Trevor Johnston
@beerwithsubtitles.net
Tracking Irish renewable generation at @greencollective.io since 2020 · Google 2007-2019 · Zürich, New York, Dublin
30+ years now of footering about with technical stuff for pleasure and for profit, and an Apple user every day of the year...but I've yet to get iMessage setup just the way I'd like 🤬
January 8, 2026 at 2:39 PM
30+ years now of footering about with technical stuff for pleasure and for profit, and an Apple user every day of the year...but I've yet to get iMessage setup just the way I'd like 🤬
I unfortunately only really got into Jeopardy *far* too late into my time in the US -- it was a long-time hold-out from streaming and so, when I left the US and my little TV aerial behind, I figured we were done. But next-day episodes on Peacock was one of of the best things happen in TV in 2025.
"What is..."?
Any other Jeopardy fans here? We leapt out of our seats when we heard @kenjennings.bsky.social read this one!
(these days, Ardnarusha pumps out 40-50GWh each month over the winter -- only a little over 1% of the island's electricity needs but still going strong!)
Any other Jeopardy fans here? We leapt out of our seats when we heard @kenjennings.bsky.social read this one!
(these days, Ardnarusha pumps out 40-50GWh each month over the winter -- only a little over 1% of the island's electricity needs but still going strong!)
January 8, 2026 at 1:55 PM
I unfortunately only really got into Jeopardy *far* too late into my time in the US -- it was a long-time hold-out from streaming and so, when I left the US and my little TV aerial behind, I figured we were done. But next-day episodes on Peacock was one of of the best things happen in TV in 2025.
Why revamp the county rankings?
Treating wind and solar separately, things just don't vary that much month-to-month -- new plants being few and far between. However, renewables as a *whole* varies a lot throughout the year, e.g. solar in summer and hydro in winter.
Should be much more interesting!
Treating wind and solar separately, things just don't vary that much month-to-month -- new plants being few and far between. However, renewables as a *whole* varies a lot throughout the year, e.g. solar in summer and hydro in winter.
Should be much more interesting!
The final "Irish Grid Monthly" of 2025 is now available on our website.
Just a few of the topics covered:
- new wind *and* battery records 🍃 🔋
- low solar generation ☀️
- we've revamped our county rankings 🥇
- ongoing issues with unit-level generation data ⚙️
www.greencollective.io/post/monthly...
Just a few of the topics covered:
- new wind *and* battery records 🍃 🔋
- low solar generation ☀️
- we've revamped our county rankings 🥇
- ongoing issues with unit-level generation data ⚙️
www.greencollective.io/post/monthly...
Irish Grid Monthly: December 2025
www.greencollective.io
January 7, 2026 at 1:49 PM
Why revamp the county rankings?
Treating wind and solar separately, things just don't vary that much month-to-month -- new plants being few and far between. However, renewables as a *whole* varies a lot throughout the year, e.g. solar in summer and hydro in winter.
Should be much more interesting!
Treating wind and solar separately, things just don't vary that much month-to-month -- new plants being few and far between. However, renewables as a *whole* varies a lot throughout the year, e.g. solar in summer and hydro in winter.
Should be much more interesting!
Happened to catch this on the BBC1 news, too: renewables in GB in 2025.
Although the TV folk were confusing TW/TWh and (weirdly) the UK with the island of Great Britain, I've a hard time imagining RTÉ doing the same for the island of Ireland's grid *on January 2*!
www.bbc.com/news/article...
Although the TV folk were confusing TW/TWh and (weirdly) the UK with the island of Great Britain, I've a hard time imagining RTÉ doing the same for the island of Ireland's grid *on January 2*!
www.bbc.com/news/article...
Record year for wind and solar electricity in Great Britain in 2025
Wind, solar and other renewables hit a new high last year but the government is still some way off its clean power target.
www.bbc.com
January 7, 2026 at 1:30 PM
Happened to catch this on the BBC1 news, too: renewables in GB in 2025.
Although the TV folk were confusing TW/TWh and (weirdly) the UK with the island of Great Britain, I've a hard time imagining RTÉ doing the same for the island of Ireland's grid *on January 2*!
www.bbc.com/news/article...
Although the TV folk were confusing TW/TWh and (weirdly) the UK with the island of Great Britain, I've a hard time imagining RTÉ doing the same for the island of Ireland's grid *on January 2*!
www.bbc.com/news/article...
