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.
A new service lets engineers and orthopedic surgeons design and 3D print highly accurate, patient-specific, orthopedic medical implants made of metal -- without owning a 3D printer. Using free, downloadable software, users can import ASCII and binary .STL files, design the implant, and send an encrypted design file to a third-party manufacturer.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.