Share this page!

Enter URL or ID to Unroll

You can paste full URL like: https://x.com/threadreaderapp/status/1644127596119195649
or just the ID like: 1644127596119195649

How to get URL link on X (Twitter) App

  1. On the Twitter thread, click on or icon on the bottom
  2. Click again on or Share Via icon
  3. Click on Copy Link to Tweet
  4. Paste it above and click "Unroll Thread"!
  5. More info at Twitter Help
AukeHoekstra Profile picture
@AukeHoekstra
Jun 14, 2022 • 26 tweets • 7 min read • Read on X
Scrolly
This is my plenary presentation to the EVS35 (an hour from now) about electrifying heavy trucks. I predict it will go faster than you think!

Please react to the individual slides if you have something to add. #EVS35OSLO
About me
Shout out to Avere for putting me on stage and hosting EVS35
King of the road but offensively unaerodynamic
To this: reduce aero drag in half
That's a massive eTruck advantage
Now about the powertrain
Right now it's a beast!
This is half measures
This is the future! Saves at least 2000 kg
Now about the chassis
Ladder frames are outdated
This is the future
Structural batteries!
And this is still pretty conservative.
Now let's run a business with them.
They will remain more expensive to buy+finance but...
Energy saving!
Gives a good business case, even without energy taxes.
Fortunately we do tax energy.
Which means a well designed eTruck has a great business case!
And it gets even better for fleet owners!
The can divide their fleet up in segments and partially buy cheaper short range trucks while hauling the same cargo!
My policy recommendations
And my summary conclusions
What do you think? Let us know in the comments below and don't forget to hit that like and subscribe button. (I'm joking. But honestly curious about any feedback/corrections you can give.)

• • •

Missing some Tweet in this thread? You can try to force a refresh
　

Keep Current with AukeHoekstra

AukeHoekstra Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @AukeHoekstra

AukeHoekstra Profile picture
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
AukeHoekstra Profile picture
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
AukeHoekstra Profile picture
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
AukeHoekstra Profile picture
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
AukeHoekstra Profile picture
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
AukeHoekstra Profile picture
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
Image
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.


Image
Image
Image
Image
Read 24 tweets

Did Thread Reader help you today?

Support us! We are indie developers!

This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Don't want to be a Premium member but still want to support us?

Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal

Or Donate anonymously using crypto!

Ethereum

0xfe58350B80634f60Fa6Dc149a72b4DFbc17D341E copy

Bitcoin

3ATGMxNzCUFzxpMCHL5sWSt4DVtS8UqXpi copy

Thank you for your support!

Follow Us!

Send Email!

:(