- reliability, and
First see this NEW POST from Joe Weiss on how to begin wrapping your head around what control systems metrics could look like.
Then I'd recommend Jim Brenton's PRESENTATION at GridSec earlier this year on a new group that's formed to look at developing security (or should I say reliability and resiliency) metrics for the Bulk Electric System (BES).
OK, that's it, this is a short one. You can go back to what you should have been doing all along.