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I found
thisP2P Energy Grid
From P2P Foundation
The P2P Energy grid is a concept whereby any home could produce its own energy, using renewable energies like solar energy, and sell its surplus to others who need it.
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Microgrids are “a collection of small generators for a collection of users in close proximity,” explains Dr Markvart, whose research appears in the Royal Academy of Engineering’s Ingenia magazine. Microgrids’ premise is that electricity demand is split up and shared around the network of users, much like BitTorrent file sharing. “This microgrid appears to the larger grid as if it’s any other customer. And it can quickly switch between operating on and off the grid: when the grid offers cheap electricity, the microgrid can purchase it, but if prices rise or there’s a power failure, the microgrid can isolate itself.
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Solar is different from other energy technologies in that it delivers energy at the point of use, directly to the end user. That allows it to circumvent the entire supply chain. It’s not another option for a utility, it’s a competitor to a utility — the first time utilities have really had a competitor.
Lots more at link