SUNNY ISLAND 6.0H/ 8.0H: Future-Ready and Self-Sufficient

The Sunny Island 6.0H/8.0H is the SMA solution for increased self-consumption and reliable backup power. This battery inverter is the future-oriented solution for people who want to be actively involved in shaping their own energy supply – regardless of whether their system is a new installation or already in place. Even existing systems can be retrofitted for operators who want to benefit from intermediate storage of solar power at a later time. As the core element of the SMA Flexible Storage System, the Sunny Island 6.0H/8.0H stores power for maximum self-consumption.

The new firmware 3.1 will be available as of week 26. Thus, the Sunny Island will meet FNN requirements for asymmetric loads (“Connection and Operation of Storage Systems on the Low-Voltage Grid”). Please note that the Firmware 3.1 must be installed during commissioning after July 1.


The new battery backup function

The automatic battery backup function introduced in January 2014 with Firmware Release 3.0 lays the foundation for maximum supply security. In the event of a power outage, it ensures nearly continuous power supply to all consumers, with an interruption of only five seconds. Even customers who have already installed a Sunny Island self-consumption system can use the new battery backup function, thanks to the possibility of retrofitting this new feature. The necessary firmware will be available for download.

After more than 10 years of practical experience with battery backup systems, SMA offers PV system operators the security of worry-free service. The Industrial Trade Association inspection certificate testifies to the system’s reliability, giving the installer maximum assurance that all current installation and safety standards have been met.


Three-phase inverter offers even more independence

With Release 3.0, self-consumption and battery backup systems with Sunny Island can also be expanded into three phases. This makes the SI6.0H/SI8.0H suitable for a wide range of applications, including commercial. The extremely high-capacity backup system offers lasting protection against grid failures – a particular advantage for relatively small commercial entities, such as workshops or office buildings.

Self-consumption and power backup systems based on the Sunny Island 6.0H/8.0H offer high flexibility for system design, with useful configurations for all PV systems from 3 to 30 kWp.


Advantages for operators and installers

What is my projected self-consumption level – and therefore my independence from conventional energy carriers? An important question for the PV system operator. The SMA Sunny Design software provides the answer, even during the consultation phase. The application calculates the self-consumption and self-sufficiency rates with precision, yielding reliable predictions of potential savings and cost reductions. With the online version of Sunny Design, determining these parameters is now even easier and more user-friendly.
Installers have two options for assembling the battery backup function: They can do it themselves, consulting the installation guide for details, or they can order the distribution board as a fully wired system.


Reducing costs and increasing self-consumption and battery service life

Longer battery service life and therefore lower system costs are the clear advantages for PV system operators using the new seasonal battery operation, which can be activated with Release 3.0. The possibility of automatically reducing optimal self-consumption in winter keeps the battery charged at a high level during this season when irradiation is weaker. During long winter nights, most of the battery charge can be used as backup power, providing additional security for the system operator. The scenario in summer is exactly the opposite, self-consumption rises, and with it the self-sufficiency rate. In summer, when nights are shorter, only a small portion of the battery must be reserved for backup power.

Release 3.0 features other remarkable improvements in efficiency. For example, when the minimum state of charge is reached, functions that are no longer needed are turned off until the next opportunity to recharge with solar energy.

Maximaler Eigenverbrauch. Für Heute und Morgen.

Maximum Self-consumption

For Today and Tomorrow

With Sunny Island systems, solar energy is always available when it's needed – even after sunset and when the sun is hiding behind clouds. Using its integrated energy management system, the Sunny Island automatically charges and discharges the connected battery. The PV inverter does not feed electricity into the utility grid until the battery is fully charged and the electricity needs of all electric devices in the household have been met.

Although the Sunny Island is only connected to one line conductor, it automatically manages the total power. The energy meters work in a cumulative manner, so that the power from the individual line conductors is added up. The Sunny Island can then always feed in or draw as much energy as is needed in accordance with the sum total of all phases.

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External measurements confirm the system's extremely high efficiency, with a rate of 95.8 percent – and well over 90 percent even at a charging/discharging capacity of just 300 W. SMA is the only manufacturer in this field that currently allows fully external measurements of efficiency curves and also makes the results public. The overall efficiency curve of AC systems based on the Sunny Island is significantly higher than that of most DC-coupled systems.

