This is the vision BTG Energy is working towards. Most homes will have batteries and all cars (most family + fleet cars, less than 1% of cars are enthusiats) will be electric. The combined battery storage available + solar panels (Which will be everywhere) will mean homes will be power producers and their energy usuage will scheduled and consistent – draw in a certain amout of energy at specific times of the day when prices are low and sell energy when prices are high. Fixed tariffs are a relic of the past and will not be available within 10 years in the UK. Some countries will follow the UK others will be doing this before the UK. I can imagine this starting to take shape within 5 years.