Absolutely. At the solar plant I audited the other week, I was amused to see that the great big huge expensive grid protection and control box was controlled via GPS sync. It's the cheapest way to maintain grid frequency at the far end of the grid. And I mean far; 5 hours west of Thunder Bay …"Keeping time in sync" is a cornerstone to technology from gps to ssl, from hft to big data.
My finance client's use ptp not ntp.