Happy with this one, *particularly* considering we were (highly unusual for us, who care much more about Christmas than the New Year -- often in bed before midnight) both out until about 3am the night before 😵💫
Taking it easy today!
Taking it easy today!
Happy new year! 🎈
December's "Irish Grid Monthly" is out!
A few highlights:
- new wind and battery records 🍃 🔋
- low solar ☀️
- revamped county ranking section 🥇
- carbon emissions 🏭
- ongoing issues with unit-level data ⚙️
And much more!
Free to all newsletter subscribers -- sign up today!
December's "Irish Grid Monthly" is out!
A few highlights:
- new wind and battery records 🍃 🔋
- low solar ☀️
- revamped county ranking section 🥇
- carbon emissions 🏭
- ongoing issues with unit-level data ⚙️
And much more!
Free to all newsletter subscribers -- sign up today!
January 2, 2026 at 10:18 AM
Happy with this one, *particularly* considering we were (highly unusual for us, who care much more about Christmas than the New Year -- often in bed before midnight) both out until about 3am the night before 😵💫
Taking it easy today!
Taking it easy today!
Badge unlocked (literally): solved Wordle in 1 guess 🏅 💥
December 31, 2025 at 10:05 AM
Badge unlocked (literally): solved Wordle in 1 guess 🏅 💥
I just completed "Movie Theater" - Day 9 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/9
Day 9 - Advent of Code 2025
adventofcode.com
December 28, 2025 at 12:20 PM
I just completed "Movie Theater" - Day 9 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/9
I just completed "Playground" - Day 8 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/8
Day 8 - Advent of Code 2025
adventofcode.com
December 27, 2025 at 7:35 AM
I just completed "Playground" - Day 8 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/8
Emerging from Christmas food and TV hibernation just long enough to assemble this wee post.
We noticed the Christmas Day afternoon peak years ago but never the Easter Sunday (?); the data doesn't lie! 🤷♂️
We noticed the Christmas Day afternoon peak years ago but never the Easter Sunday (?); the data doesn't lie! 🤷♂️
December 25 is just about the only day when electricity demand in Ireland peaks around lunchtime rather than in the evening 🎄
When else can you expect this behaviour? Easter Sunday. We love our roasts! 🍗
Renewables supplied over half of this year's Christmas Day electricity 🔌
#SpeirGorm
When else can you expect this behaviour? Easter Sunday. We love our roasts! 🍗
Renewables supplied over half of this year's Christmas Day electricity 🔌
#SpeirGorm
December 26, 2025 at 3:27 PM
Emerging from Christmas food and TV hibernation just long enough to assemble this wee post.
We noticed the Christmas Day afternoon peak years ago but never the Easter Sunday (?); the data doesn't lie! 🤷♂️
We noticed the Christmas Day afternoon peak years ago but never the Easter Sunday (?); the data doesn't lie! 🤷♂️
Sad but unsurprised to see the end of the Christmas Eve broadcast from Grafton Street, as their new favourite presenter obviously wouldn't be caught dead in the city centre (maybe it's okay: the number of kids belting out "Jingle Bells" had almost dropped to zero in recent years anyway).
#SpeirGorm
#SpeirGorm
December 24, 2025 at 9:46 AM
Sad but unsurprised to see the end of the Christmas Eve broadcast from Grafton Street, as their new favourite presenter obviously wouldn't be caught dead in the city centre (maybe it's okay: the number of kids belting out "Jingle Bells" had almost dropped to zero in recent years anyway).
#SpeirGorm
#SpeirGorm
For the past few days, we've been trialling our new pipeline: perfect alignment of the most important EirGrid/SEMO feeds for *little* more accuracy, and more work pushed out to the database for a *lot* less operational load.
All going well, nobody will notice! 🤞
All going well, nobody will notice! 🤞
Renewable generation and discharging storage equalled 21% of yesterday's electricity demand, with a peak of 34% at 04:15. Fossil fuel generation (mostly gas) equalled 54% of demand. 0% of generation was exported, 26% of demand was met by imports.
December 22, 2025 at 12:31 PM
For the past few days, we've been trialling our new pipeline: perfect alignment of the most important EirGrid/SEMO feeds for *little* more accuracy, and more work pushed out to the database for a *lot* less operational load.
All going well, nobody will notice! 🤞
All going well, nobody will notice! 🤞
I just completed "Laboratories" - Day 7 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/7
Day 7 - Advent of Code 2025
adventofcode.com
December 21, 2025 at 8:57 PM
I just completed "Laboratories" - Day 7 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/7
I just completed "Trash Compactor" - Day 6 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/6
Day 6 - Advent of Code 2025
adventofcode.com
December 14, 2025 at 3:43 PM
I just completed "Trash Compactor" - Day 6 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/6
I just completed "Cafeteria" - Day 5 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/5
Day 5 - Advent of Code 2025
adventofcode.com
December 14, 2025 at 7:51 AM
I just completed "Cafeteria" - Day 5 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/5
I just completed "Printing Department" - Day 4 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/4
Day 4 - Advent of Code 2025
adventofcode.com
December 13, 2025 at 3:50 PM
I just completed "Printing Department" - Day 4 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/4
I just completed "Lobby" - Day 3 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/3
Day 3 - Advent of Code 2025
adventofcode.com
December 13, 2025 at 8:17 AM
I just completed "Lobby" - Day 3 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/3
I just completed "Gift Shop" - Day 2 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/2
Day 2 - Advent of Code 2025
adventofcode.com
December 11, 2025 at 8:59 AM
I just completed "Gift Shop" - Day 2 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/2
I just completed "Secret Entrance" - Day 1 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/1
Day 1 - Advent of Code 2025
adventofcode.com
December 6, 2025 at 8:23 PM
I just completed "Secret Entrance" - Day 1 - Advent of Code 2025 #AdventOfCode adventofcode.com/2025/day/1
Yesterday likely to prove the "most Christmas-y" day:
- start "Hogfather", over a fine imperial stout 📖 🍺
- dinner at the Christmas market 🌮
- Nils Landgren "Christmas with my friends" concert 🎺
(also had the plumber in, and DIY on the bed...that chaos was actually the *most* Christmas-y thing)
- start "Hogfather", over a fine imperial stout 📖 🍺
- dinner at the Christmas market 🌮
- Nils Landgren "Christmas with my friends" concert 🎺
(also had the plumber in, and DIY on the bed...that chaos was actually the *most* Christmas-y thing)
December 4, 2025 at 8:32 AM
Yesterday likely to prove the "most Christmas-y" day:
- start "Hogfather", over a fine imperial stout 📖 🍺
- dinner at the Christmas market 🌮
- Nils Landgren "Christmas with my friends" concert 🎺
(also had the plumber in, and DIY on the bed...that chaos was actually the *most* Christmas-y thing)
- start "Hogfather", over a fine imperial stout 📖 🍺
- dinner at the Christmas market 🌮
- Nils Landgren "Christmas with my friends" concert 🎺
(also had the plumber in, and DIY on the bed...that chaos was actually the *most* Christmas-y thing)
Got it!
Spotted this in paperback at @gutterbookshop.bsky.social only a few days after release and obviously had to grab it -- but very much still hoping to pick up a complete trilogy with the @emberwickart.bsky.social covers at some point (should look amazing beside my old Discworlds) 🤓
Spotted this in paperback at @gutterbookshop.bsky.social only a few days after release and obviously had to grab it -- but very much still hoping to pick up a complete trilogy with the @emberwickart.bsky.social covers at some point (should look amazing beside my old Discworlds) 🤓
Pre-ordered!
The first two in this series came along at just the right time for me and I absolutely devoured them.
(side quest: how do I get *these* covers in Europe?)
The first two in this series came along at just the right time for me and I absolutely devoured them.
(side quest: how do I get *these* covers in Europe?)
Oh, hi there! It's cover reveal day for Brigands & Breadknives, with art yet again by the amazing @emberwickart.bsky.social-
I love it so ❤️
Coming Nov 11 '25 from @torbooks.bsky.social-
I love it so ❤️
Coming Nov 11 '25 from @torbooks.bsky.social-
November 30, 2025 at 4:10 PM
Got it!
