Analysis of GB electricity generation data has resulted in the following visualisation showing in green the days on which renewables generated more electricity than fossil fuels and vice versa (in brown).
Using this analysis method shows that fossils fuels are still dominant with gas easily being the single most important fuel source.
August was the “greenest” month in 2019 for electricity from renewables (generating more than fossil fuels on 16 days).
All data, except solar, comes from the Balancing Mechanism Reporting System. Solar data comes from the Sheffield Solar project at the University of Sheffield.