SMA Inverter Review

SMA solar inverter review

home > solar inverters > best inverters review > SMA Solar Inverter Review

SMA is a world-renowned solar inverter manufacturer and one of the few companies offering high-performance solar inverters designed for residential, commercial and utility-scale grid-tie systems, as well as small residential and large-scale off-grid solar systems.


SMA Inverters Quick Summary

  • First established: 1981 - Long-standing company

  • Best residential solar inverter: Sunny Boy 5kW

  • Best commercial solar inverter: Tripower Core 1 50kW

  • Price bracket: High $$$$$

  • Warranty: Standard - 10 years (5+5) options up to 25 years

  • Quality and reliability: Excellent 5/5

  • Service and support: Very good 4.5/5

  • System Monitoring: Very Good 4/5

  • Overall: Highly Recommended ☆☆☆☆☆

Company History

SMA is a solar icon. The German company was established in 1981, which is prehistoric in the world of solar, and for a long time, the SMA string inverters, branded Sunny Boy and Sunny Tripower, were head and shoulders above any other on the market. In Australia, from when the solar boom started around 2008, if you were to ask any solar installer which string inverter on the market was the best (regardless of price), they would no doubt utter the letters SMA. That is no longer the case, at least not in the 5 - 30kW inverter sizes. While SMA is still a leader in the large-scale inverter market, they are not ranked as high for small to medium residential and commercial installations.

Despite the high profile, SMA has faced tough competition over recent years, and one area where they have struggled to compete is in the rapidly growing hybrid or home energy storage market, where hybrid and multi-mode inverters have dominated.

See the latest opinions and SMA inverter reviews in our solar information forum. 


SMA Solar Inverters

  • Sunny Boy - Single Phase residential Solar Inverters - 1.5kW to 6.0kW

  • Sunny Tripower - 3-phase Solar Inverters - 3.0kW to 10kW

  • Sunny Tripower X - 3-phase Solar Inverters - 12kW to 25kW (NEW)

  • Sunny Tripower Smart Energy - 3-phase Hybrid Inverters - 5.0kW to 10kW

  • Sunny Tripower Core 1 & Core 2 - Commercial Inverters - 50kW to 110kW

  • Sunny Highpower PEAK3 - Commercial Inverters - 125/150/165/172 kW (NEW)

Sunny boy single phase residential inverters (Red), and small scale 3-phase Tripower inverters (blue).

Sunny boy single phase residential inverters (Red), and small scale 3-phase Tripower inverters (blue).

SMA Hybrid Inverters

  • Sunny Boy Storage - Battery storage Inverters - 2.5kW to 6.0kW (obsolete)

  • Sunny Boy Smart Energy - 1-Phase Hybrid inverters from 3.8kW to 11.4kW (NEW)

  • Sunny Tripower Smart Energy - 3-Phase Hybrid inverter series

  • Sunny Island - Off-grid and hybrid multi-mode Inverter-chargers - 3kW to 6.5W+

SMA sunny island (yellow), Sunny Boy Storage and Sunny Tripower 3 phase inverters.

SMA sunny island (yellow), Sunny Boy Storage and Sunny Tripower 3 phase inverters.


The Sunny Boy Story

The popular SMA Sunny boy TL series inverter was one of the best selling solar inverters ever.

The popular SMA Sunny boy TL series inverter was one of the best selling solar inverters ever.

When it came to reliability, SMA was for a long time seen as the only option. This was hugely important in a market getting flooded with new inverter brands every year, and many of those inverters continually proving the proverb “you get what you pay for.'' SMA was one of a few inverters that installers knew they could count on to last for 10 years or more. SMA inverters were all German made, which fed into peoples preconceived idea that German manufacturing was superior. This was very true at the time as the fledgling Chinese inverter manufacturing industry was not producing reliable inverters.

Over the last few years, the superiority that SMA held for so long has eroded slightly. Not so much because its products or service have diminished, but because the competition has become much tougher. There are now a number of inverter brands around the world that experienced installers are happy to vouch for. Whilst Fronius is now at the top of this list, there are a number of Chinese inverter brands including Sungrow, Huawei and Delta which also offer reliable inverters at very competitive prices.

