Hannah Daly
@hannahdaly.ie
Professor in Sustainable Energy, UCC 🇮🇪
I write a monthly column for the Irish Times: https://www.irishtimes.com/tags/hannah-daly/
Born 351ppm, daughters born 408 & 410, now >420ppm 🚨 ‼️
Former @IEA and @UCL
I write a monthly column for the Irish Times: https://www.irishtimes.com/tags/hannah-daly/
Born 351ppm, daughters born 408 & 410, now >420ppm 🚨 ‼️
Former @IEA and @UCL
Join us, the Energy Policy and Modelling Group
@ucc.ie, and guests including former climate ministers Eamon Ryan and Denis Naughten, in a morning dedicated to discussing climate action and energy security:
📆 December 15th
📍 Engineers Ireland, Dublin
🔗 Register: www.eventbrite.com/e/ucc-energy...
@ucc.ie, and guests including former climate ministers Eamon Ryan and Denis Naughten, in a morning dedicated to discussing climate action and energy security:
📆 December 15th
📍 Engineers Ireland, Dublin
🔗 Register: www.eventbrite.com/e/ucc-energy...
November 25, 2025 at 2:40 PM
Join us, the Energy Policy and Modelling Group
@ucc.ie, and guests including former climate ministers Eamon Ryan and Denis Naughten, in a morning dedicated to discussing climate action and energy security:
📆 December 15th
📍 Engineers Ireland, Dublin
🔗 Register: www.eventbrite.com/e/ucc-energy...
@ucc.ie, and guests including former climate ministers Eamon Ryan and Denis Naughten, in a morning dedicated to discussing climate action and energy security:
📆 December 15th
📍 Engineers Ireland, Dublin
🔗 Register: www.eventbrite.com/e/ucc-energy...
(For non-locals - to be "sound" is one of the most important qualities to aspire to in Ireland.
For locals, the Soundabout is where the slip road from the South Ring to Togher meets the flyover coming from Forge Hill, and onto Pouladuff)
For locals, the Soundabout is where the slip road from the South Ring to Togher meets the flyover coming from Forge Hill, and onto Pouladuff)
November 14, 2025 at 8:07 AM
(For non-locals - to be "sound" is one of the most important qualities to aspire to in Ireland.
For locals, the Soundabout is where the slip road from the South Ring to Togher meets the flyover coming from Forge Hill, and onto Pouladuff)
For locals, the Soundabout is where the slip road from the South Ring to Togher meets the flyover coming from Forge Hill, and onto Pouladuff)
I also urge you to think about that second chart - to give an accurate picture, the charts on the bottom left should show methane's warming impact as far, far higher.
November 4, 2025 at 11:55 AM
I also urge you to think about that second chart - to give an accurate picture, the charts on the bottom left should show methane's warming impact as far, far higher.
Our letter in response to John FitzGerald's article last week, which made several incorrect claims about our research, including that it calls for Ireland to "end all livestock production".
www.irishtimes.com/opinion/lett...
www.irishtimes.com/opinion/lett...
October 28, 2025 at 6:10 PM
Our letter in response to John FitzGerald's article last week, which made several incorrect claims about our research, including that it calls for Ireland to "end all livestock production".
www.irishtimes.com/opinion/lett...
www.irishtimes.com/opinion/lett...
"If you look at the level of investment that we've lost over the past 12 months - billions of dollars of AI has gone into the UK, the Nordics, central Europe, the Mediteranian."
Ireland's electricity is significantly more carbon intensive than these locations, apart from parts of Central Europe.
Ireland's electricity is significantly more carbon intensive than these locations, apart from parts of Central Europe.
October 14, 2025 at 3:03 PM
"If you look at the level of investment that we've lost over the past 12 months - billions of dollars of AI has gone into the UK, the Nordics, central Europe, the Mediteranian."
Ireland's electricity is significantly more carbon intensive than these locations, apart from parts of Central Europe.
Ireland's electricity is significantly more carbon intensive than these locations, apart from parts of Central Europe.