AC output (loads / stand-alone grid)
Rated grid voltage / AC voltage range 230 V / 202 V ... 253 V 230 V / 202 V ... 253 V
Rated frequency / frequency range (adjustable) 50 Hz / 45 Hz ... 65 Hz 50 Hz / 45 Hz ... 65 Hz
Rated power (for Unom / fnom / 25°C / cos ϕ = 1) 4600 W 6 000 W
AC power at 25°C for 30 min / 5 min / 3 sec 6 000 W / 6 800 W / 11 000 W 8 000 W / 9 100 W / 11 000 W
AC power at 45°C 3700 W 5430 W
Rated current / maximum output current (peak) 20 A / 120 A 26 A / 120 A
Total harmonic factor output voltage / power factor with rated power < 4 % / -1 ... +1 < 4 % / -1 ... +1
AC input (PV array, grid or MC-Box)
Rated input voltage / AC input voltage range 230 V / 172.5 V ... 264.5 V 230 V / 172.5 V ... 264.5 V
Rated input frequency / allowable input frequency range 50 Hz / 40 Hz ... 70 Hz 50 Hz / 40 Hz ... 70 Hz
Maximum AC input current 50 A 50 A
Maximum AC input power 11 500 W 11 500 W
Battery DC input
Rated input voltage / DC voltage range 48 V / 41 V ... 63 V 48 V / 41 V ... 63 V
Maximum battery charging current 110 A 140 A
Rated DC charging current / DC discharging current 90 A / 103 A 115 A / 136 A
Battery type / battery capacity (range) FLA, VRLA / 100 Ah ... 10 000 Ah FLA, VRLA / 100 Ah ... 10 000 Ah
Charge control IUoU charge procedure with automatic full charge and equalization charge. IUoU charge procedure with automatic full charge and equalization charge
Efficiency / self-consumption
Maximum efficiency 95 % 95 %
Self-consumption without load / standby < 26 W / < 4 W < 26 W / < 4 W
Protective devices (equipment)
AC short-circuit / AC overload ● / ● ● / ●
DC reverse polarity protection / DC fuse – / – – / –
Overtemperature / battery deep discharge ● / ● ● / ●
Overvoltage category as per IEC 60664-1 III III
General data
Dimensions (width x height x depth) 467 mm x 612 mm x 242 mm 467 mm x 612 mm x 242 mm
Priority 63 kg 63 kg
Operating temperature range -25°C ... +60°C -25°C ... +60°C
Protection class (according to IEC 62103) I I
Climatic category according to IEC 60721 3K6 3K6
Degree of protection according to IEC 60529 IP54 IP54
Features / function
Operation and display / multifunction relay External via SRC-20 / 2 External via SRC-20 / 2
Three-phase systems / parallel connection ● / ● ● / ●
Integrated bypass / multicluster operation – / ● – / ●
State of charge calculation / full charge / equalization charge ● / ● / ● ● / ● / ●
Integrated soft start / generator support ● / ● ● / ●
Battery temperature sensor / data cables ● / ● ● / ●
Certificates and approvals
Warranty: 5 years
Battery cable / battery fuse ○ / ○ ○ / ○
Interface SI-COMSMA (RS485) / SI-SYSCAN (Multicluster) ○ / ○ ○ / ○
Extended generator start “GenMan”
Load-shedding contactor / battery current measurement ○ / ○ ○ / ○
Type designation SI 6.0H-10 SI 8.0H-10
● Standard features
○ Optional features
— Not available
Data at nominal conditions – provisional data, as of March 2013

Sunny Remote Control

The SRC 20 external control unit enables quick and easy commissioning of Sunny Island 6.0H / 8.0H. A rotating push button and illuminated alert button make operation intuitive; the four-line display shows the status of the plant. Data is archived on an SD card.

Speedwire Data Module for Sunny Island

For smooth communication, the SWDMSI-10 data module in the Sunny Island enables communication with the Sunny Home Manager. As a result, the Sunny Home Manager can transmit the energy meter data to the Sunny Island and thus facilitated an ideal rate of self-consumption.

Battery cable sets

Cables for the DC connection between the battery, BatFuse and Sunny Island - or the direct connection between the battery and inverter. The double insulation enables ground-fault-proof and short-circuit-proof installation. Approved for cable temperatures up to 90°C.

- 14522 mm² for Sunny Island 6.0H / 8.0H in 3 and 6 meters long

Battery fuse boxes

Battery fuse boxes (BatFuse B.01 and B.03)

External DC distributor for all-pole battery fuse protection. Both types are suitable for currents from 63 to 250 A and feature an NH fuse-switch disconnector for simple activation of the Sunny Island. BatFuse B.01 provides one connection for Sunny Island and three DC connections on the battery side. BatFuse B.03 features three connections for Sunny Island and six DC connections on the battery side. Both types also have an 8A auxilliary supply output from the battery.

Compatible with all Sunny Island models.


Planning Guidelines for Sunny Island / Sunny Home Manager

For more detailed information on SMA energy management solutions or the SMA Smart Home concept see the respective SMA Smart Home and Battery Backup Function planning guidelines.