Sofar ESI S1 Hybrid Inverter is a unit that, together with the Sofar BTS 5K battery pack forms a modern, safe, and highly efficient system for storing electrical energy PowerAll.

PowerAll energy bank is a comprehensive home energy storage system with an integrated hybrid inverter. The system includes a single single-phase hybrid inverter and from 1 to 6 lithium-ion batteries, allowing energy storage from 5 - 30 kWh. It is designed for households and storing electricity generated by PV installations or drawn from the power grid. By connecting up to 6 units together, a capacity of up to 180 kWh can be achieved. The PowerAll system can operate in both on-grid and off-grid modes and allows full control over power export. It also directly contributes to effectively increasing self-consumption. 

When working with PV modules, the device automatically stores excess solar energy during the day for later use during the day or at night. An additional convenience is the ability to set charging and discharging times when using the power grid, for users benefiting from time-of-use tariffs, enabling them to pre-charge the batteries when electricity prices are low and save energy when grid prices are high.

Key features of the PowerAll energy storage system:

• Modular and integrated AC-coupled energy storage
• Built-in battery management unit enhances battery capacity
• Flexible battery capacity expansion from 1 to 6 BTS 5K battery modules and up to 6 full units – from 5 - 180 kWh
• Easy operation with a single button
• Maximum battery energy with pack optimisation
• Max. photovoltaic input current: 16 A, suitable for high-current/bifacial modules
• Switching time to critical loads below 10 ms
• The battery side is fully electrically isolated, making the system safer

WARNING! This inverter only works with the dedicated battery module --> BTS 5K Battery Module

The inverter comes with 1 CT transformer. See the user manual for details.