Have you ever wondered exactly where the energy your house uses comes from? How much does leaving the coffee pot on cost you? Thanks to the work of Savraj Singh Dhanjal and his new company, Wattvision, you can monitor the amount of energy your house uses and how much it is costing you in real time. The seemingly simple device is just the first step in Dhanjal’s vision of a perfectly efficient house based on each individual’s habits and even a world without traffic. Read more over at the State of the Planet blog with a great piece by Josephine Decker.