Battery Charge Efficiency

Units:	%
Mode:	Input Only
Multi-band:	False
Default Value:	70
Validation Rule:	Between 0 And 100
Key Property:	No
Description:	Efficiency of charging

Battery Charge Efficiency is the ratio of power stored in the battery to the load on the grid i.e. including any losses such as inverter losses.

Example:

Battery	Property	Value	Units
BESS	Units	1	-
BESS	Max Load	10	MW
BESS	Charge Efficiency	90	%

If the BESS operates at Max Load of 1 MW for one hour then 1 MWh is the Load on the grid and 1 × 0.9 = 0.9 MWh of Charging is stored in the battery increasing the SoC. The losses are 0.1 MWh.

Figure 1: Charge Efficiency