Sigenergy’s ESS Unifies Heat Pump & EV Charger

Solar-plus-storage system maker Sigenergy Technology unveiled its ‘All-In-One' residential ESS, SigenStore Neo, at Intersolar Europe 2026. It also displayed its new air-to-water heat pump and AC electric vehicle (EV) charger, which are compatible with the showcased home ESS, and also showcased a plug-in home micro storage system.  

The home ESS integrates storage, a hybrid inverter, PCS, EMS, and 3 built-in ports or gateways. Its inverter is equipped with 4 MPPT channels, each rated for up to 40 A DC. The storage unit can vertically stack up to 6 battery packs of either 6 kWh or 7.5 kWh at 15 kW 3-phase power output (AC). Thus, users can choose between 2 system configurations: 15 kW/36 kWh or 15 kW/45 kWh. Unlike the conventional ESS, which requires dedicated gateways to communicate between 3rd-party or external devices, it features dedicated smart, backup, and AC grid ports. This eliminates the need for additional gateways. Here, the smart port is used to connect 3rd-party inverters, an external diesel generator (DG), and smart home appliances such as heat pumps or EV chargers. At the same time, the backup port provides a flexible, extended emergency power supply to whole-home loads during a grid blackout. It switches to backup mode and delivers up to 15 kW emergency backup almost immediately (0 ms) after a grid outage. Also, the ESS is designed to support an overload of up to 200% of the rated full-load capacity of 15 kW for up to 10 seconds, maintaining uninterrupted operation of high-inductive household loads. According to the company, this system can provide extended backup, especially during periods of low solar availability, via an external DG set.  

The SigenStore Neo can also be integrated with the company’s microinverters, SigenMicro, to handle complex roof layouts with different module orientations.  

Also on the display were the company’s latest heat pump, SigenFlux, and AC EV charger, Sigen EVAC G2. This is an air-to-water heat pump that extracts heat from the outside air and transfers it to water for residential use. The company says this home appliance can be integrated with the showcased home ESS via the smart port, enabling automatic synergy among solar, storage, and heat. Unlike a standalone home climate-control appliance, the pump automatically syncs its real-time demands with PV and storage capacities, enhancing energy efficiency. Similarly, when the bidirectional EV charger is coupled with the ESS, the former can be charged via solar or the AC grid. The Sigen AI is blended into the energy management app, mySigen App, which is installed on users’ devices. It dynamically optimizes the charging schedule based on solar generation, battery status, electricity tariffs, and captive load once it receives macro inputs from EV users via the AI agent, SigenAgent. 

On the microstorage side, the company showcased its plug-in balcony storage system, SigenMate, paired with the SigenMicro inverter.