The new Sunny boy AV series is now fully manufactured in Germany.

The Sunny boy AV series is fully manufactured in Germany.

It is perhaps this change in the competitive landscape that led SMA to try manufacturing in China in order to reduce costs. One of the big selling points for SMA has always been that its inverters were manufactured in Germany. That began to change around 2013 when SMA bought a majority stake in Zeversolar. The Clean Energy Reviews team was quite positive about this move, hoping that SMA would be able to transform this Chinese inverter manufacturer and create a low-cost reliable inverter. However, whilst the Zeverlution models rolled out after SMA’s takeover did get some positive interest, Zeversolar has not to this point made big headway into the residential inverter market. The foray into China via Zeversolar was potentially a strategic move to investigate the viability of manufacturing their own branded Sunny Boy inverters in China.

Made in Germany

In response to the drop in sales, late in 2018 SMA decided to go back to its roots and consolidate its operations back in Germany. This move was very well received in the industry. It is important to emphasise that we are not concerned with the quality of manufacturing in China, as some of the worlds best products are made in China. It’s more about SMA’s desire to go back to its roots and focus solely on high-quality production and reliability rather than reducing costs.


Sunny Boy - AV series Inverters

The tiny Sunny Boy inverters from 1.5 to 2.5 kW

The tiny Sunny Boy inverters from 1.5 to 2.5 kW

The Sunny Boy is the name given to SMA’s residential single-phase inverters. After a slow start, these sleek, efficient, lightweight inverters are now gaining in popularity around the world and are rated as one of the best quality solar string inverters. The current AV range is available in 3.0, 3.6, 4.0, 5.0 and 6.0kW sizes, along with the very compact and lightweight Sunny Boy 1.5, 2.0 and 2.5kW.

Features

The new Sunny Boy models have wifi as standard; however, like most inverter manufacturers nowadays, they do not have a display. This is becoming more common as the display is one of the weakest points on any inverter. The inverter setup and monitoring are now managed using wifi or Bluetooth. The main problem with this is that it can be frustrating if you have connection issues, which is why an intuitive, easy-to-use, and robust mobile app is essential.

Reliability

The most important thing regarding an inverter is reliability, and the Sunny Boy was seen as the most reliable inverter on the market. So far, the Sunny Boy AV series has generally had a very good rap from installers, with the only gripes being with network or wifi connections, a common issue with most display-less inverters. While the latest model has not been around long enough to be sure it has the same reliability as previous Sunny Boy TL models, there is no reason to think that the new AV series is not built to the same high level of quality.

Download the SMA Sunny Boy AV series datasheet.


Sunny Tripower - 3 Phase inverters

The newly released Sunny Tripower AV series

Sunny Tripower AV series inverter

The Sunny Tripower is the 3 phase version of the Sunny Boy and is available in a wide range of sizes for residential and commercial installations. The smaller residential Tripower also had a revamp recently and comes in a tidy, lightweight, compact package similar to the Sunny Boy. The new AV Tripower comes in 3.0 to 6.0kW range, which you could easily mistake for a Sunny Boy, both in features and size/weight (the main difference being the deep blue colour for the Tripower and bright red for the Sunny Boy). There is also an 8.0 and 10.0kW model in the new compact efficient package.

For the larger commercial systems, the old faithful SMA Sunny Tripower still comes in the 15000TL, 20000TL and 25000TL versions. These proven, reliable inverters are still very popular for all kinds of larger-scale commercial systems up to several hundred KW in size.

Download the SMA Tripower AV series datasheet.


Sunny Tripower X

The next-generation Sunny Tripower X inverter was finally launched in 2022. The new 3-phase solar inverter platform replaces the decade-old Sunny Tripower TL series, which had built a reputation as one of the most solid and reliable 3-phase inverters ever produced.

The latest Tripower X is available in power ratings from 12 to 25kW, making it perfect for large residential or smaller commercial solar systems. Besides the new white colour and modern design, the inverter comes packed with innovations and features, including 3 MPPTs with high input current (35A Isc) ratings for parallel strings and an inbuilt arc-fault circuit interrupter (ArcFix). More notably, the Tripower X series incorporates a new integrated control system built on the SMA ennexOS platform, which can monitor up to five different inverters and one energy meter, making system setup and configuration much more straightforward.

