Take control of your energy day and night. The Fronius Reserva Pro is a high-voltage battery built for large residential buildings, commercial businesses, and agricultural operations with serious energy demands. Its efficient DC coupling keeps energy loss during transfer to a minimum, so you get the most out of every kilowatt your PV system generates.

Whether you need a single robust tower or a full-scale power reserve, the Reserva Pro scales to match your operation:

• Tailored Capacity: Choose from 12.0, 16.0, 20.0, 24.0, 28.0, or 32.0 kWh configurations, delivering 11.9–31.9 kWh of usable energy per tower, built from 3 to 8 stackable modules.
• Unrivalled Scalability: Connect up to 4 towers in parallel for a combined capacity of up to 128 kWh, with charging and discharging power reaching up to 28.3 kW when paired with the Verto Plus inverter — enough to keep large loads and high starting currents running.
• Backup Power & Black-Start Capability: In the event of an outage, critical equipment — heat pumps, cooling and ventilation systems, cold-chain and commercial machinery — can keep running, and the system can restart autonomously without grid power.
• Seamless Integration: Designed to work in harmony with the Fronius Primo GEN24 Plus, Symo GEN24 Plus, and Verto Plus hybrid inverters for automatic commissioning and hassle-free setup.
• AI-Supported Energy Management: The Fronius Energy Cost Assistant continuously analyzes PV yield, consumption, and electricity prices to optimize your storage strategy — no extra hardware required.
• Secure & Supported: Backed by a 10-year warranty (80% SOH), durable lithium iron phosphate (LFP) cells, and the local, reliable Fronius Service & Support team.