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**drugstore** · 08-31-2012, 10:39 PM

Regarding the first one, I always wondered why mechanical storage wasn't considered. Something that pushed water uphill, or compresses air, etc and can release it later would surely be cheaper than a battery to produce and install and increase in capacity? Maybe even almost as efficient as a battery in terms of the energy recovered.

Has it ever been seriously considered?

08-31-2012, 10:39 PM	#4
drugstore Join Date Oct 2005 Posts 437 Senior Member	Regarding the first one, I always wondered why mechanical storage wasn't considered. Something that pushed water uphill, or compresses air, etc and can release it later would surely be cheaper than a battery to produce and install and increase in capacity? Maybe even almost as efficient as a battery in terms of the energy recovered. Has it ever been seriously considered?
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