'Renewables have many benefits, but their intermittency does indeed carry a cost.'
I saw that the UK Energy Research Centre (UKERC) have published a new report this week which looks at where those costs are and how they can be minimised.
This article from The Engineer highlights how the National Grid's plan to adapt their storage systems must also work in combination with demand side response, more flexible generation and interconnection.
What impact do you think renewables will have on the grid?