We'll see in a few weeks how the UK Government responds to Part One, but the constant refrain throughout from Westminster has been - it's time for the Welsh Government to take on more financial responsibility for the money it spends, and not come begging for more handouts.
This means that if energy is required on a constant basis then the system needs to be backed-up by conventional sources of power 73% of the time, and there are days when the back-up system is required for more than 90% of the time (In Germany, the industry association insists that renewables uptime averages 10%).