Quote:
Originally Posted by solarguy
If you look at where the hydrogen -must- come from, it quickly becomes apparent that the so-called hydrogen economy will never take off.
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Agreed. The cheapest way to make hydrogen is from natural gas and that gives you a negative net accomplishment.
Quote:
Originally Posted by solarguy
If we eventually build enough wind and solar pv to make almost free electricity/hydrogen from electrolysis, it would still be more efficient to use batteries to store and use the electricity, rather than hydrogen.
It is just enormously difficult to store hydrogen at even decent energy densities.
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Yes best thing to do with expanded wind and solar capacity that comes on line is just to use it as grid power. Replace the coal and natural gas being used to generate power.
Save the coal for making steel and concrete and the natural gas for heating and motor fuel.
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