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Old 05-28-2018, 03:12 PM   #1876 (permalink)
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Originally Posted by sendler View Post
The fact that we are even considering electolytic Hydrogen with it's 30% round trip efficiency as a means of energy storage demonstates what we are up against when it comes to trying to maintain a baseload grid from intermittent sources. The author's contention is that batteries are so resource intensive and embody so much energy in their refining and manufacturing that their superior efficiency of 83% is swamped.
The point is that the gas platforms already have the storage capacity (the gas field) while the batteries would first have to be built. Also there's no immediate limit to how much gas could be stored; one gas well easily has more storage capacity than all the worlds batteries combined.
You don't want bulk battery storage on a rig...
Just always directly supplying the grid might be best efficiency wise, but the grid already fails to accept peak wind production levels.

Hydrogen generation would be relatively cheap to set up.
Then the poor conversion efficiency is a pity, but as a way of using excess supply it is just poor gain instead of big loss.
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