Good news. After the organisers of the Overshoot Conference revisited the data, they've found that in an optimistic scenario, global temperatures could return below 1.5 °C within the lifetimes of many reading this post.
October 10, 2025 at 8:14 AM
Good news. After the organisers of the Overshoot Conference revisited the data, they've found that in an optimistic scenario, global temperatures could return below 1.5 °C within the lifetimes of many reading this post.
Secondly, this seems like a good time to announce that UCC is launching a new interdisciplinary BSc in Sustainability, and I have the enormous honour to take the role of Programme Director. I've been working with amazing people from across the university to get this off the ground. Stay tuned!
October 7, 2025 at 5:39 PM
Secondly, this seems like a good time to announce that UCC is launching a new interdisciplinary BSc in Sustainability, and I have the enormous honour to take the role of Programme Director. I've been working with amazing people from across the university to get this off the ground. Stay tuned!
We have practically breached the 1.5C temperature goal of the Paris Agreement, but that does not mean giving up - returning temperatures below 1.5C must still remain the North Star. I'm very much looking forward to meeting with and learning from experts who share that vision.
September 29, 2025 at 10:54 AM
We have practically breached the 1.5C temperature goal of the Paris Agreement, but that does not mean giving up - returning temperatures below 1.5C must still remain the North Star. I'm very much looking forward to meeting with and learning from experts who share that vision.
I'm on my way to Vienna to participate in the first Overshoot Conference, at IIASA.
I'll present in the theme of "Highest possible mitigation ambition under overshoot":
"Towards a framework for aligning national mitigation scenarios with 1.5°C in an era of overshoot" with @roisinmoriarty.com
I'll present in the theme of "Highest possible mitigation ambition under overshoot":
"Towards a framework for aligning national mitigation scenarios with 1.5°C in an era of overshoot" with @roisinmoriarty.com
September 29, 2025 at 10:54 AM
I'm on my way to Vienna to participate in the first Overshoot Conference, at IIASA.
I'll present in the theme of "Highest possible mitigation ambition under overshoot":
"Towards a framework for aligning national mitigation scenarios with 1.5°C in an era of overshoot" with @roisinmoriarty.com
I'll present in the theme of "Highest possible mitigation ambition under overshoot":
"Towards a framework for aligning national mitigation scenarios with 1.5°C in an era of overshoot" with @roisinmoriarty.com
The mood must be great at Climate Week 🫠
September 23, 2025 at 4:18 PM
The mood must be great at Climate Week 🫠
Thanks, I’ll share that nice fact with the angry landowners
August 31, 2025 at 5:54 PM
Thanks, I’ll share that nice fact with the angry landowners
Some photos I took today of signs around farms on the Cork-Kinsale greenway - “no one is anti-greenway”, they say.
August 30, 2025 at 8:47 PM
Some photos I took today of signs around farms on the Cork-Kinsale greenway - “no one is anti-greenway”, they say.
Why the climate zeitgeist may have gone from apathy to fatalism, beautifully captured by @rebeccasolnit.bsky.social
August 13, 2025 at 8:38 PM
Why the climate zeitgeist may have gone from apathy to fatalism, beautifully captured by @rebeccasolnit.bsky.social
Our new journal paper has hit the front pages and got wide coverage on the airwaves this morning.
The paper critically assesses “temperature neutrality” as a basis for Ireland’s long-term climate target. We find it amounts to backsliding on climate ambition and locks in food system unfairness.
The paper critically assesses “temperature neutrality” as a basis for Ireland’s long-term climate target. We find it amounts to backsliding on climate ambition and locks in food system unfairness.
August 12, 2025 at 7:05 AM
Our new journal paper has hit the front pages and got wide coverage on the airwaves this morning.
The paper critically assesses “temperature neutrality” as a basis for Ireland’s long-term climate target. We find it amounts to backsliding on climate ambition and locks in food system unfairness.
