Rankin Substation in Mount Holly, North Carolina has gotten a makeover.
Duke Energy, an American electric company, is using Fiamm’s sodium nickel chloride battery system to feed the grid on cloudy days. In fact, even during mere minutes when the clouds drift by.
Besides buying the batteries from Fiamm, Duke Energy also purchased the power electronics from S&C.
Rankin Substation currently relies on a 1.2-megawatt solar facility three miles away. Because of the intermittent nature of solar energy, the energy storage system has an expanding role to play. The system is incredibly responsive, using a closed-system algorithm to monitor changing circuit parameters every 500 milliseconds.
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