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In this paper, a new architecture for sharing resources amongst home environments is proposed. Our approach goes far beyond traditional systems for distributed virtualization like PlanetLab or Grid computing, since it relies on complete decentralization in a peer-to-peer like manner, and above all, aims at energy efficiency. Energy metrics are defined, which have to be optimized by the system. The system itself uses virtualization to transparently move tasks from one home to another in order to optimally utilize the existing computing power. An overview of our proposed architecture is presented as well as an analytical evaluation of the possible energy savings in a distributed example scenario where computers share downloads.