Modes Of Operation - Sonnen sonnenBatterie eco User Manual

Modes of operation

Self-consumption mode
The sonnenBatterie eco offers two complementary modes of
operation: Self-consumption and Backup. Self-consumption
mode ensures that you are using the power you generated even
when the utility grid power is available; backup mode makes
that self-generated power available in the event of a grid power
outage.
Many utility companies are moving to a Time of Use-based
billing scheme, in which electricity costs more during high-
demand time periods. The sonnenBatterie eco can maximize your
cost savings by using employing "rate arbitage" — using your
stored battery power during the high-cost part of the day and
recharging from solar and optionally with electricity purchased
from the grid at the lowest offered rates.
The following illustrates the interaction between the storage
system, the PV system, and the utility grid in self-consumption
mode:
A
B
C
P
Fig. 2 Self-consumption mode
The DC power that is generated by the PV array (A) is converted
to AC power by means of an inverter (B). The meters (C) and (D)
measure the current electrical power in watts. The production
meter (C) measures the power production, the consumption
meter (D) measures the power consumption in the house.
If the production is higher than the consumption, the surplus
G
D
P
H
11
E
F