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2 Overview
CPS ES series energy storage systems are designed for use with commercial and large-scale on-grid/off-grid power systems.
Details of CPS ES series configurations are shown in the following configuration table (Table 2-1). The energy storage
systems can be used to provide PV energy shifting and TOU optimization, peak shaving with demand-charge management,
active and reactive power control for grid support service, zero-export control, backup power, and other system solutions to
improve energy utilization efficiency and power quality.
Table 2-1 CPS ES Series Configurations
PCS cabinet Battery cabinet
System Composition
Rated
capacity
Quantity of
cabinets
Rated
capacity
Quantity of
cabinets
CPS ES-125kW/279.55kWh 125 kW 1 set 279.55 kWh
1 set
CPS ES-250kW/559.1kWh 250 kW 1 set 279.55 kWh 2 sets
The model name of the 125kW PCS cabinet is CPS ES-125kW and the model name of the 250kW PCS cabinet is CPS ES-
250kW. The cabinet dimensions for the ES-125kW and ES-250kW models are the same.
The energy storage system consists of a bidirectional power converter PCS, a battery system, an energy management system
EMS, and other equipment, as shown in Figure 2-1 below. When the system is discharging, DC power from the lithium
batteries is converted into AC power by the PCS. All or part of the AC power is supplied to local loads, and the surplus power
is exported to the electric utility grid. During charging, AC power is converted into DC power through the PCS and the lithium
batteries are charged to store energy.
Figure 2-1 Energy Storage System Components
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