It is storing hydrogen in metal hydrides which is very safe.

You should actually try to read the article.

These use green hydrogen.

Those are outright lies. For one thing, you can use fuel cells instead of gas turbines, getting rid of NOx emissions entirely (not to mention you can filter out NOx even with gas turbines).

Sorry, but this conversation cannot continue if you proceed with dishonest arguments.

If you adopt hydrogen for energy storage, you no longer have to worry about “where.” You have a solution that is nearly geographically independent.

The more renewable energy you have, the more you need long-duration energy storage. You cannot reach 100% renewable energy without huge amounts of it.

For a few hours, yes, but that will make up a small percentage of total energy stored. To really solve the intermittency problem, you will need large scale energy storage.

just use excess electricity to make hydrogen. This actually solves the intermittency problem, among many other things that will require hydrogen in order to reach zero emissions.

That is a different conversation altogether.

Apparently not. Since hydrogen is lighter-than-air, it will simply float away during a leak.

That’s your opinion.

I hope people here are realizing that our current strategies are not working. They are mostly just “feel-good” solutions like paper straws, and will not eliminate the need for fossil fuels. Which is why I keep pushing for green hydrogen, because I already knew this and want real solutions to be pursued.

It’s up to the patent office to reject it then.

Devil’s in the detail I suppose. We don’t know if anything like this exists for a turbodan engine.

Green hydrogen is made from water using electrolysis.

Space rockets were only invented in the late 1950s.

It can be made from 100% green energy. So it is distraction to worry about it. Electricity is the same way.

The first point to make is that hydrogen is not decades off. Green hydrogen is happening now, and its production is rapidly expanding alongside the expansion of renewable energy production. Many sectors can rapidly adopt green hydrogen right away. This is similar to the conversation we we had about solar power about a decade ago. Critics of solar power back then were being Luddites (and sometimes secret fossil fuel industry stooges). They were convinced that solar could not be cost-effective or scale, based off of very outdated understandings of the issue, but they were wrong. This conversation is repeating with green hydrogen.

On a related note, pro-electrification crusaders are being hypocrites on this subject. They themselves are demanding that we wait decades for miracle batteries or multi-decadal long electrification programs. Because they want “perfect” solutions rather than “good” solutions. A good example is how they demand we fully electrify all rail, a process that will take decades, rather than doing something faster like switching diesel trains to hydrogen trains. In reality, adopting hydrogen now, alongside more reasonable forms of electrification, will be a faster path for reducing CO2 emissions.

Also note that most “fearmongering” types of argument against hydrogen originated from the fossil fuel industry. They are always spreading propaganda intended to undermine green energy projects, and make similar claims about all green technologies. Claims that hydrogen is dangerous, or a GHG, or will leak, etc., are all fear tactics created with minimal amounts of evidence. In reality, hydrogen has very few problems, and adopting it will drastically make transportation and industry safer and more green. It is unfortunate that many environmentalists have fallen for this tactic, but I suppose every green idea had to overcome it.

Finally, you can buy hydrogen and hydrogen-related products. Sure, we are still a bit early on the adoption curve, but that is true of every new idea. Someone can buy a hydrogen car, or a furnace, or whatever right now. Many more are also capable, but don’t know it yet. So rather than demonizing something for not being able to basically time travel, environmentalists should promote green ideas in order to accelerate their adoption.

Believe it or not, sails! Obviously you’re not going to get a 100% reduction because modern shipping companies wouldn’t tolerate being becalmed (and I’m not falling for that article’s “up to 90%” claim either, BTW – I only picked that one to link because it has a decent overview of multiple different technologies), but it can still make a big dent in the fuel requirements.

No. Absolutely not. Sorry, but I cannot this claim seriously at all. We are not going to switch to sail ships again. I don’t think you grasp just how big modern shipping actually is, and how impossible such an idea really is.

I doubt you have any grasp of how massive the problem really is, and how tiny your proposed solutions are in comparison. For instance, you keep citing the possibility of using waste cooking oil for biofuels. Well, the world only makes 3.7 billion gallons of that per year: https://oilandenergyonline.com/articles/all/supply-and-demand-report-used-cooking-oil/

Converted to barrels of oil equivalence, that’s around 100 million barrels. The problem? That’s literally one day’s worth of petroleum consumption: https://en.wikipedia.org/wiki/List_of_countries_by_oil_consumption

So you are about 0.3% of the way of solving the problem with that idea. Even if we could radically reduce petroleum use in the way you are imagining, that’s still going to be a negligible impact. And the world’s GDP is still growing. There’s still multiple billions of people that will want to live like the first world. So demand for energy will skyrocket in the coming decades, not decrease. The problem will only get exponentially larger and harder to solve.

Ultimately, this is eco-Ludditism, and is more about wishing away the problem than actually solving it. Worse, you enabling the worse stereotypes about environmentalists. Namely that they are crazy wackos who aren’t willing to engage with reality. Any solution must take seriously the idea that there >8 billion people on Earth now, and they all want to live in convenience.

(Speaking of which, once you reduce the demand for vehicle fuel that much, stuff like biodiesel made from waste veggie oil starts to look plentiful enough to make a decent dent in the market. That, at least, has been a solved problem for decades, and I’ve got the ‘90s VW and B100 fuel receipts to prove it.)

Not even close. Even if all cars were eliminated, there will still be enormous commercial need for fuels, such as commercial trucking, shipping, aviation, mining, construction, etc. Not to mention that growing crops for biodiesel require massive energy inputs in the form of fertilizers, pesticides, farm equipment, etc. And of course, the farmland needed will displace food production, which is its own major problem.

Which is why biofuels can never really be taken seriously as part of a green economy.

Thanks for the interesting discussion!

Sure, same here.