SMA Redefines Optimization with its Power+ Solution

From on 02/21/2017 in Category Company with 8 Comments

SMA is now taking orders for its new, game-changing Power+ Solution to optimize residential systems. Combining the proven Sunny Boy US inverter with the TS4-R Module Level Power Electronics (MLPE), the new SMA solution cost-effectively optimizes residential PV systems and ensures higher energy yields.

The Power+ Solution will redefine what it means to optimize a residential PV system using MLPE. SMA’s MLPE solution can be applied per module for operational simplicity or selectively for faster installation.

Every PV project has its own unique challenges and objectives, and there is no one-size-fits-all solution in today’s solar landscape. The Power+ Solution enables integrators to apply the technology in a way that optimizes ROI for their individual business model.

The TS4-R module components of the SMA Power+ Solution can be used like traditional MLPEs and satisfy all of the challenges that incumbent solutions address. But unlike traditional optimization, which requires MLPEs on every module even when it’s not needed, the Power+ Solution can also be applied selectively. This reduces installation time, service risk, and ultimately cost. Selectively deploying TS4-R can save up to 90 minutes of installation time per residential system while realizing greater energy production and roof usage, and providing a higher ROI.

Selective deployment is also ideal when it comes to service and O&M. Fewer components mean fewer potential points of failure and less risk, and when service is required, it is simpler.

For integrators opting for full deployment, installation can still achieve significant time-saving.

The module-based DC technology is supplied by the universal TS4 platform, which offers various levels of plug-and-play functionality. The TS4 is available as a factory integrated component through leading module suppliers. It is also available as an add-on, retrofit option exclusively through SMA, and makes any system instantly smarter and more powerful.  Benefits of the TS4 line include module-level monitoring, shutdown code compliance, shade mitigation and increased string lengths.

The TS4 has been engineered to work seamlessly with the Sunny Boy US inverter, which is the fastest PV inverter to install. This allows installers and distributors to realize additional cost savings by reducing the total number of products they must carry. Now, integrators can carry one line of inverters for MLPE and non-MLPE applications, which reduces warehouse space while also improving flexibility when installation requirements change at the last minute.

For data monitoring, module-level diagnostics can be viewed through Sunny Portal – the world’s largest monitoring repository for PV systems.


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The Author


Jessica Dumont is a public relations specialist for SMA America. She is focused on news, industry trends and what's happening at SMA.


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  • avatar

    Andrew P.

    03/01/2017 at 11:59 am

    Is the TS4-R-O solution compatible with Secure Power Supply and SMA’s Rapid Shutdown System?

    Reply »
    • avatar


      03/07/2017 at 11:47 am

      Hi Andrew, thanks for your question. When the TS4 platform is used for selective deployment and TS4-R-O units are attached only to modules with shade impact, the Secure Power Supply function will still work. In this case, SMA’s Rapid Shutdown System will also still function as needed to meet code requirements.

      When the TS4 platform is used specifically for Rapid Shutdown, the shutdown signal will be sent to all TS4 units, and in this case, Secure Power Supply will no longer work.

      Reply »
      • avatar


        09/24/2017 at 2:29 pm

        Thank you for the explanation regarding the TS4-R, if I use the TS4-O in all modules will the SPS work?

      • avatar


        10/02/2017 at 9:34 am

        As long as the communications component (the Rooftop Communications Kit) is installed, the SPS will not work.

      • avatar

        Mark Brill

        10/18/2017 at 8:34 am

        Mike. Is that right? You’re saying the SPS will NOT work if the Rooftop Communications Kit is installed? I thought the Rooftop Communications Kit always installed which would means your response would imply that the SPS would never work with TS4-O. that seems contrary to what Jessica stated.

      • avatar


        10/19/2017 at 1:48 pm

        Correct – any time the Rooftop Communications Kit (RCK) is installed, the SPS function will not work. With the RCK installed, loss of AC power will cause the TS4 units (either -S or -O) to go into shutdown mode, thus the inverter will not see DC voltage, and cannot turn on in SPS mode. If the TS4-O units are installed without the RCK, they will work to mitigate shade, but will not provide shutdown functionality or provide module level data. In this case, loss of AC power does not send the TS4-O units into shutdown, thus the Sunny Boy will still have DC voltage during the day if the grid fails, allowing for SPS usage.

  • avatar

    Clarence R Fuqua

    04/05/2017 at 8:10 am

    What is the optimin number of solar panels for each inverter?

    Reply »
    • avatar


      04/06/2017 at 12:53 pm

      Hi Clarence. The use of the Power+ solution does not really change the normal design guidelines for our Sunny Boy inverter. Using the TS4-S units does not change the design guidelines for our Sunny Boy inverter at all. PV module strings that do not go above 600 VDC on the coldest day, and can achieve the 125 VDC start voltage [and remain over 100 VDC on the hottest days] are acceptable. TS4-O units do not change the maximum string length design guidelines as they never boost voltage. The minimum voltage requirement does not change, but the TS4-O units will boost the output current of shaded modules by bucking their voltage. Therefore, shaded modules with TS4-O units should be included on longer strings. These guidelines are appropriate for all of the MPPT channels of the inverter.

      The optimum number of solar modules will remain the number that provides the system owner with the most energy over lifetime for the lowest cost. That will be dependent on the install location, shape and size of the roof, and the owners electricity bill.

      Reply »

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