SUNNY ISLAND 4.4M / 6.0H / 8.0H: The most reliable all-purpose solution – easier than ever
SUNNY ISLAND 4.4M / 6.0H / 8.0H

SUNNY ISLAND 4.4M / 6.0H / 8.0H Contact SMA

Proven technology
now even more affordable

The Sunny Island has been installed more than 70,000 times worldwide. With the new generation, installers and PV system operators benefit from an even more user-friendly battery inverter.

  • Lower system costs thanks to fewer components
  • Faster installation and commissioning with a simple user interface
  • Warranty period extended to 10 years
Proven technology now even more affordable
Kommunikativ in allen Bereichen

Communicative in all areas

Thanks to its integrated user interface and standard WLAN and Ethernet interfaces, the Sunny Island can be immediately and easily configured and monitored via smartphones or tablets.

  • Uses standard Ethernet and WLAN interfaces
  • Webconnect for faster and easier PV system monitoring with Sunny Portal / Sunny Places
  • Local monitoring via web interface
  • Optimized data logging for maximum transparency, even without continuous online access

Fast commissioning in eight steps

Can be used flexibly in private homes and commercial enterprises


The Sunny Island has maximum flexibility, from operation in remote off-grid areas to commercial or home energy management. It gives planners total freedom in the size and type of system, the battery and the type of energy generation. Works with self-consumption systems, battery backup systems and off-grid systems.

  • Ideal for retrofits or modular expansions of single- and three-phase systems in the 1 to 30 kW range
  • All lead-acid batteries and over 20 different lithium-ion batteries can be used
  • Can be expanded with SMA Multicluster-Technologie for systems in the 20 to 300 kW range

Always a reliable electricity supply

The Sunny Island runs reliably under even the most extreme conditions – without compromising its efficiency.

  • Exceptionally high overload capacity ensures a safe electricity supply, even in critical situations
  • IP54 for operation even in extreme environments
Jederzeit zuverlässige Stromversorgung

Possible system configurations with Sunny Island 4.4M / 6.0H / 8.0M


Sunny Island 4.4M / 6.0H / 8.0H FAQs


  • How can I use the Sunny Island to become less dependent on rising electricity costs?
    How do my home appliances keep running even when there is a grid failure?
    Our planning guidelines provide the answers you need.
  • What does my optimal PV system with the Sunny Island look like?
    With the SMA Sunny Design planning software, you can configure your system to fit your personal needs in just a few steps.
  • How do I install the grounding for a stand-alone grid?
    Which PV inverter is suitable for my stand-alone grid?
    Which lithium-ion batteries are compatible?
    You can find the answers to your questions in our useful manuals.

TechnologyBrochure 6 - Battery Management in Off-Grid Systems

  • Type: Technology Brochures
  • Language: English (Worldwide)
  • Number: TECHBATT-AEN114414
  • Version: 1.4

Technology Brochure 8.1 - SMA Multicluster Technology - The path to your own power grid

  • Type: Technology Brochures
  • Language: English (Worldwide)
  • Number: MULTICLUSTER-AEN112011
  • Version: 1.1

Solar Solutions for Off-grid Power Supply - Clean Energy. Anywhere.

  • Type: Brochure
  • Language: English (Worldwide)
  • Number: SHS_HYBRID-AEN121410
  • Version: 1.0

SUNNY ISLAND System Guide - System Solutions for Reliable Off-Grid Power Supply

  • Type: Brochure
  • Language: English (Worldwide)
  • Number: SISYSGUIDE-KEN140421
  • Version: 2.1

Technical Information - Average Efficiency of the SMA Flexible Storage System

  • Type: Technical information
  • Language: English (Worldwide)
  • Number: Efficiency-FSS-TI-en-10
  • Version: 1.0

Technische Information - Modbus®-Schnittstelle // Technical Information - Modbus® Interface

  • Type: Technical information
  • Language: International
  • Number: SMA_Modbus-de-en_V22
  • Version: 2.2

Parameter list for SUNNY ISLAND 4.4M / 6.0H / 8.0H (SI4.4M-12 / SI6.0H-12 / SI8.0H-12)

  • Type: Technical information
  • Language: International
  • Number: PARAMETER-HTML_SI44M-80H-12_V11
  • Version: 1.1

Technical Information - SMA Flexible Storage System - Safety Concept Explanation

  • Type: Technical information
  • Language: English (Worldwide)
  • Number: FSS-SafetyConcept-TI-en-22
  • Version: 2.2

Technical Information - Grounding in Off-Grid Systems - Design of TN and TT Off-Grid Systems

  • Type: Technical information
  • Language: English (Worldwide)
  • Number: SI-OffGrid-Grounding-TI-en-11
  • Version: 1.1

Technical Information - SMA SMART HOME - Battery Charging Management with Time-of-Use Energy Tariffs

  • Type: Technical information
  • Language: International
  • Number: SmartHome_Time-of-use-TI-en-11
  • Version: 1.1

Batteries in Sunny Island Systems - List of Approved Batteries

  • Type: Technical information
  • Language: International
  • Number: SI_LiIon-TI-en-38
  • Version: 3.8

SUNNY ISLAND - Generator - Whitepaper

  • Type: Technical Manual
  • Language: English (Worldwide)
  • Number: SIGEN-13:FE0914
  • Version: 1.3

Off-Grid Questionnaire

  • Type: Technical Manual
  • Language: English (Worldwide)
  • Number: Off-Grid-Questionnaire-en-240415
  • Version: 1.2

Off-Grid Questionnaire

  • Type: Technical Manual
  • Language: English (Worldwide)
  • Number: Off-Grid-Questionnaire-en-240415doc
  • Version: 1.2

APPLICATION FOR THE CREATION OF A PUK

  • Type: Forms
  • Language: International
  • Number: PUK-ANTRAG-en-20
  • Version: 2.0

SMA Flexible Storage System

  • Type: Quick reference guide
  • Language: International
  • Number: SI44M-80H-12-FSS-IAU-xx-10
  • Version: 1.0

SUNNY ISLAND 4.4M - Firmware update 1.02.10.R

  • Type: Firmware
  • Language: International
  • Number: SI44M-12-Firmware-Update_V1-02-10R
  • Version: 1.02.10.R

SUNNY ISLAND 6.0H / 8.0H - Firmware update 1.02.10.R

  • Type: Firmware
  • Language: International
  • Number: SI60H_80H-12_Firmware-Update_V1-02-10R
  • Version: 1.02.10.R

Operating Manual - SUNNY ISLAND 4.4M / 6.0H / 8.0H

  • Type: Operating Instructions
  • Language: English (Worldwide)
  • Number: SI44M-80H-12-BE-en-11
  • Version: 1.1
Sunny Design

With Sunny Design, you can plan your tailor-made PV system in just a few clicks.

Plan your system now

Contact SMA now

If you have any questions,
please contact SMA.

Contact us