A group of researchers looking into the things and ways of the future us claims we may soon see bitcoin-enabled household electronics, with the team coming up with the concept of a plug socket that shops around all by itself to buy us the cheapest going rate electricity before turning itself on.
That's the forward-thinking coming out of Accenture, which says this Internet Thing would be operated by a modified version of the blockchain protocol that lets it barter for better deals for its owner. It uses, or would use, a "smart contract" embedded into the blockchain to allow devices to search for alternative power suppliers, although this would clearly need our energy suppliers to be onboard and OK with such a seismic shift in their billing policies.
http://www.gizmodo.co.uk/2016/02/how-to-cut-electricity-bills-with-bitcoin-tech-of-course/