Originally Posted by Stanton
Keep in mind that hydrogen vehicles do not burn hydrogen in a combustion engine. Rather the hydrogen is in a fuel cell and when combined with oxygen it creates electricity - which powers the vehicle.

https://www.wisegeek.com/how-does-a-fuel-cell-hydrogen-car-work.htm

There are "hydrogen generator" kits which can be built and installed in vehicles. Using the charging system to extract the hydrogen from H20, the hydrogen is then fed into the combustion stream. However, there are some laws of physics out there that say you can't get more energy out of a process than you put in so its questionable as to whether there are any gains from this process. Like anything, there are people out there who've built and use these things and swear by them, I know a few. None of them are getting a hundred miles to a gallon in a full size pickup !!!


Correct, in the case of an onboard generator, it takes more power to create the hydrogen than you could get from burning it, so it's a net loss.

Like JCC mentions above, hydrogen should be considered an energy storage solution, not a generation solution. Since we get less energy out than it took to produce, it only makes sense when the input power is either incredibly cheap and the hydrogen can displace a more costly power source later, or when the input power would otherwise be curtailed and thrown away. This effectively turns the hydrogen into a large battery that can be used later.

Australia has some pretty neat hydrogen projects in the works:

https://reneweconomy.com.au/tasmani...omic-opportunity-for-island-state-91275/
https://reneweconomy.com.au/adelaide-green-hydrogen-plant-underway-at-tonsley-54545/
https://reneweconomy.com.au/worlds-largest-green-hydrogen-pilot-commences-operation-66722/

If you ever find yourself in a fair fight, your tactics suck.