I’m told that Industry gets charged not by how much current they draw but by how much it distorts the grid power waveforms. In fact there are experimental designs out there for power correction facilities that delay the waveforms by for instance 90% of a wavelength (so everything lines up again) and convert the delta to DC to store in batteries. The battery power can be used for their own purposes or to reinject in low voltage situations.
I was watching this one video where they were talking about how they dropped their electric bill by changing how whatever machine they were demonstrating started up. Instead of off to full on they set it to ramp up slow enough to not push them into the higher peak pricing bracket. Electricity usage was the same overall but the bill was less.
