German startup launches high-voltage sodium-ion battery for residential applications

<p>German startup Revolta has launched a high-voltage battery storage system for residential applications based on sodium-ion technology. Each battery module has a capacity of 2.0 kWh, and up to 10 modules can be connected in parallel, enabling the system to reach a total capacity of 20 kWh.</p>

<p>The sodium-ion storage unit has a compact design, measuring 284 mm × 186 mm × 260 mm and weighing 19 kg. The module configuration can be freely adapted to scale the system according to individual requirements. A control unit provides the interface between the battery and the inverter. Revolta said it will continue expanding its list of compatible inverter models as manufacturers grant the required approvals.</p>

<p>According to the company’s datasheet, the system has an energy density of 105 Wh/kg and a nominal voltage of 450 V DC. Charge and discharge power varies between 0.6 kW and 1.2 kW depending on the state of charge, Revolta said. The storage system achieves an efficiency of more than 95%. It has an IP65 protection rating and holds several certifications. Noise emissions are specified at below 40 dB, while standby losses are described as very low. </p>

<p>Revolta claims the battery can remain in standby for more than one year without requiring a recharge.</p>

<p>The sodium-ion storage system is designed for simplified installation. Commissioning is carried out through a “plug-and-play over-the-air” process, which can be completed via the company’s smartphone app or Bluetooth connection, Revolta said.</p>

<p>Revolta presented its sodium-ion residential storage system at this year’s <em>The smarter E </em>trade fair in Munich. The official market launch is scheduled for September, a company spokesperson told <strong>pv magazine</strong>. Several pilot projects are already planned.</p>

<p>The company said it is receiving daily inquiries from end customers, who are generally directed to suitable local installers. “We are targeting the traditional three-tier distribution model, moving from wholesalers to installers, and are already in initial discussions with distributors,” the spokesperson said. Revolta expects its sales network to be fully established by 2027.</p>

<p>The company plans to initially focus on the German market, while also preparing for expansion into other European countries. As the high-voltage storage system connects directly to the inverter rather than the grid, there are no major technical obstacles to entering additional markets, according to the spokesperson.</p>
<p>The post <a href="https://www.pv-magazine.com/2026/07/24/german-startup-launches-high-voltage-sodium-ion-battery-for-residential-applications/">German startup launches high-voltage sodium-ion battery for residential applications</a> appeared first on <a href="https://www.pv-magazine.com">pv magazine Global</a>.</p>