Re:Stacking concrete blocks is a surprisingly efficient way ...
by eeZah7Ux on Saturday August 18, 2018 @05:20PM
(#17790788)
Compressed air has been around for centuries, but:
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While pumped hydropower storage has a charge/discharge efficiency of 70-85%, and chemical batteries reach 65-90%, the CAES plants in operation in Germany and the US have an electric-to-electric efficiency of only 40-42% and 51-54%, respectively
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""" While pumped hydropower storage has a charge/discharge efficiency of 70-85%, and chemical batteries reach 65-90%, the CAES plants in operation in Germany and the US have an electric-to-electric efficiency of only 40-42% and 51-54%, respectively """
http://www.lowtechmagazine.com/2018/05/history-and-future-of...