I think that it's unlikely that exposing individual consumers to such highly variable pricing will induce much change in consumer behavior. It's just so much to think about, with absolutely tiny potential cost benefit for the consumer.

However, high prices are unbounded, and I think that it's easier to respond to those signals than to respond to a signal from low selectivity prices.

In California (and maybe other places?), companies like OhmConnect are facilitating demand response. A third party bundles together lots of homes' potential drops in demand, then sells that drop in demand back to the utility when they would otherwise use expensive and highly polluting leaker plants.

This gets around several market challenges: 1) consumers don't trust utilities and won't believe that they are acting in their best interest. 2) OhmConnect can advertise the environmental benefits to consumers, something that utilities are loathe to do, and 3) it lessens management load on the utilities, who are not used to dealing with data challenges like that, 4) a third party is much more likely to be able to experiment with UX (eg gamificaion) than a staid, highly-regulated utility company.