[DamonHD]

You do realise that the last 2 times the GB grid had major glitches (since 2000) part of the issue was thermal (nuke, gas, coal) plants going down in big chunks beyond the overall system capacity to cope.

1) The system works as a system

2) Big single plants going down (eg 'tripping') are more hazadous to grid stability than smaller individual generators

3) All generators have to be 'backed up' by spare capacity, especially big thermal

4) Yes this stuff is priced in, especially as in some grids some of the time it is over 50% of the generation