If I can get the temperature online for my neighborhood (I can), then how can it be hard to get the local spot electricity price online? I don't see anything unnatural or difficult about this. No infrastructure changes are needed.
What's the behavior of the system when the home cannot access the marketplace via their normal ISP? I think power utilities don't want to bind their QoS fate to a company outside of their control or specification.
Um, if it can't connect to the internet, it reverts to the default behavior it has now? Or it could revert to the pattern seen yesterday? Besides, an internet connection is critical infrastructure for about everything else. What's so special about this?