A method and apparatus is disclosed for using a transaction system involving fungible, ephemeral commodities including electrical power, the transmission of electrical power, trading such commodities, managing user resources and credit resources, as well as managing compliance reporting of these activities....http://www.google.de/patents/US20020038279?utm_source=gb-gplus-sharePatent US20020038279 - Method and apparatus for using a transaction system involving fungible, ephemeral commodities including electrical power
