A charge controller that redirects or shunts excessive charging current away from a battery.

The controller requires a large heat sink to dissipate the current from the short-circuited photovoltaic array.

Most shunt controllers are for smaller systems producing 30 amperes or less.

An electrical load employed to make use of excess generated power when it is not needed for its primary uses; such as, a residential photovoltaic system that employs power for domestic water heating when it is not needed for purposes as operating lights or running heating systems.

Type of a battery charge regulator where the charging current is controlled by a switch connected in parallel with the photovoltaic (PV) generator.

Shorting the photovoltaic generator prevents overcharging of the battery.