Interesting and thanks! I use time historians for grid level operations, but the data coming from a single generator is somewhat limited to things like real and reactive power (among others) and the economic data is submitted in a different way.
Although we sometimes supply historians they are not usually part of the up-front controls and commissioning contract so I am not as familiar with them. Usually part of the reason the HMI software plotting capabilities are such shit is so that the HMI vendor can try to up-sell a historian.
