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Kees van der Leun Profile picture
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9 Jan, 18 tweets, 5 min read
Ouch. Look at the enormous difference between Dutch and German average home insulation: the Dutch ones lose 2.4 times as much heat as the German ones!
(OK, it's probably not a scientific conclusion, since it depends on where tado° sold its thermostats, but a sample of 80,000 homes is pretty impressive)
Any more details, @tado?
Map via @AnthropoceneAr1, who also add the source:
In any case, it is an appealing way to check the insulation of your home (although the outcome does depend on wind speed).
Many homes have smart thermostats now. Here's the data from our Atag One: In a night of approx 0°C (like in the map), we lost about 1.4°C in 5 hours.
Now show us your data ;!
About 2⁰C in the first 5 hours here:
4 to 5⁰C in 5 hours here. But action is on its way now!
Also around 4 to 5⁰C in 5 hours.
5⁰C in 5 hours, with some valuable context, and action underway!
0.5⁰C per 5 hours, well-insulated and with floir heating.
Looks like ~0.5⁰C per 5 hours too. Passivhaus = very well insulated, and I guess your suspicion is right ;)
Just to be clear: the map is not a scientific result (check my 2nd tweet in this thread). And there's other factors than insulation playing a role here, such as the share of apartments (but then, terraced houses should be better insulated), and thermal mass.
But it's great to see the activity and discussion it triggers. I'll definitely try to get in touch with @tado for more on this study, and look for other comparative data. Probably available, but may well look a bit more dull ;)
Some of you think the difference between the Netherlands and Germany is that more of Germany's houses are from the post-WW2 period. Not so.
In NL, 81.2% of all homes are post-WW2: clo.nl/indicatoren/nl…
In Germany, it's more like 75%: destatis.de/DE/Themen/Gese…
Come to think of it: thermal mass could be quite a factor in the NL-Germany difference. I have the impression (not supported by data) that German homes are built 'heavier' than Dutch ones, losing temperature more slowly.
I would edit that first tweet a bit, if I could ;)
Best one so far: only around 0.2°C temperature loss in 5 hours! Built in 2020, has ventilation heat recovery.
One aspect that is directly linked to the rate of temperature drop that we see in the map: flexibility.

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More from @Sustainable2050

Kees van der Leun Profile picture
8 Jan
The source for that story on German Lufthansa carrying out 18,000 unnecessary flights to protect its landing rights: Frankfurter Allgemeine Zeitung of 23 December. Thread.
faz.net/aktuell/wirtsc…
Lufthansa CEO Spohr: in our winter timetable, we had to cancel 33,000 flights due to lack of demand. "But we have to carry out another 18,000 unnecessary flights this winter, just to keep our start and landing rights. ..
While climate-friendly exception regulations have been found in almost all other parts of the world, the EU does not allow this in the same way. That's bad for climate and the opposite of the aims of the EC's #Fitfor55 program."
Read 5 tweets
Kees van der Leun Profile picture
8 Jan
The December average of atmospheric CO2 at Mauna Loa was 416.7 ppm, that's 2.45 ppm higher than last year. Overall, still speeding in the wrong direction!
The 2021 average of atmospheric CO2 measured at Mauna Loa was 416.45 ppm. That's 2.21 ppm higher than last year, and 24.6 ppm higher than ten years before.
The increase in atmospheric CO₂ concentration will slow down once we reduce emissions. And concentration will start to go down sometime before we reach net-zero. This article says: once we reduced emissions by ~70% (carbonbrief.org/explainer-will…)
Read 4 tweets
Kees van der Leun Profile picture
7 Jan
The gas extraction from the Dutch Groningen field this winter will be 3.7 billion m³ higher than announced before.
That's less than the space left empty in Dutch gas storages this summer (over 6 billion m³). For commercial/tactical reasons, only 60% of their capacity was filled. Image
I keep reading that one of the reasons that more gas will be extracted from the Groningen field is that the construction of a nitrogen* factory near Zuidbroek is delayed. But nowhere it says by how much, and compared to what time schedule.
Last April, @Gasunie already said it would only be operational in April 2022, so after this winter. gasunie.nl/nieuws/start-a…

*) nitrogen needs to be added to imported gas to give it the composition of Groningen gas, to which boilers etc. are tuned here.
Read 8 tweets
Kees van der Leun Profile picture
31 Dec 21
Now we'll finally have our new government in the Netherlands (ETA 10 January), with a Minister for Climate and Energy from the @D66 party, I'm rereading the Climate & Energy part of the coalition agreement (kabinetsformatie2021.nl/binaries/kabin…)
Thread.
"We strive for the #ParisAgreement goal of max. 1.5°C warming". Good!

"We will raise the 2030 emission reduction goal from -49% to -55%. That's a firm commitment, and to make sure we achieve it, we'll aim our policies at -60% by 2030." Smart thing to do.
"We will also aim for -70% by 2035 and -80% by 2040. For that, we will make preparations to introduce road pricing and to build nuclear power plants."
Road pricing is long overdue, imo.
Read 21 tweets
Kees van der Leun Profile picture
30 Dec 21
30 December: wildfire triggers evacuations in Colorado
This from Superior, Colorado, a NW suburb of Denver.
And yes, climate change is a factor here:
Read 13 tweets
Kees van der Leun Profile picture
7 Dec 21
Now starting: Webinar on scaling up biomethane in Europe. With an impressive line-up of companies across the value chain, and participation of European Commissioner for Energy @KadriSimson
Supported by my colleague Daan Peters. Image
@KadriSimson You can still join, I think:
gasforclimate2050.eu/news-item/regi… Image
.@KadriSimson: In the medium and long term, we'll need to replace unmitigated natural gas and reduce methane emissions. Biomethane can play an important role here. With the second part of our #Fitfor55 package, due mid-December, we will promote biomethane production and use. Image
Read 16 tweets

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