BLUETTI launched its latest ES125 and EP2000 series ESS in Hungary, targeting C&I and residential applications, respectively
The C&I storage solution, with a storage capacity of 257 kWh, is rated for an output of up to 125 kW AC
The company’s residential ESS is rated for up to 20 kW AC output and 51.6 kWh storage capacity
Solar-plus-storage solution provider BLUETTI showcased its latest offerings, targeting Hungary’s commercial & industrial (C&I) and residential prosumers, at RENEO 2026.
For C&I applications, the company displayed its ES125 series energy storage system (ESS). Housed in an IP67-rated enclosure, it comprises LiFePO₄ batteries, a power conversion system (PCS), a static transfer switch (STS), a battery management system (BMS), and an energy management system (EMS).
While the batteries have a cumulative capacity of 257 kWh, the intermediate AC-coupled PCS delivers (to load) or intakes (to storage) up to 125 kW AC. The ESS’s emergency backup duration during grid-side outages or failures is unknown as the company did not disclose its C-rate.
Its transition to off-grid mode is handled by the built-in STS; however, the switching time is also unknown. The system capacity can be scaled up to 2,057 kWh by connecting additional battery stacks for factories, office buildings, hospitals, or other applications that require longer backup requirements. Apart from on-grid and off-grid operations, the ESS can be configured in hybrid mode by incorporating secondary power sources, like a diesel generator (DG) and PV arrays.
On the safety side, a built-in BMS monitors battery charge & discharge and operating temperature using a closed-loop real-time feedback system. Once the BMS, in conjunction with the blended AI algorithms, detects an abnormality, the ESS’s respective safety functions will be activated. The company notes that the ESS, whose temperature is controlled by a circulating liquid coolant, has an operational temperature range of -25°C to +60°C, without derating. Nevertheless, the EMS, which primarily ensures automatic captive operations, enables C&I prosumers to increase self-consumption by aligning with the regional time-of-day (ToD) tariffs. In addition, it helps prosumers participate in Hungary’s virtual power plant (VPP) programs, creating parallel revenue streams.
The company also promoted the EP2000 series for 3-phase residential ESS at the show, addressing high utility bills through increased self-consumption. This product, equipped with a hybrid inverter, battery stacks, and EMS, is rated for 20 kW AC, sufficient for whole-home backup. The stack of batteries, each with a capacity of 7.37 kW, can offer a storage capacity range of 14.7 kWh to 51.6 kWh. Additionally, the system capacity (AC) can be scaled up to 60 kW/154.8 kWh by connecting 3 systems in parallel. On the PV side, its hybrid inverter supports up to 150% DC/AC oversizing when connected to a 30 kW PV array, maximizing self-consumption. The system, with 3 ESSs connected in parallel, can also use up to 90 kW PV array.