Comment by rcxdude

That is more or less the recommendation from the report, except it wasn't a shortage of intertia, more a shortage of grid voltage control, which current rules prevent renewables from participating in, even if they are capable of it (it's mostly a case of the inverters, not the panels/turbines they draw from. Same with inertia). The blackout was mainly due to a failure of multiple participants in the grid to do what they were supposed to (failing to provide the voltage control it was contracted to do, in one case potentially failing to not drive oscillations into the grid, and failing to remain online within the required voltage range). A lot of the recommendations in the report are 'we should check the plants are up to scratch'.