Stockage de batteries intérieur PRAMAC BSI 50

Pramac BSI 50 battery storage system – modular energy for industry, commerce and agriculture

The Pramac BSI 50 is a high-performance, modular battery storage system for professional applications in industry, commerce, and public institutions. With capacities ranging from 109 kWh to 436 kWh, it offers a flexible and scalable solution for reliable, emission-free power supply – ideal for off-grid applications, peak shaving, or as a complement to renewable energy sources.

Performance that grows with you – four capacity levels

The BSI 50 series with a power output of 50 kVA is available in four versions:

• BSI 50-109 : 109 kWh storage capacity
• BSI 50-218 : 218 kWh storage capacity
• BSI 50-327 : 327 kWh storage capacity
• BSI 50-436 : 436 kWh storage capacity

The modular design allows multiple units to be combined – for particularly high energy demands in industrial applications or large PV systems.

Intelligent control with the PBI battery inverter

The heart of the system is the Pramac PBI (Power Battery Inverter) . This ensures efficient conversion and distribution of the stored energy – with high power density, dynamic load adjustment, and high efficiency. The PBI enables grid-connected operation as well as off-grid operation, is compatible with generators and solar systems, and supports intelligent load management via integrated EMS functions.

Typical areas of application

• Commercial : Increasing self-consumption with PV systems
• Buffer storage for EV fast charging: Increased usable power
• Industry : Peak shaving and emergency power supply for energy-intensive processes
• Agricultural buildings: Use of PV electricity after the end of subsidies

Technical advantages at a glance

• LFP battery technology for long lifespan and high safety
• Low-maintenance solution , scalable for indoor use
• Integrated communication interfaces (e.g., Modbus, CAN) for remote monitoring
• PBI Inverters : Perfectly matched battery inverter & energy management system (EMS) developed in-house
• Future-proof: Modular battery and combiner racks for easy capacity and power expansion
• EMS: Comprehensive EMS with peak shaving, self-consumption optimization, time-of-use and much more, integrated into the system from the factory.

With the Pramac BSI 50, professionals get a future-proof, emission-free energy source that can be individually adapted to energy requirements – from medium to large applications. Ideal for CO₂ reduction, lower operating costs, and a sustainable energy future.