Do I see future for PHEVs? Not really because adding the combustion drivetrain with its costs, maintenance and fuel use loses as battery prices go down.

But there's this too: they use massively more fuel than tests assume.
theicct.org/publications/p… Image
In practice this means 2-4 times more fuel pipe emissions of CO2 and NOx than currently assumed. And switching to WLTP doesn't really help either (and the ICCT agrees with me).

So if tests would be based on reality instead of the laboratory, this would be really bad for PHEVs.
And there's good news on the testing front. It seems the EU might be moving to reality based testing. Also the is more and more on road testing by institutes like @TheICCT informing policy.
theicct.org/publications/t… (ht @YoannBeber) Image
I cannot emphasise enough how important it is that we stop using #faketests to determine CO2 and NOx emissions. Once policy becomes based on reality, it will make the advantages of BEVs and the disadvantages of PHEVs en ICE-cars much clearer.
Also, I think most politicians and even car manufacturers are tired of all the energy expended in cheating. It goes on and on and on. All that energy could be spend on improving the technology and saving lives.

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More from @AukeHoekstra

19 Oct
New lithium ion battery longevity is amazing:
up to 3.5 MILLION km!

And this will lead to vehicle to grid!

Not just my opinion but that of battery prof. Jeff Dahn expressed in a recent (Sept 20th 2020) presentation.

Short thread

ht @Joost57437492
You might already have heard about their paper showing charts like these that indicate well designed batteries could last up to ten times more km than the car. Image
When charging and discharging is partial the battery lasts even longer.

I've been saying for a long time that V2G is a good idea but only when it doesn't shorten the lifetime of the car. It seems clear that well constructed batteries are better than this criterion by 10x! Image
Read 4 tweets
17 Oct
What distinquishes evidence based systems like science from conspiracy theories like QAnon and fakenews?

Now is a good time to explain it again because QAnon's #SaveTheChildren is hurting innocent children and helping Trump to make more victims.
fivethirtyeight.com/features/qanon…
QAnon is extreme but not so fringe anymore, now that we have Republican senators and Trump gamely embracing it.

You and I might "know" that it's a load of crap, but how can we explain the difference between QAnon and evidence based science?
washingtonpost.com/technology/202…
It's all about the scientific method and how it uses empiric evidence that can be challenged and must fit into a plausible theory that can be disproven.
The wikipedia entry is short but good (en.wikipedia.org/wiki/Scientifi…).

But even more than an elaborate method, science is a mindset.
Read 9 tweets
16 Oct
.@MLiebreich proposes to base EU policy on aggregated telemetry data instead of lab. tests. Of course! Why didn't I think of that earlier?
The problem with the lab tests is that they don't reflect reality. They are paid for by the manufacturers instead of by an independent and adversarial organization like the EPA. The manufacturers use loopholes to game the tests. (This part of the problem doesn't exist in the US.)
But even if we organised EPA style advesarial testing, it is very hard to account for actual use. E.g. of plug-in hybrids that can or cannot be a match for someone's travel pattern and can or cannot be plugged in all the time.
Read 4 tweets
14 Oct
New paper in @Nature shows how to prioritize ecosystem restoration for maximum effect: 60% less extinctions and 300 Gt CO2 stored by restoring 15% of converted lands.

nature.com/articles/d4158…

nature.com/articles/s4158…

I think fertile land is our most precious commodity.
As @hausfath points out (ht @Gio_tweets) the authors equate 300 Gt CO2 to 30% of human emitted CO2 that ended up in the atmosphere since the industrial revolution.

This is technically true, but it's only 15% of all CO2 we emitted.

What's going on here?
Well, the fact is that humans emitted 2000 Gt CO2 and only half of it ended up in the atmosphere. The rest was absorbed by the oceans (and the land).

Why is that important?
Read 7 tweets
14 Oct
The aviation industry is pretending to work on emission reduction but in fact its 'behind closed doors' lobbyist dominated ICAO organisation and the Corsia program seem only intend on cooking the books.
Also, not mentioned by prof. Helge Peukert is the idea that your flight doesn't emit CO2 because the airline planted trees. Unfortunately that is something we need to do anyway and the amount of trees you can plant and its effect is limited.
So we are left with an industry that only want to grow, knowing that this means more CO2 emissions, and is trying every trick in the book to avoid improving the situation. This needs to change!

Let's start by having them pay taxes just like everybody else. Esp. tax kerosine!
Read 5 tweets
13 Oct
Good point by @EmilDimanchev: addressing climate change seems costly only in economic model that adhere to the myth the current situation is optimal, ignoring path dependency.

Talking to him gives me hope: brilliant young man that chooses making a difference over making money.
And here the consistency right @nworbmot sheds some more light on the issue.
For me these kinds of reasonings made me want to develop better pathways in NEONresearch.nl using ABM as outlined in this article: hindawi.com/journals/compl…

(I'm looking for a post-doc that wants to be my right hand person practically managing NEON to max. output btw.)
Read 4 tweets

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