Hi Athom Team (@Emile, @Harwin, @Robin),
For me, some of the data in the Energy Dashboard still doesn’t make sense or is even wrong in my opinion. I would like to explain to you what the/my problem is.
This is the Energy Dashboard overview from yesterday as example:
A Solar
– Erzeugt (Produced): 5.2 kWh 
– Consumed: 58 %
(Maybe you’re so kind and translate the English word “Consumed” into “Verbraucht”?!)
B Elektrizität Insgesamt
– Importiert (Imported): 4.5 kWh
– Exportiert (Exported): 2.2 kWh
– Insgesamt (Total): 2.3 kWh
Q: The recorded data and the calculation are correct. But is it logical?
C Energy
– Netz (Grid): 2.3 kWh 
– Solarmodule (Solar Panels): 5.2 kWh
– Haushalt (Home): 7.5 kWh
If the house is supposed to represent the total overview of electricity consumption, which would be logical for me, i.e. how much of the solar energy produced was consumed in the household and how much energy had to be imported from the power grid, then the information is wrong.
Only 3.0 kWh of the total solar production of 5.2 kWh was self-consumed. 2.2 kWh were exported to the public grid. And a total of 4.5 kWh was imported from the public grid, not just 2.3 kWh as shown.
In my opinion, the overview should look like this:
C Energy
– Netz (Grid): 4.5 kWh
– Solarmodule (Solar Panels): 3.0 kWh
– Haushalt (Home): 7.5 kWh
But why is that the case?
Under certain conditions (see section Balkonkraftwerk (Balcony power plant)), surplus solar power that is fed into the public grid isn’t credited one-to-one in Germany, as I think is the case in the Netherlands.
Balkonkraftwerk
Usually you don’t get any money for the exported energy and it’s not deducted from the imported energy. These small solar systems are mainly intended for self-consumption and are defined by law as follows:
- A maximum of 2 kWp of solar modules
- Maximum energy feed into the own household power grid via a socket 800 W
- Bidirectional electricity meter
- Rotating disk electricity meters (Ferraris), which take exported solar energy into account, are only permitted on a temporary basis
However, the situation is different for large solar systems that require registration. If surplus solar energy is exported to the public grid, this electricity is remunerated at between 7.94 and 5.62 cents/kWh, depending on the size of the solar system.
I therefore assume that additional options would have to be added to the energy dashboard for different conditions or countries.
So in mine opinion there should be an option as to whether the exported energy:
- is compensated 1 to 1 with the imported energy
- is sold to the electricity grid operator (it should be possible to enter the sales price manually)
- is given to the electricity grid operator free of charge
Or am I misinterpreting the data or the entire energy dashboard?
