This is cool, few years ago, I interned for the Tennessee Valley Authority on their Energy Efficiency and Demand Response team. The bulk of our peak demand savings came from industrial customers [1] but we did have a program for residential users, but it was more on the general efficiency side [2].

[1] - http://www.enernoc.com/our-resources/brochures-faq/faq-tenne...

[2] - http://www.energyright.com/residential/