Scotland producing enough renewables to meet 90% of Scottish electricity demand

Pumped storage at many hydro schemes and battery storage (for instance at the Shetland Tidal array) help cope with peak demand and utilise power when too much energy is created to be used at once. I don't know the figures for how much can be stored and for how long.(Any extra wind power is great for drying the washing )

www.powermag.com/uk-banks-on-energy-storage/
www.scottishconstructionnow.com/article/scotland-s-largest-hydro-project-approved-by-ministers
www.novainnovation.com/energystorage.

But was it delivering it when it was needed? With wind delivering 70% of their energy, how do they manage on days when wind is producing only 5% or less of its full capacity?

I am pretty sure that they will be buying in fossil fuel generated power when there is little or no wind and what useful purpose they have found for the excess wind on windy days?

I am much more interested in how much of their actual consumption they can meet on a day to day basis from renewables, and how many days they are dependent on other forms of power generation. Solar energy is high in summer, low in winter and there is none at night.

Do not misunderstand me I am not a climate or renewables sceptic in any way, but many of the statistics quoted are grossly misleading and pretend a self sufficiency that does not actually exist.