Good to know the lights won't go out as coal stations close down and coal imports drop off in future years. The transition is being managed by a so-called "capacity market" which has been created by government to give a subsidy for reserve plants to come on stream if a bad winter occurs. Auctioned with hundreds of bidders including EDF in several guises, the auction price comes out at £7 per megawatthour. £7 extra for a few hundred suppliers will cost up to £750m over 5 years apparently. This latest round (Spring 2017) costs £290m. The subsidy is worth 14% extra to operators on average wholesale prices. But the facts of life are that the biggest bidders are gas and coal, not good for CO2 reduction. Incidentally, this scheme started in 2014, when top politicians were still saying the lights would go out and we therefore needed new nuclear, which, of course, is extremely unlikely to happen till the late 2020s.