Grid emergency = rolling blackouts

Power went out this A.M. Called Oncor: recording said Tx grid is in trouble, and they are having rolling 15-minute blackouts to limit damage. Actually lasted about 9mins at my location.


Note: It's showing up in Oncor's tweets now:

billcarleton Bill Carleton
@oncor why no advanced notice that you will be rotating grid outages?
28 minutes ago
in reply to @billcarleton ↑

@oncor
Oncor
@billcarleton Sorry for your inconvenience. We found out <1 hour ago from ERCOT, who operates the state's electrical grid. Please be safe.

{Edited to add: just put the Oncor outage number 1-888-313-4747 in my cellphone yesterday. Guess that paid off.}

{Another edit: another round from 7:47a - 8:03a. If this is going to go on all day i'll leave my PCs off and just use this laptop.}