GT, your post says that 1 gallon of gasoline equals 2.7 kg (which by the way is actually 3.2 kg as shown below at the bottom of this post). So pound for pound one kg of hydrogen has the energy equivalent of 3.2 kg of gasoline. However, you are still missing the other point I made in Post #45336, that fuel cells are twice as efficient as Internal Combustion Engines (ICE), in converting that energy into power (ICE engines lose an enormous amount of energy in the form of waste heat), thus 1 Kg of hydrogen equals 2 gallons of gasoline (when used in a motor vehicle). So you could actually say, that pound for pound, 1 Kg of hydrogen equal 2x3.2 = 6.4 gallons of gasoline.
But who cares about that, it just confuses people. From a practical standpoint, if I fill a Honda Clarity with 5.5 kg of hydrogen, or my Toyota Corolla with 11 gallons of gasoline, I can travel the same 360 miles (see my previous Post #45345). Or just like Andy correctly says, 1 kg of hydrogen equals 2 gallons of gasoline.
This is very important for people to understand, because it means that 1 kg of hydrogen achieves price parity with gasoline at twice the cost per gallon of gasoline.
So for example the annual revenues from the 30 metric tons hydrogen per day plant in California, can be simply calculated as follows:
Assuming price of gasoline in California at $4/gallon, hydrogen price parity = $8/kg
Annual Revenues = 30,000 kg x 365 days/yr x $8/kg = $87.6 millions/yr 30 tons H2/day
Or in the example of the Honda Clarity vs. the Toyota Corolla in my previous Post #45345, I can travel the same 360 miles by filling the Honda Clarity hydrogen tank with $44 ($8/kg x 5.5 kg) or my Toyota Corolla gasoline tank with $44 ($4/gallon x 11 gallons).
Isn't that a lot simpler, and easier to understand.
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