France built out a system of hydro dams and nuclear power plants in the 70s, and they store excess nuclear power by pumping from reservoirs downstream to ones upstream, for later hydro power generation. Unlike Denmark, however, France has the Alps, and thus a suitable location for dams.
Seems like an ideal arrangement would be to use Norwegian hydro power installations as a buffer for Danish wind power output.
Seems like an ideal arrangement would be to use Norwegian hydro power installations as a buffer for Danish wind power output.