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Typical PEM fuel cells are no more than 45-50% efficient in real conditions. Proton-exchange membrane fuel cell - Wikipedia Don't forget looses on...

Nothing more to offer than those articles which indicate some big players are moving forward with hydrogen. There is a lot of money being spent on...

Could you provide any researches which show that hydrogen as a motor fuel going to be cheaper than electricity or biofuel when hydrogen...

The best approach for trains may be on-board hydrogen as fuel. And they already have them*. Quoting from the article emphasizes the need for...

Even more than hydrogen? Hard to believe. Also, there are such alternatives as biofuel and aluminum-air fuel cells. The later could be especially...

Cost, for lines that are not heavily used. Electrification requires a lot of infrastructure. If there is a role for hydrogen it will be for diesel...

The hierarchical structure of the universe, which started forming directly after the BB, seems rather ill-defined for such large scale formations...

But you need always to take the competing technologies into account. And compare the projected results.

Many very successful technologies required these subsidies because the private sector does not want to risk their dough on major gambles. The future...

Judging by the OP Bufofrog's not the only one that's lost a screw (or three...).

There seems to be an excess of "THE"s in that post, are they related to Starfire from Teen Titans Go?

Sadly, everything associated with hydrogen requires huge govt. subsidies and rises a question on why does it jeopardize cheaper green technologies....

There is no doubt since infrastructure makes or breaks any alternate approach to hydrocarbons, which of course are everywhere. Right now,...

Not so much for plug-in hybrids, I think. If you got an emergency and can't wait, you just run on biofuel whenever you want. And they are likely...

Not at this time. Too much development going on. Which is why I posted this thread and asked the question about hydrogen: "But Is it viable?" ...

"Remember that everything that happens on the planet is allowed by WDC." I was working on my washing machine and I lost a screw, so are you saying...

1) I don't understand why the issue with charging times is so critical. In my opinion the best solution in the near future would be a plug-in hybrid...

You have presented an interesting variety of approaches for powering systems when the PVs are not on-line. Some could certainly work out. Batteries...

Superflywheels could store energy at night? Flywheel - Wikipedia Thermal energy storage? Could be converted to electricity with help of 35%...

All good questions. The bottom line will be how it all works out in real time. Batteries are the key to EVs and other numerous E-applications. ...

Is it more efficient than produce electricity locally with help of PV on the roofs of charging stations or building roofs? Or even grow algae and...

As you know, photovoltaics (PVs) convert water directly into H2 and O2. Using this hydrogen in a car circumvents all the electrical transmissions to...

What do you think about using hydrogen as a motor fuel? I don't understand the very sense of it. If it is all about zero emissions at the global...

There is a new study* from the folks at NASA/JPL regarding water on Mars currently, and in the past. It provides new insight on the extent of...

What do you think about using hydrogen as a motor fuel? I don't understand the very sense of it. If it is all about zero emissions at the global...