Spotted this in paperback at @gutterbookshop.bsky.social only a few days after release and obviously had to grab it -- but very much still hoping to pick up a complete trilogy with the @emberwickart.bsky.social covers at some point (should look amazing beside my old Discworlds) 🤓
Spotted this in paperback at @gutterbookshop.bsky.social only a few days after release and obviously had to grab it -- but very much still hoping to pick up a complete trilogy with the @emberwickart.bsky.social covers at some point (should look amazing beside my old Discworlds) 🤓
Badge unlocked: actually bought something in a "Black Friday" "sale" 😬
Current TV refresh rate: once roughly each 10-15 years ♻️
Current TV refresh rate: once roughly each 10-15 years ♻️
November 30, 2025 at 3:42 PM
Badge unlocked: actually bought something in a "Black Friday" "sale" 😬
Current TV refresh rate: once roughly each 10-15 years ♻️
Current TV refresh rate: once roughly each 10-15 years ♻️
We've been holding off on declaring records based on the new real-time battery data until metered figures are published (usually next day) and this was *so* much higher than the previous record of 275MW we figured it might be a mistake...but no, looks like the data's pretty reliable 🎯
🚨 Battery discharge early yesterday evening reached a new all-time high of 396MW, equal to 5.6% of electricity demand at the time.
Cork's Aghada plant the biggest contributor.
Recent changes in scheduling and dispatch already making a difference on these high demand, low wind nights.
Cork's Aghada plant the biggest contributor.
Recent changes in scheduling and dispatch already making a difference on these high demand, low wind nights.
November 27, 2025 at 12:11 PM
We've been holding off on declaring records based on the new real-time battery data until metered figures are published (usually next day) and this was *so* much higher than the previous record of 275MW we figured it might be a mistake...but no, looks like the data's pretty reliable 🎯
Reposted by Trevor Johnston
its on github. i uploaded it up on bitbucket. its running in a docker container on gleeple. im selfhosting it on feep. its on a virtual environment in pooble. bro its literally on weewee
April 24, 2025 at 7:04 PM
its on github. i uploaded it up on bitbucket. its running in a docker container on gleeple. im selfhosting it on feep. its on a virtual environment in pooble. bro its literally on weewee
"Junior Cert essay" the best take-down I've seen yet of the Collison essay 😆
(mine, less amusing: why would anyone want planning advice from a guy who relocated his mega-corp from downtown San Francisco to the suburbs with no apparent attempt to use his sway to improve the city?)
(mine, less amusing: why would anyone want planning advice from a guy who relocated his mega-corp from downtown San Francisco to the suburbs with no apparent attempt to use his sway to improve the city?)
This ... that Collison junior-cert essay ... the attacks on judicial reviews.
You'd swear they all looked at Musk's DOGE and thought it was something to try over here.
You'd swear they all looked at Musk's DOGE and thought it was something to try over here.
Bureaucracy, indecisiveness, and institutional inertia is acting as a hidden tax on progress, Minister of State Robert Troy has warned
November 14, 2025 at 10:11 AM
"Junior Cert essay" the best take-down I've seen yet of the Collison essay 😆
(mine, less amusing: why would anyone want planning advice from a guy who relocated his mega-corp from downtown San Francisco to the suburbs with no apparent attempt to use his sway to improve the city?)
(mine, less amusing: why would anyone want planning advice from a guy who relocated his mega-corp from downtown San Francisco to the suburbs with no apparent attempt to use his sway to improve the city?)
Firm belief: free parking is theft.
My dream world: you don't get to object to parking charges on the grounds that public transport isn't good enough unless you've previously advocated for...better public transport.
Likely scenario: the paid parking was going to be, like, €1/day anyway 🤦♂️
My dream world: you don't get to object to parking charges on the grounds that public transport isn't good enough unless you've previously advocated for...better public transport.
Likely scenario: the paid parking was going to be, like, €1/day anyway 🤦♂️
A proposal to bring in charges at coastal car parks prompted a flood of objections from Fingal residents. The charges would unfairly penalise people who’ve no option other than to drive because of a lack of viable public transport options to the beach, said one.
A proposal to bring in charges at coastal car parks prompts a flood of objections from Fingal residents
The charges would unfairly penalise people who’ve no option other than to drive because of a lack of viable public transport options to the beach, said one.
www.dublininquirer.com
November 14, 2025 at 9:24 AM
Firm belief: free parking is theft.
My dream world: you don't get to object to parking charges on the grounds that public transport isn't good enough unless you've previously advocated for...better public transport.
Likely scenario: the paid parking was going to be, like, €1/day anyway 🤦♂️
My dream world: you don't get to object to parking charges on the grounds that public transport isn't good enough unless you've previously advocated for...better public transport.
Likely scenario: the paid parking was going to be, like, €1/day anyway 🤦♂️