Motor system energy consumption often puts the emphasis on usage by pumps, fans, and compressors, but there are many additional energy saving opportunities that require more of a system view. (Source: US Department of Energy)
They can use efficient motors as this article suggests. But the end user, the factories, need to do theirs and turn off systems when not in use.
Do the factory lights need to be on 24 hours a day when there is no 3rd shift? Does the high pressure hot water system need to be heating through the weekend when there is no one in the fabrication facility?
There's efficient, and there's wasteful. The returns on wasteful should be explored at least as much as efficiency.