The paper critically assesses “temperature neutrality” as a basis for Ireland’s long-term climate target. We find it amounts to backsliding on climate ambition and locks in food system unfairness.
Also - very alarming to see such a resurgence in gas-fired power generation due to data centres across the world
August 8, 2025 at 2:14 PM
Also - very alarming to see such a resurgence in gas-fired power generation due to data centres across the world
Nice to see a familiar graph replicated in this @data.ft.com deep-dive on data centres and how they're powered.
August 8, 2025 at 2:14 PM
Nice to see a familiar graph replicated in this @data.ft.com deep-dive on data centres and how they're powered.
Probably the strongest lobby for HVO is “The Alliance for Zero Carbon Heating” (TAZCH), an appallingly misleading name for a coalition of the liquid fuels and oil boiler industries. Their latest report emphasises the hassle and expense of actual clean heat.
static1.squarespace.com/static/6124d...
static1.squarespace.com/static/6124d...
August 7, 2025 at 6:58 AM
Probably the strongest lobby for HVO is “The Alliance for Zero Carbon Heating” (TAZCH), an appallingly misleading name for a coalition of the liquid fuels and oil boiler industries. Their latest report emphasises the hassle and expense of actual clean heat.
static1.squarespace.com/static/6124d...
static1.squarespace.com/static/6124d...
Billionaire AI investor Dermot Desmond believes driverless cars and AI will solve congestion 🫤
Dublin is one of the world’s most congested cities and doesn’t have a single metro line. I think it’s more likely that autonomous vehicles will make traffic worse if drivers don’t need to pay attention.
Dublin is one of the world’s most congested cities and doesn’t have a single metro line. I think it’s more likely that autonomous vehicles will make traffic worse if drivers don’t need to pay attention.
August 5, 2025 at 7:14 AM
Billionaire AI investor Dermot Desmond believes driverless cars and AI will solve congestion 🫤
Dublin is one of the world’s most congested cities and doesn’t have a single metro line. I think it’s more likely that autonomous vehicles will make traffic worse if drivers don’t need to pay attention.
Dublin is one of the world’s most congested cities and doesn’t have a single metro line. I think it’s more likely that autonomous vehicles will make traffic worse if drivers don’t need to pay attention.
Gorgeous video of a cute red squirrel foraging for hazelnuts outside my office window at the Ellen Hutchins Building @ucc.ie captured by @finorgan.bsky.social.
This land was bare when I started by PhD there many years ago, since has become a beautiful wild woodland.
www.youtube.com/watch?v=cIgz...
This land was bare when I started by PhD there many years ago, since has become a beautiful wild woodland.
www.youtube.com/watch?v=cIgz...
July 30, 2025 at 3:15 PM
Gorgeous video of a cute red squirrel foraging for hazelnuts outside my office window at the Ellen Hutchins Building @ucc.ie captured by @finorgan.bsky.social.
This land was bare when I started by PhD there many years ago, since has become a beautiful wild woodland.
www.youtube.com/watch?v=cIgz...
This land was bare when I started by PhD there many years ago, since has become a beautiful wild woodland.
www.youtube.com/watch?v=cIgz...
Simply wonderful that data is still published like this - on PDF.
July 30, 2025 at 10:43 AM
Simply wonderful that data is still published like this - on PDF.
We found a Goat Moth caterpillar - an impressive beast!
July 27, 2025 at 7:31 PM
We found a Goat Moth caterpillar - an impressive beast!
This graph is from the Environmental Impact Assessment report of a proposed data centre here in Ireland that claims to be "in compliance with" the national climate commitments, despite planning to be powered with on-site generation using gas.
June 30, 2025 at 11:57 AM
This graph is from the Environmental Impact Assessment report of a proposed data centre here in Ireland that claims to be "in compliance with" the national climate commitments, despite planning to be powered with on-site generation using gas.
The remains of this building - the Hiroshima dome - have been preserved.
June 16, 2025 at 10:19 AM
The remains of this building - the Hiroshima dome - have been preserved.