Hoenergy’s Standalone & Co-Located ESS Showcase At SNEC

Shanghai Hoenergy Power Technology Co., Ltd., a fairly new name in China’s energy storage space, displayed its product portfolio for both standalone and co-located applications at SNEC 2026. 

For a standalone energy storage system (ESS) application, the company promoted its D-Cube F125/418 and D-Cube S125/261 EU series products. The former consists of 416 lithium-iron-phosphate (LFP) cells (each rated at 3.2 V and 314 Ah) and electrically connected in a 1P416S configuration, with a DC bus voltage of up to 1,500 V. This battery bank can store up to 418 kWh of energy. This rated maximum storage capacity can be stored or discharged via an intermediary bidirectional inverter or power conversion system (PCS) to or from the AC grid, respectively. It has a rated conversion efficiency of at least 98.5%. A fully charged system can deliver up to 418 kWh of energy, with a corresponding AC power of 215 kW at full load for up to 2 hours at 0.5C rate. Its output AC voltage can be either 690 V or 800 V in a 3P+PE architecture (3-phase + potential earth), enabling direct connection to the 690 V or 800 V AC side of a PV plant without an additional transformer. According to the product datasheet, the overall system conversion efficiency is at least 88%. 

Compared to the above product, the latter ESS is equipped with a reduced number of 314 Ah LFP cells of 260 and a lower maximum DC bus voltage of 949 V, resulting in a storage capacity of up to 261 kWh. It can charge or deliver up to 261 kWh over up to 2 hours at full-load power (AC) of 125 kW via PCS. Unlike the former product, the ESS is designed to have a lower AC voltage of 400 V in a 3P+N+PE architecture (3-phase + neutral + potential earth). According to the company, this product was developed for the European market.   

On the safety side, both ESS feature a circulating liquid-cooled battery cooling mechanism that automatically maintains a cell-to-cell temperature delta of within 3°C. From an operational perspective, both showcases automatically interact with the grid and switch between multiple functional modes in response to real-time scenarios. These are peak shaving & valley filling (load shifting), capacity management (capacity support), dynamic expansion (capacity deferral), renewable energy consumption (renewable integration), and planned curve response (schedule tracking).  

Hoenergy also showcased its D-Cube A500/375/250 series storage platform with load-shifting capability in line with the time-of-use (ToU) tariff structure. It combines up to 4 261 kWh containerized AC ESS (each contains a 125 kW), resulting in a cumulative storage capacity of 1,044 kWh and corresponding power output (AC) of 500 kW. It supports 3-phase 4-wire loads without a transformer, noted by the company.  

Among the products displayed was a hybrid ESS, D-Cube-H125/261, supporting PV-plus-storage integration at the same location. Its integrated hybrid inverter, with up to 10 MPPT channels, supports up to 240 kW of PV capacity to maximize solar harvesting. Each channel can accommodate up to 2 strings, each rated up to 42 A. Meanwhile, the excess solar energy can be stored in the 261 kWh LFP battery bank, which has a DC output voltage up to 949 V and a rated charge/discharge rate of up to 182 A. The battery bank and hybrid inverter are both squeezed into a 1,180 × 1,800 × 2,200 mm-sized (W × D × H) cabinet. This ESS is designed for both on-grid and emergency backup scenarios. It can deliver up to 125 kW AC power output at full load in on-grid mode, while providing up to 125 kW of emergency backup for up to 2 hours once switching to off-grid mode within 10 ms of a grid outage, the company claimed. Apart from these operational functions, it supports a wide range of grid ancillary services, such as peak shaving.