Download the SMA Tripower X series datasheet.


Tripower Core 1

The unique 50kW SMA Core 1 free standing commercial inverter featuring 6 x MPPT’s

The 50kW SMA Core 1 free-standing commercial inverter featuring 6 MPPT’s

A special mention is warranted for the Sunny Tripower Core 1, 50kW inverter. This award winning inverter clearly highlights SMA’s focus on larger scale systems and why SMA is so popular in the commercial solar space. SMA calls this “the world’s first free-standing string inverter”, meaning it can be fixed to the ground, or roof, rather than onto a wall.

The unique design is the first thing you notice about the Core 1, but it does not stop there. The 6 MPPT inputs allows for a lot of flexibility in design, and improved performance if there is a need to place arrays on slightly different angles, or orientations. This flexible inverter allows for reasonably small 50kW installs, right up to 1000kW (or 1MW). The Core 1 comes packed with features at a price point that make it highly competitive in the small to medium commercial market.


Tripower Core 2

The new 110kW Tripower Core 2 inverter from SMA features 24 string inputs and 12 x MPPT’s

The larger 110kW Tripower Core 2 inverter is the most powerful string solar inverter released by SMA and features impressive 24-string inputs using 12 x MPPTs. Unlike the free-standing Core 1 inverter, the Core 2 inverter is built around a more traditional wall or floor-mounted design, which is similar in layout to the offerings from other leading manufacturers. The Core 2 is built in collaboration with Sungrow and based on the SG110CX. The inverter is designed for large commercial and utility-scale systems as multi-string inverters are generally considered more flexible and reliable than central inverters.

Download the full SMA Tripower Core 2 datasheet.


SMA Energy Storage Options

SMA has developed various solar battery storage solutions, from off-grid and AC-coupled systems to modern all-in-one hybrid inverters with high-voltage battery integration for single-phase and three-phase applications.

  • Sunny Island Series – SMA’s long-standing off-grid inverter, was designed for stand-alone power systems, microgrids, and backup applications. Unlike modern hybrid inverters, Sunny Island operates independently of solar inverters, functioning as a centralised battery inverter in AC-coupled solar systems.

  • Sunny Boy Storage – SMA’s first AC-coupled battery inverter was designed to add battery storage to existing solar systems. It is now obsolete due to limited backup capability and has been replaced with the all-in-one hybrid inverter.

  • Sunny Boy Smart Energy – The latest generation single-phase hybrid inverter with 200% DC oversizing, multiple MPPTs, and scalable high-voltage battery storage (3.3kWh to 16.4kWh). Supports various backup options, making it SMA’s most flexible home storage solution.

  • Sunny Tripower Smart Energy – SMA’s three-phase hybrid inverter, designed for larger homes and commercial applications. It supports higher power output, larger battery capacities, and full three-phase backup capability when paired with compatible high-voltage batteries.

Sunny Boy Smart Energy

SMA Sunny Boy Smart Energy System

SMA Sunny Boy Smart Energy System - Image credit SMA

SMA’s latest hybrid inverter solution, the Sunny Boy Smart Energy, is designed to provide maximum solar and battery flexibility. This new hybrid system is designed for homeowners who want to optimize solar self-consumption and provide backup power. While the system is similar to much of the competition, it can operate as a hybrid inverter for new solar & battery setups or an AC-coupled inverter to upgrade existing solar systems with battery storage. The Sunny Boy Smart Energy system is available in the US and Europe but has not been launched in Australia or New Zealand.

Key Features & Benefits

The SMA Sunny Boy Smart Energy highlights include multiple size options and 200% DC oversizing, ensuring maximum energy capture and storage during the shorter winter days. Other notable features include a wide MPPT voltage range (60V to 480V), allowing for greater solar array configuration flexibility, while the multiple MPPT inputs (3 or 4) enable system designs for complex roof layouts with multi-string setups.

