MONA Island 261 Blackout-Proof Energy Storage System

High capacity in a small space: The MONA Island 261 delivers 261 kWh of usable storage capacity in a cabinet just 115 cm wide. This makes it one of the most space-saving commercial battery storage systems in its class – ideal for businesses that want maximum energy performance without sacrificing valuable yard or storage space.

Highlights MONA Island 261:

• 261 kWh storage capacity: Enough to effectively buffer large PV systems or reliably absorb peak loads.
• Up to 125 kW output: dynamic for machinery, milking robots, charging infrastructure, and production peaks.
• Blackout protection enabled: Manual by default, autonomous optional in under 1 minute. Establishes its own island grid.
• Includes PCS / inverter: Fully integrated, no additional equipment necessary.
• Modularly scalable: Up to 20 units can be combined.
• More energy per square meter: 261 kWh on approximately 1.66 m² footprint.
• Outdoor-capable: IP55 protection class allows outdoor installation, even without roofing.

Especially for farmers, craft businesses, commercial customers, and municipalities with limited space, the MONA Island 261 is often the only storage system that can be installed at all without compromising on performance.

The MONA Island 261 relies on proven and particularly safe lithium iron phosphate cells (LiFePO₄) – the battery of choice for stationary storage with high safety requirements. This is complemented by:

• Aerosol fire protection system for maximum safety.
• Intelligent liquid cooling system for uniform cell temperatures and longer lifespan.
• Integrated BMS plus local and cloud-based EMS for full control and remote monitoring.
• Operating range from -25 to +55 °C – reliable even under harsh conditions.