There are many milestones to pass in the transition from a high to low-carbon sustainable energy system. There is the first hour without coal, or oil, or gas generation (or all of them together) and the point when the last coal, oil or gas power plant (or all of them together) are finally retired.

Britain likely to generate more electricity from wind, solar and hydro than fossil fuels for the first year ever in 2023::There are many milestones to pass in the transition from a high to low-carbon sustainable energy system. There is the first hour without coal, or oil, or gas generation (or all of them together) and the point when the last …