The Chinese company says its new ESA series is available with a hybrid inverter ranging from 3 kW to 10 kW and storage capacities from 5 kWh to 48 kWh. The IP66-rated product supports MPPT current up to 20 A on the PV side and enables 200% PV oversizing, according to the manufacturer.
Chinese inverter and energy storage manufacturer GoodWe has launched a new generation of its ESA series residential all-in-one energy storage solution.
The single-phase system is available with a hybrid inverter from 3 kW to 10 kW and stacked battery modules, with a storage capacity from 5 kWh to 48 kWh.
“By supporting a maximum MPPT current of 20 A on the PV side, larger capacity modules can be used with the system, and the 200% PV oversizing allows for more generation during off-peak hours and cloudy days,” the company said in a statement. “The low start-up voltage of 50 V enables longer operating time, further extending effective operating time. The inverter unit also enables full utilization when demand and solar output peak, providing 100% supply to power the loads while simultaneously charging the battery at full speed.”
The series offers six inverter options, with maximum input power on the PV side of 6 kW, 7.2 kW, 10 kW, 12 kW, 16 kW and 20 kW. The corresponding outputs on the AC side are 3 kW, 3.6 kW, 5 kW, 6 kW, 8 kW and 10 kW respectively.
The four lower capacity inverters are equipped with two MPPTs, while the two higher capacity models are equipped with four. The maximum efficiency is 97.6% for the smaller inverters and 97.5% for the larger ones. All modules are 80 cm x 30 cm x 27 cm and weigh between 24 and 26 kg. Installation options include both floor and wall mounting.
Each inverter can be connected to one to six lithium iron phosphate batteries (LiFePO4), available with a nominal capacity of 5.12 kWh or 8.32 kWh per module. Six of the smaller batteries provide a total capacity of 30.72 kWh, while six larger units provide 49.92 kWh. With support for up to six inverters and 288 kWh of storage, the system can be scaled to meet larger applications.
Both the inverters and batteries are IP66 rated, allowing indoor or outdoor installation. Optional heating elements in the batteries allow operation at temperatures down to –18 °C. Each battery measures 80cm x 32.6cm x 27cm and weighs 57.5kg (smaller module) or 79kg (larger module).
“The battery modules have a 1C charge/discharge rate for faster power cycles. In practice, this means the system can achieve the same output power with fewer batteries compared to the modules that offer a lower C rate. This makes it suitable for high instantaneous power scenarios such as load peak shaving and frequency control. Other operating modes include optimized self-use, backup operation, optimized runtime, smart charging and off-grid mode,” GoodWe further explained.
“The integrated backup function turns on in less than 4 milliseconds in the event of a power outage, which is fast enough to keep devices such as computers, lights or Wi-Fi routers running without interruption,” the report said.
This content is copyrighted and may not be reused. If you would like to collaborate with us and reuse some of our content, please contact: editors@pv-magazine.com.
