Store energy when it’s the most worthwhile
The active power limitation policy in Germany forces PV systems with battery storage to curtail PV inverter power output when more than 50% of the installed PV power (kWp) is fed into the utility grid.
With its PV yield forecast and measurement of household consumption, the Sunny Home Manager 2.0 knows precisely when it needs to limit grid feed-in, for example at midday. After all, even though on sunny days as much as 100% PV power may be available, if there is no one at home to use this energy, everything over 50% has to be discarded.
To be able to use valuable PV power, it is best to store the otherwise discarded energy in a battery. You can use this practically free energy in the evenings to operate television or prepare a meal.
For such purposes, the Sunny Home Manager 2.0 always ensures that there is enough capacity left in the battery. Instead of charging the battery with excess PV power first thing in the morning, the Sunny Home Manager 2.0 controls the battery inverter to make sure as much PV energy as possible is curtailed during the midday peak so it can be stored in the battery.
Read more about SMA storage solutions:
SMA Residential Solutions