Load Balance And Control - SMA sunny home manager User Manual

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Difference between Internal Power Supply and Self-Consumption in PV Systems
with Batteries
Internal power supply = the sum of power/energy that your household draws directly from your
system (direct consumption) and the battery (battery discharging). The internal power supply
therefore indicates from which source your household is supplied with PV energy - from the PV
system or from the battery.
Self-consumption = the sum of the power/energy that your household draws directly from your
system (direct consumption) and the power/energy that your system stores in the battery (battery
charging). The self-consumption therefore indicates how the PV energy is consumed - via your
household or via battery charging.
In systems without batteries, self-consumption is the same as internal power supply.
6.2.4

Load Balance and Control

Requirements for displaying the page:
☐ In the Sunny Home Manager system, loads must be available and configured that are
connected to radio-controlled sockets or that can be directly controlled by the
Sunny Home Manager (see Section 9.2, page 75 and Section 9.4, page 90).
Tip: you can select the loads that are to be displayed in the diagram (see Section 7.3, page 64).
Tip: the loads are displayed in different colors in the diagrams for better visualization. The assigned
color can be changed if necessary (see Section 9.3.2, page 80).
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Content
Data in the Generation diagram:
• Total yield: Total amount of energy that your PV system has
generated so far
• Self-consumption: Total amount of energy that your
household drew directly from your PV system so far (direct
consumption) and energy that your PV system has stored in the
battery (battery charging) so far.
• Battery charging (only displayed for systems with battery):
Total energy that your system has stored in the battery so far
• Grid feed-in: Total amount of energy that your system has fed
into the utility grid so far
Additional data:
• Self-consumption rate: Ratio of self-consumption to total
yield.
• Direct consumption rate (only displayed for systems with
battery): Ratio of direct consumption to total yield
• Self-sufficiency quota: Current ratio of internal power supply
to total consumption.
SMA Solar Technology AG
User Manual