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Hannah Daly

@hannahdaly.ie

Professor in Sustainable Energy, UCC ๐Ÿ‡ฎ๐Ÿ‡ช I write a monthly column for the Irish Times: https://www.irishtimes.com/tags/hannah-daly/ Born 351ppm, daughters born 408 & 410, now >420ppm ๐Ÿšจ โ€ผ๏ธ Former @IEA and @UCL

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Latest posts by Hannah Daly @hannahdaly.ie

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Trebling does seem extreme. Iโ€™ve not seen that explained but I guess that kerosene is scarcer than other oil products. The rise in Ireland has not been as great - an 80% growth (ish)

10.03.2026 21:34 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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I deeply hope that home retrofit companies and heat pump installers are getting a lot of calls this week.

10.03.2026 21:30 ๐Ÿ‘ 47 ๐Ÿ” 5 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1
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US solar installation: Down 14% between 2024 and 2025.
Chinese solar installation: Up 14% between 2024 and 2025.

Last year China installed more than 7 times more solar capacity than the US. So much for energy dominance...

10.03.2026 20:45 ๐Ÿ‘ 178 ๐Ÿ” 67 ๐Ÿ’ฌ 4 ๐Ÿ“Œ 7

Are you a young academic working on climate and feel ready for a move? We are recruiting two Assistant/Associate Professors @granthamicl.bsky.social at Imperial College London @imperialcollegeldn.bsky.social (1/6)

10.03.2026 00:37 ๐Ÿ‘ 82 ๐Ÿ” 70 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 3

It's (at least partially) because the taxes on heating oil are far lower than for road fuels, so the signal from fluctuating wholesale price is stronger.

10.03.2026 08:33 ๐Ÿ‘ 19 ๐Ÿ” 0 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0
Crude oil prices, showing a very sharp increase in the last day, from around 65 to 101 dollars per barrel..

Crude oil prices, showing a very sharp increase in the last day, from around 65 to 101 dollars per barrel..

Oil prices wouldn't be all over the news today if more of our economy was powered by local, secure renewable energy.

This isn't an "energy crisis". It's a fossil fuel crisis.

44% of UK electricity came from renewables in 2025. More of that plus an electrified economy => no more oil shocks.

09.03.2026 10:15 ๐Ÿ‘ 2985 ๐Ÿ” 873 ๐Ÿ’ฌ 84 ๐Ÿ“Œ 53

To get back to my original point, cutting off supply doesnโ€™t get you a just transition if people donโ€™t have alternatives to peat. You also donโ€™t get the social licence to cut off supply unless you give people the heat pump. I donโ€™t think this is โ€œeither/orโ€.

08.03.2026 21:49 ๐Ÿ‘ 5 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Peat woodland is the most astonishingly beautiful landscape too (though maybe this is not the same thing).

08.03.2026 21:34 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

If youโ€™re playing that game, then heat pump subsidies should first be piled on homes burning peat and coal, then oil. Peat emits twice the carbon as gas for the same heat, not even counting the carbon lost from the land, or the harm to health.

08.03.2026 21:31 ๐Ÿ‘ 8 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

This segment certainly fired my brain! Rather than the short term carbon value I would consider which landscape is most resilient to a changed climate.
One for @roisinmoriarty.comโ€™s new EPA project.

08.03.2026 21:16 ๐Ÿ‘ 4 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

What do you call someone who thinks the State should buy Barney a heat pump AND eradicate illegal peat mining? Barney might even live to enjoy the bog a bit longer.

08.03.2026 21:11 ๐Ÿ‘ 6 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Fine, Iโ€™ll take the bait.

On what planet is being left with turf for heating a โ€œjust transitionโ€? Consider this purist annoyed!

(Lovely episode)

08.03.2026 18:35 ๐Ÿ‘ 13 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

They're stealing the voice of Sinead O'Connor, who risked her own career in 1992 by speaking up about child sexual abuse in the Catholic church, so let's make this theft an occasion to keep talking about Trump in the Epstein files.

07.03.2026 17:00 ๐Ÿ‘ 671 ๐Ÿ” 209 ๐Ÿ’ฌ 30 ๐Ÿ“Œ 10

๐Ÿซฃ

06.03.2026 20:57 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Happy #InternationalWomensDay2026๐Ÿ’•
A few facts regarding women that might surprise you:
๐Ÿšฉ Women&girls are worst impacted by climate crisis
๐Ÿšฉ Most of the worldโ€™s refugees are women&girls
๐Ÿšฉ No country in the world pays women equally as well as men - Iceland is best at 90%

06.03.2026 11:13 ๐Ÿ‘ 13 ๐Ÿ” 7 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

If you are interested to understand the ins and out of the Climate Change Advisory Council's equity assessment of Ireland's carbon budgets @swimsure.bsky.social and @ejni.bsky.social released a working paper last week that applies a consistent 'Paris Test' across the carbon budgets.

03.03.2026 08:53 ๐Ÿ‘ 8 ๐Ÿ” 4 ๐Ÿ’ฌ 2 ๐Ÿ“Œ 0

The inevitable outcome of the strategic communications plan of immediately forgetting why we're doing any of this and pretending to be energy affordability campaigners instead.