SMA Sunny Boy Smart Energy Inverter
  • Numerous Inverter Sizes – Currently available in 3.8kW, 4.8kW, 5.8kW, and 7.7kW

  • Larger 9.6kW and 11.5kW versions are expected later in 2025.

  • 200% DC Oversizing on all inverters.

  • Wide MPPT Voltage Range (60V to 480V).

  • 3 MPPT solar Inputs as standard (4 MPPTs on larger 9.6 & 11.5kW models).

  • Backup Power Options (in Development) – Three-tier backup system, allowing for higher levels of backup power if needed (see below).

  • Download the SMA Sunny Boy Smart Energy Datasheet

SMA Smart Storage Battery System

The SMA Smart Storage Battery is a high-voltage lithium battery designed to integrate seamlessly with the Sunny Boy Smart Energy inverter. This modular, stackable battery system allows homeowners to store excess solar energy and use it during peak demand periods or power outages, reducing reliance on the grid and increasing energy independence. Like most stationary lithium batteries, the SMA battery uses lithium iron phosphate (LFP) chemistry, known for its high safety, thermal stability, and long lifespan. The battery modules are relatively wide (610mm) and tall (483mm), considering the capacity is only 3.2kWh per module, meaning they will need a considerable amount of wall space compared to an equivalent rack-mount system. However, they are very narrow at only 215mm (8.5”), meaning they will not protrude or block any access in narrow spaces. Download the SMA Home Storage Battery Datasheet.

🔋 Capacity & Sizing – Available in scalable modules from 3.3kWh to 16.4kWh

Voltage & Chemistry – Uses high-voltage lithium iron phosphate (LFP) cells

🔄 Cycle Life & Warranty – Designed for over 6,000 cycles, with a lifespan of 10+ years and a 10-year warranty.

Backup Power Options

One of the few disappointing features of the SMA Smart Energy system is its low backup power capability, called Backup Secure, which is limited to 1900W. While Backup Secure is limited to basic essential loads, SMA has announced two higher-capacity backup solutions in development, which are described below. Once available, this will provide homeowners with greater resilience during grid outages, ensuring critical loads or even whole-home backup power. However, it is unknown what additional equipment may be required to enable the Backup Select and Backup Home options.

SMA Home Energy System

SMA Smart Storage battery system

  • SMA Backup Secure (Available Now)

    • Provides up to 1,900W of power through a dedicated secure outlet.

    • Ideal for keeping essential appliances running during a blackout.

  • SMA Backup Select (Coming Soon)

    • Whole-home backup power with significantly higher capacity.

    • Supports up to 7.7kW for systems using 3.8kW to 7.7kW inverters.

  • SMA Backup Home (Coming Soon)

    • Whole-home backup power with significantly higher capacity.

    • Supports up to 7.7kW for systems using 3.8kW to 7.7kW inverters.

    • Supports up to 11.4kW for systems using 9.6kW or 11.5kW inverters.

    • The system can utilize full PV generation during an outage when paired with a sufficiently sized battery.

Pros and Cons

The SMA Sunny Boy Smart Energy is a flexible hybrid inverter with 200% solar oversizing capability but with limited backup power (at present). With multiple size options, excellent build quality, and a 10-year warranty, it is a high-quality option for homeowners looking to maximize solar and battery performance using equipment from a well-established, trusted company.

  • ⭐ Pros:

    ✔️ Wide range of inverter sizes, with larger models coming in 2025

    ✔️ 200% DC oversizing for increased solar generation and battery charging

    ✔️ Hybrid and AC-coupling options for both new and retrofit installations

    ✔️ Scalable SMA Smart Storage Battery with up to 16.4kWh capacity

  • ⚠️ Cons:

    ❌ Current backup option (Backup Secure) is limited, but more advanced backup solutions are in development.

    ❌ Premium price compared to basic hybrid inverters.

    ❌ Not available in Australia or New Zealand.


Sunny Tripower Smart Energy - 3-Phase Solution

The Sunny Tripower Smart Energy inverter, released in 2022, was SMA's first all-in-one 3-phase hybrid inverter. This is surprising, considering SMA was at the forefront of hybrid and energy storage systems in the mid-2000s with the flagship Sunny Island inverter-charger. Most of SMA's competitors have had hybrid inverters on the market for many years, but like their main rival, Fronius, SMA took their time and developed a highly capable and powerful hybrid inverter that will undoubtedly become a popular choice for many SMA fans.

