Clarify discharge to grid entity. (#29647)

* Clarify discharge to grid entity.

* Add template sensor for energy to grid.

* Tiny edits.

* Missed one

---------

Co-authored-by: c0ffeeca7 <38767475+c0ffeeca7@users.noreply.github.com>
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@ -100,10 +100,10 @@ The following sensors are available in the library:
| Energy Yield Month | kWh | Energy yield of the current month. | | Energy Yield Month | kWh | Energy yield of the current month. |
| Energy Yield Year | kWh | Energy yield of the current year. | | Energy Yield Year | kWh | Energy yield of the current year. |
| Energy Yield Total | kWh | Energy yield total. | | Energy Yield Total | kWh | Energy yield total. |
| Energy Discharge to Grid Day | kWh | Energy discharged to the Grid of the current day. | | Energy Discharge to Grid Day | kWh | Energy discharged from battery to the Grid of the current day. |
| Energy Discharge to Grid Month | kWh | Energy discharged to the Grid of the current month. | | Energy Discharge to Grid Month | kWh | Energy discharged from battery to the Grid of the current month. |
| Energy Discharge to Grid Year | kWh | Energy discharged to the Grid of the current year. | | Energy Discharge to Grid Year | kWh | Energy discharged from battery to the Grid of the current year. |
| Energy Discharge to Grid Total | kWh | Energy discharged to the Grid total. | | Energy Discharge to Grid Total | kWh | Energy discharged from battery to the Grid total. |
| Battery Charge from Grid Day | kWh | Energy charged to the battery from the Grid of the current day. | | Battery Charge from Grid Day | kWh | Energy charged to the battery from the Grid of the current day. |
| Battery Charge from Grid Month | kWh | Energy charged to the battery from the Grid of the current month. | | Battery Charge from Grid Month | kWh | Energy charged to the battery from the Grid of the current month. |
| Battery Charge from Grid Year | kWh | Energy charged to the battery from the Grid of the current year. | | Battery Charge from Grid Year | kWh | Energy charged to the battery from the Grid of the current year. |
@ -113,6 +113,38 @@ The following sensors are available in the library:
| Battery Charge from PV Year | kWh | Energy charged to the battery from the PV of the current year. | | Battery Charge from PV Year | kWh | Energy charged to the battery from the PV of the current year. |
| Battery Charge from PV Total | kWh | Energy charged to the battery from the PV total. | | Battery Charge from PV Total | kWh | Energy charged to the battery from the PV total. |
<div class='note'>
The inverter does not provide any data on the energy that is going to the grid directly.
</div>
#### Common template sensors
##### Energy to grid total
{% raw %}
```yaml
template:
- sensor:
- name: "Plenticore Energy PV to Grid Total (Template)"
unit_of_measurement: "kWh"
device_class: energy
state_class: total
state: >
{% set yield = states('sensor.scb_energy_yield_total') | float %}
{% set batteryToHome = states('sensor.scb_home_consumption_from_battery_total') | float %}
{% set pvToHome = states('sensor.scb_home_consumption_from_pv_total') | float %}
{{ yield - pvToHome - batteryToHome }}
```
The `sensor.scb_energy_yield_total` entity contains the total energy. This includes
both the energy delivered to the home as well as the energy from the battery to the
home. Think of it like all energy that leaves the inverter on the AC side.
Hence, to calculate the amount of energy flowing into the grid, you have to subtract the energy from the battery and PV to the
home.
{% endraw %}
### Settings Sensors ### Settings Sensors
The following sensors are available in the library: The following sensors are available in the library: