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Coming soon.
SMA Home Storage HS-BMS-20 / HS-BM-4.71-20 / HS-BU-20
A Powerful Storage Solution
Offer homeowners flexibility with the modular SMA Home Storage battery, that pairs perfectly with the Sunny Boy Smart Energy hybrid inverter. This expandable system unlocks the full potential of sustainable energy, providing powerful, future-ready solutions.
Reliable Solar Power – Day and Night
SMA Home Storage ensures energy stability by providing backup power during outages and sustainably powering homes in the evening when the PV system isn’t producing energy. Designed for long-term performance, it offers flexible scalability to meet individual homeowner needs and boasts a lifetime cycle exceeding industry standards.
With a 12.5-year1 warranty, invest with confidence, knowing you’re choosing proven SMA quality and long-term security. Plus, by selecting SMA Home Storage, eliminate the hassle of dealing with multiple manufacturers—ensuring seamless troubleshooting, service and support under one trusted brand.
Built to Last, Indoors or Out
Engineered to withstand extreme weather conditions, SMA Home Storage is designed for both indoor and outdoor installation, offering maximum flexibility.
Upgrade to a smarter, all-in-one energy solution with SMA Home Storage and the Sunny Boy Smart Energy hybrid inverter—the perfect residential solution.
Stay up to date
To get the most recent updates, product information and special event invitations please complete the form below.
Register nowMore benefits
Unmatched flexibility
Slim, stackable design, expandable from 9.4 kWh to 18.9 kWh of usable capacity
Parallel connection supports up to 4 battery stacks, offering a total usable capacity of up to 75.44 kWh*
Maximum charge and discharge power up to 18.09 kW
IP65- rated for durable indoor or outdoor use
Easy installation, fast commissioning
Plug-and-play solution and quick commissioning through the SMA 360° App
Proprietary mounting simplifies servicing without the need to remove modules
Flexible mounting options: wall-mounted or floor installation
Expandable capacity available2
Future-proof electricity storage system
Developed for intensive use
Ready for future, adaptability to evolving grid policies
Scalable and modularly expandable as energy needs grow
Up to 8,000 life cycles and 12.5 years of warranty1
Seamless integrability and compatibility
Compatible with the Sunny Boy Smart Energy hybrid inverter
*Planned
SMA hybrid inverters
In combination with the Sunny Boy Smart Energy, SMA Home Storage offers unmatched flexibility, maximum solar energy, easy setup and adaptable energy management.
Find out more about hybrid inverters
1 Device registration via the SMA product registration at my.sma-service.com required within 30 days. The conditions of the SMA limited factory warranty apply. You can find additional information at SMA-solar.com.
2 Available within the first 12 months after commissioning without limitations
SMA Home Storage
FAQ
General Information
Are there any special training courses for the SMA Home Storage?
The SMA Solar Academy offers a number of webinars and training courses for the SMA Home Energy Solutions at: Courses - seminars and webinars | SMA Solar Academy
Our trainers will be happy to answer all of your technical and general questions about SMA Home Storage.
When will the SMA Home Storage be available?
SMA Home Storage will be available mid 2025.
Does the SMA Home Storage offer security in the event of a blackout?
With the SMA Home Storage, system operators are best prepared for a blackout. Due to the high current and high voltage of the system, the maximum power should be sufficient for all common appliances in the house. You can find the individual backup options on the product page of the inverter.
Where can I buy SMA Home Storage?
After SMA Home Storage is available in mid 2025, you can reach out to an SMA Authorized Distributor to purchase.
How long is the warranty period for the SMA Home Storage?
The SMA factory warranty period for SMA Home Storage is 12.5 years.
What certifications does the SMA Home Storage have?
The SMA Home Storage was specially designed for use in the America’s and certified in accordance with various American standards:
UL9540 AC ESS
UL 9540A
IEC 60529
IEC 62262
IEEE693
The certification will soon be available in the download area of the SMA Home Storage product page.
Can additional battery modules be integrated into an existing PV system?
Yes, it is possible to add more capacity to the installed system within one year of initial installation. You can adapt the system to your individual needs for the best optimization.
Is it possible to have the current state of charge (SOC) of the SMA Home Storage indicated by the LEDs?
The current state of charge (SOC) can be monitored and viewed via energy monitoring on the Sunny Portal or using the SMA energy app.
Does the SMA Home Storage have a black start function?
Yes, the SMA Home Storage is equipped with a black start function. This function can be activated manually at the product. Furthermore, the hybrid inverters in the system are automatically switched on at sunrise.
Does the SMA Home Storage provide retrofitting options?
The SMA Home Storage modules are only compatible with the current SMA hybrid inverters, specifically with the Sunny Boy Smart Energy.
Can I use the SMA Home Storage without a PV system?
No, the SMA Home Storage can only be used with SMA hybrid inverters.
Is SMA Smart Connected available with the SMA Home Storage?
Yes, SMA Smart Connected is offered with SMA Home Storage. If a defect or fault signal is indicated by the battery, the registered device owner will receive a detailed report of the event by e-mail. If the device owner contacts the SMA Online Service Center or the SMA Service Line, a replacement of the defective module can be initiated. SMA Smart Connected can be activated via the Sunny Portal.
Technical Information
How can the cable length between the battery modules be adjusted?
The DC and communication cables between battery modules mounted directly above each other can be too short or too long under unfavorable conditions.
To avoid cables that are too short or too long, you can adjust the length of the DC and communication cables as follows:
Release the cable gland from the enclosure. As needed, push the excess length of the cable into the enclosure or pull out cables that are too short. Tighten the cable gland. This ensures proper strain relief.
Why is the charging power reduced from a state of charge of 90%?
Currently, the charging power is limited from a state of charge of 90% to 4 A to protect the battery. SMA is working on an optimized charging strategy that can be adjusted at a later date via a software update.
Which inverters is the SMA Home Storage compatible with?
SMA Home Storage is compatible with hybrid inverters from SMA: the Sunny Boy Smart Energy.
How many full charge and discharge cycles are covered by the warranty?
SMA guarantees a gross current of 7.2 MWh per 1 kWh of usable capacity. In addition to the maximum energy throughput, the product retains at least 60 percent of its usable capacity (end of life). The energy throughput is equivalent to 8000 full charge and discharge cycles.
What energy capacities are available for the SMA Home Storage?
SMA Home Storage provides modules with a capacity of 4.7 kWh each. You can combine these modules to achieve different total capacities, starting at 9.4 kWh: 2 modules provide 9.4 kWh, 3 modules provide 14.2 kWh, 4 modules provide 18.9 kWh. In combination with the Sunny Boy Smart Energy, the SMA Home Storage Solution supports the use of 2 to 4 battery modules.
In what temperature range can the battery be operated?
Optimum performance of the SMA Home Storage is ensured between -4°F and 131°F for charging and discharging. The SMA Home Storage corresponds to IP65 and can be installed outdoors.
SMA Home Storage
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Discover the SMA Home Energy Solution
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