DA: Degree of Autonomy
TSO: Transmission System Operator
EC: Energy Cell

Where:
a : the DA
E VB : the overall consumed energy
E DV : the direct consumption (from the PV panel or from the cell production)
E BE : the battery discharge to supply the system’s demand
E NB : the energy consumed from the grid

DA = (the overall consumed energy - the energy consumed from the grid) / (the overall consumed energy )

If we simulate with a constraint on the DA representing the inflow TSO --> EC
Might be equal to the OEM in the end.

Note that with formula, the system is put under a constraint as a whole. So for now one cannot simulate two energy providers with different minimal_DA. This would be an interesting disctinction for energy cells.

Side note: Would be also very interesting to check the feed-in and outflows between EC and TSO
This would be define as a NET ZERO energy constraint: The TSO and the EC can exchange as much as they want as long as the total outflow = total inflow over a given period of time,

(#133)