Climate will be back, but for now: support the real ones who haven't given up focus and fight. There are many of them โœŠ๐Ÿฝ

05.03.2026 10:51 ๐Ÿ‘ 60 ๐Ÿ” 17 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Muskโ€™s fossil data centres are undoing Teslaโ€™s climate benefit I know you already know the data centres built to power the generative AI software running on X are intensely harmful and wildly polluting, often in breach of rules and regulations.ย You may not knoโ€ฆ

It's a simple way of putting it, but I hope the fact that one group of data centres powering one shitty, evil chatbot for one crappy little social media site undoing most or all of Tesla's entire global climate benefits puts in perspective how WILDLY bloated genAI is as software

02.03.2026 19:56 ๐Ÿ‘ 117 ๐Ÿ” 49 ๐Ÿ’ฌ 4 ๐Ÿ“Œ 3
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How climate slid down this Governmentโ€™s agenda Inside Politics podcast with Hugh Linehan

Brilliant @irishtimes.com podcast with @codohertynews.bsky.social on this gvtโ€™s climate backsliding. I particularly appreciate her pushing back on the narratives that the carbon budgets were unachievable and unrealistic, and that there has been too much โ€œlecturingโ€
www.irishtimes.com/podcasts/ins...

28.02.2026 15:18 ๐Ÿ‘ 38 ๐Ÿ” 9 ๐Ÿ’ฌ 4 ๐Ÿ“Œ 0
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Just when you think you've seen the most brain-dead hysterical media reporting on nonsensical anti-renewables "fears" whipped up on deranged Facebook groups, along comes the epic nonsense below:

24.02.2026 11:29 ๐Ÿ‘ 482 ๐Ÿ” 144 ๐Ÿ’ฌ 28 ๐Ÿ“Œ 47
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Claims that AI can help fix climate dismissed as greenwashing Industry using โ€˜diversionaryโ€™ tactics, says analyst, as energy-hungry complex functions such as video generation and deep research proliferate

www.theguardian.com/technology/2...

18.02.2026 21:38 ๐Ÿ‘ 5 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Matt, when are you bringing the show to Ireland?!

18.02.2026 21:36 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Ireland No. 1 in Europe - yet again. GHGs rose faster (+3.2%) in Ireland in Q3 2025 than ANYWHERE else in Europe.

#Climate action, my eye.

18.02.2026 09:02 ๐Ÿ‘ 131 ๐Ÿ” 81 ๐Ÿ’ฌ 12 ๐Ÿ“Œ 18
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Experts express โ€˜extreme concernโ€™ over delay to climate action plan Minister says plan is coming, but academics say there is no justification for holdup

Plan delay: โ€œWe wish to state plainly and unequivocally that, in our informed view, there is no basis in science and no discernible basis in law for [his] assertion.โ€

Prof Hannah Daly; Prof John Sweeney; Prof Barry McMullin; Dr Andrew Jackson; Dr Paul R Rice. www.irishtimes.com/environment/...

17.02.2026 14:07 ๐Ÿ‘ 29 ๐Ÿ” 11 ๐Ÿ’ฌ 3 ๐Ÿ“Œ 1
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Claims that AI can help fix climate dismissed as greenwashing Industry using โ€˜diversionaryโ€™ tactics, says analyst, as energy-hungry complex functions such as video generation and deep research proliferate

Claims that #AI can help fix climate dismissed as greenwashing

- Most claims refer to machine learning and not the energy-hungry chatbots and image generation tools

#climatecrisis
www.theguardian.com/technology/2...

17.02.2026 12:07 ๐Ÿ‘ 58 ๐Ÿ” 33 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
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How much land & power are required to decarbonise Dublin Airport? Decarbonising the emissions associated with flights from Dublin Airport would need much more land and electricity than you might think

Great, plain English, Brainstorm piece by @ucc.ie researchers on what it would take to decarbonised #DublinAirport -- more than you would think @rte.ie

16.02.2026 09:37 ๐Ÿ‘ 20 ๐Ÿ” 9 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

In this case we assume the CO2 for e-SAF uses DAC, so you have to add energy demand for electrolysis and fuel synthesis on top of it.

No paper, unfortunately but it would be a nice one to publish.

16.02.2026 10:44 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

From these figures it's clear to me that DAC is the only solution that could meaningfully scaled. It also offers the advantage of being able to be located anywhere. But 80 of the currently largest DAC plants would be necessary to capture Dublin Airport's emissions, and it wouldn't be cheap.

16.02.2026 10:09 ๐Ÿ‘ 8 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

"From: "jeffrey E." <jeevacation@gmail.com>
To: Joscha Bach
Date: Sun, 10 Jul 2016
re taboo , maybe climate change is a good way of dealing with overpopulation. the earths forest fire. potentailly a
good thing for the species".. 1/2

16.02.2026 08:16 ๐Ÿ‘ 268 ๐Ÿ” 139 ๐Ÿ’ฌ 19 ๐Ÿ“Œ 58

In any case, increasing demand for flights in the short term, without reflecting the cost of decarbonisation in the ticket price, makes scaling all of these solutions far more challenging.

16.02.2026 09:48 ๐Ÿ‘ 21 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0