Austria’s Accupower launches residential sodium-ion battery
Austrian company Accupower, headquartered in Graz, has developed Natec Home, a storage system based on sodium-ion technology, designed for integration in residential photovoltaic installations, electrical backup applications, and small- and medium-scale configurations in industrial environments. According to the company, it is the first domestic storage system using this technology to be developed and designed entirely in Austria.
The Natec Home has a nominal capacity of 7.68 kWh and a power output of 3.8 kW. The system allows parallel connection of up to 15 units, enabling higher-capacity configurations for both collective self-consumption and business applications requiring energy backup. The price is set at €3,990 ($4,625), roughly comparable to conventional lithium-ion-based home systems.
The manufacturer highlights the system’s high thermal stability and its performance across wide temperature ranges. The unit can operate between -30 C and 50 C without significant degradation. At sub-zero temperatures it retains approximately 90% of its nominal performance, compared to steeper drops seen in conventional technologies, allowing outdoor installation potentially without heating or climate control requirements in many environments. It had an IP65 rating for water and dust ingress protection.
The estimated service life for residential applications is between 20 and 25 years via 8,000 charging cycles with a minimum residual capacity of 80% at the end of that period. This durability is attributed both to the sodium-ion chemistry and to the Battery Management System (BMS), developed by the company for continuous monitoring of critical parameters such as state of charge, overcharge and over-discharge protection, thermal control, and data management. Accupower reached industrial maturity of its sodium-ion batteries for industrial applications in 2025, experience it has now carried over to the residential segment.
The system measures 80 cm x 22.7 cm x 50 cm, with a larger footprint than some equivalent lithium-ion systems. However, the company notes that the design prioritises operational safety, thermal stability, and service life over compactness.
As a complementary product, the company has introduced Natec X-Plore, a sodium-ion battery aimed at small-scale mobile applications such as light vehicles, boats, and caravans. A photo of the X-Plore, no longer available at an Austrian online battery webstore, showed a typical “lead-acid style car battery” appearance, though this is unconfirmed.
In addition, for mid-2026 the launch of industrial container-format solutions is planned, called Natec Store and Natec Store C20, which will provide electricity supply in off-grid locations. The company began series production of its batteries in April 2025.