> Running hydro, biogas (e.g. in Denmark) and offshore wind (UK, Spain, France, Italy) can definitely fulfill renewable base load demand.
What is renewable base load demand?
What is renewable base load demand?
This latter storage mode isn't needed until fossil fuels are almost entirely eliminated from the grid, since otherwise just use those instead for that long term firming.
The idea that the electricity supply system has to itself shoulder the burden of dealing with intermittency is also mistaken. If it's worthwhile users will be willing to dispatch at least some of their demand. I'm reminded of the argument against deregulation of telecom or airlines: that the new system wouldn't be as reliable or nice. But users were willing to make the tradeoff if the services were cheaper.