I love it when something complicated is made simple and IKEA have done it again - no not with a baby unit storage system but with the concept of Blockchain.

They have designed a prototype Solarville where inhabitants can buy and sell excess electricity using a blockchain platform.  Blockchain is still seen by many as a bit of a dark art but here it is reduced to something much more easy to understand - think of it as ios on Apple or DOS on old computers.  It is simply an enabler and if that helps/encourages people in saving the planet then what is not to like.