As energy demands grow, flexibility and reliability become even more essential. Designed for commercial operations, agricultural businesses and larger residential buildings, the new Fronius Reserva Pro delivers both. This high-performance battery system offers impressive capacity, European cell and module manufacturing, and seamless integration into the Fronius ecosystem.
The Reserva Pro is a modular, DC-coupled high-voltage battery. Each tower offers 12–32 kWh of usable storage (three to eight modules), and up to four towers can be connected in parallel to scale the system up to 128 kWh, making it suitable for powering large loads, machinery or multi-unit homes. With its backup power function and black-start capability, the Fronius Reserva Pro ensures a stable supply even in the event of a power outage.
Installers benefit from a smart, tool-free plug-and-stack design that allows for quick, single-person installation. Automatic data migration makes module replacement and capacity expansion straightforward, while state-of-charge balancing keeps all modules synchronised.
Powerful charging and discharging performance
In combination with the Fronius Verto Plus hybrid inverter, the Reserva Pro provides up to 28.3 kW of charging and discharging power; with the GEN24 Plus, it achieves up to 12.4 kW. To further increase efficiency and reduce energy costs, the AI-based Energy Cost Assistant analyses and optimises energy flows across the PV system and the storage solution. By learning typical consumption patterns and automatically improving how and when energy is used, it helps users get the most out of their battery while lowering their overall energy costs.
Safety is ensured through the use of robust LFP technology, known for thermal stability, long service life and low maintenance. Internal safety devices protect against overcharging, deep discharge and imbalances, and are backed by a 10-year Fronius warranty. As part of the Fronius ecosystem, the system integrates seamlessly with Solar.start, Solar.web and Solar.SOS, enabling easy commissioning, real-time monitoring and efficient service workflows. All system data is stored on European servers, ensuring strict security and data protection standards are met.
European cell and module production
Fronius manufactures most of its products in Europe. This strong regional value chain ensures high quality and safety standards. The Reserva Pro follows the same principle: its cells and modules are produced in Europe, supporting secure supply routes and eligibility for regional programs such as Austria’s ‘Made in Europe’ bonus.
With its scalability, efficiency, European manufacturing, and strong safety features, the Fronius Reserva Pro sets a new benchmark for high-capacity energy storage, paving the way for a secure, sustainable and independent energy future.
