[izacus]

This graph does not show the failure of renewables to provide sufficient power this year (it ends at 2020).

The renewable power production is down for up to 40% and french nuclear power being in maintenance mode has caused the coal consumption to rise significantly.

[jhgb]

It's completely irrelevant. The reason for the transition is climate protection and the climate cares about long term averages - the lifetime of CO2 in the atmosphere is on the order of centuries. Pushing that average baseline lower is what matters, even in the presence of occasional spikes.