So rather than criticising things done decades ago by people long since passed away and now can't be reversed, let's have some practical suggestions for today's world?
Loads have been put in this thread, including:
-improving building standards for new builds that do not yet have planning permission to Passivhaus or similar
-support for DIY insulation of homes
-support for professional insulation of homes and public buildings (schools, hospitals etc.)
-real, clear, genuine advice for people to reduce energy use, including advice on how to that is up to date
-looking if construction at hinkley point C can be sped up
-temporary support for electricity bills
-making it easier to build onshore wind (as it is easiest and quickest to deploy, so can add renewable capacity quickly)
-expanding the round for more offshore wind
-get a move on with sizewell c and more new nuclear power stations
-make it easier for people to put solar on their own roof