Sunny Island X SI30-20 / SI50-20

When operating in off-grid systems, the SMA Hybrid Controller communicates setpoints to the PV inverters. To increase redundancy, FSPC (Frequency Shift Power Control) is also available.

Pricing has been available since January 2025. Deliveries are anticipated to begin in April 2025.

The Sunny Island X is designed and manufactured in Germany.

The Sunny Island 4.4M / 6.0H / 8.0H has two AC terminals (AC1 and AC2). This could cause the contacts in the internal automatic transfer switching device to stick under unfavorable conditions.

The Sunny Island X only has one AC terminal and therefore does not have an internal automatic transfer switching device. Therefore, this issue is not expected to occur.

The product is listed under off-grid systems and PV systems with self-consumption.

Expansion is possible if the battery manufacturer allows adding battery modules or battery cabinets to the existing systems.

highly recommends using approved batteries, as they have been tested to ensure optimal performance with the system. If third-party batteries (e.g., older Samsung batteries) are used, smooth system operation cannot be guaranteed.

Note that the entire battery voltage range must remain within the permissible DC input voltage range of the Sunny Island. The maximum permissible DC input voltage of the Sunny Island must not be exceeded.

Yes, that is possible.

A compatibility list will be available for download on the Sunny Island X product page or in the download area at www.SMA-Solar.com.

For on-grid systems, the Sunny Island X can be operated with a single inverter without the SI X Connection Box.

For battery-backup operation, however, the SI X Connection Box is required.

For the initial setup of the first system with the Sunny Island X, recommends using the Sunny Island Connection Box from Enwitec. This aims to enhance understanding of the system architecture.

Nevertheless, it is fundamentally possible to build a switch box independently using the SMA Hybrid Controller or another compatible system controller.

Currently, only the EDMM-20 (SMA Data Manager M) supports the Sunny Tripower Storage X as a subordinate device.

With the EDMM-10 (SMA Data Manager M), the Sunny Island X is still not compatible (as of March 2025).

Yes, the information will be available shortly on the website (www.SMA-Solar.com).

Yes, the system does support third-party control signals.

will provide the Modbus protocol to allow external systems to control the Sunny Island in both on-grid and off-grid systems.

The SMA Hybrid Controller uses Modbus SunSpec-Modbus communication to send commands to PV inverters. This enables the SMA Hybrid Controller to control SMA inverters, for example, when the battery is fully charged.

indicates that it has not been tested with inverters from third-party manufacturers.

The SMA Hybrid Controller serves as a Power-Line Communication (PLC) system, facilitating a more straightforward conversion with integrated communication protocols for DNP3 and IEC 60870.

The ratio of PV inverter power to battery inverter power is 1.5:1.

In on-grid applications, up to 11 devices can be connected without requiring an additional SMA Data Manager (EDMM-20), and up to 50 devices can be connected when using the EDMM-20. In off-grid systems, up to 120 devices can be connected using the SMA Hybrid Controller.

No, it is not possible. The Sunny Island 4.4M / 6.0H / 8.0H and Sunny Island X can not be combined within a single system.

recommends using an EDMM-20 (SMA Data Manager M) to control a central energy management system.

No, for on-grid systems, the Sunny Island X can be connected in parallel (without the Sunny Island X Connection Box).

The Sunny Island X is an inverter without its own transformer. Therefore, each Sunny Island X in a system should have its own battery.

In systems with multiple Sunny Island X devices, the system remains operational if a Sunny Island X or a Battery Management System fails, and continues to function until the performance of the affected Sunny Island X or Battery Management System is adequately restored.

Yes, the Hybrid Controller regulates grid voltage by continuously transmitting setpoints to the inverters.

Currently, the energy management system of the Sunny Island X does not include a feature for arbitrage applications, but inverters can be controlled via Modbus.

Yes. You can use different Sunny Island X inverters with different battery capacities.

The Sunny Island 4.4M / 6.0H / 8.0H uses a topology where the main battery inverter (master) can control up to three subordinate battery inverters (slaves).

The Sunny Island X doesn't have this typology. Instead, the SMA Hybrid Controller can serve as the System Manager, controlling all Sunny Island X units operating together within a single system.

Off-grid systems do not have a System Manager. In on-grid systems, you can choose to set up one Sunny Island X as the System Manager for up to 11 devices in total.

Yes, it is possible to install an additional module featuring digital inputs and outputs in the Sunny Island X. This enables the implementation of additional functions.

To achieve scalability beyond 16 devices, a configuration using the System Manager can be implemented, provided that the 16 devices include inverters, meters, and irradiance sensors.

Up to 50 devices can be connected to the EDMM-20 (SMA Data Manager M), including Sunny Island X, PV inverters, energy meters, and sensors, etc.

Both the Sunny Island X and the SMA Hybrid Controller feature a web user interface.

is currently testing the overload capacity of the Sunny Island X. Once we receive the results, we will update the datasheet as necessary.

Unlike the classic Sunny Island, the Sunny Island X does not have an external button for starting or stopping the inverter.

The Sunny Island X has only a single AC terminal.

Anti-islanding is supported for on-grid applications.

The Sunny Island X features built-in AC-side protection.

The Sunny Island X does not include overvoltage protection on the DC side, as it is not necessary for battery inverters.

On the AC side, the Sunny Island X features an integrated surge protection device.

The switching time is under evaluation and is anticipated to be around 20 ms.

A measurement/setpoint interval of 100 ms is possible.

The battery's voltage and current must be compatible with the DC range of the Sunny Island X.

In addition, the battery management system's communication must comply with SMA's protocol specifications.

Yes, it has corrosion protection according to IEC 61701 (C3). recommends operating the inverters in containers or sealed rooms when they are installed near the sea.

The system supports 50 kW at 400 VAC.

Up to 10 inverters can be connected to the SI Connection Box 500.

Up to 16 generators can be connected when using compatible genset controllers with the SMA Hybrid Controller.

Yes, with the SMA Hybrid Controller, the system can manage energy effectively.

For on-grid systems, up to 11 devices can seamlessly operate within an integrated energy management system without the need for the EDMM-20 (SMA Data Manager M).

The grounding topology of the Sunny Island X is similar to that of the Sunny Island 4.4M / 6.0H / 8.0H, compatible with TT and TN grids. A TN configuration is used in stand-alone mode. The devices can be grounded; while the grounding of DC poles is prohibited.