Do you know how carbon intensity for biomass is calculated in that last graph?
The carbon in biomass came from the atmosphere when the biomass grew, so that shouldn't be counted towards carbon intensity. Not sure why it seems like it's included.
🪫Via Energy Dashboard, this morning’s generation mix: https://www.energydashboard.co.uk/live
🔥We need gas. Plenty of it.
💡And a strategic policy of gas to nuclear: https://conservativehome.com/2022/02/23/steve-baker-wanted-a-politically-and-economically-viable-path-to-low-emissions/ 
Discussion
You’d have to ask them.
Thanks.
Realistically, it's not a big difference as there's so little biomass. But they may unfairly treating biomass as no different than coal.
(the difference in % per kWh is probably taking into account the fact that biomass is hydrocarbons, so unlike coal, a significant % of the energy is coming from the burning of hydrogen)