*3.6. Energy Sale to the Grid*

The possibility of supplying electric energy for the system through EV storage is one of the main characteristics of the proposed microgrid manager. Therefore, the cost factor of V2G mode to include the profit from the sale of energy can be established as:

$$R\_{V2G} = r\_{EV}(t\_m) \frac{P\_{EV\_{V2G}}^\*(t\_m)}{\eta\_{EV}} \Delta t. \tag{16}$$

The variable *rEV* represents the sale price of energy, and it is defined as 0.55 \$/kWh, taking the purchase price of energy into account; and *ηEV* is the efficiency of converters. Efficiency must be exceeded for the V2G energy sale to become viable.