The Tripower hybrid inverter has power ratings from 5.0 to 10kW, making it perfect for medium to large households. The specifications feature a wide MPPT voltage range, 150% solar oversizing, and respectable backup power ratings with an adjustable backup time. The adjustable backup time setting enables it to be used as either a UPS or to temporarily cut power for up to 10 seconds to notify the user that a grid outage has occurred and thus be conscious of how much energy is being consumed.

The new Sunny Tripower smart energy hybrid inverter key specifications


Sunny Boy Storage - SBS (now obsolete)

To add battery storage to a grid-connected home, SMA developed the unique Sunny Boy Storage Inverter (SBS) to create an AC-coupled energy storage system. The SBS inverters connect with high voltage (300-500V) batteries, such as the LG Chem RESU-H and can be AC-coupled with any standard solar inverter.

The new generation, more powerful Sunny boy storage inverter for adding battery storage.

AC-coupled Sunny boy storage inverter for adding battery storage to new or existing solar systems.

The first SBS2.5 released in 2016 was not a huge success as it was limited to 2.5kW charge and discharge power, which is a little undersized for most modern households. The second-generation SBS released in 2018 (shown) was far more powerful and is the first battery inverter with multi-string battery connections, meaning it can be connected with up to three separate batteries. The new SBS AC coupled battery inverters are available in 3 sizes, 3.7kW, 5.0kW & 6.0kW and have high peak power ratings of 4.6kW, 6.3kW & 7.5kW, respectively. The two larger inverters are much better suited to handle the relatively high loads of modern electric households.

The Sunny Boy Storage inverters can provide backup power with an additional backup box, of which there are two options. The standard manual changeover switch for ‘essential circuits’ or the fully automatic backup unit if larger loads are needed to be backed up in the event of a prolonged blackout.


Sunny Island Off-grid Inverters

SMA’s Sunny Island (SI) inverters are highly regarded in the off-grid solar world, being one of the few high-quality off-grid inverters with proven long-lasting reliability. The Sunny Island series was launched over a decade ago and quickly became the go-to inverter for any serious off-grid installation for single-phase and advanced three-phase remote power systems.

SMA Sunny Island off-grid and hybrid multi-mode Inverter.

SMA Sunny Island off-grid and hybrid multi-mode Inverter.

However, just as the Sunny Boy string inverters lost some ground over recent years, so too has the Sunny Island (SI) due to some serious competition from the likes of Selectronic in Australia, Outback Power in the USA and Victron Energy in Europe. While the Sunny Island has had a few minor updates, these three well-established companies have made some big advancements, especially in the grid-connected hybrid storage segment. They also offer high-performance off-grid/hybrid inverter solutions at the same level as the SMA Sunny Island series.

See the full SMA Sunny Island datasheet.

Best off-grid inverter for extreme locations

The Sunny Island is the only high-powered multi-mode inverter with an IP54 weather rating. This means it can be installed outside in relatively exposed locations. Most competing inverters in this class are only IP20-rated, which means they can only be installed in well-protected areas or indoors. The Sunny Island inverters also incorporate an advanced active cooling system, which helps improve reliability and performance in high temperatures.

The SMA sunny island inverter temperature power derating chart

The SMA sunny island inverter temperature power derating chart

Grid-tie Energy Storage

In regards to grid-connected hybrid systems, the biggest downfall of the Sunny Island is the lack of an internal AC bypass contactor. This feature enables pass-through power and almost instantaneous grid-isolation, something most of the other off-grid/multi-mode inverters offer. Without the internal contactor, it is more complex and difficult to set up a hybrid backup solar system and it does not offer instantaneous backup in the event of a blackout.

On the plus side, one of the unique capabilities of the Sunny Island inverters is the level of scalability which is unmatched by almost all other systems. The Sunny Islands can be used to power a simple off-grid home right through to large scale micro-grid’s for powering remote communities and commercial operations using the powerful and flexible SMA cluster controllers.

