ECN (Energy Research Organization) http://www.ecn.nl/docs/library/report/2012/l12029.pdf Presented at: Grid Capacity and Stability Conference, London, United Kingdom, 21 June 2012.
Seems correct. However, with a Nissan Leaf I'd never participate, I would want my Leaf charged asap. When you have a 85kWh Model S or in the future a 100kWh Model S you can always say: I always want a 60% SoC at least and you can use the rest to "help out" the grid. If I arrive at home with 10% SoC I want't the car to charge asap for multiple reasons: * Battery life * Emergencies (Going to hospital) * Unplanned trip to store / friend