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Electricity Storage For Intermittent Renewable Sources Jason Rugolo, Michael J. Aziz

Summary: Electricity Storage For Intermittent Renewable Sources
Jason Rugolo, Michael J. Aziz
Harvard School of Engineering and Applied Sciences, 29 Oxford St., Cambridge, MA, USA 02138
keywords: electricity storage; energy; intermittent renewable; wind; solar; photovoltaic; maxi-
mum storage power; maximum storage energy; efficiency.

Corresponding Author. maziz@harvard.edu. phone: +1 (617) 495-9884. fax: +1 (617) 495-9837.
With sufficient electricity storage capacity, any power production profile may be
mapped onto any desired supply profile. We present a framework to determine
the required storage power as a function of time for any power production pro-
file, supply profile, and targeted system efficiency, given the loss characteristics of
the storage system. We apply the framework to the electrochemical storage of in-
termittent renewable power, employing a simplifying linear response approxima-
tion that permits the entire efficiency behavior of the system to be described by a
single scalar figure of merit--the discharge power capacity. We consider three ex-
emplary grid supply scenarios: constant, grid-minus-baseload, and square wave;
and two different production scenarios: wind with a capacity factor 32.5%, and so-
lar photovoltaic (PV) with a capacity factor of 14%. For each of these six combina-
tions of scenarios, the storage energy and discharge power capacity requirements


Source: Aziz, Michael J.- School of Engineering and Applied Sciences, Harvard University


Collections: Physics; Materials Science