SMA AC coupled off-grid solar system designed and installed by Off-grid Energy Australia.


System Monitoring

The SMA monitoring platform, known as the Sunny Portal, set the standard in the early days of online monitoring, but after a decade without any significant updates, it looked very dated. Fortunately, the platform was overhauled and redesigned with a more modern and intuitive interface.

SMA Sunny Portal

The new look SMA Sunny Portal monitoring interface

The new look Sunny Portal powered by ennexOS is a much more modern user friendly interface

The Sunny Portal is a free cloud-based monitoring platform from SMA. It provides a great insight into the performance of the solar system, plus far more detail can be obtained if required. This is a vital piece of software, given that all new Sunny Boy and Sunny Tripower inverters do not have a display. The latest model SMA inverters all ship with wifi webconnect as standard, so it is relatively easy to set up the Sunny Portal monitoring. Additionally, if Tigo optimisers are added to the panels, Sunny Portal allows installers and property owners to see the performance of individual panels in real-time.

The (expensive) SMA sunny home manager 2.0 energy meter

The (expensive) SMA sunny home manager 2.0 energy meter.

The Sunny Energy Meter unit is required to enable energy consumption and solar generation monitoring. However, for those who can afford the optional Sunny Home Manager 2.0, it gives great insight into home energy consumption and advanced energy management features, essentially acting as a control centre for your home's energy usage. SMA claimed the Home Manager 2.0 was more cost-effective by combining the functions of smart home management and the SMA Energy Meter into a single device, but it is prohibitively expensive compared to most other energy meters on the market at nearly double the price of $800.

New SMA Energy App

It’s been a long wait but SMA has finally released a newly updated monitoring app called SMA Energy. The previous SMA mobile App was very dated, had limited features and didn’t provide real-time or direct system monitoring. Fortunately, the new modern app has addressed many of these issues and is packed with new smart control features when coupled with the home manager 2 and EV charger. However, user feedback has been very poor so far due to bugs and intermittent data. It appears SMA still has some work to do to provide a reliable and fully functional app.

The new SMA Energy mobile monitoring app with improved user interface and new smart features - see full details here

SMA ennexOS energy management platform

In 2020, SMA launched a new energy management system called ennexOS, built around a new smart IoT data management device. It was initially designed for commercial and industrial applications in combination with the SMA Data Manager, and it also manages power for different applications such as heating and refrigeration. However, it has now been integrated into all Sunny Portal for all new systems.

The central energy management device for larger commercial systems is the SMA Data Manager, which is also used for communication, setup and commissioning. The device can be wall- or DIN-rail mounted and connected to an Ethernet network, or it can use a WLAN interface to allow access without using the customer's IT infrastructure.

The advanced SMA ennexOS energy management system for complete building energy flow integration and control

SMA describes the system as: “ennexOS is the first IoT platform for energy management that combines the data from different energy sectors in a complete system. Besides electricity, this also includes heat, refrigeration, cooling, storage and mobility. ennexOS analyzes all energy flows and will also intelligently control them in the future. The goal is to efficiently use available energy across all sectors and to identify potential savings.”

Learn more about the ennexOS platform and data manager.


SMA partnership with Tigo

SMA has bought a stake in the power optimiser (optimizer) company Tigo which develops a product used for panel level monitoring, rapid shutdown, as well as power optimisation. In fact the TS4-R model optimiser (optimizer) is also modular, so it can be installed simply for monitoring and rapid shutdown, or if required the optional optimiser very easily slots in to the device. SMA engineered the new Sunny Boy models so that the Tigo TS4-R model will work seamlessly with the Sunny Boy 3.0 - 6.0 models. The big selling point of the Tigo TS4-R is that the power optimiser does not need to be installed on every panel in the solar system, it can just be added to a particular panel that will be affected by shade, thus reducing the cost significantly.

Tigo.png

Note that while SMA did manufacturer a Sunny Boy 240 micro inverter for a few years, they are not currently selling any micro inverters. We have mentioned that Fronius is a strong competitor to SMA in the small scale string inverter market, however, we should note that Enphase poses serious competition with its micro inverters also. There is strong data to suggest that whilst the upfront cost of an Enphase system is higher, the ROI is often greater than that of a string inverter system. Read more about Tigo optimisers vs micro inverters in our forum.


