Solare Datensysteme Solar-Log - Manual (Page 104)

104
Configuring Plant Data
19�5 Defining the Feed-in tariff
The feed-in tariff is generally used to calculate a PV plant's output in financial terms.
Considering that self-consumption is used at more and more plants, there are also other calculation modes.
General
The plant costs are set in euros in the General menu. This value is used for the Diagnostic | Finances func-
tion.
The Yield offsets field is used to manually add the plant's previously yields,
e.g. in cases when the plant was already operational before having a monitoring system installed. These
yields are included in the
yield forecast.
Note
When using several plant groups, only one plant group can be used with a tariff mode
with self-consumption refund or self-consumption.
Tariff settings
The Solar-Log™ provides four different modes:
•
Feed-in tariff
•
Feed-in tariff + Self-consumption refund
•
Feed-in tariff + Self-consumption
•
Consumption of Self-produced power
Feed-in tariff mode
All of the power output from the PV plant is completely fed into the grid. Every kilowatt hour is reimbursed
according to the valid remuneration rate.
In this mode, the From date and the corresponding rate in cents for the feed-in tariff need to be defined.
The Solar-Log™ calculates the amount of power fed into the grid based on the inverter information.
Feed-in tariff + Self-consumption refund mode
Here a distinction is made between generated power that is fed into the grid and that is directly consumed
(self-consumption). In accordance with feed-in tariff agreements (or renewable energy laws), a bonus is
paid for self-consumption. This provides a financial incentive for self-consumption. To implement this func-
tion, the Solar-Log™ requires an additional consumption meter.
In this mode, the From date and the corresponding rate in cents for the feed-in tariff and self-consump-
tion refund need to be defined. The electricity prices are entered in an extra tab. The Solar-Log™ calculates
the amount of power fed into the grid based on the inverter information.
Feed-in tariff + Self-consumption mode
In this mode, only the fed-in power is reimbursed. There is still an incentive for self-consumption because
generally the costs for power obtained from the gird are higher than the production costs of self-produced
power.
To implement this function, the Solar-Log™ requires an additional consumption meter.
In this mode, the From date and the corresponding rate for the feed-in tariff need to be defined. The
electricity prices are entered in an extra tab. The Solar-Log™ calculates the amount of power fed into the
grid based on the inverter information.