EV Charge Control

Controls if a connected EV will charge from the grid during cheap hours:

When Needed:

Charges if the battery is below 'Minimum EV SoC'

Always:

Charges whenever grid energy is cheap

Also specifies the rate at which charging will happen.

Note: Excess solar power always takes priority over grid.

Waits a random amount of time (up to 30 minutes, chosen once per cheap period) after cheap energy begins before starting to charge the EV.

This avoids adding to the grid-surge of all automated devices drawing power the instant cheap energy becomes available.

The rate at which a connected EV will charge from the grid when it is set to 'Charge Now'.

The ideal amount of solar energy generated in a day (kWh). Use the typical maximum value seen during summer, and the typical maximum value seen during winter.

This is used to determine how much energy to reserve in the Powerwall to power through the next day given the expected weather.

The amount of energy the Powerwall can store. Expressed as the number of Powerwalls installed.

The amount of the Powerwall's capacity that should never be used while the grid is available. Used to power the home in the case of an outage.

When excess solar power is available, the Powerwall is allowed to charge to this level before the EVs get to charge.

While charging on cheap energy, the Powerwall is allowed to discharge down to this level to help power the EV.

If a connected EV falls below this state of charge, it will be automatically recharged to this level from the grid during cheap hours.

Note: If an EV falls below 10%, it will be recharged from the grid immediately, to protect the battery.