SMA Inverter Warranty

SMA offers a 5-year factory warranty on all inverters which is automatically extended to 10 years when the system is registered on the SMA homepage within 12 months after installation at www.my.sma-service.com/s/product-registration. The company also offers extended product warranties of 15, 20 and even 25 years for an additional fee which varies based on the country or region. You can expect to pay around $500 for an extended 20-year warranty on residential solar inverters. The warranty covers repair and replacement of the inverter, plus labour, parts, and shipping, provided they have been able to verify the problem. Learn more about the SMA extended warranty in Australia.

SMA also offers a free active ‘Smart Connected’ warranty service which provides ongoing system monitoring and performance analysis by SMA. If an issue is detected, it can be quickly and efficiently resolved, sometimes without the need for an installer to perform the often difficult and time-consuming onsite troubleshooting and diagnosis.

Considering the SMA inverter warranty period is 5 or 10 years, it’s unfortunate that the Sunny home manager, energy meter, and data manager warranty are a disproportionately shorter 2 year period. This is compounded by the fact that, unlike solar inverters, the various meters are installed inside a protected electrical enclosure and not exposed to the elements.

SMA inverter warranty details chart for solar inverters, hybrid inverters, and energy meters.

Smart Energy Battery Warranty

The Smart Energy Battery Warranty is a little unusual in that it is only 2 years and requires online registration within 30 days of installation to extend it the full 10 years. The SMA website states:

The duration of the standard warranty for the SMA Home Storage is two years. The owner gets eight years extra warranty by registering the product in the SMA Online Service Center within 30 days after commissioning, which makes 10 years in total. More information can be found here: www.sma.de/en/service-support/warranty-cover-home. The duration of the performance warranty is 12 years.

Battery lifespan and End-of-life capacity

While SMA claims an impressive lifecycle of up to 6000 cycles and a lifespan of 10+ years, the end-of-life (EOF) capacity is at the lower end of the spectrum at 60%. Some other premium manufacturers have increased the EOF capacity to 70% or even 80%, but usually with a limited energy throughput. SMA has chosen to stay at the standard 60%. Only time will tell how they perform over their lifetime. The SMA battery warranty document states:

“Warranty Period for Performance Warranty In addition to the Product Warranty, Warrantor warrants that after an energy throughput per kWh usable capacity of 7.2  MWh the Product retains at least 60 percent (60%) of its usable capacity (End of Life)…”


Conclusion

SMA manufactures some of the best quality and most reliable solar inverters in the world, backed by an extensive warranty and excellent service. After being considered the world leader for many years, SMA did lose some of its shine in the smaller-scale residential market but has made huge ground in the commercial and utility solar sector. While in the rapidly advancing hybrid and off-grid solar world, the once leading Sunny Island multi-mode inverters have grappled with tough competition from manufacturers focused solely in this space. However, the latest Sunny Home energy storage hybrid inverters look impressive and may bring SMA back to the forefront of home energy storage, but only once they upgrade to the whole home backup option to bring them in line with other manufacturers.

The company is cementing its place as a leader in the commercial and utility-scale solar inverter market with the impressive Tripower Core 1, Core 2, Sunny Highpower and Sunny Island central inverters, which have been at the forefront of the energy transition in Australia.

SMA is moving ahead and continuously improving with more advanced monitoring, upgrades to the Sunny Boy AV series and the new 3-phase version of the Sunny Tripower X. Feedback from solar installers and industry professionals is generally very positive, particularly on larger commercial systems, but we hope to see more progress from SMA in the residential solar and energy storage sector going forward.


Jason Svarc

Jason Svarc is an accredited solar and battery specialist who has been designing and installing solar and battery systems for over a decade. He is also a qualified engineer and taught the off-grid solar design course at Swinburne University (Tafe). Having designed and commissioned hundreds of solar systems for households and businesses, he has gained vast experience and knowledge of what is required to build quality, reliable, high-performance solar power systems.

Next
Next

Battery Life Explained - How to Prolong the Life of Lithium Batteries