How are the energy balance values from the "Home" dashboard calculated? (2.0)

This article describes how the values from the "Home" dashboard are calculated.

If your data logger provides values for PV site, battery charging/discharging, wallbox charging, house consumption and grid feed-in, these can be displayed in the form of an energy balance for your energy system.

Yield, energy consumption and feed-in values can be displayed for a selected day, week, month or for the year.

Home values

Label	Description	Calculation
Self sufficiency	How independent your home is from the grid	Home consumption from the PV plant and battery, divided by total home consumption (PV, battery and grid) All values are measured in kWh
C02 savings	C02 that would have been generated by an equivalent fossil fuel system	C02 [kg] = kWh generated x C02 factor [kg/kWh] with a globally averaged C02 factor of 0.7 kg/kWh
Saved power costs	Saved costs by consumption from battery and PV plant instead of grid	Purchase compensation (for example EUR/kWh) multiplied by the sum of the home consumption from battery and PV plant
Money earned	Compensation for power fed into the grid	Feed-in compensation (eg. EUR/kWh) multiplied by the feed-in to grid [kWh] for the selected time period
Self consumption	Energy consumed by the home through PV and battery	The total kWh from the PV and battery which were consumed by the home

Energy balance

Value	Description	Calculation
PV plant generation [kWh]	Inverter energy yields, for your site	Total AC yields of all the inverters connected to the data logger.
Home consumption [kWh]	Energy consumption from the grid, the PV site and the battery.	Total AC yields of the meters "grid_consumption", "battery_consumption" and "photovoltaic_consumption".
From Grid [kWh]	Consumption from grid	Total AC yields of the meter:: grid_consumption [*]
From PV plant [kWh]	Consumption from PV sites	Total AC yields of the meter::photovoltaic_consumption [*]
From battery [kWh]	Consumption from battery	Total AC yields of the meter::
Last state of charge [%]	Last state of charge of the battery	Latest value of the state of charge [**]
Charge from PV plant [kWh]	Total yield from DC charging power	Total DC charging power of the battery from the PV system
Grid feed-in [kWh]	Energy fed into the grid from the PV site	Total AC yields of the meter:: grid_feedin [*]
Last state of charge [%]	Last state of charge of the wallbox	Latest value of the state of charge [**]
Charge from grid [kWh]	Total DC charging power from the grid	Total DC charging power of the wallbox from the grid
Charge from PV plant [kWh]	Total DC charging power from PV plant	Total DC charging power of the wallbox from the PV system
Charge from battery [kWh]	Total DC charging power from the battery	Total DC charging power of the wallbox from the battery