With more people getting rooftop solar panels, homes can send excess electricity to their utilities. In the future, people may be able to trade power not only with utilities, but also with each other using blockchain technology. Blockchain is the essential component of the Bitcoin crypto-currency, and nowadays its used to authenticate all kinds of asset trading. Energy experts now believe that blockchain networks could offer a way for households to leave the main grid and set up independent co-operative microgrids, where people trade power according to need. See here how blockchain technology will change the way we manage our energy for the better.