AukeHoekstra Profile picture
May 25, 2021 15 tweets 7 min read Read on X
Livetweeting the inaugural lecture of my pal @ReintJanRenes of the @HvA about "the climate split".

He's an expert in behavior and climate and important researcher in 'my' NEONresearch.nl.

He starts with a round table with the rector of the HvA, and @helgavanleur and...
Amsterdam councilor or sustainability @mvdoorninck explains her run in with NIMBY and windmills. Love that she says this is the biggest transition since the industrial revolution. Agree 100%. And of course the point that everybody must have a say in this enormous transition.
More information in the booklet that I will link to later

What he WILL tell:

Why climate is important?

Why behavior is important?

Why changing behavior is so hard?

What can we (and @ReintJanRenes and his group) and do about it.
Papers are increasingly talking about the climate emergency. ReintJan sums up why.
Personal choices are (directly and indirectly) responsible for 84% of emissions.
So we should not say Shell has to solve it. We have to solve it together.
1) Some behavioral changes are hard and require automatic behaviors.
2) We have to do it together. Which is often hard when you think: what does it matter.
3) It can be hard if you feel it's not about you

4) The time horizon (the long and winding road) is long

5) It's abstract. You can't see CO2 and it's all so far away.
What can we do? For action we need
- capacity (that we have time to think about it etc.)
- motivation (why is it useful? who am I? etc.)
- occasion (social influence, rules/regulation, etc.)
Often this is not yet part of policy.
They work with the spark circle (not to be confused with my sparkcity model ;-)

This is going to fast for me but it's similar to the Deming quality circle but more specified for research into behavior. And this leads to specific interventions that work.
The entire team of the electorate. Milan and Helena are working for NEONresearch.nl with the other PhD students.
He is mentioning me as the person that got him to join NEON! I did not expect that. Back at ya @ReintJanRenes ! Really look forward to our collaboration and combining technology and behavior to create really useful pathways to sustainability.
Thanking all the people and organisations that brought him to this historical moment. I'm (Auke) am often thinking we are all standing on the shoulders of giants and our institutions that we build over the year. The End.
It's official (if you look real closely).
A link to the booklet (in Dutch) with a lot of theory but a simple conclusion: preaching won't work and we can only create this transition if we acknowledge the worldview of others and honestly try to understand what drives *them*. hva.nl/content/evenem…

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More from @AukeHoekstra

Jun 17
The official report on the blackout in Spain and Portugal is just released. I'll give a quick summary of findings and provide some additional info.

TL;DR
conventional power plants didn't control the voltage as planned
over-voltage caused renewables to turn off as required
The report (of which only press reports are available) points the finger to

1 conventional backup plant taken offline for maintenance without replacement being arranged

9 other conventional backup plants, of which every one had a degree of non-compliance
uk.news.yahoo.com/spain-reveals-…
Renewables also had a role: "tension was very high and sustained, causing the disconnection of generators".


An inside source tells me the voltage went above 110% in many places and solar was required to switch off, which meant 8GW was lost all at once.elpais.com/economia/2025-…
Read 5 tweets
Jun 10
Just made a visualization for myself about the unprecedented growth in solar that I thought I might share.

From 1880 to 1950 all electricity came from fossil+hydro. Then nuclear briefly grew with market share increasing with up to 1% per year in 1985.

Now solar takes over. Image
I've described in more detail in a substack post:

There's more info on each picture there.aukehoekstra.substack.com/p/the-coming-s…
I made this picture because I think you forget what is happening when you look at total final energy. Renewables seem so tiny! Image
Read 8 tweets
Jun 9
I see this a lot:

Conservatives who *just know* that nuclear is better than solar and thus blame their favorite scapegoat *the government* for solar doing better.

But in reality it's the opposite: the market likes solar so much that not even the government can save nuclear.
I guess Andre's attention for me is due to my being irritated at his fact free diatribes of pseudo-scientific nonsense:


So now he sees reacting to me as a way to get attention?
And I'm reacting again, so maybe I'm being duped?
Anyhow...
Let's start with some quantifiable facts. (Things this conservative armchair energy philosopher is allergic to.)
First thing we notice is that solar and wind are clearly surpassing nuclear (though the new leadership of the department of energy denies it).
Image
Read 19 tweets
May 18
Many people think solar and wind won't be able to keep the grid stable because they lack "inertia".

I think solar, wind and batteries will do a BETTER job and I think you can explain it thus:
- the old grid is a record player
- the new grid a digital player
🧵 Image
If you play vinyl records, the rotating mass of the turntable is used to keep the speed steady. This leads some vinyl enthusiasts to seek more mass because that will keep things more steady.

This turntable by Excel audio attaches a separate mass. (Overkill but makes my point.) Image
In the same way the inertia in the rotors of current power plants helps the grid to keep a steady 50 Hz (in e.g. Europe) or 60 Hz (in e.g. the US) frequency.

These machines turn a heavy copper coil wound around a heavy iron core and this helps keep the grid frequency steady. Image
Read 21 tweets
Aug 13, 2024
Great to see more and more attention for flexible grid pricing.

We must say goodbye to the "copper plate" that offers free power everywhere and every time. It's hideously expensive and outdated.

What we need is smart flexibility.
🧵
The underlying reason is that the costs of different components of the energy system changed:

Some remained high (e.g. pylons, fossil & nuclear)

Some plummeted (e.g. solar, wind, batteries, EVs & inverters)

Some became possible at all (e.g. measuring & steering in real time)
So now we should make good use of these new, clean, abundant and affordable options, even if it means doing things a bit differently than before.

So what should we do different regarding grid congestion pricing?
Read 20 tweets
Jul 28, 2024
Some are angry about the "anti-Christian depiction of the last supper" at the Olympic Opening ceremony. (@elonmusk and @realDonaldTrump among others)

A Dutch art historian explains it's not the last supper but a Dutch painting of the Olympic gods.
And I explain what I loved.
🧵
Image
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Original Dutch thread here. I just translated it.


@WSchoonenberg shows that the "tableau vivant" (living painting) is depicting "The Feast of the Gods" by Jan van Bijlert, from 1635.
Image
The heathen Gods have gathered on mount Olympus for a feast. Sun god Apollo is recognizable by his halo, Bacchus (Dionysus) by the grapes, Neptune (Poseidon) by his trident, Diana (Artemis) by the moon, Venus (Aphrodite) by Cupid.


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Read 24 tweets

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