Accessing an energy management policy for a plurality of devices is described, wherein the devices are coupled with a first structure. The energy usage of the devices is monitored. An energy usage rule and energy usage is then compared. The energy management policy and energy usage is also compared. Based on the comparing, an instruction is generated to modify an energy usage profile of said device to correlate with the energy usage rule associated with the devices and the energy management policy, thereby enabling efficient energy management.

Accessing an energy management policy for a plurality of devices is described, wherein the devices are coupled with a first structure. The energy usage of the devices is monitored. An energy usage rule and energy usage is then compared. The energy management policy and energy usage is also compared. Based on the comparing, an instruction is generated to modify an energy usage profile of said device to correlate with the energy usage rule associated with the devices and the energy management policy, thereby enabling efficient energy management.

Accessing an energy management policy for a plurality of devices is described, wherein the devices are coupled with a first structure. The energy usage of the devices is monitored. An energy usage rule and energy usage is then compared. The energy management policy and energy usage is also compared. Based on the comparing, an instruction is generated to modify an energy usage profile of said device to correlate with the energy usage rule associated with the devices and the energy management policy, thereby enabling efficient energy management.

An energy-saving management system for a manufacturing machine, including an energy consumption measurement module, a product-sensing module, a control module, and a display unit is disclosed. The energy consumption measurement module is coupled to the control module for monitoring the energy usage of the manufacturing machine; the product-sensing module is coupled to the control module for detecting each product to be processed by the manufacturing machine, and calculating the quantity of the processed products; the control module receives data from the energy consumption measurement module and the product-sensing module, and generates energy consumption data and carbon emission data per unit product; the display unit is coupled to the control module to display the energy consumption data and carbon emission data per unit product.

A machine tool according to an aspect of the present disclosure comprises: a plurality of servo motors; a plurality of servo amplifiers that drive the servo motors, respectively; and a numerical value control device that inputs a command value to the plurality of servo amplifiers in accordance with a processing program. The numerical value control device has: a motor classification unit that classifies the plurality of servo motors into continuous drive motors which require continuous excitation during execution of the processing program and intermittent drive motors in which excitation can be stopped at least temporarily during the execution of processing program; and a stop control unit that stops the excitation of at least one of the intermittent drive motors during the execution of the processing program.