being written.

Important correction 👇

Long lines for a good man. #jimmycarter

I am a climate scientist and this is correct ⬇️

This year will be a challenging and critical year for fighting climate change. But there is no reason to lose hope. My new blog: kornelisblok.home.blog?p=496&previe.... Wishing you all the best and that you all may contribute! #climatepolicy #climate

Let us follow the Swiss example: Heat pump market share from 10 to 80% in just 7 years ...

"The global fight against the climate crisis will soldier on without the leadership of the United States"

"Optimism is the belief that the world is getting better. Hope is the belief that we – together – can make the world better. When it comes to climate change, there is indeed no reason for optimism, but we should remain hopeful."