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4 Product Description
Function
Sending energy meter
data to Sunny Backup
systems
* The data is not available in all countries.
** SG-Ready is not available in all countries.
Limitation of active power feed-in
The grid operator may demand the permanent limitation of the active power feed-in for your PV plant,
this means limiting the active power fed into the electricity grid to a fixed value or a percentage of the
installed nominal plant power. If necessary, contact your network operator.
The Sunny Home Manager monitors the active power being fed into the electricity grid via a feed-in
meter. If the active power feed-in exceeds the prescribed limit, the Sunny Home Manager limits
inverter PV generation via Bluetooth.
The Sunny Home Manager prevents yield losses due to unnecessarily strong limitation of PV
generation by taking the current self-consumption of the household into account. The "increased self
consumption" function of the Sunny Home Manager also helps to use extra PV power in the
household.
Example: limitation of active power feed-in to 70% of nominal plant power
Due to high levels of solar irradiation, the plant can currently produce 90% of the nominal plant
power.
• At this time, 20% of the nominal plant power is being consumed by loads in the household.
The remaining 70% of the nominal plant power is being fed into the electricity grid.
☑ No limitation of PV generation is required.
• A load is switched off and only 10% of the nominal plant power is being consumed. As a
result, 80% of the nominal plant power is available for feed-in to the electricity grid – more
than is allowed.
☑ The Sunny Home Manager reduces PV generation from the theoretically possible 90% of
nominal plant power to 80% of nominal plant power. 70% of the nominal plant power
continues to be fed into the electricity grid.
18
HoMan-IA-en-13
Explanation
If a Bluetooth Piggy-Back Off-Grid is installed in the Sunny Backup, the
Sunny Home Manager can transfer the energy meter data to the
Sunny Backup system.
At a suitable time, the Sunny Backup activates the charge or electric
discharge of the batteries:
• If residual PV power is available, it is stored in the batteries.
• If no PV power is available, the Sunny Backup activates the
discharge of the batteries and the energy can be used.
SMA Solar Technology AG
Installation Manual
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