AukeHoekstra Profile picture
Oct 3 4 tweets 2 min read
I loved my Prius but this is another example of @Toyota misleadingly promoting the hybrid because they are behind on full EVs. It's a bit like their famous "self charging car" commercials.

A plugin does not save as much CO2 emissions as a full EV. Nowhere near actually.
In reality people with a privately owned plugin drive 51-55% on gasoline and company cars drive 85-89% on gasoline.
theicct.org/publication/re…

In the official EU tests plugin emissions are underestimated by a factor of 3-5. They are the new #dieselgate in the making.
So yes, I do worry that we get the materials for EV batteries in time, especially since so many people are buying gigantic SUVs. But many chemistries are possible and the market is creative.

Still, Toyota is not being truthful.
It's spreading FUD and selling snake oil.
P.s. And yes, IF battery materials are against a hard limit AND materials for fuel cells and electrolysis are abundant AND we have twice as many solar panels and wind turbines per car, THEN hydrogen is a great solution. But not one of these things is true, let alone all of them.

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More from @AukeHoekstra

Sep 21
Groningen could provide 30 BCM (billion cubic meters) of natural gas to Europe again.
That's per year.
And it's worth 45 billion Euro's.

We don't do it because it's "too dangerous".
0.05 people per year could die according to newest models.

45 billion to save 0.05 people...
I think other countries should kick some sense into Dutch politicians because this is beyond the pale with a war going on and countless people condemned to energy poverty.

Suicides this causes alone dwarf the gas pumping consequences for Groningen.
And with 45 billion you could basically give everybody in danger a wonderful new house and still save thousands of people in Groningen by e.g. providing better healthcare.

So please help us!
We are shooting ourselves in the foot while maiming Europe (incl. Ukraine).
Read 4 tweets
Sep 15
The @latimes just published an opinion piece that's makes a valid point (EVs are not a panacea) but then misses by exaggerating the CO2 emissions of EVs and the impact on the grid.
🧵
latimes.com/opinion/story/…
To be clear: EVs are just as dangerous to cyclists and pedestrians and take just as much parking and highway space.

And yes, EVs still emit a lot of CO2.

So I always advocate cycling, car sharing, and public transit: it makes a city nicer when you aren't driving a car.
But if you take into account the electricity mix that gets cleaner over the lifetime and include the latest battery manufacturing emissions we are already closer to 30% in most places.

And reducing emissions by a factor of 2 or 3 is nothing to sneeze at.
Read 8 tweets
Sep 15
Ethereum now uses 20x less energy!

Bitcoin and Ethereum behave very similarl in terms of valuation so if you want to reduce global warming I would choose Ethereum over Bitcoin!

coinmarketcap.com/currencies/bit…, coinmarketcap.com/currencies/eth…. ImageImage
Ethereum just completed a software update that changed the validation mechanism from proof of work to proof of stake. Some argue that proof of work is more democratic or safer but I'm not convinced and proof of stake is SO MUCH MORE EFFICIENT!
edition.cnn.com/2022/09/15/tec…
Why bother? I love the distributed ledger that cryptocurrencies offer. This enables the storage of data that you can trust to be immutable without a central organisation that can screw things up. It can e.g. act as a clearing house to settle transactions and exchange information.
Read 5 tweets
Sep 7
I agree. With one caveat:
BASELOAD IS DEAD

Thread with some support for that, mainly from @MLiebreich who's been banging this drum since 2012:
Here's a nice writeup by @chrisnelder from 2012: one of the first to write about baseload being doomed:
web.archive.org/web/2012041322…

Here's the link to the tweet with the above picture, admonishing the baseloaders (ie coal & nuclear fans):
Read 7 tweets
Sep 7
Polysilicon supply (to make solar cells) is going
through. the. roof!!

Almost ONE TERAWATT PER YEAR planned in 2025!

Thread to explain how MAJOR this is
(with a little “told you so” thrown in for good measure).
Two caveats:

1) These are *planned* investment into *polysilicon*.
But it's pretty sure most of this will happen and it is the most important and expensive part of solar cells...

2) Most of it is in China.
But hey, the rest of the world could easily produce the stuff too...
First let's plot that on my somewhat famous solar growth graph. To the left old graph, to the right the new one.

I can't be bothered to update it every year but as you can see it's (again off the charts).

Read 6 tweets
Sep 5
I love @KateRaworth but to be honest, I think solving the climate crisis is not really an economic problem and growing or shrinking GDP is a meaningless discussion.
Instead we should put behavioral scientists, engineers, and environmental scientists in the lead. I think.
🧵(rant)
To hear economist debate the issue always reminds me of "vital" discussions like "How many angels can dance on the head of a pin?".

I think the problem is how we can prosper within planetary boundaries and economists (esp. degrowthers) have very little understanding of that.
Also the main degrowth argument comes down to this:
"You cannot prove your plans for Green Growth can keep us within planetary boundaries.
So we need to Degrow."

To which my answer is:
"Show me your plan to achieve Degrowth..."

And then it turns out there is no realistic plan.
Read 15 tweets

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