3 Service Description
SMA Solar Technology AG
Operating manualHM-20-BE-en-1914
Optimized self-consumption through dynamic active power limitation
• Through forecast-based load control, the SunnyHomeManager ensures that even on sunny days excess energy
hardly ever gets lost that has to be "curtailed" due to the limitation of the active power.
• When using SMA battery inverters, the SunnyHomeManager prevents derating losses that can be caused by
limiting the active power feed-in. Taking the PV generation forecast and the consumption forecast into account, the
time and duration of battery charging are chosen so that the battery is charged when PV energy is available.
Increased self-consumption through forecast-based battery charging
The SunnyHomeManager increases the efficiency of your PV system by storing the excess energy generated during
the midday peak, which is not allowed to be fed into the utility grid due to the active power limitation, in batteries.
By means of the location-based weather forecast, the SunnyHomeManager can predict the solar irradiation for some
hours to days and check whether derating losses due to the limitation of PV grid feed-in are to be expected for the
current or following day. This means that in the afternoon of the current day only as much PV energy is charged to the
battery as to ensure that, with the remaining battery charge, grid-supplied power at night and on the morning of the
next day can be avoided. Any derating losses forecast for the following day are avoided by the free storage capacity
of the more heavily discharged battery.
Increased self-consumption through peak load shaving
In systems with SMA battery or hybrid inverters, the self-consumption portion can be additionally increased and more
electricity costs saved by virtually distributing the total storage capacity of the battery between increased self-
consumption and peak load shaving (multi-use). In doing so, the battery can be integrated even more flexibly into your
energy management
• Increased self-consumption - through flexible use of the self-generated solar power stored in the battery at times
when insufficient or no solar power is produced
• Peak load shaving - limitation of power consumption from the utility grid; any increased energy demand at certain
times is drawn from the battery
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