are you going to Octopus?
shshhh! I thought that we weren't supposed to name the competition on this forum.
I firmly believe that in order to get to nil net carbon at minimum cost, we don't stupidly build more gas-burner power stations to only ever be used between 4pm and 8pm before 2035, because that is a big capital cost for small utility for not enough years. Instead we ask for the government to insist that electric vehicle parking meters whose fast recharge can be disabled for the evening peak are, and those which can't be disabled pay a lot extra unless there happens to be shown to be a nearby windmill generating surplus at the time. Sane people could plan ahead and recharge in the car park at work to avoid paying extra at peak times and get their boss to put in 7.2kW interruptible chargers, costing less than building new gas fired peaking power stations and new extra pylons. Disabling one 240 kW Tesla fast recharge point is worth as much to freeing up capacity as at least 120 frugal homes like mine avoiding the 2kW kettle during expensive evening peak hours. My present net usage meter is showing 0.28kW so >800 homes like mine can run on as much power as one fast recharge point.
We still need as much flexibility in time of use as possible. Your suggestion to change to one fixed price all year seems to me to be a bad idea because that is to stop thinking about time and date of use, declare it to be "somebody else's problem" to provide evening peak electricity on the worst day of the year, and everyone pays bigger standing charges for more pylons and stuff like that which won't even be used all of the time.
In moving most households to a price floating <<brand name>> tariff, the money saved from not building and operating more gas peaking power stations, big pylons, gas import terminals, foreign drilling rigs and foreign liquification machinery for shipping is then freed up for more windmill generation. All of it.
https://www.youtube.com/watch?v=F0JDK_71yDg