Batteries play an important role in the integration of renewable energy resources (RERs) into the power grid. One of the main drawbacks that RERs are facing is the uncertainty or the intermittency. This makes their integration into the power grid less reliable because of potential problems with frequency and voltage variance. With the inclusion of batteries, the effect of intermittency can be reduced and so are the problems of voltage and frequency variance. Batteries also have the ability to assist in load shifting (i.e. charging themselves during off-peak hours) and supporting the grid during peak hours to meet consumer demand.
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