Hydrogen production challenges?
All right, let’s be frank.
Producing hydrogen will cost you. A lot.
Far more than an unsubsidised market is generally willing to pay.
That may sound harsh, but it shouldn’t be controversial. Hydrogen is not an energy source. It is an energy carrier. Before you can use it, you first have to manufacture it, and that process inevitably consumes a considerable amount of energy. There is no escaping that simple physical reality.
The good news is that production itself is not some great technological mystery.
We know perfectly well how to produce hydrogen.
We have done so for decades.
We understand the chemistry, we understand the engineering, and perhaps most importantly, we understand how to do it safely.
That last point deserves emphasis because molecular hydrogen is an extraordinarily awkward substance to work with. It ignites easily, burns with an almost invisible flame, diffuses rapidly and presents challenges that many other industrial gases simply do not.
It commands respect.
Fortunately, industry has accumulated decades of experience handling it. We know how to design plants around it. We know how to monitor it. We know how to contain it. We know how to minimise the risks.
The beast can be tamed.
At least inside industrial facilities operated by trained professionals.
That does not automatically mean I would want millions of consumers handling it in everyday applications.
Production, however, is only the beginning.
Transporting and storing hydrogen is where the real headaches start.
Compared with production, those challenges are significantly more difficult and substantially more expensive.
Hydrogen has an exceptionally low volumetric energy density, meaning that enormous volumes are required unless it is compressed to very high pressures or cooled to cryogenic temperatures. Both approaches consume additional energy, require specialised equipment and add significantly to the overall cost.
Yet even here, we are not facing an unsolved scientific riddle.
The engineering pathways are broadly understood.
High-pressure storage.
Cryogenic liquid hydrogen.
Underground caverns.
Chemical carriers.
Pipelines designed specifically for hydrogen service.
None of these concepts are science fiction. Most already exist in one form or another.
They simply cost a great deal of money.
Enough money that a genuinely competitive market would rarely choose them without substantial political encouragement.
That distinction matters.
Technical feasibility does not automatically translate into economic viability.
Far too often those two concepts are treated as though they were interchangeable.
They are not.
Could we build an extensive hydrogen economy?
Certainly.
Could we engineer solutions for production, storage and transport?
Absolutely.
Would we?
Only if someone is prepared to write very large cheques.
That is where reality usually re-enters the conversation.
Personally, I see hydrogen continuing to play an important role where it already demonstrates genuine value—in industrial processes where few practical alternatives exist.
Steelmaking.
Chemical production.
Refining.
Fertilisers.
Those are logical applications.
Trying to force hydrogen into increasingly complicated consumer applications simply because it can be done is an entirely different proposition.
An aircraft is an excellent example.
Hydrogen molecules are extraordinarily small. They leak through seals that comfortably contain other gases. They permeate materials. They encourage embrittlement in many metals, gradually weakening components over time. Designing around those characteristics is possible, but never trivial.
Now imagine placing thousands of kilometres of hydrogen plumbing inside an aircraft operating at 30,000 feet, subjected to constant vibration, pressure cycles, temperature changes and decades of fatigue.
Could engineers make it work?
Perhaps.
Engineers are remarkably inventive people.
Would I personally choose to sit inside that system?
Not if there are simpler, safer and more economically sensible alternatives available.
Sometimes the greatest engineering achievement is recognising that just because something can be built does not necessarily mean it should be.