Can somebody check my math?

Question

It takes approx 50 kilowatts of electricity to produce 1 kg hydrogen by electrolysis.

1 kg hyrogen equals 1 gallon of gas when burned in a internal combustion engine.

hydro costs 6-7 cents per kilowatt.

So 1 kg hydrogen costs $3 - $3.5 to produce, but because the ignition timing in a hydrogen powered i.c.e. is very close to top dead center you should get more miles per gallon.

Thanks in advance for the help.

Answer 1

Your math is correct, but don't forget to add the state fuel tax anywhere from 8 to 31.9 cpg plus sale tax in some states plus 18.4 cpg fed fuel tax to the hydrogen. Yes you have to pay it even if you make the fuel yourself.

Oh don't forget transportation costs, storage costs, etc.

Answer 2

Would hydrogen be measured in kg?  If so, math is okay. The link below states that in 2006 the average price per kilowatt was $0.0147 ... that is end user, so I would say your 6-7 cents is still very high.  At 0.02 you are looking at a buck a galllon + distribution + overhead + employees.

Answer 3

that makes no sense!

Answer 4

Your math is correct - It's the equivalencies that may be troublesome.  Does it actually take 50 kw electricity for 1 kg hydrogen?  Is one kg hydrogen = to one G. gas?  Can you really get electricity for 6 to 7 cents/kw?   Is hydrogen really more efficient than gasoline?  Mike, where is electricity 1.4 cents per kilowatt?  That is 14.7 cents per kilowatt.