Fig. 4: Energy efficiencies of batteries performing the application-based duty cycles. | Nature Energy

Fig. 4: Energy efficiencies of batteries performing the application-based duty cycles.

From: Combined economic and technological evaluation of battery energy storage for grid applications

Fig. 4

E/P = 1 duty cycles are characterized by the average depth of charges/discharges and by the number of charge/discharge events per week. The numbers below the labels show the number of charge/discharge events per week. The average energy efficiencies from the week-long duty cycles are shown for each battery chemistry. At the time of testing the Natron Energy battery, the frequency-regulation duty cycle had not been finalized and so the efficiency result is not included.

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