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Kees van der Leun Profile picture
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16 Oct, 4 tweets, 2 min read
Solar carport at @UniUtrecht (with EV chargers) Image
.. and room for some more of those :) Image
It's a @WeDriveSolar system. Image
(And I’d have a look at those developing rust spots ;)

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More from @Sustainable2050

Kees van der Leun Profile picture
17 Oct
Current extremely high natural gas price in the Netherlands drives boom in anything that lowers consumption: hybrid heat pumps, insulation works, DIY materials. The right response! nos.nl/l/2402036
The best part of reducing your gas demand in times of scarcity is that every m³ saves reduces the price of the remaining m³, by cooling the market.
Somehow, you'd expect govt to be more vocal on the importance of energy conservation now, especially after just announcing a €3 billion handout to compensate everyone for the high energy prices.
Read 4 tweets
Kees van der Leun Profile picture
17 Oct
Watching a webinar on the Dutch hydrogen backbone: Hyway27. Govt budget 2022 has funding for it. streamxpert.nl/hyway27webinar… Image
Modeled hydrogen flows in 2030 over the backbone infrastructure in the Netherlands, with the planned 3-4 GW of electrolyzer capacity, in PJ/year.
10 PJ = 2.8 TWh = 8,000 tonnes of hydrogen. Image
The idea is to use existing gas pipelines, becoming available as the Groningen gas field has to ramp down production.
The repurposing costs are estimated at just €0.4 million per km (cleaning, preparing, valve replacement) vs over €3 million for a new pipeline. Image
Read 11 tweets
Kees van der Leun Profile picture
16 Oct
Listening #ClimateMiles podcast with climate scientist @HeleendeConinck. “World needs to go to net-zero emissions by 2050, but rich countries should be there before, e.g. 2040.
The Netherlands govt doesn’t (even) have a plan yet for net-zero by 2050.” theclimatemiles.nl/podcast/dag-5-…
Good point that we don’t have a plan yet for net-zero emissions from the Netherlands by 2050. Would be a good basis for exploring net-zero by 2040 too. Things will change in the meantime (solutions can also get cheaper than expected), but it’s good to know what it looks like.
Here’s TU/e’s @HeleendeConinck with Red Cross climate expert Maarten van Aalst: EU Green Deal and NL govt plans should have net-zero emissions target for 2040 (not 2050) nos.nl/l/2401896
Read 5 tweets
Kees van der Leun Profile picture
6 Aug
Materials extracted and used globally, now two times the sustainable threshold. "Virtually all of this overshoot is being driven by excess consumption in high-income nations."
@jasonhickel in Less is More Image
That's 12 tonnes of material per year per person, and no doubt very unevenly distributed. A tonne of stuff on your doorstep for each person in your household, every month. More if you live in a rich country. Whoa.
Ah wait, there's the distribution already! Make that 28 tonnes of materials per person per year, for a high-income country... Image
Read 22 tweets
Kees van der Leun Profile picture
18 Jul
If you want to attack the #EUGreenDeal and #Fitfor55, focus on the cost and leave out the benefits. Even better: only look at investment costs and leave out annual (fossil fuel) cost savings too. We can see this recipe being applied in many places now.
Then: all of a sudden, care a lot about poor people, and frame them as the victims, even though #Fitfor55 has specific proposals to prevent that. By some mental gymnastics, pretend that said poor people have SUVs and travel by plane.
And of course, nurture the myth of the EC as a huge bureaucracy (in reality, it's one of the leanest civil services around), and suggest it can force the package on us (while in real life this has to be approved both by a parliament we chose and by our national governments).
Read 8 tweets
Kees van der Leun Profile picture
17 Jul
In the meantime in Oregon, NW-US. Massive wildfire already burned 1,080 km².
And in northern California, fears are that 'dry lightning' will ignite new fires tomorrow.
Smoke over North America.
Read 4 tweets

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