Electrolysis and hydrogen and some other thoughts.

["VanDerWal, Peter MSgt" <vanderwp@fhu.disa.mil>]

And now for "The rest of the story..."

The nice folks at Stuart energy tell us that, theoretically, electrolyzing
water at 100% efficiency it takes 3.5 kwh to produce one cubic meter of
hydrogen.
http://www.stuartenergy.com/hydrogen/techreview.asp

And on their website they mention how much energy they ACTUALLY require for
electrolysis, compression, etc.  5.9 kwh per cubic meter.  That works out to
an efficiency of 59%.
http://www.stuartenergy.com/products/dp_models.asp

Still that's not bad if you access to cheap and plentiful electricity (maybe
off-peak?)  

I guess the point now is, how much hydrogen can you carry on an ordinary
vehicle and how far will that get you?  Will this technology give fuel cell
EVs better range than battery EVs?
Considering that with today's technology a fuel cell EV using this process
would cost you two to three times as much electricity to power it as a
battery EV, is it worth it?

Maybe have an EV where the battery pack can drop out and be replaced with a
hydrogen storage system and fuel cell.  This way you could have the better
efficiency of batteries for normal commuting and fuel cell range (and fast
recharge) for long trips.