A system and method manage delivery of energy from a distribution network to one or more sites. Each site has at least one device couple to the distribution network. The at least one device controllably consumes energy. The system includes a node and a control system. The node is coupled to the at least...http://www.google.com/patents/US7379997?utm_source=gb-gplus-sharePatent US7379997 - System and method of controlling delivery and/or usage of a commodity
