@Jonnel 17 million is only those installed so far, it will be closer to the whole population eventually. Of course each household gets 2 meters, gas and leccy, so only about 8 million households so far. As you say a big market building for wind turbines and solar panels. Nobody wants to pay extra for peak leccy, but it seems to be the chosen way of controlling us energy users. The highest prices in future will be around 6pm on a winter weekday when it is cold and there is no wind power. The lowest prices at night on windy summer weekends. They say batteries will let us buy leccy when cheap and use it when prices are high, But we are a long way from that as yet, we have to get over Brexit first.