Power company engineer here, it’s true that a lot of our supporting and analytics software went down during the AWS event.

However, most devices that actually control grid units (called bulk electric system cyber-assets) are air-gapped or utilize a data diode.

FERC Reliability Standards and NERC CIP

However-er, flipping through those standards just now, turns out it’s 100% permitted to connect your “bulk electric system cyber-asset” to a cloud integration if done compliantly.

So somewhere in here we need some M. C. Escher stairs of AWS on the electrical grid on AWS on the electrical grid…

And that software may or may not be very reliant on AWS

Not. Electrical Scada systems are usually airgapped from the Internet.

Hell yea, time for cycles in the graph!