Load Control System Having An Energy Savings Mode

A load control system for a building having a lighting load, a window, and a heating and cooling system, the load control system comprising:

• a lighting control device for controlling the amount of power delivered to the lighting load;
• a motorized window treatment comprising a window treatment fabric for covering the window, the motorized window treatment operable to move the fabric between a fully-open position in which the window is not covered and a fully-closed position in which the window is covered;
• a temperature control device for controlling a setpoint temperature of the heating and cooling system to thus control a present temperature in the building;
• and
• a controller coupled to the lighting control device, the motorized window treatment, and the temperature control device via a communication link, the controller operable to receive a demand response command and to transmit at least one digital message to the lighting control device, the motorized window treatment, and the temperature control device via the communication link in response to receiving the demand response command;
• wherein the lighting control device is operable to automatically decrease the amount of power delivered to the lighting load so as to decrease the power consumption of the lighting load in response to receiving the at least one digital message from the controller, the motorized window treatment is operable to automatically move the fabric to the fully-closed position so as to decrease the power consumption of the heating and cooling system in response to receiving the at least one digital message from the controller, and the temperature control device is operable to automatically increase the setpoint temperature of the heating and cooling system during a first portion of the year and decrease the setpoint temperature of the heating and cooling system during a second portion of the year so as to decrease the power consumption of the heating and cooling system in response to receiving the at least one digital message from the controller.

A method of controlling the amount of power delivered to a lighting load located in a space of a building, the amount of natural light admitted through a window located in the space, and a setpoint temperature of a heating and cooling system, the method comprising the steps of:

• receiving a demand response command;
• adjusting the amount of power delivered to the lighting load so as to decrease the power consumption of the lighting load in response to receiving the demand response command;
• decreasing the amount of natural light admitted through the window so as to decrease the power consumption of the heating and cooling system in response to receiving the demand response command;
• and
• adjusting the setpoint temperature of the heating and cooling system so as to decrease the power consumption of the heating and cooling system in response to receiving the demand response command.

A load control system for a building having a lighting load located in a space of the building, a heating and cooling system, and a window located in the space of the building, the load control system responsive to a demand response command, the load control system comprising:

• a lighting control device for controlling the amount of power delivered to the lighting load;
• a motorized window treatment comprising a window treatment fabric for covering the window;
• a temperature control device for controlling a setpoint temperature of the heating and cooling system to thus control a present temperature in the building;
• and
• a controller coupled to the lighting control device, the motorized window treatment, and the temperature control device via a communication link, the controller operable to receive the demand response command and to transmit digital messages to the lighting control device, the motorized window treatment, and the temperature control device via the communication link in response to receiving the demand response command;
• wherein the demand response command comprises a planned demand response command indicating an upcoming planned demand response event, the controller transmitting the digital messages to the lighting control device, the daylight control device, and the temperature control device to pre-condition the building prior to the upcoming demand response event.