Dr. Eric J. Fielding, PhD@Gorfram @bascule The energy storage systems help to shift the solar power production to supply electricity when it is needed to some extent, but it does not always provide power when it is required. You are right that the power supply has to have capacity to meet the peak demand, but if peak demand is in August, solar power from April is no help. Electric companies have to keep other sources that can be available at short notice for the peaks in demand.
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